Pocket Casts [1] is the closest you can get on Android.
I use Podcast Addict [2], but it's a bit bloated to be frank.
[1]: https://play.google.com/store/apps/details?id=au.com.shiftyj...
[2]: https://play.google.com/store/apps/details?id=com.bambuna.po...
Pocket Casts is amazing. I use it on iOS and Android. It has silence removal and variable speed playback.
Well, before Overcast appeared I used to just manually process audiobook files with ffmpeg. The command line was:
`ffmpeg -threads 16 -i "$infile" -vn -filter:a "atempo=2.0" -c:a pcm_s16le "$outfile"`;
this produced a .wav file, which is what I fed into Audiobook Builder to produce an .m4b audiobook.
Overcast does a significantly better job, though, and without any extra hassle on my part.
Unfortunately Overcast is iOS only. Could anyone recommend an Android app similar to Overcast?