#1604: Rtmp streaming fps continually drops -------------------------------------+------------------------------------- Reporter: Pyriel0 | Owner: Type: defect | Status: new Priority: normal | Component: Version: git-master | undetermined Keywords: rtmp | Resolution: Blocking: | Blocked By: Analyzed by developer: 0 | Reproduced by developer: 0 -------------------------------------+-------------------------------------
Comment (by Pyriel0): The command line I used for what is pasted is at the very top. Here are some examples. I used this command line to record to the hard drive first and it works fine. Then I changed the output from f:\testing.mp4 to -f flv "rtmp ://live-dfw.justin.tv/app/xxxxxx". {{{ ffmpeg -re -y -rtbufsize 100000k -f dshow -i video="SCFH DSF":audio="Line 1 (Virtual Audio Cable)" -pix_fmt yuv420p -s hd720 -vcodec libx264 -preset medium -maxrate 2400k -bufsize 600k -acodec libmp3lame -ac 2 -b:a 128k f:\testing.mp4 }}} I used the 32 bit 7-30-2012 zeranoe version. Forgot the 32 bit does not pick up virtual audio cable so the first 3 examples do not have audio. For the last video "2400k test 3 audio", I changed the audio to "virtual- audio-capturer" so there would be sound. 2400kb test 1 and 2 are the same, I only ran it again because I forgot how low the fps went on the first run. http://www.twitch.tv/pyriel0/videos 2400k tests were done using the bitrates in the commnad line. 1500k used 1500k maxrate and 500k buffer. The 1500k streaming held 30 fps. 2400k dropped down to 12 fps. The audio remains stable in the final 2400kb test when the video is choppy. I doubt there is a latency problem since the audio does not get messed up. System ram usage: Game only: ~3.5 GB Recording to hard drive: ~3.8 GB Streaming 1500k: ~4 GB Streaming 2400kb: ~5 GB I can only use the 32 bit version for these tests because the 64 bit uses all available ram which causes everything to stutter. -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1604#comment:9> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://avcodec.org/mailman/listinfo/ffmpeg-trac