June 2008 - MEncoder-users - lists.mplayerhq.hu

divx v's x264
by Alex Samad 10 Jun '08

10 Jun '08

Hi I have been running some test of re encoding my dv files I have taken of a panasonic DV camera. I have encoded to divx and to x264, it seems like the x264 files are a little bit bigger. and the quality (visual only) seems to be about the same both are 2 pass here is the divx mencoder -really-quiet -vf scale=::::::qpal,hqdn3d=2:1:2,pp=de,uspp=5,harddup -af volnorm=1 -ovc lavc -lavcopts vcodec=mpeg4:vpass=1:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vmax_b_frames=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:qns=2:autoaspect:vbitrate=250 -oac mp3lame -lameopts preset=medium -passlogfile "/tmp/user/1000/myConvert.Yyxb_/divx2pass.log" -o /dev/null "../src/video/Dimitra/wedding-2008.02.28_13-11-32.avi" -idx -ffourcc DX50 nice mencoder -really-quiet -vf scale=::::::qpal,hqdn3d=2:1:2,pp=de,uspp=5,harddup -af volnorm=1 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vmax_b_frames=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:qns=2:autoaspect:vbitrate=250 -oac mp3lame -lameopts preset=medium -passlogfile "/tmp/user/1000/myConvert.Yyxb_/divx2pass.log" -o "/tmp/user/1000/myConvert.Yyxb_/wedding-2008.02.28_13-11-32.avi" "../src/video/Dimitra/wedding-2008.02.28_13-11-32.avi" -idx -ffourcc DX50 here is the x264 mencoder -really-quiet -vf scale=::::::qpal,hqdn3d=2:1:2,pp=de,uspp=5,harddup -af volnorm=1 -ovc x264 -x264encopts pass=1:turbo=2:nocabac:nob_pyramid:subq=6:frameref=3:partitions=all:me=umh:bframes=3:weight_b:threads=auto:qcomp=0.75:mixed_refs:nofast_pskip:trellis=2:nodct_decimate:nopsnr:brdo:bitrate=250 -oac mp3lame -lameopts preset=medium -passlogfile "/tmp/user/1000/myConvert.I_qdD/divx2pass.log" -o /dev/null "../src/video/Dimitra/wedding-2008.02.28_13-11-32.avi" -idx mencoder -really-quiet -vf scale=::::::qpal,hqdn3d=2:1:2,pp=de,uspp=5,harddup -af volnorm=1 -ovc x264 -x264encopts pass=2:nocabac:nob_pyramid:subq=6:frameref=3:partitions=all:me=umh:bframes=3:weight_b:threads=auto:qcomp=0.75:mixed_refs:nofast_pskip:trellis=2:nodct_decimate:nopsnr:brdo:bitrate=250 -oac mp3lame -lameopts preset=medium -passlogfile "/tmp/user/1000/myConvert.I_qdD/divx2pass.log" -o "/tmp/user/1000/myConvert.I_qdD/wedding-2008.02.28_13-11-32.avi" "../src/video/Dimitra/wedding-2008.02.28_13-11-32.avi" -idx I have left the x264 in an avi file. 8467432 wedding-2008.02.28_13-11-32-divx.avi 8470152 wedding-2008.02.28_13-11-32-x264.avi Am i doing something silly ? I was under the impression that x264 was meant to give smaller files. -- "See, in my line of work you got to keep repeating things over and over and over again for the truth to sink in, to kind of catapult the propaganda." - George W. Bush 05/24/2005 Greece, NY

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Re: [MEncoder-users] Audio / Video Sync issue
by karl-heinz-1950＠web.de 09 Jun '08

09 Jun '08

<MENCODER-USERS(a)MPLAYERHQ.HU> > How should that work? I already have mpeg2 stream so I have to copy. > What exactly shall I do? Yes, you already have a mpeg stream, and you're trying to make another mpeg stream out of it? Is there something wrong with the first one? :) The vob plays in mplayer, but I can't fast forward or jump to a certain position. The output mpg works fine in that regards. Don't know what the reason for that problem is, vobcopy should just dump the file from DVD to HDD so I'm unsure if it is a vobcopy bug. EINE FÜR ALLE: die kostenlose WEB.DE-Plattform für Freunde und Deine Homepage mit eigenem Namen. Jetzt starten! *http://unddu.de/?kid=kid@mf2* [http://unddu.de/?kid=kid@mf2]

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is this possible at all?
by Perry Kappetein 09 Jun '08

09 Jun '08

i'm trying to figure out if its possible with mencoder, to get the dvd information what i am trying to make is a windows GUI for mencoder. so that it will show the information, so that i can select the track / audio etc, for conversion. thank you p

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Re: [MEncoder-users] Audio / Video Sync issue
by karl-heinz-1950＠web.de 08 Jun '08

08 Jun '08

> > There's a remote chance that the A-V sync will line-up by itself if he > stops using -ovc copy -oac copy... How should that work? I already have mpeg2 stream so I have to copy. What exactly shall I do? Thanks! _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000066

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Re: [MEncoder-users] Audio / Video Sync issue
by karl-heinz-1950＠web.de 08 Jun '08

