[Ffmpeg-devel-irc] ffmpeg.log.20121014

[burek]

[00:10] <lake> burek: regarding the ticket https://ffmpeg.org/trac/ffmpeg/ticket/1808, i am unable to convert test.avi with the "-filter:v yadif=1,format=yuv420p" filter. I still get nable to parse option value "-1" as pixel format
[00:10] <lake> Error opening filters!
[00:10] <lake> s/nable/unable
[00:12] <lake> burek: http://pastie.org/5054514
[04:51] <lake> relaxed: http://pastie.org/5054514 would you mind taking a peak at that and double checking it for me?
[05:31] <retardant> does -g even exist in the current code base
[05:31] <retardant> wtf is a group of picture size
[05:32] <retardant> keyframe related?
[05:32] <retardant> what's the best ay to force 1 frame rate key frames
[05:32] <retardant> so in this case 30 seconds
[05:33] <retardant> need to scrub the video in adobe flash with some reasonable precision
[05:35] <retardant> okay so gop is analogous to i-frame
[05:36] <retardant> http://ffmpeg.org/pipermail/ffmpeg-user/2011-September/002349.html ?
[05:48] <duvnell2> hi, I'm trying to use ffmpeg to convert the audiostream from any given file into .wav floating point sample format
[05:50] <duvnell2> my command line is:  ffmpeg  -i input_file.ext -map 0:0 -af "aconvert=flt:auto" -y foo.wav
[05:50] <duvnell2> but it's always converting to s16
[05:50] <duvnell2> any ideas?
[05:54] <duvnell2> even trying u8 for the format doesn't affect it.,. it's almost as if ffmpeg believes .wav only supports s16
[06:24] <duvnell2> pastebin: http://pastebin.com/fQyqYgXH
[06:50] <funyun> hi. is anyone familiar with dvdauthor?
[07:03] <squeezed> is it possible for ffmpeg to transcode (or post process) to a "streamable" mp4?
[12:55] <I_Died_Once> Does ffmpeg have a quick and easy way of detecting and adding the padfilter? Trying to convert a 2.35:1 (letterbox) movie file to DVD and I can not get the padfilter correct for the life of me
[12:56] <saste> I_Died_Once, no you need a two steps process
[12:56] <I_Died_Once> would like to convert said movie to DVD without skewing the video in the process
[12:57] <saste> "detecting and adding the padfilter" what do you mean?
[12:57] <I_Died_Once> saste, thanks for a responce!
[12:57] <I_Died_Once> i'm trying to convert this letterbox file to regular old DVD without messing up the video
[12:58] <I_Died_Once> saste, can you give me some sort of an example on how you would go about it ?
[12:59] <saste> you basically want to preserve the aspect ratio or what?
[12:59] <saste> you can find examples in the ffmpeg manual, in the pad section
[12:59] <I_Died_Once> yeah... i was trying to instert the pads on top & bottom
[12:59] <saste> scripting may also be in order
[12:59] <I_Died_Once> I keep jacking up the video and stretching
[13:00] <I_Died_Once> I'm over here thinking "it cant be THIS difficult"
[13:00] <saste> I_Died_Once, command and output, i don't even know what you're trying to achieve
[13:01] <I_Died_Once> I'm only wanting to achieve transferring this video to DVD format without skewering or stretching the video
[13:02] <I_Died_Once> which is turning out to be a massive pain
[13:02] <saste> I_Died_Once, pad should be enough
[13:03] <saste> but you need to master the expression evaluation in ffmpeg
[13:03] <saste> that may be a pain
[13:03] <I_Died_Once> agreed
[13:03] <saste> but there are already several related examples which should get you a start
[13:03] <I_Died_Once> thats why I was hoping for help with the exact command, i cant get it right
[13:04] <saste> i can't read you mind (yet), don't know what you want to exactly achieve
[13:05] <saste> also you should show some effort, if you want people help you
[13:05] <I_Died_Once> aww man that hurts, i've wasted many gigs trying to get this correct to no avail so far
[13:06] <I_Died_Once> people with warped looking heads
[14:56] <bigmeow> hi all
[14:56] <bigmeow> how to convert flv to mp3?
