[FFmpeg-devel] [PATCH 2/2] ffv1dec: Ensure that pixel format constraints are respected

Hendrik Leppkes h.leppkes at gmail.com
Wed Jul 18 00:58:06 EEST 2018


On Tue, Jul 17, 2018 at 11:54 PM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>
> 2018-07-17 21:39 GMT+02:00, Vittorio Giovara <vittorio.giovara at gmail.com>:
> > YUV410P requires that sizes are divisible by 4.
>
> Do you mean that AV_PIX_FMT_YUV410P requires it?
> Where is this documented?
>

Its a consequence of the subsampling factor. 4:1:0 is one-fourth the
horizontal resolution and half the vertical resolution, as such the
width has to be a multiple of 4 for that to result in a valid chroma
dimension.

- Hendrik


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