Only browsers with SharedArrayBuffer support can use ffmpeg.wasm, you can check HERE for the complete list. You do need to be aware of the need for SharedArrayBuffer support: Update 2022 - the following library is also worth looking at for browser side - I have used it and found it works well and the performance, leveraging web assembly language is noticeably better: If you want to do it server side, in a Javascript based server like node for example, then again there are libraries available - e.g.: You would need to do some testing - video processing is very compute intensive and may not work well for you in the browser. FFmpeg support for MPEG-4 ALS has been improved. This one is the most popular at the moment, I believe: He also implemented a missing feature for the ALS decoder that enables floating-point sample decoding. on the users machine rather than your server, there are a number of projects which provide an ffmpeg wrapper in Javascript.

In order to stream data into a video element, you need to create a MediaSource object, and wait for the sourceopen event to fire.If you want to do the work in the browser, i.e. Finally, when n completes the remaining files are emitted and the stream completed (closed). In order to stream the output, an interval time polls the file system for the transcoded output, emitting the data as events via subscriber.next. These are the top rated real world JavaScript examples of fault extracted from open source.

When run, FFmpeg writes files with an incremental index ( 0.mp4, 1.mp4, …) to the mem file-system. JavaScript fluent-ffmpeg - 30 examples found. The n has a different configuration than the previous example in order to create a segmented output, with suitable transcoder settings. The above code uses the same FFmpeg.wasm setup as previously, writing the file to be transcoded into the memory file system.

Ffmpeg javascript example