[MEncoder-users] Video format conversion: ffvp6f -> ffflv (?).

[R. Clayton]

I'm trying to get flv videos to work on a coby mp815 digital media player.  I
have one file the coby can show

  $ mplayer -identify -frames 0 good.flv 2>&1 | grep -i codec
  Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
  libavcodec version 53.54.100 (internal)
  Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video)
  ID_VIDEO_CODEC=ffflv
  Requested audio codec family [mpg123] (afm=mpg123) not available.
  Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
  Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)
  ID_AUDIO_CODEC=ffmp3float

  $ 

and another it can't (format error)

  $ mplayer -identify -frames 0 bad.flv 2>&1 | grep -i codec
  Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
  libavcodec version 53.54.100 (internal)
  Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash)
  ID_VIDEO_CODEC=ffvp6f
  Requested audio codec family [mpg123] (afm=mpg123) not available.
  Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
  Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)
  ID_AUDIO_CODEC=ffmp3float

  $ 

I'm guessing wildly that the problem is ffvp6f vs ffflv, and I can't figure out
how to convert from the former to the latter, or even what codec to try

  $ mencoder -ovc help
  MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team

  Available codecs:
     copy     - frame copy, without re-encoding. Doesn't work with filters.
     frameno  - special audio-only file for 3-pass encoding, see DOCS.
     raw      - uncompressed video. Use fourcc option to set format explicitly.
     nuv      - nuppel video
     lavc     - libavcodec codecs - best quality!
     vfw      - VfW DLLs, read DOCS/HTML/en/encoding-guide.html.
     qtvideo  - QuickTime DLLs, currently only SVQ1/3 are supported.
     libdv    - DV encoding with libdv v0.9.5
     xvid     - XviD encoding
     x264     - H.264 encoding

  $ 

What is the magic I need to invoke to go from ffvp6f to ffflv?  Is this even
the right track?

This is on debian testing updated weekly, if that's important.  Here are the
gory details for those really into it:

  $ mplayer -identify -frames 0 good.flv
  Failed to read /etc/mplayer/mplayer.conf.local: No such file or directory
  Warning unknown option include at line 171
  MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team
  Can't open joystick device /dev/input/js0: No such file or directory
  Can't init input joystick
  mplayer: could not connect to socket
  mplayer: No such file or directory
  Failed to open LIRC support. You will not be able to use your remote control.

  Playing good.flv.
  libavformat version 53.29.100 (internal)
  libavformat file format detected.
  ID_VIDEO_ID=0
  [lavf] stream 0: video (flv), -vid 0
  ID_AUDIO_ID=0
  [lavf] stream 1: audio (mp3), -aid 0
  VIDEO:  [FLV1]  400x224  0bpp  29.917 fps  256.0 kbps (31.2 kbyte/s)
  Clip info:
   starttime: 0
  ID_CLIP_INFO_NAME0=starttime
  ID_CLIP_INFO_VALUE0=0
   totalduration: 400
  ID_CLIP_INFO_NAME1=totalduration
  ID_CLIP_INFO_VALUE1=400
   totaldatarate: 316
  ID_CLIP_INFO_NAME2=totaldatarate
  ID_CLIP_INFO_VALUE2=316
   bytelength: 15808286
  ID_CLIP_INFO_NAME3=bytelength
  ID_CLIP_INFO_VALUE3=15808286
   canseekontime: true
  ID_CLIP_INFO_NAME4=canseekontime
  ID_CLIP_INFO_VALUE4=true
   sourcedata: BADC20742MM1328629100888801
  ID_CLIP_INFO_NAME5=sourcedata
  ID_CLIP_INFO_VALUE5=BADC20742MM1328629100888801
   purl: 
  ID_CLIP_INFO_NAME6=purl
  ID_CLIP_INFO_VALUE6=
   pmsg: 
  ID_CLIP_INFO_NAME7=pmsg
  ID_CLIP_INFO_VALUE7=
  ID_CLIP_INFO_N=8
  Load subtitles in ./
  ID_FILENAME=good.flv
  ID_DEMUXER=lavfpref
  ID_VIDEO_FORMAT=FLV1
  ID_VIDEO_BITRATE=255968
  ID_VIDEO_WIDTH=400
  ID_VIDEO_HEIGHT=224
  ID_VIDEO_FPS=29.917
  ID_VIDEO_ASPECT=0.0000
  ID_AUDIO_FORMAT=85
  ID_AUDIO_BITRATE=64000
  ID_AUDIO_RATE=22050
  ID_AUDIO_NCH=2
  ID_START_TIME=0.00
  ID_LENGTH=400.01
  ID_SEEKABLE=1
  ID_CHAPTERS=0
  ==========================================================================
  Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
  libavcodec version 53.54.100 (internal)
  Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video)
  ==========================================================================
  ID_VIDEO_CODEC=ffflv
  ==========================================================================
  Requested audio codec family [mpg123] (afm=mpg123) not available.
  Enable it at compilation.
  Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
  AUDIO: 22050 Hz, 2 ch, floatle, 64.0 kbit/4.54% (ratio: 8000->176400)
  ID_AUDIO_BITRATE=64000
  ID_AUDIO_RATE=22050
  ID_AUDIO_NCH=2
  Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)
  ==========================================================================
  AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample)
  ID_AUDIO_CODEC=ffmp3float
  Starting playback...


