PERIOD_FLATTENING_FAILED Error when playing mixed hvc1/hev1 or dvhe/dvh1 periods.

[ghouet]

Have you read the FAQ and checked for duplicate open issues?
Yes

What version of Shaka Player are you using?
Sahak 4.0.0

Can you reproduce the issue with our latest release version?
Yes

Can you reproduce the issue with the latest code from main?
Yes

Are you using the demo app or your own custom app?
Demo

If custom app, can you reproduce the issue using our demo app?
n/a

What browser and OS are you using?
Chrome or Safari.

For embedded devices (smart TVs, etc.), what model and firmware version are you using?
n/a

What are the manifest and license server URIs?
https://storage.googleapis.com/trumantest-public/gh/shaka-bug.mpd

What configuration are you using? What is the output of player.getConfiguration()?
demo page config.

What did you do?
Attempt to play https://storage.googleapis.com/trumantest-public/gh/shaka-bug.mpd.

What did you expect to happen?
The stream should play properly.
It does actually play properly when I edit the mpd to only have dvh/hvc1 periods instead of a mix.

What actually happened?
The console shows the following error:
"Unused stream in period-flattening!"
... codecs: "dvh1.05.01" ....

[joeyparrish]

Thanks @ghouet!