[Ffmpeg-devel-irc] ffmpeg.log.20130427

[burek]

[00:43] <EnginA> quick question: what would be the easiest way to get video lengt of a video ? and which video format that method supports ?
[00:43] <EnginA> i can preferrably use the API or less preferrable a comand line tool
[00:46] <ubitux> ffprobe -v 0 -show_entries format=duration -of flat input
[00:46] <ubitux> look at ffprobe.c for how it's done with the api
[00:48] <EnginA> ubitux: and i'd imagine it'd support any format ffmpeg does ?
[00:49] <ubitux> sure
[00:49] <EnginA> thanks
[00:50] <ubitux> note that duration may be unknow with some streams
[00:50] <EnginA> such as ?
[00:50] <ubitux> well typically, a random continuous web radio
[00:50] <EnginA> i don't care about those streams, but out of curiosty
[00:51] <EnginA> ubitux: oh you mean, actual streams, alright.
[00:51] <EnginA> i will be working with files for sure
[00:52] <Mavrik> I think you wont get duration for TS streams as well
[00:52] <Mavrik> at least not a correct one
[00:53] <Anaphaxeton> Mavrik, my TV set's firmware sucks in this sector. It demands specific containers with specific stream combinations. for .mkv for example i have to convert mpeg2 to h264. for mpeg-ps it accepts mpeg2 and linear pcm...
[00:53] <Mavrik> Anaphaxeton, Id expect it would demand mpeg2 with MP2 audio
[00:53] <Mavrik> not pcm O.o
[00:54] <Anaphaxeton> the manual says "mpeg"
[00:54] <Anaphaxeton> i will try mp2, although i  think i have tried that combo before
[00:54] <Anaphaxeton> let me check
[00:58] <Anaphaxeton> it throughs lots of errors but playback with vlc looks ok
[00:58] <Anaphaxeton> i put the bitrate at 384K
[00:59] <Anaphaxeton> sounds ok but i dont know if the tv will want to play it!
[00:59] <Anaphaxeton> theoritically it works
[00:59] <Anaphaxeton> btw why cant the audio stream be pcm?
[00:59] <Anaphaxeton> (just for keeping the quality...)
[01:01] <Mavrik> because the container doesnt support it
[01:01] <Mavrik> since its made for remote streaming
[01:02] <Mavrik> and noone is stupid enough to stream raw audio over IP links
[01:02] <Anaphaxeton> of course
[01:02] <Mavrik> plus, PS/TS presumes format will carry its own configuration data
[01:02] <Anaphaxeton> well pcm was not make for remote streaming i think...
[01:02] <Mavrik> PCM is just raw audio with not metadata
[01:03] <Anaphaxeton> yes
[01:03] <Mavrik> thats why most containers will not carry it
[01:03] <Anaphaxeton> panasonic claims otherwise :p
[01:03] <Anaphaxeton> and refuses to play the file
[01:03] <Anaphaxeton> i dont think it is because it is incomplete...
[01:04] <Anaphaxeton> maybe it wants the subs externally
[01:06] <EnginA> any estimate of how much of the beginning of a file would be sufficient to get meta data (hence video length)
[01:06] <Anaphaxeton> good question
[01:07] <Mavrik> EnginA, depends on format
[01:07] <Mavrik> which format do you have?
[01:07] <EnginA> i want to handle "all"
[01:07] <EnginA> so a rough guaranteed guess is what i'm lookinf for
[01:07] <EnginA> what's the worst case
[01:07] <Mavrik> alot then
[01:07] <Mavrik> I used 2 MB
[01:07] <Mavrik> and it worked for streams
[01:07] <EnginA> wow
[01:08] <Mavrik> at least most of them
[01:08] <Mavrik> now, I suggest you reconsider that "all"
[01:08] <Mavrik> and try again :P
[01:08] <EnginA> well, it depends on codecs rather then containers i suppose ?
[01:09] <EnginA> if so, i don't have much idea, whatever people are using nowadays then, h264 ?
[01:09] <Mavrik> no, it depends on containers.
[01:09] <Mavrik> since containers store that data
[01:09] <Mavrik> codecs dont care
[01:09] <EnginA> so, simple, mainly mpeg, mkv and avi
[01:09] <EnginA> i'm not seeing much avi lately though
[01:10] <EnginA> even though rarely, i see wmv too
[01:10] <Mavrik> couple of KB should be enough for those formats
[01:11] <Mavrik> (wouldnt know about mpeg though)
[01:11] <Mavrik> since those formats have mostly headers for that
[01:11] <EnginA> what would require a couple of MB ?
[01:12] <Mavrik> MPEG-TS, MPEG-PS, other streaming formats
[01:12] <EnginA> alright
[01:27] <Anaphaxeton> what format would be good for mpeg-ps?
[01:28] <Anaphaxeton> i am trying vob at the moment :p
[01:28] <Anaphaxeton> without -f it wont playback
[01:36] <Nuc1eoN> hi
[01:36] <Anaphaxeton> is .mpg subtitle friendly?
[01:36] <Anaphaxeton> hu Nuc1eoN
[01:36] <Anaphaxeton> hi*
[01:37] <Nuc1eoN> glad I found this channel
[01:37] <Mavrik> Nuc1eoN, you sure? :P
[01:37] <Nuc1eoN> I'm clueless
[01:37] <Nuc1eoN> :D
[01:37] <Nuc1eoN> I want to demux from flv
[01:37] <Nuc1eoN> but it fucks up
[01:38] <Nuc1eoN> is it actually possible to demux with ffmpeg WITHOUT re-encoding?
[01:39] <Mavrik> Nuc1eoN, yep.
[01:39] <Mavrik> as usual
[01:39] <Mavrik> :)
[01:39] <Nuc1eoN> ffmpeg -i video.flv -vcodec copy out.h264
[01:39] <Nuc1eoN> not much :)
[01:39] <Mavrik> you didnt read ;)
[01:40] <Nuc1eoN> sry
[01:40] <Nuc1eoN> my screen ha some glitch and I couldnt read what you wrote lol
[01:40] <Nuc1eoN> linux has some weird bugs really
[01:40] <Nuc1eoN> those text glitches
[01:41] <Nuc1eoN> https://gist.github.com/Nuc1eoN/5471159
[01:42] <Nuc1eoN> does anybody understand why I cant choose any output name?
[01:43] <Nuc1eoN> it needs a certain extension
[01:43] <Nuc1eoN> like .avi
[01:43] <Nuc1eoN> otherwise it won'T demux
[01:43] <Nuc1eoN> thats weird
[01:43] <Mavrik> Nuc1eoN, no its not
[01:44] <Mavrik> because it chooses output container based on extension
[01:44] <Mavrik> if you dont pass it explicitly
[01:44] <Nuc1eoN> but I dont want any container
[01:44] <Mavrik> Nuc1eoN, you STILL did not paste ffmpeg output.
