Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
ffmpeg creates incompatible xvid? [SOLVED]
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Multimedia
View previous topic :: View next topic  
Author Message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Thu May 02, 2013 7:25 pm    Post subject: ffmpeg creates incompatible xvid? [SOLVED] Reply with quote

Hi,

I've got a picky set of hardware, which play's AVI-files, but only if they're smaller than 720px, encoded with XviD, and a low enough bitrate. A DVD-player which can play stuff from USB etc. as well.

I can't recall the exact reason I upgraded to ~amd64-keyworded 1.0.6 ffmpeg, instead of the stable 0.10.7, but there was a reason of some sort.

I used to be able to create compatible videos with the following command: "ffmpeg -i MOVIE.mp4 -vtag xvid -vf "scale=720:-1" MOVIE.avi". And indeed that still successfully encodes a video that looks fine on the computer, with ffmpeg 1.0.6, but unfortunately it does not play on the hardware. It doesn't display any error messages or some such, so it's a tad difficult to discern exactly what's wrong.

Anyone here have any suggestions of a set of encoding variables for creating a AVI which might work?

For what it's worth, here's the USE-flags used for ffmpeg:

Code:
Installed versions:  1.0.6(22:08:50 2013-04-28)(X aac alsa bzip2 encode faac fftools_aviocat fftools_cws2fws fftools_ffeval fftools_fourcc2pixfmt fftools_graph2dot fftools_ismindex fftools_pktdumper fftools_qt-faststart fftools_trasher hardcoded-tables mmx mp3 network rtmp sdl theora threads truetype v4l vaapi vorbis vpx x264 xvid zlib -3dnow -3dnowext -aacplus -altivec -amr -avx -bindist -bluray -cdio -celt -cpudetection -debug -doc -examples -fdk -flite -fontconfig -frei0r -gnutls -gsm -iec61883 -ieee1394 -jack -jpeg2k -libass -libcaca -libv4l -mmxext -modplug -neon -openal -openssl -opus -oss -pic -pulseaudio -schroedinger -speex -ssse3 -static-libs -test -twolame -vdpau -vis)


Last edited by krisse on Fri Jul 19, 2013 6:11 am; edited 1 time in total
Back to top
View user's profile Send private message
Christian99
Veteran
Veteran


Joined: 28 May 2009
Posts: 1003

PostPosted: Thu May 02, 2013 11:57 pm    Post subject: Reply with quote

if u don't have a proper description, what your player can play, this could be a bit hard.
but with your commandline, the video file won't be reencoded, so if it doesn't have the right codec already, it won't have it afterwards. You only change the containerformat from mp4 to avi and write in the avi file, that the video is divx encoded no matter what it really is.
So first check what your file really contains (eg ffprobe movie.mp4) if it isn't divx u need to encode it
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Fri May 03, 2013 4:44 am    Post subject: Reply with quote

Thanks for chiming in, Christian99! Are you sure it doesn't re-encode? Well, let's add "-b:v 1500k", and it does it for sure. :-) Yes, difficult to figure out! I was hoping someone would know what had changed between ffmpeg, v0.10 and v1.0.6 which could explain it.
Back to top
View user's profile Send private message
Christian99
Veteran
Veteran


Joined: 28 May 2009
Posts: 1003

PostPosted: Fri May 03, 2013 5:10 am    Post subject: Reply with quote

not really, i just assumed it because u didn't give a video codec.
I just tried here without giving a video codec and here ffmpeg seems to choose x264 as "default" codec. What does the ffmpeg output look like at you? which codec is mentioned?

EDIT: ok the codec used depends on the output container too. if avi is used as output container, xvid is choosen as codec. So, this seems to be right.
So forget what i said :)
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Fri May 03, 2013 1:28 pm    Post subject: Reply with quote

I've got a file, both encoded from the same source file; both encoded using same set of variables for ffmpeg. One encoded by ffmpeg-1.0.6, the other by ffmpeg-0.10.7.

