Media Source Extensions - Feature requests and discussion

[dsilhavy]

Description

This discussion thread collects ideas and feature requests for future editions of the Media Source Extensions.

[dsilhavy]

Feedback by Thasso and Daniel:

• API to request buffer capacity to overcome QUOTA_EXCEEDED error. Currently, players need to try and error. Schedule download based on current capacity instead of discarding downloaded content and retry later.
• Box parsing API: A media player should be able to register for specific ISOBMFF boxes and get a notification with the box payload. Potential candidates: EMSG, PRFT, ELST. Avoid mp4 box parsing in JavaScript. Potential implications for low latency streaming with CTE.
• Read the current codec string from the SourceBuffer based on the initialization value or the last value that was provided via changeType()
• Related to MPD insertion / interstitials: Internally, one buffer shall be used. Overwriting/overlapping segments/content in the buffer, shifting segments. As an alternative, have multiple buffers per type.
• In some browsers/platforms, it is not possible to remove buffer and create a new one (on the same MSE object). Check if this is a bug on the platform or if it is intended that way.