ffmpeg live transcoding faster alternative?
Question
Is there any opensource alternative to ffmpeg
and VLC
to live video transcoding from HTTP streaming to RTMP or other?
ffmpeg
caused my CPU (AMD 4.0GHZ 8Core) is loaded 100% with only 8 SD streams.
Thanks for help.
PS. I think I don't need to transcode my video, I can also stream with something like http video proxy. Source is in HTTP streaming format, also I am under Linux.
Solution
Your question should be: "Is there any opensource alternative faster than ffmpeg".
And the answer is No.
If you dont need to transcode, add -acodec copy -vcodec copy
to your command line
OTHER TIPS
ffmpeg
is flexible encoder you can tweak it much you like , it's up to encoding algorithm and Size VS Quality battle , I think now days X264 are more efficacy than it was before , the important tweaks with ffmpeg to speedup encoding is -preset
the default is medium
you can use fast
or faster
and watch the quality of your output video . I have live steaming video and I use this command
ffmpeg -loglevel 0 -thread_queue_size 32768 -re -i "http://sorce" -vcodec libx264 -preset fast -break_non_keyframes 1 -profile:v high444 -x264-params "nal-hrd=cbr" -b:v 260k -acodec aac -b:a 32k -map_metadata -1 -s 480x360 -f flv rtmp://localhost/hls/live
That for very low quality video ,
ffmpeg -loglevel 0 -thread_queue_size 32768 -re -i "http://source" -vcodec libx264 -preset fast -break_non_keyframes 1 -b:v 665k -profile:v high444 -x264-params "nal-hrd=cbr" -acodec aac -b:a 32k -map_metadata -1 -s 854x480 -f flv rtmp://localhost/hls/live
you will get better quality and viewable picture when increase -b:v
value .
so it's up to you preferred network you can get much higher video quality with less CPU usage.