[01:44] <Mavrik> Nuc1eoN, "no container" is still a way of writing output
[01:44] <Mavrik> and if you dont pass it
[01:44] <Mavrik> ffmpeg will choose it according to your output filename.
[01:44] <Nuc1eoN> well I want to understand first :)
[01:45] <Mavrik> now.
[01:45] <Mavrik> paste ffmpeg output so we know what youre working with.
[01:45] <Nuc1eoN> ok
[01:46] <Nuc1eoN> https://gist.github.com/Nuc1eoN/5471182
[01:46] <Nuc1eoN> is ok? :P
[01:46] <Mavrik> better.
[01:46] <Mavrik> :P
[01:46] <Nuc1eoN> it's h264
[01:46] <Nuc1eoN> and aac
[01:47] <Nuc1eoN> in flv
[01:47] <Mavrik> ok, basically
[01:47] <Mavrik> this does mux only video stream into your output container
[01:47] <Mavrik> without reencoding
[01:48] <Nuc1eoN> that's weird, because the file is corrupted
[01:48] <Nuc1eoN> I cant play it
[01:48] <Nuc1eoN> with vlc at least
[01:48] <Nuc1eoN> I know it's only video
[01:48] <Nuc1eoN> no sound
[01:48] <Mavrik> of course you cant play it
[01:48] <Mavrik> its missing headers from FLV
[01:49] <Mavrik> you probably have to put it into annexb format to have a chance
[01:49] <Nuc1eoN> annexb?
[01:49] <Mavrik> yeah
[01:49] <Nuc1eoN> wats that
[01:49] <Mavrik> Nuc1eoN, lets do this again: why are you even trying to "demux" the stream?
[01:49] <Mavrik> since trying to store raw bytestreams is a fast way to pain valley
[01:49] <Nuc1eoN> I want to remux them into mkv
[01:50] <Mavrik> any reason why dont you just say ffmpeg -i something.flv -codec copy something.mkv?
[01:50] <Nuc1eoN> well I like doing things step by step so that I can better understand everything :P
[01:51] <Mavrik> storing raw bitstream of h264 and aac will cause you alot of pain
[01:51] <Nuc1eoN> I'm quite new to this you know
[01:51] <Mavrik> since containers carry critical data that is needed to display those streams
[01:51] <Nuc1eoN> aac works why?
[01:51] <Mavrik> (like video resolution, pixel format, audio sample rate, etc)
[01:51] <Nuc1eoN> I mean aac is also a container aint it?
[01:52] <Mavrik> nop
[01:52] <Mavrik> AAC is audio format
[01:52] <Nuc1eoN> ah,then it was oog :P
[01:52] <Nuc1eoN> ogg I mean
[01:53] <Nuc1eoN> which puts everything in containers
[01:53] <Mavrik> ogg IS a container
[01:53] <Mavrik> vorbis it the audio format it contains
[01:53] <Nuc1eoN> well anyways raw aac seems to work
[01:53] <Nuc1eoN> and it's also a common audio format isnt it?
[01:54] <Mavrik> yes
[01:54] <Nuc1eoN> or are they in additional containers?
[01:54] <Mavrik> of course theyre in containers
[01:54] <Mavrik> AAC is one of the MPEG-4 standard formats
[01:54] <Mavrik> and you usually find it within MP4 (.mp4, .m4a)
[01:55] <Nuc1eoN> ah
[01:55] <Nuc1eoN> ok
[01:55] <Mavrik> as I said, I really recommend you to do remuxing directly
[01:55] <Mavrik> since that will transfer necessary metadata :)
[01:56] <Nuc1eoN> what metadata for example?
[01:56] <Mavrik> like PPS and SPS H.264 data you need to play it back ;)
[01:57] <Mavrik> (since flv is a format which stores that in a header)
[01:57] <Nuc1eoN> does mkv too?
[01:57] <Mavrik> also timing timestamps
[01:57] <Mavrik> since most raw formats dont have their own timestamps
[01:57] <Mavrik> Nuc1eoN, yep.
[01:58] <Nuc1eoN> Mavrik, ah thx thats nice new knowlegde :)
[01:58] <Mavrik> since containers usually provide: place for common data (SPS/PSS packets for H.264, data about audio sample rate etc.) and timings
[01:59] <Mavrik> some codecs provide those themselves, some dont
[01:59] <Nuc1eoN> is there a way to add this metadata seperately afterwards (just curious :P)
[01:59] <Mavrik> AAC and H.264 have both options: to be encoded with those info inside the stream (being repeated periodically for streaming) or just at the head
[02:00] <Mavrik> Nuc1eoN, of course, but good luck finding a tool :)
[02:00] <Nuc1eoN> so it can be burned into the streams?
[02:00] <Mavrik> yep
[02:00] <Nuc1eoN> interesting
[02:00] <Mavrik> (AnnexB version of H.264)
[02:00] <Nuc1eoN> how can I achieve that? With ffmpeg?
[02:00] <Mavrik> but of course, AnnexB H.264 wont play inside MP4 or flv
[02:00] <Mavrik> at least not in most players ;)
[02:00] <Mavrik> or inside mkv
[02:00] <Mavrik> so you need to reconvert it back later
[02:00] <Mavrik> and thats alot of pointless pain :P
[02:01] <Nuc1eoN> uhh yeah
[02:01] <Nuc1eoN> can annexb also contain the audio stream?
[02:01] <Nuc1eoN> I mean, otherwise its pointless
[02:01] <Nuc1eoN> if it cant be in a container
[02:02] <Mavrik> em
[02:02] <Mavrik> AnnexB is a way of encoding H.264
[02:02] <Mavrik> your question is meaningless :)
[02:02] <Mavrik> AAC also has about 3 ways of encoding its bitstream
[02:02] <Nuc1eoN> yeah
[02:02] <Nuc1eoN> I wasnt precise
[02:02] <Mavrik> but if you say it works without change then you have the correct one
[02:03] <Nuc1eoN> but you said annexb doesnt work incontainers?
