Encoding a webm Video to Serve with Media Source Extension

Scratch notes for encoding a webm video for use in Media Source Extension playback.

Key article:

https://axel.isouard.fr/blog/2016/05/24/streaming-webm-video-over-html5-with-media-source

NOTE: I removed -dash 1. I was starting with a .webm which may have had something to do with that?

https://go.dev/doc/tutorial/getting-started

https://groups.google.com/a/webmproject.org/g/webm-discuss/c/YmVMRRjSKjU

https://groups.google.com/a/webmproject.org/g/webm-discuss/c/6ySds58ZhEQ

Remuxer tool:

https://github.com/acolwell/mse-tools/tree/master

https://github.com/acolwell/mse-tools/tree/master/mse_webm_remuxer

https://github.com/acolwell/mse-tools/blob/master/mse_webm_remuxer/mse_webm_remuxer.go

https://w3c.github.io/mse-byte-stream-format-webm/

https://www.w3.org/TR/media-source-2/

https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API

https://github.com/Vanilagy/mediabunny

https://ffmpeg.org/ffmpeg-formats.html

https://ffmpeg.org/ffmpeg-formats.html#toc-dash-2

https://ffmpeg.org/ffmpeg-utils.html

https://ffmpeg.org/ffmpeg-codecs.html

https://github.com/webmproject/libwebm

https://www.webmproject.org/tools/

https://www.webmproject.org/

https://w3c.github.io/mse-byte-stream-format-webm/#webm-init-segments

https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement

https://developer.mozilla.org/en-US/docs/Web/API/HTMLVideoElement

https://developer.mozilla.org/en-US/docs/Web/API/MediaSource

https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer

https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer

Original script that worked:

#!/bin/bash

ffmpeg -y -i input.webm \
  -vf "scale=300:-2" \
  -c:v libvpx-vp9 -b:v 8000k -tile-columns 4 \
  -frame-parallel 1 -keyint_min 90 -g 90 -f webm  \
  -c:a libopus \
  -b:a 64K \
  output/resized.webm

./remux output/resized.webm output/remuxed.webm

cd output
split -b 1M -d -a 10 remuxed.webm segment-