Hi, I am trying to see how good h264_amf encoder is. I use ffmpeg to encode a 1080 video on Windows 10 running Ryzen 5 2500U. Two observations:
- The encoded video quality is pretty poor, much worse than x264 with a smaller bitrate. - I got about 70fps with ~70% GPU usage. I was expecting to get better numbers though. As a comparison, on a much slower intel CPU Celeron n3450, using h264_vaapi to encode the same file, I got 30 fps with less than 20% GPU usage. The command I use is: ffmpeg -i transcode-test.mkv -pix_fmt nv12 -c:v h264_amf -profile:v constrained_baseline -rc cqp -qp_i 0 -qp_p 0 -qp_b 0 h264_amf.mkv (looks like the qp parameters don't change anything..) Did I do sth. wrong? _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
