WebM: Add cue points inside the initialization segment

[aisouard]

ffmpeg never puts cue points inside the webm's initialization segment, thus these are mandatory for Media Source Extensions API to play the video properly.

There are some tools which can fix the webm files right after the encoding process, such as mse_webm_remuxer and sample_muxer.

We should write our own muxer into Javascript so we don't have to ask the user to fix their webm file themselves, then add the cue points automatically inside the initialization segment section of the metadata file.

[aisouard]

I've just encoded a webm video with ffmpeg and forgot to run sample_muxer, the metadata file generation went well and it plays inside the browser.

I'll reopen the issue if sample_muxer begins to be required again.

[aisouard]

False alarm, the player was acting funny.

[Hakim32]

i fllowed your blog https://axel.isouard.fr/blog/2016/05/24/streaming-webm-video-over-html5-with-media-source and i need way to create Initialization Segment , on the server side . i installed ffmpeg , can you help me get the segments from webm file , thans

[aisouard]

Sure, I suggest you to check out this file, everything you need is there: https://github.com/peeracle/peeracle/blob/dev/src/webmMedia.js

I haven't worked on this since a long time by the way, I'm afraid I can't help you much more on this matter.