Mute a part of video and add new audio to video

Mute a part of video and add new audio to video

I was testing this library

these are the various scenarios we are testing

1. Mute a part of video, For example We have a video of 1 minute, we want to mute from 20th sec. to 40th sec. keeping rest of the audio. i.e from 0 sec. to 20 and from 41 sec to 60 sec

2. for another video of 2 minutes long we want to add new audio to the original video removing original audio or keeping original audio overlaying new audio over it(both are different scenario)

3. can we keep original video and revrse audio

how can we do this.

Please create documentation for the different use cases which are present in the demo app and other uses.

Review the demo app and its existing use cases first, then identify where documentation for the library is maintained. Document the requested video and audio scenarios, including muting a segment, replacing or overlaying audio, and reversing audio, with examples grounded in the available demo behavior.

Written by the indexing model from the issue text.