Hi, I am trying to split vmaf calculation work across multiple threads by logically dividing the video ( not literally )
I tried following 2 commands to do vmaf on a 20.08 sec ( 477 frames ) video *For 1st 10 second: * *ffmpeg -i transcodedA.mp4 -i sourceA.mxf -filter_complex "[0:v][1:v]scale2ref=flags=bicubic[encoded][source];[source]format=pix_fmts=yuv420p,trim=start=0,trim=end=10,setpts=PTS-STARTPTS[source2];[encoded]trim=start=0,trim=end=10,setpts=PTS-STARTPTS[encoded1];[encoded1][source2]libvmaf=feature='name=psnr|name=float_ssim|name=float_ms_ssim':n_threads=4:log_fmt=json:log_path=A0-10.json" -f null -* *For remaining part of video:* *ffmpeg -i transcodedA.mp4 -i sourceA.mxf -filter_complex "[0:v][1:v]scale2ref=flags=bicubic[encoded][source];[source]format=pix_fmts=yuv420p,trim=start=10,setpts=PTS-STARTPTS[source2];[encoded]trim=start=10,setpts=PTS-STARTPTS[encoded1];[encoded1][source2]libvmaf=feature='name=psnr|name=float_ssim|name=float_ms_ssim':n_threads=4:log_fmt=json:log_path=A10-20.json" -f null -* But in both output files, collectively I get only 465 frames, that means 13 frames missing. What can I do that ensure no frame is missed? Regards, Tarun Singhal _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
