Hi, I'm playing around with rav1e and noticed in my first test that only one core is used of the 8 (16 virtual) I have. I tried with and without -threads setting. Since most other codecs behave this way I was expecting it to use as many cores as possible if not constrained by the command line.
I tried: ffmpeg -i prores_hq_1080_24p_varying_motives_80s.mov -c:v librav1e -speed 4 -an prores_hq_1080_24p_varying_motives_80s_rav1e_speed4.mp4 and the same with "-threads 8" after the input file with identical results. Without multithreading this is extremely slow. Other codec like x264, x265, kvazaar multithread fine with the same built. So it's not a general problem with multithreading. Working on OS X Catalina. Thanks for any hints, Robert _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