[15:06] <ubitux> bigmeow: is the audio track in flv already in mp3?
[16:08] <shevy> Unknown encoder 'xvid'
[16:08] <shevy> anyone knows how to get a list of valid encoders for video options?
[16:26] <relaxed> shevy: ffmpeg -codecs
[16:26] <relaxed> external codecs are prefixed with "lib"- libxvid
[16:27] <shevy> ah ok cool, thanks
[16:27] <bigmeow> ubitux: how to know if the audio track is in flv?
[16:27] <bigmeow> http://superuser.com/questions/487599/why-i-cannot-convert-flv-format-to-mp4-formate-using-ffmpeg
[16:28] <ubitux> ffprobe
[17:14] <creep> heheh ffmpeg makes my cpu work Cpu(s): 98.3%us
[17:49] <creep> tried to convert 320x200 Stream #0:0 -> #0:0 (zmbv -> libx264)  using placebo preset Q=32 and there is fair amount of noise at moving parts, and the size is about 1/3 only
[17:49] <creep> it is recodring from dosbox
[17:51] <relaxed> full command
[17:52] <ubitux> bigmeow: ffprobe in.flv, if you see mp3 ’ ffmpeg -i in.flv -c:a copy out.mp3, otherwise you need to re-encode: ffmpeg -i in.flv -q:a 0 out.mp3
[17:52] <creep> ffmpeg -i ./game_003.avi -vcodec libx264 -preset placebo game_003.mkv
[17:53] <relaxed> add -crf 18
[17:54] <creep> libx264 writes crf=23
[17:54] <creep> that is too high?
[17:55] <relaxed> Seems to be, doesn't it? -tune animation may be beneficial as well.
[17:58] <creep> thanks
[18:19] <creep> trying out animation tuning
[18:21] <creep> crf18 is better but since its redalert, only a very few parts are moving...
[18:38] <Spideru> I have read this http://ffmpeg.org/trac/ffmpeg/wiki/Streaming%20media%20with%20ffserver . So, there is a way to feed server from ffmpeg with TLS?
[18:59] <I_Died_Once> alright, hopefully I can get some help this time
[18:59] <I_Died_Once> http://pastebin.com/7rwc6bDT
[19:00] <I_Died_Once> long story short - I have a letterbox movie with an aspect ratio 2.35:1
[19:01] <I_Died_Once> I am wanitng to put that on a standard ntsc dvd disc, but i dont want to distort the image
[19:01] <I_Died_Once> dont want to distort and skewer the video when putting it to DVD
[19:13] <creep> I_Died_Once<< you were wasted? ;/
[19:13] <I_Died_Once> heh, yeah
[19:14] <I_Died_Once> has anyone ever needed to convert a 2.35:1 video to DVD before?
[19:16] <cbsrobot_> I_Died_Once: sure
[19:16] <cbsrobot_> and now you want the command line to do that ?
[19:16] <I_Died_Once> I'd love you for it
[19:17] <I_Died_Once> I keep getting distorted looking heads
[19:18] <cbsrobot_> ffmpeg -i '/Dimension5150/movie.mp4' -vf pad=1280:720:0:92,setdar=16:9 -target ntsc-dvd movie.mpg
[19:19] <creep> crf=18 h264 mkv is 9MB vs 32MB zmbv avi
[19:19] <creep> with lots of standstill area
[19:19] <creep> ;/
[19:22] <I_Died_Once> cbsrobot_ - thats nice, but the image is on the left hand side of the screen
[19:22] <I_Died_Once> let me get a screenshot to show
[19:23] <I_Died_Once> http://i.imgur.com/Ca73T.png
[19:24] <saste> I_Died_Once, so you want to center the image?
[19:24] <I_Died_Once> yeah
[19:26] <saste> did you try this: pad="ih*16/9/sar:ih:(ow-iw)/2:(oh-ih)/2"
[19:27] <I_Died_Once> trying now
[19:27] <I_Died_Once> Error when evaluating the expression 'ih*16/9/sar'
[19:28] <saste> and the error is?
