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• Merge commit ’fc27e7272e6f1a7053812f8a15b1b7098de44c71’

  22 juillet 2014, par Michael Niedermayer

  Merge commit ’fc27e7272e6f1a7053812f8a15b1b7098de44c71’
  * commit ’fc27e7272e6f1a7053812f8a15b1b7098de44c71’ :
  
    mpegts : do not export empty language tags
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/mpegts.c

• how to reencode with ffmpeg (with limited x264)

  26 mai 2012, par sarfraz

  Until now I used this script to reencode my rips for my box (tv decoder) :

  ^_^ ( ~ ) -> cat ~/++/src/convert.sh 
  
  #! /bin/bash
  
  
  
  name=$(path -r "$1") # it gives the file name without the extension
  
  
  
  [ "$1" = *.mp4 ] && ffmpeg -i "$name".mp4 -vcodec copy -acodec copy "$name".mkv
  
  x264 --preset veryfast --tune animation --crf 18 --vf resize:720,576,16:15 -o "$name".tmp.mkv "$name".mkv
  
  mkvmerge -o "$name [freeplayer sd]".mkv "$name".tmp.mkv --no-video "$1"
  
  rm -rf "$name".tmp.mkv
  
  [ "$1" = *.mp4 ] && rm -rf "$name".mkv
  
  exit 0
  
  
  
  #EOF

  It works on my ubuntu and archlinux laptops. But it doesn’t on my desktop witch runs fedora.
  Google says that the x264 package shiped by rpmfusion doesn,t support lavf and ffms2.
  And I cannot unistall it because smplayer (witch i like) needs it.

  Ok, so I have to compile it. Google then says "you have to build ffmpeg, ffms2 tnen x264 ensuring that the flags are correctly refered." Well, didn’t work (ffms2 cannot find LIBAV - even when I am telling where - and x264 does’t configure with lavf...)

  My question is : can I use ffmpeg alone to do what my script does.
  I have ffmpeg version 0.8.11, x264 0.116.2048 59cb2eb and gcc : 4.6.1 20110804 (Red Hat 4.6.1-7)

  Any hint wound be appreciated.

  EDIT : Ok, I found that : ffmpeg -i input file -acodec copy -vcodec libx264 -preset veryfast -tune animation [that part I don’t have] output

  PS : english is not my native, plz forgive any spelling fault.

• How to encode multi audio streams with different options at the same time using ffmpeg

  20 mars 2012, par Luca Borrione

  I'm trying to encode a dvd using ffmpeg.

  $ffmpeg -i VTS_01_1.VOB
  
  Input #0, mpeg, from 'VTS_01_1.VOB':
  
  Duration: 00:38:06.52, start: 0.287267, bitrate: 3756 kb/s
  
  Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 9800 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
  
  Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s
  
  Stream #0:2[0x81]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s
  
  Stream #0:3[0x82]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s
  
  Stream #0:4[0x83]: Audio: ac3, 48000 Hz, mono, s16, 96 kb/s
  
  Stream #0:5[0x28]: Subtitle: dvd_subtitle
  
  Stream #0:6[0x29]: Subtitle: dvd_subtitle
  
  Stream #0:7[0x23]: Subtitle: dvd_subtitle
  
  Stream #0:8[0x24]: Subtitle: dvd_subtitle
  
  Stream #0:9[0x26]: Subtitle: dvd_subtitle
  
  Stream #0:10[0x27]: Subtitle: dvd_subtitle

  From the above streams I'm interested in keeping two audio streams : number 1 and 4.
  As you can see the number 4 is already 96kbps so I tried to execute a command which could treat the two streams in a different way :

  cat VTS_01_1.VOB | nice ffmpeg -i - -s 640x368 -vcodec libtheora -r 25 -b:v 1200k -an -metadata title="My Title" -pass 1 -passlogfile "/media/data/outputlog" -f ogg -y /dev/null
  
  
  
  cat VTS_01_1.VOB | nice ffmpeg -i - -map 0:0 -s 640x368 -vcodec libtheora -r 25 -b:v 1200k -async 1 -metadata title="My Title" -map 0:1 -acodec libvorbis -ac 6 -ar 48000 -b:a 192k -metadata title="english" -map 0:4 -acodec libvorbis -ac 2 -ar 48000 -b:a 96k -metadata title="commented" -pass 2 -passlogfile "/media/data/outputlog" "/media/data/output.ogv"

  What I would like to obtain is :

  Input #0, ogg, from 'output.ogv':
  
  Duration: 00:38:07.20, start: 0.000000, bitrate: 1360 kb/s
  
  Stream #0:0: Video: theora, yuv420p, 640x368 [SAR 46:45 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Stream #0:1: Audio: vorbis, 48000 Hz, stereo, s16, 192 kb/s
  
  Stream #0:2: Audio: vorbis, 48000 Hz, stereo, s16, 96 kb/s

  Instead with the above command I obtain :

  Input #0, ogg, from 'output.ogv':
  
  Duration: 00:38:07.20, start: 0.000000, bitrate: 1360 kb/s
  
  Stream #0:0: Video: theora, yuv420p, 640x368 [SAR 46:45 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Stream #0:1: Audio: vorbis, 48000 Hz, stereo, s16, 96 kb/s
  
  Stream #0:2: Audio: vorbis, 48000 Hz, stereo, s16, 96 kb/s

  So how can I specify different params for multiple audio streams ?

  BTW : I'm on lubuntu oneiric with the latest ffmpeg from git

  ffmpeg version git-2012-03-05-1007a80 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Mar  5 2012 09:40:09 with gcc 4.6.1
  
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-version3 --enable-x11grab --enable-libxvid --enable-libvpx
  
  libavutil      51. 41.100 / 51. 41.100
  
  libavcodec     54.  8.100 / 54.  8.100
  
  libavformat    54.  2.100 / 54.  2.100
  
  libavdevice    53.  4.100 / 53.  4.100
  
  libavfilter     2. 63.100 /  2. 63.100
  
  libswscale      2.  1.100 /  2.  1.100
  
  libswresample   0.  7.100 /  0.  7.100
  
  libpostproc    52.  0.100 / 52.  0.100

  Therefore the newaudio option is no more recognized