Clarification on removeSourceBuffer

[estobbart]

3.8 removeSourceBuffer() method

2.1 Abort the buffer append algorithm if it is running.

Should this also abort the range removal algorithm?

Note that explicity calling abort during a range removal causes an invalid state error, but it's unclear if removeFromSourceBuffer can be called before a range removal is complete.

[chrisn]

There may be multiple issues here:

• The spec doesn't say that the buffer append algorithm is run in parallel
• If the buffer append algorithm does run in parallel, and it's aborted, could the SourceBuffer end up in inconsistent internal state?
• The inconsistency between buffer append and range removal, as you noted

[chrisn]

Media WG meeting 10/3/2026:

• Add abort range removal after step 2.1.
• Step 5 of appendBuffer() says it runs asynchronously
• Step 11 of removeSourceBuffer() is to destroy all resources for sourceBuffer, so no inconsistent state.