[FFmpeg-devel] [PATCH] avutil/hwcontext_cuda: fix YUV420P cuda_get_buffer

[Timo Rothenpieler]

On 15.05.2018 13:37, Marton Balint wrote:
>> Are you sure it isn't already that way? I tested specially YUV420P and
>> could not make out any issues.
> 
> For 4K content linesize[0] is 3840, but linesize[1] becomes 2048 instead
> of 1920.

That's odd, 2048 seems more correct since it's a multiple of the
recommended 2048. But I guess the whole yuv420p in nvenc is some weird
hack on the driver side.

>>
>> So something like
>>
>> frame->linesize[1] = frame->linesize[2] = frame->linesize[0] / 2;
>> frame->data[2]     = frame->data[1];
>> frame->data[1]     = frame->data[2] + frame->linesize[2] * ctx->height
>> / 2;
> 
> Ok, will use this.

Feel free to push if it works. Don't have access to an nvidia machine
right now, so can't properly test.

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