Yes, it is possible. However, note that webm on safari will require transcoding vp8/vp9 into h.264. This is much more compute intensive than just transmuxing a

Yes, it is possible. However, note that webm on safari will require transcoding vp8/vp9 into h.264. This is much more compute intensive than just transmuxing a flv (which has to be in h.264/aac) into another container (in this case fragmented mp4). Here is an example of playing HEVC with this method: https://strukturag.github.io/libde265.js/ https://strukturag.github.io/libde265.js/