[02:04] <Mavrik> Nuc1eoN, no, I said it doesnt work in some specific containers
[02:05] <Mavrik> it has to be used in other types of containers (mostly meant for streaming)
[02:05] <Nuc1eoN> my fiel is a stream actually
[02:05] <Nuc1eoN> *file
[02:06] <Nuc1eoN> just sayin' :P
[02:07] <Nuc1eoN> the reson I wanted to do remuxing and muxing seperatley is also, that on Windows there is a tool I used which doesn only demuxing
[02:07] <Nuc1eoN> and it seemed to work
[02:07] <Nuc1eoN> pcgdemux or so
[02:07] <Nuc1eoN> I liked the tool
[02:07] <Nuc1eoN> but I'm on linux now
[02:08] <Nuc1eoN> :P
[02:08] <Mavrik> well, find out which output container it uses
[02:08] <Mavrik> and do that on linux :)
[02:09] <Nuc1eoN> it's open source actually I wonder why it's not available on linux
[02:10] <Nuc1eoN> also I experience somthing weird
[02:11] <Nuc1eoN> when I demux the audio stream with avidemux
[02:11] <Nuc1eoN> the file is not the same
[02:11] <Nuc1eoN> as when I do it with ffmpegf
[02:12] <Nuc1eoN> any expalanation for that=
[02:12] <Nuc1eoN> ?
[02:12] <Nuc1eoN> the file size differs slightly
[02:13] <Nuc1eoN> and also the md5hash of course...
[02:17] <Nuc1eoN> and antother question, when I do:
[02:17] <Nuc1eoN>  ffmpeg -i inpu.flv -vcodec copy ouput.mkv
[02:17] <Mavrik> is seems avidemux doesnt do the same magic as ffmpeg no? :)
[02:17] <Nuc1eoN> will it automaticly put it in mkv?
[02:17] <Mavrik> yep
[02:17] <Nuc1eoN> Mavrik: yeah :D
[02:17] <Mavrik> you can force mkv with "-f mkv"
[02:18] <Nuc1eoN> and if I dont^^
[02:18] <Nuc1eoN> also
[02:19] <Nuc1eoN> some ppl recommend to put -vn there
[02:19] <Nuc1eoN> to skip the video when demuxing audio
[02:19] <Mavrik> :)
[02:19] <Nuc1eoN> is that needed actually?
[02:19] <Mavrik> depends on output container
[02:19] <Mavrik> if its audio only, ffmpeg will disable video automatically
[02:20] <Mavrik> its usually wise to specify as much as possible to avoid auto-magic
[02:20] <Nuc1eoN> aha
[02:20] <Nuc1eoN> auto-magic ever sucked
[02:21] <Nuc1eoN> or maybe we would miss it it it werent there :P
[02:22] <Anaphaxeton> it seems i made it with -f vob :D
[02:24] <Nuc1eoN> Mavrik: Does the container actually do any additional compression (in file size)?
[02:24] <Mavrik> um
[02:24] <Nuc1eoN> I wonder
[02:24] <Mavrik> well it does have its own metadata
[02:24] <Mavrik> so it does provide an overhead
[02:25] <Nuc1eoN> yeah but it doesnt compress?
[02:25] <Nuc1eoN> (regarding size)
[02:25] <ubitux> a container will only increase the size
[02:26] <ubitux> if it compresses something, it's its own data, but that's all
[02:26] <Nuc1eoN> heh, I guessed so but I read it on other forums :P
[02:26] <Nuc1eoN> that flv is better than mkv because it compresses more°^^
[02:27] <Nuc1eoN> or look at this http://de.answers.yahoo.com/question/index?qid=20101229014054AADfObt :P
[02:27] <Nuc1eoN> "flv>mkv >avi
[02:27] <Nuc1eoN> avi saves up more space.
[02:27] <Nuc1eoN> avi has the best video quality."
[02:27] <Nuc1eoN> (quote)
[02:28] <Nuc1eoN> chosen as best answer haha :)
[02:29] <Nuc1eoN> well the other answers arent any better neither
[02:30] <ubitux> yahoo.com
[02:30] <ubitux> best source ever for video matters
[02:30] <Nuc1eoN> :DD
[02:31] <ubitux> anyway flv only can only contain 1 video stream and 1 audio stream
[02:31] <ubitux> avi has various restrictions, and it is notably delicate to mux h264 into it
[02:31] <Nuc1eoN> what speak actually FOR flv???
[02:31] <Nuc1eoN> *speaks
[02:32] <ubitux> and mkv can basically mux all kind of shit, so it's pretty handy, and overhead is not that big anyway
[02:32] <Mavrik> it was only thing supported by flash some time ago :)
[02:32] <Nuc1eoN> flash videos O.o
[02:33] <Nuc1eoN> brb
[02:40] <Nuc1eoN> back :D
[02:41] <Nuc1eoN> here it is http://www.videohelp.com/tools/PgcDemux
[02:41] <Nuc1eoN> Pgcdemux
[02:43] <Nuc1eoN> "Demuxes a PGC/VID/CELL in its elementary streams"
[02:43] <Nuc1eoN> but it does put them in containers I guess:
[02:43] <Nuc1eoN> "video(m2v), audio(ac3,wav,dts,mpa) and subtitles(sup)."
[02:49] <Mavrik> remind me, does ffmpeg support mp4 faststart yet?
[02:54] <Nuc1eoN> I have  a queestion (sry that I ask so much), how does ffmpeg actually encode, does it use external libraries (like x264/LAME) or does it have it's own implementations?
[02:58] <Mavrik> Nuc1eoN, depending on format
[02:58] <Mavrik> Nuc1eoN, ffmpeg has alot of internal encoders
[02:58] <Mavrik> for some formats you can choose
[02:58] <Mavrik> for others you need to use external formats
[02:59] <Mavrik> (e.g. for H.264 you must use libx264, for mp3 LAME etc.)
[02:59] <Mavrik> (for AAC theres a choice of 4 or so encoders)
[02:59] <Nuc1eoN> and fraunhofer encoder?
[02:59] <Nuc1eoN> for mp3?
[02:59] <Nuc1eoN> it's told to be the best
[03:00] <Nuc1eoN> (mp3 encoder)
[03:00] <Mavrik> iirc no
[03:01] <Nuc1eoN> Mavrik, ok ty
[03:01] <Nuc1eoN> whtat's the matter between ffmpeg and libav actually?
[03:04] <Nuc1eoN> just found the very same^^
[03:05] <Nuc1eoN> hm, a sad thing actually
[03:19] <ubitux> more than sad, it's a real PITA for users and dev
[03:24] <Nuc1eoN> well I just read it increased competition and as such speeded the development
[03:25] <ubitux> ffmpeg is not really available for ubuntu and debian users
[03:26] <ubitux> every app depending on the libs now need to support both and it's kind of messy sometimes
[03:26] <ubitux> duplicated work from the fork is done every week and causes merge issues on our side
[03:26] <Nuc1eoN> does ffmpeg merge much from libav?
[03:27] <Nuc1eoN> or at all
[03:27] <ubitux> every day everything is merged (except when it sucks) for 2+ years now
[03:27] <Nuc1eoN> lol
[03:27] <Nuc1eoN> and vice versa?
[03:27] <ubitux> almost never
[03:28] <Nuc1eoN> rofl
[03:28] <ubitux> which means we have something like 50+ filters for instance
[03:28] <Nuc1eoN> must be a whole lot of work
[03:28] <ubitux> yes.
