[FFmpeg-user] meet a question for inspecting a wmv file

921353606@qq 921353606 at qq.com
Fri May 24 11:43:19 CEST 2013


From: Carl Eugen Hoyos
Date: 2013-05-16 16:54
To: ffmpeg-user
Subject: Re: [FFmpeg-user] meet a question for inspecting a wmv file
>921353606 <at> qq <921353606 <at> qq.com> writes:

>> > >>Which player / codec supports this file?
>> > >
> >> >I only know it was supported by window media player.
> >
> >>Doesn't work here.
>> 
>> It can be played by Windows Media Player 11.0.5721.5262 
>> on Windows XP Professional Service Pack 3.

>Does not work here.

>If you can find out which codec you installed that allows 
>playback, we would at least have a name for the ticket I 
>would open.

>Carl Eugen

>I tried it again with mencoder.exe to find some clue. It was failed and the ouput was:
>E:\tools\mplayer>mencoder.exe  e:\video\yj_Screen.wmv -oac mp3lame -lameopts preset=64 -ovc xvid -xvidencopts bitrate=600 -of avi -o m7.avi
>MEncoder Redxii-SVN-r36265-4.6.3 (C) 2000-2013 MPlayer Team
>Custom build by Redxii, http://smplayer.sourceforge.net
>Compiled against FFmpeg version N-52985-gcbcc5cb
>Build date: Sat May 11 23:43:58 EDT 2013

>success: format: 0  data: 0x0 - 0x89cd52
>libavformat version 55.7.100 (internal)
>ASF file format detected.
>[asfheader] Video stream found, -vid 2
>VIDEO:  [EJQV]  1024x768  24bpp  1000.000 fps  232.1 kbps (28.3 kbyte/s)
>[V] filefmt:6  fourcc:0x56514A45  size:1024x768  fps:1000.000  ftime:=0.0010
>xvid: using library version 1.3.2 (build xvid-1.3.2)
>Opening video filter: [expand osd=1]
>Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
>Cannot find codec matching selected -vo and video format 0x56514A45.
==========================================================================

>Exiting...

Now I am sure the video can be played in windows media player because I installed an application of a third party.
The application supports an especial codec which can be used by windows media player.
Can FFmpeg work with the dll of the especial codec if I find it,
Or I have to get the sourcecode of the codec and complile it with FFmpeg?
Please give me an idea and thanks a lot for any help.


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