[MPlayer-users] 3gp video plays too fast

[RVM]

I have some 3gp files which previously played ok. Now they play very fast. It 
seems now mplayer uses lavfpref as demuxer while previously it used mov, so I 
think it's a bug in the new demuxer:

mplayer video.3gp -identify

MPlayer dev-SVN-r25927-3.3.4 (C) 2000-2008 MPlayer Team
CPU: AMD Athlon(tm) 64 Processor 3400+ (Family: 15, Model: 4, Stepping: 10)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2
/home/ricardo/.fonts/arialbd.ttf doesn't look like a bitmap font description, 
ignoring.
Cannot load bitmap font: /home/ricardo/.fonts/arialbd.ttf
mplayer: could not connect to socket
mplayer: Permission denied
Failed to open LIRC support. You will not be able to use your remote control.

Playing video.3gp.
libavformat file format detected.
ID_VIDEO_ID=0
[lavf] Video stream found, -vid 0
ID_AUDIO_ID=1
[lavf] Audio stream found, -aid 1
VIDEO:  [s263]  176x144  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
ID_FILENAME=video.3gp
ID_DEMUXER=lavfpref
ID_VIDEO_FORMAT=s263
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=176
ID_VIDEO_HEIGHT=144
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=1.3333
ID_AUDIO_FORMAT=samr
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=8000
ID_AUDIO_NCH=1
ID_LENGTH=29.60
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh263] vfm: ffmpeg (FFmpeg H.263+ decoder)
==========================================================================
ID_VIDEO_CODEC=ffh263
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Cannot find codec 'libamr_nb' in libavcodec...
ADecoder init failed :(
ADecoder init failed :(
Cannot find codec for audio format 0x726D6173.
Read DOCS/HTML/en/codecs.html!
Audio: no sound
Starting playback...
VDec: vo config request - 176 x 144 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
ID_VIDEO_ASPECT=1.3333
VO: [xv] 176x144 => 192x144 Planar YV12
V:   3.0  28/ 28  8%  2%  0.0% 0 0
Exiting... (Quit)


mplayer video.3gp -identify -demuxer mov

MPlayer dev-SVN-r25927-3.3.4 (C) 2000-2008 MPlayer Team
CPU: AMD Athlon(tm) 64 Processor 3400+ (Family: 15, Model: 4, Stepping: 10)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2
/home/ricardo/.fonts/arialbd.ttf doesn't look like a bitmap font description, 
ignoring.
Cannot load bitmap font: /home/ricardo/.fonts/arialbd.ttf
mplayer: could not connect to socket
mplayer: Permission denied
Failed to open LIRC support. You will not be able to use your remote control.

Playing video.3gp.
ISO: File Type Major Brand: 3GPP Profile 5
Quicktime/MOV file format detected.
ID_VIDEO_ID=0
[mov] Video stream found, -vid 0
ID_AUDIO_ID=1
[mov] Audio stream found, -aid 1
MOV: unknown sound atom version (-1073751176); may not work!
VIDEO:  [s263]  176x144  24bpp  2.525 fps    0.0 kbps ( 0.0 kbyte/s)
ID_FILENAME=video.3gp
ID_DEMUXER=mov
ID_VIDEO_FORMAT=s263
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=176
ID_VIDEO_HEIGHT=144
ID_VIDEO_FPS=2.525
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=samr
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=8000
ID_AUDIO_NCH=1
ID_LENGTH=29.22
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh263] vfm: ffmpeg (FFmpeg H.263+ decoder)
==========================================================================
ID_VIDEO_CODEC=ffh263
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Cannot find codec 'libamr_nb' in libavcodec...
ADecoder init failed :(
ADecoder init failed :(
Cannot find codec for audio format 0x726D6173.
Read DOCS/HTML/en/codecs.html!
Audio: no sound
Starting playback...
VDec: vo config request - 176 x 144 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
ID_VIDEO_ASPECT=1.3333
VO: [xv] 176x144 => 192x144 Planar YV12
V:   3.9  37/ 37  1%  0%  0.0% 0 0
Exiting... (Quit)


See that for lavfpref the video is 29.970 fps while for mov is 2.525 fps which 
I think is the correct.

The problem can be reproduced with this video:
http://www1.mplayerhq.hu/MPlayer/samples/mobileVideo_3gp/MrBean.3gp

-- 
RVM