Gap (delay) between loops in 'loop' FX

[ArztKlein]

I'd like to request an argument with the audio_loop function which is a gap duration - a gap of time with no audio between the loops.
https://zulko.github.io/moviepy/ref/audiofx/moviepy.audio.fx.all.audio_loop.html

[tburrows13]

It's a good idea. Probably worth noting that I was thinking that we could probably get rid of audio_loop entirely in favour of the existing loop (which should work for both video and audio) because whilst the implementation is quite different, the end result is the same. Presumably the 'gap' could also work in the video version of loop and just have a blank (or transparent) screen for the gap duration.

[DJ73]

I would like to try this out. Although, if there is a common loop option for audio and video, then the function should have a different file structure. I think audio_loop should ideally return just the audio, without the video and similarly, video_loop could return the video without audio. A common loop function can probably have options to retain audio or video such that it calls the other two for further processing

[tburrows13]

I'd like to keep the current loop as it is, as it follows a standard set out by other effects in video.fx (such as e.g. time_mirror), that is, have it always apply to video, audio and mask, if available. In the rare case where the user wishes to apply it only to the audio of a video, then they can simply do clip.audio = clip.audio.loop(...). Similar solutions can be done to any variation that you can think of.

Before you add the gap parameter, I'd recommend that you do #1368 first :)

[tburrows13]

audio_loop is now gone in #1451, so we just have loop that works on audio and video. Anyone is still welcome to implement a gap parameter to it.