[03:28] <Nuc1eoN> but doesnt it get more and more diffcult over time
[03:28] <ubitux> indeed
[03:29] <Nuc1eoN> since the projects divine i guess
[03:29] <ubitux> we try to stay compatible
[03:29] <ubitux> and the fork regularly try to break that attempt
[03:30] <Nuc1eoN> it's strange that libav wouldn't merge ffmpeg patches
[03:30] <Nuc1eoN> stupid even
[03:30] <Nuc1eoN> I'd say
[03:30] <relaxed> they merge some
[03:31] <ubitux> they pick and "rework" them sometimes
[03:32] <ubitux> most of the time they "reinvent" it
[03:32] <Nuc1eoN> very mature
[03:33] <relaxed> forks happen for a reason
[03:35] <Nuc1eoN> yeah but it was becasue of conlicting personalties
[03:35] <Nuc1eoN> not technical reasons
[03:35] <relaxed> It was both
[03:36] <relaxed> bringing in mplayer's filters was stupid, IMO
[03:37] <ubitux> relaxed: having mplayer's filters in ffmpeg stimulate the ports
[03:38] <ubitux> we're almost done with porting them all because we want to drop the wrapper
[03:38] <ubitux> i remember libav developers saying "yeah let's port them"
[03:38] <ubitux> 2 years after they ported maximum 2
[03:38] <ubitux> we ported maybe 30 of them
[03:38] <ubitux> i believe that wrapper was a very good idea
[03:39] <ubitux> ...and history proves it.
[03:43] <relaxed> It was those type of decisions made by mostly one person, who would not even come on irc at the other devs request that helped cause it too.
[03:43] <relaxed> And this could have all been avoided.
[03:44] <ubitux> people change, history proves it as well
[03:44] <ubitux> ...and now the people responsible of the separation are not willing to fix the situation
[03:44] <relaxed> So you can't point at the other group all you want and cast blame, but it was mostly ffmpeg's fault for this.
[03:44] <ubitux> i think it was a bad reason
[03:45] <ubitux> mp wrapper went into ffmpeg post fork iirc
[03:45] <relaxed> can*
[03:46] <ubitux> well i'm not blaming them for past actions
[03:46] <ubitux> i'm blaming them for what they do every week/day since 2+ years now
[03:46] <relaxed> When you have a driving force at the helm for so long this type of thing happens.
[03:47] <Nuc1eoN> relaxed: Like it's with Linus Torvalds and the Linux kernel?
[03:49] <relaxed> sort of, Linus doesn't submit code to Linux nowadays. He just heards the cats.
[03:49] <relaxed> herds*
[03:50] <Nuc1eoN> that's bad?
[03:51] <relaxed> mn has guided ffmpeg for a very long time, and while he's a good dev, he got to comfortable submitting anything he wanted.
[03:51] <Nuc1eoN> he gives it a direction
[03:51] <relaxed> :/ too*
[03:51] <Nuc1eoN> :P
[03:52] <relaxed> direction is a good thing but when you upset most of the other devs with that direction, forks happen
[03:52] <Nuc1eoN> although I aggree the best coder often isnt the best leader
[03:53] <Nuc1eoN> or "not always"
[03:53] <relaxed> But that's life, and it's why we have 50 dofferent types of tooth paste at the grocery store.
[03:53] <relaxed> Different people want different things.
[03:53] <Nuc1eoN> haha yeah
[03:53] <Nuc1eoN> but still big companies need a leader
[03:53] <Nuc1eoN> IMO
[03:54] <ubitux> relaxed: the fork in itself is not a problem
[03:54] <Nuc1eoN> a country needs one
[03:54] <ubitux> it's actually a good thing
[03:54] <ubitux> but it's not done properly
[03:54] <ubitux> and it's continously done in a way where it tries to destroy ffmpeg
[03:55] <ubitux> (or their users)
[03:55] <ubitux> that is the real problem..
[03:55] <Nuc1eoN> yeah like this ubuntu "depreciation warning"
[03:55] <relaxed> I'm sure they would rather be the only one.
[03:56] <relaxed> Just as I'm sure FFmpeg devs wish libav would go away.
[03:57] <ubitux> relaxed: i don't care if libav exists, as long as it doesn't prevent every debian/ubuntu users to use it.
[03:57] <relaxed> You guys get all they work by proxy and pile your features on top. Then make new releases all the time in an effort to overshadow them.
[03:58] <ubitux> what is the problem with providing both of the two worlds?
[03:58] <relaxed> So I guess they want to make it more difficult for you to continue.
[03:58] <ubitux> the fork has the recognition from ffmpeg
[03:58] <relaxed> Nothing, I'm just sharing what I've seen.
[03:59] <ubitux> authorship is kept, and the fork is mentioned
[03:59] <ubitux> we don't try to hide in
[03:59] <ubitux> ...and i can't say the same about them
[03:59] <relaxed> It's a shitty thing all around.
[04:00] <bcoudurier> relaxed you are wrong
[04:00] <relaxed> how so?
[04:00] <ubitux> relaxed: should we wait for the fork to make a release before we do?
[04:00] <bcoudurier> I was there I heard everything
[04:00] <relaxed> No. I'm just telling you how they see it.
[04:01] <relaxed> bcoudurier: So was I.
[04:01] <relaxed> Unless you mean a private meeting.
[04:02] <bcoudurier> where were you ?
[04:02] <bcoudurier> grep relax in my irc logs don't show anything
[04:02] <relaxed> On the mailing lists, irc, etc...
[04:03] <bcoudurier> it was a revenge that's all
[04:03] <relaxed> Just because I didn't participate doesn't mean I wasn't there.
[04:03] <bcoudurier> some people doing politics talked to other people and convinced them
[04:03] <relaxed> I agree.
[04:03] <bcoudurier> some were convinced some other were more honest than that
[04:04] <bcoudurier> that mplayer filter thing is an easy excuse
[04:04] <bcoudurier> a vote was proposed after the failed coup
[04:05] <bcoudurier> anyway Im glad ffmpeg is alive and active, I could even say more than ever
[04:06] <relaxed> You were one of the more active devs and then you disappeared too. I guess to focus on your fork?
[04:10] <relaxed> In fact you your fork was way before libav's. Why was that? Hard to get your changes in ffmpeg at the time?
[04:10] <relaxed> -you
[04:16] <iive> relaxed: actually imho, ffmpeg releasing more often than libav also means that ffmpeg breaks the API/ABI more. It also releases the breakage first.
[04:17] <iive> well, the application will have to incorporate these changes sooner or later, and ffmpeg also does more backports to older api/abi 's
[04:18] <relaxed> hello iive
[04:19] <iive> hi and I was just going to close the chat :|
[04:20] <relaxed> what do you mean "close the chat"? Exit out of irc?
