![RecordRTC on Twitter: "Ffmpeg-asm.js can be used to convert WAV into ogg or WebM into mp4 (mpeg4). It can even merge WAV/WebM into Mp4: https://t.co/i1xe9b60qb" / Twitter RecordRTC on Twitter: "Ffmpeg-asm.js can be used to convert WAV into ogg or WebM into mp4 (mpeg4). It can even merge WAV/WebM into Mp4: https://t.co/i1xe9b60qb" / Twitter](https://pbs.twimg.com/profile_images/888307005156446208/zGWby4G1_400x400.jpg)
RecordRTC on Twitter: "Ffmpeg-asm.js can be used to convert WAV into ogg or WebM into mp4 (mpeg4). It can even merge WAV/WebM into Mp4: https://t.co/i1xe9b60qb" / Twitter
GitHub - muaz-khan/RecordRTC: RecordRTC is WebRTC JavaScript library for audio/video as well as screen activity recording. It supports Chrome, Firefox, Opera, Android, and Microsoft Edge. Platforms: Linux, Mac and Windows.
![javascript - Screen recording using RecordRTC - Unable to record video sounds playing on screen or through speaker - Stack Overflow javascript - Screen recording using RecordRTC - Unable to record video sounds playing on screen or through speaker - Stack Overflow](https://i.stack.imgur.com/Hn5Zj.png)
javascript - Screen recording using RecordRTC - Unable to record video sounds playing on screen or through speaker - Stack Overflow
after converting webm to mp4 using ffmpeg,video played is total black · Issue #759 · muaz-khan/RecordRTC · GitHub
![iOS 12 Safari recording indicates type video/webm, but is in fact mp4[h.264/aac] · Issue #371 · collab-project/videojs-record · GitHub iOS 12 Safari recording indicates type video/webm, but is in fact mp4[h.264/aac] · Issue #371 · collab-project/videojs-record · GitHub](https://user-images.githubusercontent.com/313354/57559544-315bb500-7337-11e9-9976-0b110e6da704.png)