[MPlayer-users] time scale problem, bug ?

[Pupeno]

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Hello mplayer users/developers.
I'm having a weird problem with mplayer... I'll descrive it with an example.
I have a video that with mplayer -identify reports the following information
ID_VIDEO_FORMAT=0x10000001
ID_VIDEO_BITRATE=480000
ID_VIDEO_WIDTH=320
ID_VIDEO_HEIGHT=240
ID_VIDEO_FPS=24.000
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_CODEC=mp3
ID_AUDIO_FORMAT=80
ID_AUDIO_BITRATE=96000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_LENGTH=53

That is, it has a length of 53 seconds, but when I play it, the real length, 
seems to be 43 seconds.
Look at the last line of it decoding
A:  43.0 V:  43.0 A-V:  0.007 ct:  0.050  1018/1018   5%  4%  0.8% 8 0 0%
So far, it seems just like an error while reporting the length, but the real 
strange things comes wheen seeking...
Seeking in absolute time mode... it seems to seek as if the video as 53 
seconds long... so, if I jump to second 42 I'm nto 1 second away from the 
end, but 11 seconds away from the end, and the dynamic output shows this fact 
telling that it is playing seconds 34 or 35.
So, there's an offset between the reported time with -identify and the real 
time and there's the same offset with the seek time and the real time... now, 
this offset seems to get bigger as times goes on... linealy, so, I would say 
there's a converstion factor... if I jump to second 53, it goes to 43, if I 
jump to 26.5 (53/2), it goes to 21.5 (43/2) and so on... That's why I say, it 
seems like a scaling problem, there are two scales, the real on, reported in 
the dynamic output (time and frames) and another one, used for seeking and 
reporting on -identify. Now this doesn't happen with only one video... it 
happens with all the videos I tested, BUT, all of the reported diferent 
factors, maybe the factor depends on the length of the video, I'm not sure 
about this, but the wrong scale was always bigger than the real one.
I hope this report was useful for you, but I have to solve the problem in my 
application... to do that, all I need is to get the real number of frames the 
video has... is that posible ?
Thank you very much.
- -- 
Pupeno: pupeno at pupeno.com
http://www.pupeno.com
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