[MEncoder-users] problem with low fps cell phone video

Jon Drukman jsd at cluttered.com
Tue Apr 18 23:03:49 CEST 2006


a friend gave me a video from his cell phone, here's what -identify says 
about it:

MPlayer 1.0pre7try2-3.4.3 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices Opteron Sledgehammer (Family: 8, Stepping: 1)
Detected cache-line size is 64 bytes
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


Playing 805522797_ORIG.mov.
QuickTime/MOV file format detected.
--------------
MOV track #0: 5 chunks, 54 samples
ID_VIDEO_ID=0
MOV: Found MPEG4 movie Elementary Stream Descriptor atom (77)!
Image size: 320 x 240 (24 bpp)
Display size: 320 x 240
Fourcc: mp4v  Codec: ''
--------------
MOV track #1: 5 chunks, 0 samples
ID_AUDIO_ID=1
MOV: unable to determine audio samplerate, assuming 44.1kHz (got 5512)
Audio bits: 16  chans: 1  rate: 44100
Fourcc: sowt
--------------
MOV: longest streams: A: #1 (5 samples)  V: #0 (54 samples)
VIDEO:  [mp4v]  320x240  24bpp  2.732 fps    0.0 kbps ( 0.0 kbyte/s)
ID_FILENAME=805522797_ORIG.mov
ID_VIDEO_FORMAT=mp4v
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=320
ID_VIDEO_HEIGHT=240
ID_VIDEO_FPS=2.732
ID_VIDEO_ASPECT=0.0000
ID_LENGTH=5
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffodivx] vfm:ffmpeg (FFmpeg MPEG-4)
==========================================================================
Audio: no sound
Starting playback...
VDec: vo config request - 320 x 240 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
VO: [null] 320x240 => 320x240 Planar YV12


i need to convert this, ultimately to flv, but right now i'm just doing 
avi to keep things simple.  here's the command line:

/opt/mplayer64/mencoder 805522797_ORIG.mov -o treo.avi -oac mp3lame -ovc 
lavc

the resulting file video plays ok, but the audio is a high speed blur 
that ends almost immediately.  probably related to this, output at the 
end of the mencoder process:

Video stream:  217.510 kbit/s  (27188 B/s)  size: 139315 bytes  5.124 
secs  54 frames

Audio stream:  133.609 kbit/s  (16701 B/s)  size: 9598 bytes  0.575 secs

i notice audio 0.575 secs, which sounds about right.  i've tried setting 
-ofps, using combos of -mc 0 and -noskip, -srate, but nothing seems to 
get the audio to play properly.  what am i missing?

thanks
-jsd-




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