how to change the ffmpeg buffer for input video

0
votes

How to change this buffer that is still 3M

Current launch command:

ffmpeg -f dshow -i video="screen-capture-recorder" -vcodec libx264 -preset:v ultrafast -filter:v "crop=480:270:0:0" -vf tpad=start_duration=30 -r 30 -g 60 -keyint_min 60 -sc_threshold 0 -b:v 1G -maxrate 2500k -bufsize 1G -rtbufsize 1G -sws_flags lanczos+accurate_rnd -acodec aac -b:a 96k -ar 48000 -ac 2 -f flv rtmp://127.0.0.1/live/test

For our final setup we would like to have 140 seconds of delay added to this stream.

We're setting: -bufsize 1G -rtbufsize 1G -b:v 1G to set all of our buffers to 1G, but it seems that it has a different buffer that I cannot seem to find that is set to around 3M Bufferoverflow

CMD Capture

1
ffmpegbuffer-overflow

1 Answers

1
votes

It is -rtbufsize but it is meant to be applied to an input so it goes before that input.

So, your command would start as ffmpeg -f dshow -rtbufsize 1G -i video="screen-capture-recorder"