(ffmpeg-utils)2.6. Syntax | Ratio¶
Official documentation says:
A ratio can be expressed as an expression, or in the form
Note that a ratio with infinite
(1/0)or negative value is considered valid, so you should check on the returned value if you want to exclude those values.
The undefined value can be expressed using the
I think it’s not commonly used in other modern programming languages, it’s not natural as a mathematical notation, and as you can see, it’s a very annoying format that requires more escaping than necessary:
[me@host: ~]$ # Specifying with fractional: [me@host: ~]$ ffmpeg -y -i video.mkv -vf 'framerate=30000/1001' out.mkv [me@host: ~]$ # The following will have the same result..., but...are you happy with this? [me@host: ~]$ ffmpeg -y -i video.mkv -vf 'framerate=30000\\:1001' out.mkv
Therefore, I have no idea how good this is.