petzku

### Screenshots While I can't find a way to test this *against* VSFilter, I was told to file an issue, and this seemed like the most appropriate category. ![correctly rendering...

"peek" refers to looking at something quickly, "peak" is what mountains or audio tracks have

Not a huge issue, but the `endtime` parameter in `ln.wave.transform` could accept negative values, which would be interpreted as `line.duration - x`. The same might be useful for `starttime` as...

When gradienting drawings which end in `{\p0}`, the script removes the `{`. This doesn't affect rendering, but is probably unintended. Sample: ```{\an7\pos(0,0)\c&H65D0EB&\p1\blur1}m 702.34 540.33 l 746 488 448 470 508.23...

Fix handling of paths with spaces

1

`os.system` should never be used. Use `subprocess.call` instead, which allows passing arguments separately.

Probably like ten of these exist already but I wanted a lightweight one to use

One such example is if the file contains negative duration lines. In these circumstances, mkvmerge (typically) carries on with the mux, but emits warnings to stderr and exits with the...

For instance, the following: ``warning: font 'Mercurius CT Std Medium' not found on line(s): 6539 6540 6541 6542 6543 6545 6546 6547 6548 6550 [...]`` might print out something like...

Support rotating subtitles along with video

3

### Expected behavior of the wanted feature Somewhat related to #6400, but I believe this is a separate concern. Rotating video currently does not rotate subtitles. This is generally desirable...