[04:20] <iive> yes, i do that. sometimes.
[04:21] <relaxed> you're not as active as you once were.
[04:22] <iive> ^_^
[08:56] <rindolf> Hi all. http://paste.debian.net/552/ - this command gives only an audio output - not a video output. Why?
[08:57] <rindolf> http://paste.debian.net/553/ - here is the output.
[09:18] <rindolf> http://paste.debian.net/555/ - found it. Thanks.
[09:49] <Anaphaxeton> the .idx ,sub pair what kind of subs is it considered?
[09:49] <rindolf> Anaphaxeton: what?
[09:50] <Anaphaxeton> subrip?dvd?
[09:51] <Anaphaxeton> i an trying to make  my TV's player to recognise them
[09:52] <Anaphaxeton> is is quite picky with what codec-container combo i choose
[09:53] <Anaphaxeton> for example it will not accept an .mkv with mpeg video
[09:53] <Anaphaxeton> h264 works fine...
[09:54] <Anaphaxeton> the recipe i used yesterday to get both picture and sound is the following:
[09:54] <Anaphaxeton>  ffmpeg -i Downton5.mkv  -c:s subrip -c:v copy -c:a mp2 -b:a 384K -f vob /run/media/george/ARCH_201302/Downton.Season.2.Episode.5.mpg
[09:54] <Anaphaxeton> this .mkv source is just the streams of a dvd
[09:55] <Anaphaxeton> without -f vob it wont work :p
[10:03] <Anaphaxeton> no idea?
[10:04] <Anaphaxeton> the target is mpeg2 video, mp2 audio, ps container, .mpg
[10:04] <Anaphaxeton> does that fit subs?
[10:05] <Anaphaxeton> because as i see in the middle of transcoding, no subs exist in there
[10:11] <Anaphaxeton> so does .mped fit subs?
[10:11] <Anaphaxeton> .mpeg*
[10:22] <ubitux> Anaphaxeton: idx + sub is called vobsub
[10:22] <Anaphaxeton> i saw that in ffmpeg output
[10:22] <Anaphaxeton> vobsub wont work
[10:22] <ubitux> you can mux them into for instance mkv
[10:22] <Anaphaxeton> it is actually not muxed
[10:22] <ubitux> or you can hardsub them
[10:22] <Anaphaxeton> i need mpeg-pse
[10:22] <Anaphaxeton> i need mpeg-ps
[10:23] <Anaphaxeton> i dont want to transcode the video :-/
[10:23] <ubitux> you want to mux some vobsub into a mpeg ps file?
[10:27] <yajiv> Hi! i'm running into what looks like a version mismatch between ffmpeg and ffserver, and i was hoping to get some clarity on next steps
[10:28] <Anaphaxeton> ubitux, yes
[10:28] <Anaphaxeton> subtitle conversion sounds acceptable
[10:29] <ubitux> it should be possible but it seems there is a bug
[10:29] <Anaphaxeton> vlc cannot add them either
[10:30] <Anaphaxeton> and i have this "hybrid" gui that does wonders but doesnt output .mpg......
[10:30] <ubitux> in theory, ffmpeg -i in.mpg -i in.idx -c copy -map 0 -map 1 -y out.mpg should work
[10:30] <ubitux> but in practice the mpg muxer seems to have some troubles..
[10:31] <Anaphaxeton> i will try that right away
[10:31] <ubitux> i said it doesn't work :p
[10:31] <ubitux> :(
[10:31] <yajiv> sry, got dc&.was hoping to ask a question about ffmpeg and ffserver version mismatch. on version #define FFMPEG_VERSION "N-52509-g785eb5f" built on 10.8.2
[10:32] <ubitux> Anaphaxeton: OTOH, doing the exact same thing with mkv output works
[10:32] <yajiv> have the basic flow of ffmpeg-> http feed->ffserver->rtsp stream-> ffplay working file for a h.264 encoded mp4
[10:33] <yajiv> however, when i use ffmpeg build 0.11.1 built for android x86 (only version i could get working) and tried the same command line talking to the same ffserver i find that open opening the http connection it gets stuck in wait_feed and no data is sent out
[10:33] <Anaphaxeton> yes mkv is fine, that is why i was asking wether a subs stream can be embedded or not
[10:35] <yajiv> the ffmpeg command line is a very simple ffmpeg -re -i /sdcard/a.mp4  http://192.168.1.112:8090/feed1.ffm that feeds into ffserver
[10:36] <yajiv> was wondering if someone had insights into where to look to addressing this. Thanks!
[10:36] <ubitux> yajiv: you're not able to get a working ffmpeg version above 0.11?
[10:36] <ubitux> (for android i mean)
[10:37] <yajiv> for android x86&.i tried a couple other ones and gave up.
[10:37] <ubitux> 0.11 is starting to be very old
[10:37] <yajiv> is your first recommendation to try to build it on a later version?
[10:38] <ubitux> i'd say yes but that's because i have nothing better to propose
[10:39] <yajiv> do you know where i can debug the feed source?..or perhaps any thoughts on maybe using udp or rtmp feed out?
[10:39] <yajiv> btw, thanks for the feedback ubitux!
[10:39] <ubitux> no idea; -v debug i guess..
[10:40] <yajiv> kk..thx
[10:42] <yajiv> just to respond back&on cases where it doesn't work&i.e from the old build..the logs stop at..    Stream #0:1(eng), 90, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 128 kb/s
[10:42] <yajiv>     Metadata:
[10:42] <yajiv>       creation_time   : 2013-03-26 17:08:34
[10:43] <yajiv>       handler_name    : SoundHandle
[10:43] <yajiv> and when it works
[10:43] <yajiv>     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
[10:43] <yajiv>     Metadata:
[10:43] <yajiv>       creation_time   : 2013-03-26 17:08:34
[10:43] <yajiv>       handler_name    : SoundHandle
[10:43] <yajiv> Output #0, ffm, to 'http://192.168.1.112:8090/feed1.ffm':
[10:43] <yajiv> i'll grep and try to look at the source...thanks.
[11:06] <xlinkz0> just lost one hour trying to figure out why i got a segfault
[11:07] <xlinkz0> turns out i can't close a codec before the format
[11:20] <Anaphaxeton> ubitux, ffmpeg says it is copying the subs now :)
[11:20] Action: Anaphaxeton waits for the result
[11:21] <Anaphaxeton> before is would just ignore them
[11:24] <Anaphaxeton> lets see if the TV plays it
[11:24] <Anaphaxeton> btw
[11:24] <Anaphaxeton> ffmpeg -i Downton5.withsubs.mkv  -c:v copy -c:a mp2 -b:a 384K -c:s copy -map 0 -f vob  -y Downton.Season.2.Episode.5.withsubs.mpg
[11:27] <Anaphaxeton> if .sub doesnt work for the tv i will try to transcode the subs...
