Fix EXT output in format switching

vaclavrequested to merge
float-1566-ext-output-in-format-switching into main
  • Related issues: #1566
  • Requested reviewers:

Reason why this change is needed

  • The format switching with EXT output crashes.

Description of the change

  • Fix format switching with EXT output:
    • set correct number of output audio channels
    • open metadata output files

Affected operating points

  • All is BE except of format switching and EXT output.

Related to #1566

Merge request reports