Export parameters [other tab]

What are these parameters for exactly and what are my choices?

vpre=medium
preset=medium
frame_rate_den=1000000

vpre is legacy and can be ignored.

preset is an option of a few codecs such as libx264 and libx265 that sets a number of their parameters to a predefined collection (preset) where medium means medium speed and good quality.

frame_rate_den means frame rate denominator; there should be a frame_rate_num as well.

You would need to read the following to understand everything possible:

https://www.mltframework.org/plugins/ConsumerAvformat/
http://ffmpeg.org/ffmpeg-all.html

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