Use of edit lists in timed text tracks in MP4

Hi all,

During the last group meeting, I explained that MPEG is working on
clarifying the use of edit lists for timed text tracks in MP4. I created a
GitHub issue against MPEG's repo that highlights the problem and proposes a
recommendation: https://github.com/MPEGGroup/FileFormat/issues/40. Feel
free to participate.

Cyril