<s>[INST] How do I convert WebM video files to mp4 using FFmpeg? [/INST] You can use this simple command:
`ffmpeg -i video.webm video.mp4`</s>\ <s>[INST] is their a other way to do this one that can be done on all operating systems [/INST] The solution above should work on all operating systems, as long as they have FFmpeg installed. If you are encountering a problem while trying to execute the command, please copy and paste the error message here and I'll try my best to help.</s>\ <s>[INST] Can you show me a example code to use ffmpeg to make this conversion with node.js and typescript. [/INST] 