[FFmpeg-devel] [PATCH] Fixing scale2ref filter in case if reference frame is hw frame

[Alex]

This path fixing scale2ref filter if reference frame is HW frame.Command for add watermark (resize it based on the main/reference video size: [watermark][scaled]scale2ref=oh*mdar:ih*0.5[watermark2][scaled2] ) on video in case of HW pipeline:>./ffmpeg -init_hw_device cuda=cuda -hwaccel cuda -hwaccel_output_format cuda -filter_hw_device cuda -i input -t 60 -filter_complex scale_npp=1920:1080:format=yuv420p[scaled],movie=/media/converter/watermark/watermark_ai.png,format=yuva420p[watermark],[watermark][scaled]scale2ref=oh*mdar:ih*0.5[watermark2][scaled2],[watermark2]hwupload[watermark_hw],[scaled2][watermark_hw]overlay_cuda=x=0:y=0 -c:v h264_nvenc -an -y out.mp4

Command for add watermark on video in case of SW pipeline:>./ffmpeg -i input.mp4 -t 60 -filter_complex scale=1920:1080,format=yuv420p[scaled],movie=/media/converter/watermark/watermark_ai.png,format=yuva420p[watermark],[watermark][scaled]scale2ref=oh*mdar:ih*0.5[watermark2][scaled2],[scaled2][watermark2]overlay=x=0:y=0 -c:v h264 -an -y out.mp4
Signed-off-by: alex_qt <3.14pi at ukr.net>
---
 libavfilter/vf_scale.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)


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