Having run midentify on both, a diff give only the following:
Code:
< ID_CLIP_INFO_VALUE0=Lavf53.32.100
---
> ID_CLIP_INFO_VALUE0=Lavf54.29.104
6c6
< ID_FILENAME=from-ffmpeg-0.10.7.avi
---
> ID_FILENAME=from-ffmpeg-1.0.6.avi
9,11c9,11
< ID_VIDEO_BITRATE=1484304
---
> ID_VIDEO_BITRATE=1483264


The complete midentify-info from ffmpeg-1.0.6 is as follows:
Code:
ID_VIDEO_ID=0
ID_AUDIO_ID=1
ID_CLIP_INFO_NAME0=Software
ID_CLIP_INFO_VALUE0=Lavf54.29.104
ID_CLIP_INFO_N=1
ID_FILENAME=from-ffmpeg-1.0.6.avi
ID_DEMUXER=avi
ID_VIDEO_FORMAT=xvid
ID_VIDEO_BITRATE=1483264
ID_VIDEO_WIDTH=700
ID_VIDEO_HEIGHT=394
ID_VIDEO_FPS=30.000
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=85
ID_AUDIO_BITRATE=127992
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_START_TIME=0.00
ID_LENGTH=1320.83
ID_SEEKABLE=1
ID_CHAPTERS=0
ID_VIDEO_CODEC=ffodivx
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_AUDIO_CODEC=mpg123
ID_EXIT=EOF


In other words, no help there, really. :-/
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Thu Jul 18, 2013 8:53 pm    Post subject: Reply with quote

Still having the same problems with stable ffmpeg 1.0.7... :-/
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Thu Jul 18, 2013 9:14 pm    Post subject: Reply with quote

I used (ffmpeg 0.*) to be able to produce working avis with the following command:
Code:
ffmpeg -i INPUT -sameq -vtag xvid OUTPUT.avi
(The "-vtag xvid" was needed to make it play.)

Now, it won't work. Tried to make it a bit more explicit, with
Code:
ffmpeg -i INPUT -vcodec libxvid -sameq -acodec libmp3lame -vtag xvid -f avi OUTPUT.avi


That did not help.

Ideas?
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Thu Jul 18, 2013 10:23 pm    Post subject: Reply with quote

This (mencoder) works:
Code:
mencoder INPUT.mp4 -oac mp3lame -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1500 -ffourcc XVID -o OUTPUT.avi
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Thu Jul 18, 2013 10:53 pm    Post subject: Reply with quote

OK. Think I finally found something that ticked the right boxes (and avoided ticking boxes that annoyed the hardware):
Code:
ffmpeg -i INPUT.mp4 -c:v mpeg4 -b:v 1500k -ac 2 -b:a 160k -flags +loop+mv4 -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 -subq 7 -refs 5 -me_range 16 -g 250 -qmin 10 -qmax 51 -f avi -vtag xvid OUTPUT.avi


I'm sure parts of the above aren't necessary --- and the result isn't too pretty either ---, but at least it works. At least I now know it can be made to function with >=ffmpeg-1.0 too.
Back to top
View user's profile Send private message
krisse
Guru
Guru


Joined: 15 Mar 2005
Posts: 318
Location: Sweden

PostPosted: Fri Jul 19, 2013 6:10 am    Post subject: Reply with quote

This seems more silly than anything else, but seems I might've found out the crucial option: audio bitrate.

This command didn't produce material that played on hardware:
Code:
ffmpeg -i INPUT.mp4 -b:v 1500k -vtag xvid OUTPUT.avi


This did:
Code:
ffmpeg -i INPUT.mp4 -b:v 1500k -b:a 160k -vtag xvid OUTPUT.avi


What's odd, I think, is that the first line produces 128k audio, whereas the latter makes 160k. That's the only differing line I see, as per midentify output (grepped audio):

midentify WORKED.avi | grep -i audio
Code:
ID_AUDIO_ID=1
ID_AUDIO_FORMAT=85
ID_AUDIO_BITRATE=160000
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_AUDIO_BITRATE=160000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
ID_AUDIO_CODEC=mpg123


midentify DIDNOTWORK.avi | grep -i audio
Code:
ID_AUDIO_ID=1
ID_AUDIO_FORMAT=85
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
ID_AUDIO_CODEC=mpg123
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Multimedia All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum