[FFmpeg-user] x264 multiple 16

belcampo belcampo at zonnet.nl
Thu Mar 17 11:34:12 CET 2011


On 03/17/11 04:43, James Li wrote:
> On Wed, Mar 9, 2011 at 7:49 PM, James Darnley<james.darnley at gmail.com>wrote:
>
>> On 09/03/2011, cozzn<phil at cozzn.be>  wrote:
>>> Hi FFmpeg users
>>>
>>> Is it still required in ffmpeg 0.6 for width and height of output file to
>> be
>>> a multiple of 16? Ffmpeg (in fact x264) used to warn of quality
>> degradation
>>> if this was not the case. Is this warning simply removed or is the
>>> requirement removed?
>>
>> It was never a requirement.  The message was removed to stop scaring
>> people like this.
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>>
>
> I happen to have a similiar problem.
> Can someone help me understand why ffmpeg have this limitation? Any existing
> thread explains this issue?
> Is there a workaround if I do have to convert an video with odd number
> resolution to h264 codec?
AFAIK, it's not a limitation. You can choose every # you want, but it's 
not optimal in the sense of compression results. It works and always has.
>
> Thanks
>
> James
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