[FFmpeg-devel] [PATCH]v408 decoder and encoder

Paul B Mahol onemda at gmail.com
Tue Jan 31 00:32:42 CET 2012

On 1/30/12, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Paul B Mahol <onemda <at> gmail.com> writes:
>> >> > That is not allowed by the QuickTime specification:
>> >> > ... horiz_align_pixels is 2 ...
>> >>
>> >> And where is that specification?
>> >
>> > http://developer.apple.com/quicktime/icefloe/dispatch019.html#v408
>> IMHO it does not says that width must be even.
>> My understanding is that if width is odd it is padded with zeroes like
>> how it is done with r210.
> Then I probably misunderstood "The width field must be a multiple of
> horiz_align_pixels" - I thought this means that for v408, width must be
> even.

That is for image as stored in memory.

To clarify this, someone should create samples with odd width for all
uncompressed packed yuv formats recently added.

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