Philip Langdale <philipl <at> overt.org> writes: > > On Wed, 25 Mar 2015 21:52:54 +0000 (UTC) > Ali KIZIL <alikizil <at> gmail.com> wrote: > > > > > The update broken the general usage: > > > > ./ffmpeg -loglevel info -re -i /root/bunny.mp4 -vcodec nvenc -preset > > hp -fflags +genpts -vb 24000k -minrate 24000k -maxrate 24000k > > -bufsize 48000k -muxrate 26000k -cbr 1 -2pass 0 -r 50 -g 100 - pix_fmt > > yuv420p - acodec aac -strict -2 -ac 2 -ar 48000 -ab 256k > > -flush_packets 0 - packetsize 188 -y -f mpegts out.ts > > > > ./ffmpeg -loglevel info -re -i /root/bunny.mp4 -vcodec nvenc_h265 - > > preset hp -fflags +genpts -vb 24000k -minrate 24000k -maxrate 24000k - > > bufsize 48000k -muxrate 26000k -cbr 1 -2pass 0 -r 50 -g 100 -pix_fmt > > yuv420p -acodec aac -strict -2 -ac 2 -ar 48000 -ab 256k > > -flush_packets 0 -packetsize 188 -y -f mpegts out.ts > > > > FFmpeg stucks, does not work for both. > > > > Before with nvenc work working fine with above commands. It looks > > like - g parameter, -muxrate, -flush_packtes stuck FFmpeg with this > > update. > > > > Below line works: > > > > ./ffmpeg -loglevel verbose -i /root/bunny.mp4 -vcodec nvenc_h265 > > -preset hp -r 50 -y -f mpegts out.ts > > Yes - it's because I tried to share the class instance between the two > encoders, which doesn't work. I'm about to push a fix. Thanks for the > heads up. > > --phil >
It works fine now Phil. One more comment: I have a GTX 980. It can encode upto 30-33 fps for 4K 60fps YUV Raw input file using nvenc_h265 avcodec with FFmpeg. First a side, It looked to me like lack of performance of card. However; after I split the video with crop filter into 2: /opt/ffmpeghw/bin/ffmpeg -video_size 3840x2160 -framerate 50 -i /Projects/YUV/soccer.yuv -vcodec nvenc_h265 -an -filter:v "crop=in_w:in_h/2:0:0" -r 50 -g 50 -preset hp -f hevc top.hevc /opt/ffmpeghw/bin/ffmpeg -video_size 3840x2160 -framerate 50 -i /Projects/YUV/soccer.yuv -vcodec nvenc_h265 -an -filter:v "crop=in_w:in_h/2:0:in_h/2" -r 50 -g 50 -preset hp -f hevc bottom.hevc When I run them at the same time, both can be encoded with 50 fps. I tried to joing output files with padding but FFmpeg needs re-encoding and it makes no sense. Do you have any comment or idea to use full performance of the card over a single ffmpeg nvenc_h265 instance ? Additional note: GTX cards can suport up to 2 HEVC encoding at the same time (as limitation.). _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