  Exiting... (End of file)
  ID_EXIT=EOF

  $ mplayer -identify -frames 0 bad.flv
  Failed to read /etc/mplayer/mplayer.conf.local: No such file or directory
  Warning unknown option include at line 171
  MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team
  Can't open joystick device /dev/input/js0: No such file or directory
  Can't init input joystick
  mplayer: could not connect to socket
  mplayer: No such file or directory
  Failed to open LIRC support. You will not be able to use your remote control.

  Playing bad.flv.
  libavformat version 53.29.100 (internal)
  libavformat file format detected.
  ID_VIDEO_ID=0
  [lavf] stream 0: video (vp6f), -vid 0
  ID_AUDIO_ID=0
  [lavf] stream 1: audio (mp3), -aid 0
  VIDEO:  [VP6F]  640x480  0bpp  29.970 fps  397.9 kbps (48.6 kbyte/s)
  Clip info:
   metadatacreator: Yet Another Metadata Injector for FLV - Version 1.4
  ID_CLIP_INFO_NAME0=metadatacreator
  ID_CLIP_INFO_VALUE0=Yet Another Metadata Injector for FLV - Version 1.4
   hasKeyframes: true
  ID_CLIP_INFO_NAME1=hasKeyframes
  ID_CLIP_INFO_VALUE1=true
   hasVideo: true
  ID_CLIP_INFO_NAME2=hasVideo
  ID_CLIP_INFO_VALUE2=true
   hasAudio: true
  ID_CLIP_INFO_NAME3=hasAudio
  ID_CLIP_INFO_VALUE3=true
   hasMetadata: true
  ID_CLIP_INFO_NAME4=hasMetadata
  ID_CLIP_INFO_VALUE4=true
   canSeekToEnd: true
  ID_CLIP_INFO_NAME5=canSeekToEnd
  ID_CLIP_INFO_VALUE5=true
   datasize: 78346577
  ID_CLIP_INFO_NAME6=datasize
  ID_CLIP_INFO_VALUE6=78346577
   videosize: 69094725
  ID_CLIP_INFO_NAME7=videosize
  ID_CLIP_INFO_VALUE7=69094725
   audiosize: 8875104
  ID_CLIP_INFO_NAME8=audiosize
  ID_CLIP_INFO_VALUE8=8875104
   lasttimestamp: 1380
  ID_CLIP_INFO_NAME9=lasttimestamp
  ID_CLIP_INFO_VALUE9=1380
   lastkeyframetimestamp: 1380
  ID_CLIP_INFO_NAME10=lastkeyframetimestamp
  ID_CLIP_INFO_VALUE10=1380
   lastkeyframelocation: 78358329
  ID_CLIP_INFO_NAME11=lastkeyframelocation
  ID_CLIP_INFO_VALUE11=78358329
  ID_CLIP_INFO_N=12
  Load subtitles in ./
  ID_FILENAME=bad.flv
  ID_DEMUXER=lavfpref
  ID_VIDEO_FORMAT=VP6F
  ID_VIDEO_BITRATE=397920
  ID_VIDEO_WIDTH=640
  ID_VIDEO_HEIGHT=480
  ID_VIDEO_FPS=29.970
  ID_VIDEO_ASPECT=0.0000
  ID_AUDIO_FORMAT=85
  ID_AUDIO_BITRATE=48000
  ID_AUDIO_RATE=22050
  ID_AUDIO_NCH=1
  ID_START_TIME=0.00
  ID_LENGTH=1379.97
  ID_SEEKABLE=1
  ID_CHAPTERS=0
  ==========================================================================
  Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
  libavcodec version 53.54.100 (internal)
  Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash)
  ==========================================================================
  ID_VIDEO_CODEC=ffvp6f
  ==========================================================================
  Requested audio codec family [mpg123] (afm=mpg123) not available.
  Enable it at compilation.
  Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
  AUDIO: 22050 Hz, 1 ch, floatle, 48.0 kbit/6.80% (ratio: 6000->88200)
  ID_AUDIO_BITRATE=48000
  ID_AUDIO_RATE=22050
  ID_AUDIO_NCH=1
  Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)
  ==========================================================================
  AO: [alsa] 48000Hz 1ch floatle (4 bytes per sample)
  ID_AUDIO_CODEC=ffmp3float
  Starting playback...


  Exiting... (End of file)
  ID_EXIT=EOF

  $