[19:28] <I_Died_Once> the next line after that is: Error opening filters!
[19:28] <I_Died_Once> then i get my command prompt back
[19:29] <I_Died_Once> http://pastebin.com/1HUG6xkA
[19:30] <I_Died_Once> no encoding takes place
[19:31] <saste> can you update your ffmpeg?
[19:31] <saste> "sar" variable is not supported in your build
[19:31] <I_Died_Once> checking
[19:31] <I_Died_Once> I'm running debian linux
[19:33] <I_Died_Once> says I have the lastest version installed.... version 6:0.8.3-7
[19:33] <saste> try pad="ih*16/9:ih:(ow-iw)/2:(oh-ih)/2"
[19:33] <saste> works in case you have sar=1/1, which cannot be assumed
[19:34] <I_Died_Once> alright, its coding
[19:34] <saste> also debian ships libav fork, which is not proper ffmpeg
[19:34] <saste> check !wiki
[19:35] <I_Died_Once> that last pad option stretches the video
[19:35] <saste> allright, then you should try an updated version
[19:36] <saste> sar variable was added more than one year ago
[19:36] <I_Died_Once> ok, ok...
[19:36] <saste> also aspect ratio is doing funny things
[19:41] <saste> I_Died_Once, also the version shipped by Debian is usually at least one year/six months behind the main development trunk
[19:41] <I_Died_Once> gotcha
[19:41] <I_Died_Once> I'm updating and getting a newer version from debian-multimedia
[19:41] <I_Died_Once> they have7:1.0-dmo1
[19:42] <saste> should be ok
[19:42] <I_Died_Once> from their unstable branch
[19:42] <I_Died_Once> (oohh unstable!)
[19:42] <saste> in the wiki you find compilation instructions, it's not that hard
[19:43] <I_Died_Once> i apreciate the help, seriously
[21:02] <hackeron> hey, I want to record from the rtsp source, but I want to save the video to files like file_minute1.mp4 file_minute2.mp4, etc - so every minute I want ffmpeg to record to a new file. I tried to just do a while loop with ffmpeg recording for 1 minute duraction, but that creates gaps. Any ideas?
[21:03] <lake> what does this error mean?
[21:03] <lake> Unable to parse option value "-1" as pixel format
[21:08] <hackeron> I'm trying to do:  ffmpeg -i rtsp://192.168.88.11/ -vcodec copy -acodec copy -f segment -segment_time 60 -y "test-%03d.mp4"  - but that shows "Output file #0 does not contain any stream" -- If I replace -f segment with -f mp4, it works but the output is not in segments. Any ideas?
[21:16] <hackeron> ah, I was missing -map 0
[21:56] <creep> ffmpeg -i ./game_003.avi -vcodec libx264 -preset placebo -crf 18 -tune animation game_003_placebo_crf18_anim.mkv
[21:56] <creep> hmm, stills are good, but the grass is still "moving" a bit after the moving units
[21:57] <creep> and 10MB h264 mkv vs 32MB avi...
[21:59] <lake> I am trying this command
[21:59] <lake> ffmpeg -f alsa -i default -f v4l2 -s 640x480 -i /dev/video0 -acodec flac -vcodec libx264 out.mkv
[21:59] <lake> but no audio is played when i `mplayer out.mkv`
[22:01] <creep> default  may be muted or wrong
[22:01] <creep> microphone and line in is muted by default...
[22:05] <lake> ffmpeg -f alsa -i hw:6,0 -f v4l2 -s 640x480 -i /dev/video0 -acodec flac -vcodec libx264 out.mkv
[22:05] <lake> hw:6,0 is my correct input.
[22:06] <lake> still no audio
[22:11] <creep> lake<< tried unmuting and selecting alsa mixer input ?
