Wrong ffmpeg parameters for bitrate limiting

[joef42]

I think the parameters used for ffmpeg are not doing what they are expected to do. When using crf with h264 an additional -b:v parameter is ignored. According to https://trac.ffmpeg.org/wiki/Encode/H.264#ConstrainedencodingVBVmaximumbitrate for targeting a crf while still limiting the maximum bitrate -maxrate and -bufsize should be used.

Other than that this is a great webapp, exactly what I was looking for 👍 .