VLC Media Player and Locoloader are a perfect match. Locoloader generates VLC commands that allow you to easily convert files with VLC Media Player. Here's how it works…
Struggling with conversion? Ask for help.
If you need to stop the conversion automatically, just append the time limit in seconds at the end of the command. For example: --run-time=3600
If you've never heard of VLC and you are worried about whether it is safe to install, don't worry! With a 20-year history, VLC Media Player is the most popular media player and converter in the world. Its development began at the École Centrale Paris and is now covered by the non-profit organization VideoLAN, based in France. Although VLC is one of the best programs available, it is completely free. Consider supporting the people behind this amazing project with a small donation.
VLC official website:
https://www.videolan.org
History and comprehensive description of VLC Media Player:
https://en.wikipedia.org/wiki/VLC_media_player