Opened 11 years ago

Closed 11 years ago

#7452 closed defect (duplicate)

mythfrontend unable to extract the DTS core or ac3 core from DTS-HD or TRUE-HD

Reported by: seabass Owned by: JYA
Priority: minor Milestone: unknown
Component: MythTV - Audio Output Version: 0.22rc1
Severity: medium Keywords: true-hd dts-hd dts
Cc: Ticket locked: no


using mythtv 0.22-fixes, latest trunk. frontend with AC3 / DTS passthrough enabled.

File contains DTS-HD soundtrack.

Behaviour expected : Playback DTS core of the file sent via passthrough and audio coming out of the system.

Actual behaviour : No sound at all coming out of the speakers.

Change History (4)

comment:1 Changed 11 years ago by tralph11@…

seabass: For your DTS-HD audio problem please test the patch attached to ticket #7409 and report back. AFAIK, TrueHD doesn't have an AC-3 core so is not backwards compatible with AC-3 decoders.

comment:2 Changed 11 years ago by robertm

tralph is correct, TrueHD is Meridian Lossless Packing, not AC-3. In some Blu-ray this is muxed into the same pid as TrueHD but they are discrete. Also, ffmpeg still does not demux those PIDs properly so neither do we.

comment:3 Changed 11 years ago by seabass

the patch makes it work correctly, thank you for pointing that out

comment:4 Changed 11 years ago by sphery

Resolution: duplicate
Status: newclosed

Dup of #7409 and/or #7410. Thanks for the quick response.

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