[MPlayer-dev-eng] [PATCH] automatic fps for mpeg4 raw/in TS
Nico Sabbi
nsabbi at tiscali.it
Thu Jan 6 22:35:52 CET 2005
Nico Sabbi wrote:
> Michael Niedermayer wrote:
>
>> Hi
>>
>> On Wednesday 05 January 2005 23:12, Nico Sabbi wrote:
>>
>>
>>> Michael Niedermayer wrote:
>>>
>>>
>>>> Hi
>>>>
>>>> On Wednesday 05 January 2005 22:09, Nico Sabbi wrote:
>>>>
>>>>
>>>>> Hi,
>>>>> this patch permits to determine automatically the initial fps of
>>>>> mpeg4
>>>>> video in the VOL header,
>>>>> so there's no need to specify it with -fps.
>>>>>
>>>>> Michael, can you please check it?
>>>>>
>>>>
>>>> did u try it with a few different framerates like a 24000/1001 .m4v
>>>> stream
>>>> generated by ffmpeg? i doubt it will work
>>>>
>>>> [...]
>>>>
>>>
>>> I checked some fancy fps but not the fractional ones; now I see they
>>> aren't recognized
>>> correctly.
>>> If I understand correctly the specs the fixed_timeinc is given by the
>>> smallest
>>> number of bits (up to 16) to represent timeinc_resolution-1,
>>> correct ?
>>>
>>
>>
>> IIRC, yes
>>
>>
>>
>>
>>> What's wrong? :)
>>>
>>
>>
>> many mpeg4 files have no fixed_timeinc
>> [...]
>>
>>
>
> This one works correctly with all fps I tried, both with lavc and with
> xvid, in raw files and in TS.
> Is it ok ?
>
> Nico
sorry, this doesn't work with b-frames :(
next time ...
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