By default ffmpeg writes to the socket as soon as new data is available. This leads to traffic bursts which may cause the receiver buffer to overflow or underflow. Example for a 720p @ 2500 kbps CBR MPEG-2 transport stream: ffmpeg -re -i <input> -s 1280x720 -r 24 -c:v libx264 -x264opts nal-hrd=cbr:force-cfr=1 \ -b:v 2300k -minrate 2300k … Continue reading FFmpeg Constant UDP Output
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FFmpeg H.264 Constant Bitrate (CBR) Encoding
Example command using a single-frame VBV: ffmpeg -i <input> -r 25 -c:v libx264 -x264opts nal-hrd=cbr:force-cfr=1 -b:v 2500k -minrate 2500k -maxrate 2500k -bufsize 100k output.ts where: nal-hrd=cbr set the hypothetical reference decoder (HRD) to CBR and pack the bitstream to the specified bitrate force-cfr=1 force constant framerate timestamp generation -b:v the video bitrate -minrate -maxrate same … Continue reading FFmpeg H.264 Constant Bitrate (CBR) Encoding