[11:27] <Anaphaxeton> vlc works fine though (as always)
[11:33] <ubitux> transcode the sub?
[11:34] <ubitux> dvd subtitles are bitmap
[11:34] <ubitux> what do you want to transcode them to?
[11:36] <Ilias95> Hello. I noticed that when converting flac to mp3, the date (and only that) is stripped from the metadata of the audio file. Why does this happen and how can I prevent it?
[11:39] <zap0> probably wrong format
[11:40] <zap0> i'd presume ffmpeg only deals in correctly formatted dates
[11:42] <Anaphaxeton> ubitux, i will try subrip and srt
[11:42] <Anaphaxeton> copy didnt work for the tv
[11:42] <Ilias95> zap0: No. Converting tha same file after adding the same date manually from mp3 to flac, works properly. The date is here.
[11:43] <Anaphaxeton> ---> Error while opening encoder for output stream #0:2 - maybe incorrect parameters such as bit_rate, rate, width or height
[11:43] <Anaphaxeton> please help my with that
[11:43] <Anaphaxeton> me*
[11:44] <Anaphaxeton> -bsf what?
[11:47] <Anaphaxeton> for vobsub to subrip
[11:50] <Ilias95> no one? maybe some sort of bug?
[11:52] <ubitux> Anaphaxeton: subrip/srt is text.
[11:52] <ubitux> you can't "transcode" bitmap subtitles to text
[11:52] <ubitux> you need an ocr tool
[11:53] <ubitux> Ilias95: is there a date in id3?..
[11:54] <Anaphaxeton> ubitux i feared that and it sounds painful :(
[11:54] <Anaphaxeton> what bitmat format can it encode?
[11:56] <Anaphaxeton> i have .srt, .idx+.sub in the same dir but the TV's manual implies it would work only wth divx
[11:56] <Anaphaxeton> and indeed they dont work
[11:56] <ubitux> pgs sub (bluray) and possibly dvb and xsub
[11:56] <Ilias95> ubitux, meaning year actually
[11:56] <Anaphaxeton> ty ubitux
[11:57] <ubitux> Ilias95: what's the name of the tag in the flac?
[11:57] <Ilias95> ubitux, I'm not sure what do you mean by "is there". I check metada of both files with puddletag
[11:57] <Anaphaxeton> ubitux, pgs sub doesn appear in encoders :(
[11:57] <Ilias95> ubitux, year is the name
[11:58] <ubitux> Anaphaxeton: hdmv_pgs_subtitle
[11:59] <ubitux> Ilias95: it looks mapped here
[11:59] <ubitux> in the "TDRL" id3 tag (which is the year)
[12:00] <Anaphaxeton> ubitux, that doest seem ro be documented :) tyvm
[12:00] <ubitux> Anaphaxeton: ffmpeg -codecs|grep pgs is your friend
[12:02] <Anaphaxeton> i know, but it seems it cannot ffmpeg cannot encode
[12:02] <ubitux> dvd to pgs sub is definitely supported
[12:03] <Anaphaxeton> -codecs has only D not DE
[12:03] <Anaphaxeton> and ffmpeg complains
[12:03] <ubitux> mmh maybe i was thinking the other way around
[12:03] <ubitux> yeah my bad we don't have a pgs encoder
[12:03] <Anaphaxeton> it is ok. things are already too complicated!
[12:04] <Anaphaxeton> stupid tv
[12:04] <ubitux> muxing dvd sub into mpeg should be fixed anyway
[12:04] <Anaphaxeton> the first time i threw an .mkv re-muxed from vobs and it didnt work
[12:04] <Ilias95> fflogger, is use the simplest command: http://pastebin.com/zXcqs6Ju
[12:04] <Anaphaxeton> no it is my TVs fault
[12:05] <ubitux> Ilias95:     TDRL            : 2013
[12:05] <Ilias95> ubitux, yes you are right, my fault
[12:05] <Anaphaxeton> i am going to email panasonic for detailed specs sources and patches
[12:05] <Anaphaxeton> they have a lot of GPL stuff in there
[12:05] <ubitux> Anaphaxeton: do you have a small mkv sample with vobsub?
[12:05] <Anaphaxeton> if they deny i will report to the fsf :p
[12:05] <ubitux> so i can open a bug on our side
[12:06] <Anaphaxeton> i repeat, it is the TV
[12:06] <Anaphaxeton> vlc doesnt complain at all
[12:06] <ubitux> i believe there is a problem in ffmpeg anyway :)
[12:06] <Anaphaxeton> maybe
[12:06] <Anaphaxeton> do you want me to do that?
[12:06] <ubitux> (make sure vlc isn't actually opening the vobsub file itself...)
[12:06] <Anaphaxeton> i have to find a small video
[12:06] <ubitux> yes i'd like a small video with vobsub in it please
[12:07] <Anaphaxeton> hmm
[12:07] <Anaphaxeton> vts 0 is ok?
[12:08] <ubitux> weren't you trying to get from mkv to mpg?
[12:08] <ubitux> with dvd subs into the mkv?
[12:08] <Anaphaxeton> it was first ripped by a dvd
[12:08] <ubitux> well, share both :)
[12:08] <Anaphaxeton> then re muxed to mkv
[12:08] <ubitux> the vts file is self-contained?
[12:09] <Anaphaxeton> lets see what i ve got here!
[12:09] <ubitux> i mean, video+audio+sub?
[12:09] <Anaphaxeton> the vobs yes. what vts?
[12:10] <ubitux> 12:07:37 < Anaphaxeton> vts 0 is ok?
[12:10] <Ilias95> ubitux, thank you
[12:10] <ubitux> Ilias95: your welcome
[12:11] <ubitux> Anaphaxeton: if you have a small self contained vob file with video+audio+dvdsub, i'd like this one
[12:11] <ubitux> (i'm assuming that's what you remuxed to mkv?)
[12:11] <Anaphaxeton> vob 0 doesnt have subs. :(
[12:11] <Anaphaxeton> yes
[12:11] <Anaphaxeton> from vob 1 and above
[12:11] <Anaphaxeton> how small do you want it to be?
[12:12] <ubitux> i need enough to see 2-3 subtitles events
[12:12] <ubitux> maybe a few megabytes might be relevant though
[12:13] <ubitux> upload what you can :)
[12:13] <Anaphaxeton> i will have to learn how to chop with ffmpeg :D
[12:13] <ubitux> if it's mpeg ps you can just dd
[12:15] <Anaphaxeton> do you want the mkv or mpeg file??
[12:15] <Anaphaxeton> or both?