08 Jun '08

> OP implicitly knew that already though, has he experienced async on > remux. I guess he wanted to know how to fix that though, and telling > him to > * use the delay option > * find out how large the delay might be > isn't very helpful at all I'd say. > > Helpful would be "find the value of a possible delay in the source > stream by xy means and then apply that with the delay option on > remuxing". > > There may even be alternative options, like automagically including > silence or whatever. The mpeg stream demuxer has the knowledge after > all, might give some hint or even assist in fixing this. Some more information: - I use mplayer to play the file - Guessing the delay to 0.5 seems to be okay - I'm using MEncoder 1.0rc2-SUSE Linux 10.2 (i686)-Packman-4.1.2 But then there is really the question, do I have to guess? Is there some Linux tool to find out the delay? About the -delay option the online documentation says "NOTE: When used with MEncoder, this is not guaranteed to work correctly with −ovc copy; use −audio−delay instead." I'm using -ovc copy, anyone any background information on what problem I might run into? I wanted to use the -audio-delay option then, but it says it only works for avi... Thanks so far! _________________________________________________________________________ In 5 Schritten zur eigenen Homepage. Jetzt Domain sichern und gestalten! Nur 3,99 EUR/Monat! http://www.maildomain.web.de/?mc=021114

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Audio / Video Sync issue
by karl-heinz-1950＠web.de 07 Jun '08

07 Jun '08

Hello, I have the following: DVD: Audio / Video Sync is okay VOB: vob file created on hard disk using vobcopy. File on hard disk audio / video sync is okay MPG: used mencoder to create an mpeg file out of it, I've tried different options: mencoder -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -o outfile.mpg infile.vob mencoder -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -vf harddup -o outfile.mpg infile.vob mencoder -forceidx -of mpeg -mpegopts format=dvd:tsaf -oac copy -ovc copy -vf harddup -o outfile.mpg infile.vob Result is for all versions the same, the video / audio is out of sync. It looks like that the lag between audio and video is constant and doesn't increase over time (in case that matters), I would say it is about 0.5 - 1s, you clearly see people moving the mouth and then you hear what they say, so sound is behind. Any idea? Thanks! _______________________________________________________________________ EINE FÜR ALLE: die kostenlose WEB.DE-Plattform für Freunde und Deine Homepage mit eigenem Namen. Jetzt starten! http://unddu.de/?kid=kid@mf2

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Urgent Problem:
by Hareem Haque 06 Jun '08

06 Jun '08

*Hi. I am having some problems with the mencoder. I am trying to convert video to .flv and mp4 format. The conversion gets done 100% the problem is that the video and audio are not synced. How do i solve this problem out. Please advise. Regards Hareem. *

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Re: [MEncoder-users] problem with big files
by a a 06 Jun '08

06 Jun '08

Hello, all James Hastings-Trew wrote: >Presumably these oversized avi files did not arrive on your machine unbidden. Yes, they are the output of capturing from tv-card by streamer program of xawtv application on a linux( Ubuntu=7.10-amd64 on a 2-core intel cpu computer). >They came from somewhere, and if the spec for AVI limits file size to 4Gb, regardless of what your file system can handle, then, by definition, any AVI larger than 4Gb is broken. Do you know that xawtv ? Its output files can be played with the same version of mplayer that i use its mencoder for encoding (1.0rc2-4.1.3) (the newest stable version of mplayer & mencoder) Thus probably there is not problem related to avi format. and mplayer and mencoder as the "The Wanderer" tells in bellow can work with more that 4 Gig .avi files. The Wanderer wrote: >MPlayer and MEncoder can support OpenDML, both when muxing and when demuxing. >We do not presently have any idea whether or not the files 'a a' is using are OpenDML AVIs or not, but because they are having failures at the 4GB mark, the likelihood is that they are not. Thanks to "The Wanderer" Do you know the xawtv? that is an application in linuxes for tv watching and capturing and my version is 3.95.dfsg.1-6ubuntu1 .i used it for capturing those big sized .avi files. with format of mjpeg format in .avi container and those big .avi files can be played with the mplayer, but when encding with mencoder of same version, that problem occurred :-( I emphasized that i am using this combination of xawtv and mencoder for about 6 month for capturing many films from this tv-card, without any problem related to file size( all of other my capture files are less than 4 Gig, of course.) Is there any other idea for solving this problem ? thanks Send instant messages to your online friends http://uk.messenger.yahoo.com

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Re: [MEncoder-users] problem with big files
by a a 06 Jun '08

06 Jun '08

James Hastings-Trew wrote: >May I ask where these large .avi files originated from? If there is a >4Gb limit on the .avi container itself, then whatever step is making the .avi files that large to begin with would seem to be where the flaw is. As I mentioned in http://lists.mplayerhq.hu/pipermail/mencoder-users/2008-May/008939.html my input files are resided on ext3 filesystem and this is not the cause of problem. The only size related cause of problem that i guess is that, in the encoding process from begining of input file to its end the encoding is being done regularly, until when encoder reaches the 4096M of its input file's size (and not the output file), at this point the encoding cuts. ( and at this point the output file's size is about 3.1 Mega Bytes.) Thus no problem is with the type of silesystem. The problem is inside of mencoder. Is there anyone knowing the solution ? thanks Send instant messages to your online friends http://uk.messenger.yahoo.com

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parsing m2ts files
by James Hastings-Trew 06 Jun '08

06 Jun '08

Because of the decoder errors I encountered with m2ts files containing h264 video streams (noted previously) I updated my mplayer and mencoder to the latest versions. Unfortunately, the problem remains. Because of this, I'm having to decode the video with an AviSynth script rather than directly. Is there a problem with mplayer/mencoder's h264 decoder that is not shared by the DirectShow decoder (default or ffdshow), because when I use either of those decoders, all of the visual errors (smearing, coloured macroblocks) vanish. AviSynth handling is definitely not a cross-platform solution, and is quite a bit slower than being able to directly read the files.

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