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You will need to set minrate:maxrate = avgrate-2.5%:avgrate+2.5% and maxrateavgrate=bufsize with ffmpeg to avoid above case. The ffmpeg options you should do is something like below:
| Code Block |
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ffmpeg -i "/tmp/ck_ffmpeg/2021-09-22_305fde4e/src.mp4" \ . . . -filter:v:0 "scale=iw*sar*min(1920/(iw*sar)\,1080/ih):ih*min(1920/(iw*sar)\,1080/ih), pad=1920:1080:(ow-iw)/2:(oh-ih)/2, format=yuv420p, fps=30" \ -b:v:0 9.5M75M \ -maxrate:v:0 10M \ -minrate:v:0 9M9.5M \ -bufsize:v:0 10M9.75M \ -b:a:0 192k \ -muxdelay 0 \ -muxpreload 0 \ . . . |