Convert file WEBM to MP4

WEBM files are not widely used and you may come across them in multimedia applications, video recordings and audio recordings.

They use VP8, VP9, Vorbis codecs.

They can be decoded with special programs that can be downloaded from the web, but if you need to decode few WEBM files it is advisable to use online decoders.

This is the best decoder that has no time or size limits, it's not very fast but it's free:

WebM to MP4 Converter – 100% Free 

Enjoy your conversions!