ons 2022-09-21 klockan 12:30 +0200 skrev Tomas Härdin: > Tested this locally on some 4k sample files and it achieved 19 fps > with > -lowres 2 on an Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz (4 cores). > I'm > getting access to a better machine to test this on as well.
Ran some tests on a c5n.4xlarge instance, Intel(R) Xeon(R) Platinum 8124M CPU @ 3.00GHz, 16 vCPUs. Test sequence is 273 4k htj2k frames from Disney encoded with OpenJPH version 0.7.3, 20-21 megs each. Tested like so: ./ffmpeg -i ~/samples/htj2k-unwrapped/000000%03d.j2c -f null - Achieved fps with a filled disk cache: -lowres this patch libopenjpegdec 0 9.1 7.0 1 40 27 2 105 92 3 128 157 4 129 164 This is with the default frame-based threading. Not too bad. I suspect the slower performance compared to opj with -lowres >= 3 is due to the way parsing works. This is what's holding up my codeblock-threading patchset's performance as well. I have in mind to compare this with a regular j2k sample on the same machine, but it's taking its sweet time transferring.. /Tomas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
