[FFmpeg-devel] [PATCH] (for discussion): nvenc: fix wrong aspect ratio for 720x576 and 720x480 resolution

Timo Rothenpieler timo at rothenpieler.org
Sun Feb 12 23:31:13 EET 2017


On 2/12/2017 10:25 PM, Miroslav SlugeĊˆ wrote:
> This patch is for discussion only, not ready to commit yet and maybe
> newer will be.
> 
> NVENC in current CUDA 8 SDK is setting wrong aspect ratio when encoding
> resolution 720x576 and 720x480 and using AR 4:3 or 16:9 it will encode
> to h264 header that 15:11 and 20:11 is used. This is very very very ugly
> way how to fix it. I hope someone in NVIDIA will fix this soon, because
> all encoded streams are not displayed correctly for example in videojs
> player.

nvenc.c had some compensation for this, which was somewhat recently
removed, because nvidia fixed something regarding it:

http://git.videolan.org/?p=ffmpeg.git;a=commit;h=829db8effd76b579ae9aca5ee8f85d3ade6af253


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