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EAC3-JOC MIME type should not be taken as EAC3 on Pixel Device#3257

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ybai001 wants to merge 1 commit into
androidx:mainfrom
DolbyLaboratories:dlb/ddp-fallback/dev
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EAC3-JOC MIME type should not be taken as EAC3 on Pixel Device#3257
ybai001 wants to merge 1 commit into
androidx:mainfrom
DolbyLaboratories:dlb/ddp-fallback/dev

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@ybai001

@ybai001 ybai001 commented Jun 3, 2026

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Pixel devices integrate an EAC3 decoder, but it does not support EAC3-JOC stream decoding. If there is a manifest file includes one AAC 2.0 track and one EAC3-JOC track.

  • Without this PR, EAC3-JOC track is selected since channel count DD+JOC > AAC. Then playback failed.
  • With this PR, AAC is the only MIME type that DUT can support so that AAC track is selected. Playback is OK.

Note: Pixel devices integrate EAC3 decoder but cannot handle EAC3-JOC stream. -- This is a product decision rather than technical limitation.

Pixel devices integrate an EAC3 decoder, but it does not support EAC3-JOC stream decoding.
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