[12:16] <ubitux> only mpeg will be fine
[12:17] <ubitux> you generated the mkv from the mpeg, right?
[12:17] <ubitux> (why were you talking about idx/sub lately if the sub are in the mpg?)
[12:22] <Anaphaxeton> vob->mkv->mpg
[12:22] <ubitux> (vob is mpeg you know :p)
[12:23] <Anaphaxeton> i am speaking abou;containers
[12:23] <Anaphaxeton> i am ttrying to keep the original mpeg2 stream
[12:25] <Anaphaxeton> i tried to keep ac3 in pcm, as the tv says, but didnt make it
[12:25] <Anaphaxeton> 25mb is ok?
[12:31] <ubitux> yes
[12:46] <Anaphaxeton> ubitux, final question before sending
[12:46] <Anaphaxeton> how do i make a sub the default?
[12:46] <Anaphaxeton> in mkv it is done
[12:47] <Anaphaxeton> in mpg not yet and the man page doesnt have anything related except if i am blind
[12:47] <Anaphaxeton> (probably i am :p)
[12:47] <ubitux> i wonder if you can force it from the cmd line
[12:47] <ubitux> it's a disposition thing, i don't remember seeing this exposed in ffmpeg tool
[12:47] <Anaphaxeton> i am working at the cli actually
[12:48] <ubitux> i don't know if mpeg actually has that disposition thing
[12:50] <Anaphaxeton> ok then
[12:50] <Anaphaxeton> i think i am ready to send
[12:50] <Anaphaxeton> can you accept dcc?
[12:51] <Anaphaxeton> i am sending both
[12:51] <Anaphaxeton> and pasting both command lines
[12:53] <Anaphaxeton> how much i wish i could use pcm instead of mp2...
[12:54] <Anaphaxeton> what is the max bitrate for mp2 btw?
[12:56] <xlinkz0> are there any leaks in this snippet? http://codepad.org/OVBUOMk4
[12:57] <xlinkz0> if i free the frame do i also need to free the buffer i filled it with?
[12:57] <ubitux> Anaphaxeton: go ahead
[12:58] <ubitux> xlinkz0: leak of buf at least
[12:59] <ubitux> xlinkz0: valgrind is your friend
[12:59] <xlinkz0> i tried running it but i get about 20 messages for ffmpeg internals
[12:59] <xlinkz0> is it because i have an old version of valgrind?
[12:59] <Anaphaxeton> oops a small mistake
[12:59] <xlinkz0> do your examples fare well against valgrind?
[13:00] <ubitux> xlinkz0: not sure for the examples
[13:00] <xlinkz0> well that's the .. only way to learn interacting with the libraries
[13:00] <ubitux> Anaphaxeton: looks stalled
[13:01] <ubitux> xlinkz0: they should, but that's not tested by our fate system, so some leaks might be present
[13:02] <Anaphaxeton> forward a port
[13:04] <xlinkz0> should the picture colors change a little when converting from YUV to RGB?
[13:04] <ubitux> well i guess you should just upload it to a random storage service
[13:04] <xlinkz0> the frame i save looks different from what i get in vlc
[13:05] <Anaphaxeton> yeah, i will convert it to text and paste it :p
[13:05] <Anaphaxeton> i dont know what service to use...
[13:06] <Anaphaxeton> in the meantime lets see  how that piece of video works on the  TV
[13:11] <Anaphaxeton> no worky on the tv
[13:15] <Anaphaxeton> i will try some srt i downloaded
[13:16] <Anaphaxeton> if it works and the srt is good i wil get higher quality rendering too. the vobsub is ugly
[13:16] <Anaphaxeton> pretty cheap series of DVDs. they even use vob1 for episode 2
[13:17] <Anaphaxeton> ok one time but...
[13:19] <yns_> Does anybody know how to convert to PhotoJPEG?
[13:19] <yns_> http://www.siggraph.org/education/materials/HyperGraph/video/codecs/JPEG.html
[13:24] <burek> is it possible to take the subtitle stream from an input and burn it over the video, removing the subtitle stream, all in one cmd line with ffmpeg?
[13:24] <burek> something like: ffmpeg -i input.mp4 -vf subtitle="..." -map 0:v -map 0:a -c:a copy -c:v ... output.mp4
[13:28] <klaxa> yes, yes it is
[13:28] <burek> cool :)
[13:28] <klaxa> does that command not work?
[13:29] <burek> well, subtitles filter asks for a filename parameter
[13:29] <klaxa> is the subtitle in the mp4-file?
[13:29] <klaxa> just pass it the mp4 file
[13:29] <burek> and i'd like to use a subtitle stream from within the input
[13:29] <burek> oh cool
[13:29] <Anaphaxeton> srt and subrip wrongly appears as dvd sub
[13:29] <klaxa> if that results in a segfault, pull the latest git, there was a bug which was fixed a few days ago
[13:30] <burek> great, thanks klaxa :)
[13:39] <yns_> Photo JPEG?
[13:40] <yns_> All guys on the openFrameworks seem to love it. But I've searched the web wildly and cant seem to find any tips how to convert
[13:41] <durandal_1707> yns_: does photo jpeg decodes with ffmpeg?
[13:41] <xlinkz0> ubitux: http://codepad.org/5511l82q
[13:42] <yns_> I don't know :(
[13:43] <yns_> Don't know where to get my hands on a photojpeg video
[13:43] <burek> just try it, with: ffmpeg -i your_pjpeg_file output.avi
[13:44] <yns_> okay I will
[13:44] <yns_> and what could I conclude if that works?
[13:45] <yns_> any tips where to find such a video on the web?
[13:46] <burek> that way you would know that ffmpeg can decode such input
[13:47] <burek> try with google? :)
[13:48] <yns_> thanks :)
[13:49] <yns_> I will try. But in the end I would like to encode TO PJPEG. This the way to go?
[13:50] <burek> then type ffmpeg -codecs
[13:50] <burek> to see if it is listed there
[13:50] <burek> and it has 'E' flag
[13:50] <yns_> what do you mean by 'E' flag?
[13:51] <burek> have you ever typed ffmpeg -codecs
[13:51] <yns_> no sorry I will
[13:51] <yns_> I'm a super newbie to the whole video world thing (coming from audio) sorry
[13:52] <burek> np :)
[13:54] <yns_> well, I copied the results to a texteditor in order to be able to search for 'pjpeg' tat gave no results
[13:55] <yns_> I've searched for jpeg which gives me a couple of things like ljpeg: lossless jpeg, jpeg2000 and jpegls
[13:55] <yns_> I'm suspected pjpeg maybe has another name in FFmpeg? Or is that a ridiculous suspicion?
[14:02] <yns_> I'll try converting to ljpeg, maybe that makes sense
[14:02] <xlinkz0> can anyone please help me understand how YUV is stored in memory?
