Trimming Video according to audio length while replacing audio track

Hello Team,

Thank you for the great library. We are tranforming video and trying to replace the audio and its working cool but video is not trimming according to audio length. The video goes sound less after transformation. How can we trim the video according to audio track length while video transcoding.

Start by reproducing the Android transformation that replaces the audio track and compare the input audio and video durations. Review the transcoding path involved in audio replacement, then define and test the expected behavior when the tracks differ in length. Done means the output does not contain a silent video tail after the replacement audio ends.

Written by the indexing model from the issue text.