[22:13] <creep> redalert short video using above command line http://www.sendspace.com/file/gzldee
[22:16] <duvnell2> http://pastebin.com/fQyqYgXH
[22:16] <duvnell2> hi, I'm trying to use ffmpeg to convert the audiostream from any given file into .wav floating point sample format
[22:16] <duvnell2> my command line is:  ffmpeg  -i input_file.ext -map 0:0 -af "aconvert=flt:auto" -y foo.wav 10:50:02 PM
[22:16] <duvnell2> but it's always converting to s16
[22:17] <duvnell2> even trying u8 for the format doesn't affect it.,. it's almost as if ffmpeg believes .wav only supports s16
[22:17] <duvnell2> any ideas?
[22:23] <ubitux> duvnell2: -c:a pcm_f32be or pcm_f32le maybe?
[22:24] <ubitux> unfortunately i don't know if you can put float in a wav
[22:24] <ubitux> at least our muxer doesn't seem to know how to
[22:24] <ubitux> but you can generate raw pcm in float
[22:26] <creep> against boredness, redalert short video, with a little hack in memory http://www.sendspace.com/file/gzldee
[22:26] <creep> peek&poke
[22:54] <barque> is the libavcodec(-dev) that ships with Debian old as the mountains?
[22:55] <barque> Honestly, it's so old it doesn't even have the AVPacket struct
[22:55] <barque> anyone able to confirm?
[22:56] <ubitux> you should complain to debian then :p
[22:56] <barque> I am actually :P
[22:56] <ubitux> and btw, debian is not packaging ffmpeg
[22:56] <ubitux> but the fork
[22:56] <garulf> Hi guys. I've an mkv with an x264 stream, but my projector doesn't read the file. How can i convert to avi mpeg4 without loosing quality?
[22:56] <barque> I actually have ffmpeg
[22:56] <barque> on Debian
[22:56] <barque> right atm
[22:57] <ubitux> garulf: you'll likely loose some quality, and increase file size
[22:57] <ubitux> you can try -q:v 0
[22:59] <barque> does all this mean I have to checkout ffmpeg?
[22:59] <garulf> ubitux, ok thanks I will. I don't mind loosing a bit of quality, but I'm tried to convert without any option and the output quality is very poor..
[22:59] <ubitux> barque: what do you expect us to do?
[23:00] <barque> oh nothing :D
[23:00] <ubitux> :)
[23:00] <barque> I'm wondering if a checkout'll help :]
[23:00] <barque> git/svn/whatever
[23:01] <ubitux> yes, git :)
[23:05] <barque> actually yeah they have more up to date headers and libs on a quote non-free repo unquote
[23:06] <barque> I guess ffmpeg is not free
[23:06] <barque> as in libre
[23:06] <barque> cough narcissists cough
[23:08] <ubitux> non-free repo?
[23:11] <barque> yeah they have to separate what they don't consider to be completely "free" software from free software that is tainted with non-free components
[23:12] <barque> s/don't/do
[23:12] <ubitux> i don't understand your apparently troll joke :p
[23:13] <barque> lol it is a joke, but I'm not trolling
[23:13] <barque> you don't remember the whole firefox and iceweasel thing?
[23:13] <ubitux> sure
[23:13] <barque> just because the firefox logo was non-free they made their own branch and called it iceweasel
[23:13] <barque> I think regarding ffmpeg they see the same distinction or something
[23:13] <ubitux> right
[23:14] <barque> or maybe a whole bunch of stuff they wrapped together and put it on a multimedia repository
[23:14] <ubitux> oh right i think i get it
[23:14] <barque> under the 'non-free' category
[23:14] <ubitux> well when i was talking about the fork
[23:14] <ubitux> i wasn't talking about debian packaging ffmpeg under a different name
[23:14] <ubitux> i mean they are packaging a real fork (called libav)
[23:14] <ubitux> (and under the ffmpeg name)
[23:15] <barque> yeah something or other
[23:16] <barque> I bet they're hosting the non-free stuff from a server in Poland
[23:16] <barque> that you can only reach after a long train ride
[23:16] Action: barque grumbles
[23:19] <barque> I'm honestly sorry if I offended anyone with that joke
[00:00] --- Mon Oct 15 2012