[14:10] <yns_> This implies there should be pjpeg support: http://ffmpeg.org/pipermail/ffmpeg-devel/2006-November/016667.html
[14:23] <durandal_1707> yns_: found pjpeg files?
[14:24] <yns_> nope :(
[14:25] <yns_> some stock stuff that has to be payed for
[14:25] <yns_> I keep on searching, most search results are sketchy video converter softwares
[14:28] <durandal_1707> well progressive jpegs, aka SO2 should be supported
[14:35] <yns_> SO2?
[14:35] <yns_> thats for -vcodec to convert?
[14:35] <durandal_1707> no
[14:36] <yns_> but?
[14:37] <durandal_1707> its internal thing in bitstream, you should not care about
[14:37] <yns_> ?
[14:37] <yns_> so how can I convert to PJPEG then?
[14:39] <yns_> finally found a PJPEG vid!!
[14:40] <durandal_1707> i don't think we have progressive jpeg encoder
[14:40] <yns_> okay
[14:40] <yns_> did ffprobe [path] and it seems to be  Stream #0:0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj422p, 1920x1080 [SAR 72:72 DAR 16:9], 91433 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc
[14:40] <yns_> MJPEG?
[14:41] <durandal_1707> yes, but that does not have progressive stuff afaik
[14:41] <yns_> this stuff is wildly weird :)
[14:42] <yns_> I think I just give up
[14:43] <durandal_1707> but why you need progressive jpeg?
[14:43] <durandal_1707> didn't you want photo jpeg or something similar?
[14:43] <yns_> yes I'd love photojpeg :)
[14:43] <yns_> thats what I actually want
[14:43] <yns_> but I was just told here that progressive jpeg is anther name for that
[14:43] <durandal_1707> i still don't know what photojpeg actually is
[14:43] <yns_> :)
[14:44] <durandal_1707> yns_: where? who?
[14:44] <yns_> fflogger> Google: PJPEG - Progressive Jpeg - Acronym Finder - http://www.acronymfinder.com/Progressive-Jpeg-(PJPEG).html
[14:44] <yns_> or I misunderstood :)
[14:45] <yns_> but you wouldn't know how to encode to photo jpeg either?
[14:48] <durandal_1707> perhaps you want this:  http://en.wikipedia.org/wiki/JPEG_XR ?
[14:48] <durandal_1707> do you know any program that can create photo jpeg?
[14:49] <yns_> well according to the web it should be possible with adobe media encoder, only how is still unclear
[14:50] <yns_> i keep finding messages like. "oh yeah I always convert my vids to PJPEG with...."
[14:50] <yns_> NEVER how :(
[14:51] <durandal_1707> than convert it with same program to PJPEG and send link to sample here, i will tell you is it progressive jpeg or something else...
[14:52] <durandal_1707> but yes, progressive is not supported in our encoder, patch welcome
[14:53] <yns_> hm ok
[14:53] <yns_> I'll try
[17:00] <zimbatm> the moov header produced by h264 is half the size once passed trough MP4Box
[18:13] <zimbatm> is there an equivalent of MP4Box -inter 500 in ffmpeg ?
[18:13] <zimbatm> I tried -frag_duration but it create fragments
[18:13] <zimbatm> i'm not sure of the drawback of using them
[18:37] <burek> what is -inter 500
[18:40] <burek> yns is this what you were refering as photo jpeg? http://www.siggraph.org/education/materials/HyperGraph/video/codecs/JPEG.html
[18:42] <zimbatm> burek: it sets the interleave interval of data
[18:43] <zimbatm> -inter time_in_ms    interleaves file data (track chunks of time_in_ms)
[18:44] <Mavrik> ffmpeg does that by default
[23:29] <bcvtab> all: can someone tell me how to get 2 transport programs on the mpegts output from  avi files ?
[23:29] <bcvtab> I am able to convert single avi to mpegts but I want two avi files in two programs in mpegts
[23:29] <bcvtab> is this possbile ? ffmpeg/avconv
[23:29] <bcvtab> not able to see help in manpage or google
[23:32] <bcvtab> tried using this
[23:32] <bcvtab>  avconv -i a.avi -i b.avi  -streamid 0:1  -streamid 1:2 a.ts
[23:32] <bcvtab> but doesnt work
[23:43] <ubitux> bcvtab: make sure you map the necessary streams from a.avi and b.avi
[23:44] <ubitux> also, we can't support the fork here, so make sure you use ffmpeg
[23:49] <bcvtab> ubitux:  I tried that too. I tried avconv -i 'concat:a.avi|b.avi' -streamid 1:1 -streamid 2:2 a.ts
[23:49] <bcvtab> ubitux: Did not work.
[23:50] <bcvtab> ubitux: The 1:1 in the streamid (what is the value before and after the :) ? Is it just he arbitraty position in the concat statement ?
[23:50] <ubitux> why concat? that's not what you want to do afaict
[23:50] <ubitux> also, again, we DO NOT support avconv here
[23:50] <ubitux> it's a fork, so please stick with ffmpeg
[23:50] <ubitux> or go request help on their channel
[23:51] <bcvtab> ubitux: Sure I think at this stage of my command ffmpeg and avconv are same
[23:51] <ubitux> by "tried that too" you mean using -map?
[23:51] <bcvtab> ubitux: Did not try map. Will try now
[23:53] <bcvtab> ubitux:  avconv -i a.avi -i b.avi  -map 0:1 -map 1:2 a.ts
[23:53] <bcvtab> ubitux: Am I using this right  (the error is Stream map '1:2' matches no streams.)
[23:54] <ubitux> you want the stream #1 from the first file and the stream #2 from the second file?
[23:54] <durandal11707> perhaps -map bust be after relevant "-i" ?
[23:55] <bcvtab> that is -i a.avi -i b.avi -map 0:10 -map 1:30 -streamid 0:10 -streamid 1:30 a.ts
[23:55] <bcvtab> does that mapping seem right ?
[23:56] <ubitux> -map means "select from input"
[23:57] <ubitux> -map 0:10 means "select stream #10 from file #0"
[23:57] <ubitux> so no, it's wrong.
[23:58] <bcvtab> ubitux: So I have two streams both with stream 0.0 in them. I have to give -map  0:0 -map 1:0 -c copy a.ts  ? this way the 1st stream '0' and second stream  '0' is mapped ?
[23:59] <ubitux> that looks more correct
[23:59] <bcvtab> ffmpeg -i a.avi -i b.avi  -map 0:0 -map 1:0 -c copy a.ts
[23:59] <ubitux> yes looks better
[23:59] <ubitux> you will have 2 streams in your output now
[23:59] <bcvtab> creates a.ts with only one program in it
[00:00] --- Sun Apr 28 2013