[MEncoder-users] 24000/1001 not recognised as valid framerate for MPEG-2

[belcampo]

John Brown wrote:
> 
> 
> On > Date: Mon, 11 Feb 2008 13:16:36 -0500, Rich Felker wrote:
>> On Mon, Feb 11, 2008 at 05:39:55PM +0000, John Brown wrote:
>>> I am using MEncoder dev-SVN-r25958-3.4.5 on Windows XP.
>>>
>>> According to mplayer -identify, ID_VIDEO_FPS=23.976
>>>
>>> Minimal command line:
>>> $ ./mencoder.exe -nosound -ovc lavc -lavcopts vcodec=mpeg2video -of mpeg
>>> mpegopts tele_src=24000/1001:tele_dest=30000/1001 -o $TMP/test.mpg test.avi
>>>
>>> Result:
>>> videocodec: libavcodec (640x480 fourcc=3267706d [mpg2])
>>> [mpeg2video @ 00BCF300]MPEG1/2 does not support 31001/1293 fps
>>                                                   ^^^^^^^^^^
>>
>> Looks to me like your avi file is not 24000/1001 fps but 31001/1293
>> fps. Probably some broken software generated it. Try -ofps 24000/1001
>> and if it still doesn't work it could be a recent bug introducted into
>> MPlayer..
>>
> 
> I forgot to mention that -ofps 24000/1001 did not work either. No parameter
> that takes a framerate will accept 24000/1001.  24, 30000/1001, and 30
> all work. The only problem is 24000/1001.
> 
>>> MEncoder dev-SVN-r24764-4.2.1-sjlj (executable date-time 
>>> = 2007-10-17) does not have this problem.
>> Sounds like this may be the problem....
> 
> Indeed. 
> 
> That is just the next most recent version that I have.  I first noticed it
> some time ago (maybe a few weeks) but I didn't bother to report it
> because I had an older working copy.
> 
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I don't know if it matters to the result, but your calculator will give:
310010000/1293
239760
240000000/1001
239760