[FFmpeg-devel] [PATCH 3/3][RFC] avfilter/vf_chromakey: Add OpenCL acceleration

highgod0401 highgod0401 at gmail.com
Sat Oct 10 03:34:56 CEST 2015

From: Timo Rothenpieler
Date: 2015-10-09 16:41
To: FFmpeg development discussions and patches
CC: highgod0401
Subject: Re: [FFmpeg-devel] [PATCH 3/3][RFC] avfilter/vf_chromakey: Add OpenCL acceleration
> Using this sample: https://btbn.de/files/chromakey_sample.mp4
> ffmpeg -f lavfi -i color=c=black:s=1280x720 -i chromakey_sample.mp4 -an
> -c:v libx264 -preset veryfast -crf 18 -shortest -filter_complex
> "[1:v]chromakey=0x70de77:0.1:0.2:0:1[ckout];[0:v][ckout]overlay[out]"
> -map "[out]" -y output.mkv
> The last parameter to the chromakey filter enables opencl acceleration.
> Hi,
> Could you please send the patch as attachments? I merge the code, but some compile errors occur.
> Thanks
> Best regards

You can pull from my github, the patches are in the chromakey branch:


If you want just the chromakey patch itself:


OK, I will test as soon as possible

Best regards

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