Opened 14 months ago

Last modified 7 months ago

#10230 reopened enhancement

[Feature request] Dolby Surround/Pro Logic/II decoder

Reported by: audiopreservationist Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description (last modified by audiopreservationist)

There are a lot of old matrix'd movie soundtracks that have never been released in proper multichannel format, and modern AVRs don't support this technology. It would therefore be highly beneficial if ffmpeg could decode them, to ensure they remain playable forever.

I believe ffmpeg can encode DPLII, but not decode it. I don't know much about coding, but I found this thread on DPLII, which may be helpful for implementing the decoder: ​https://stackoverflow.com/questions/23713626/correctly-implementing-dolby-pro-logic-ii/23713627

Change History (6)

comment:1 by audiopreservationist, 14 months ago

Keywords: surround added

comment:2 by audiopreservationist, 14 months ago

Description: modified (diff)

comment:3 by Balling, 14 months ago

Keywords: dolby request dolby surround dolby pro logic dolby pro logic ii decoder removed
Resolution: → duplicate
Status: new → closed

Duplicate of #4175.

in reply to:  3 comment:4 by audiopreservationist, 14 months ago

Replying to Balling:

Duplicate of #4175.

Not duplicate. That ticket is about encoding, this is about decoding.

comment:5 by audiopreservationist, 14 months ago

Resolution: duplicate
Status: closed → reopened

comment:6 by Kerry Shetline, 7 months ago

I would be very interested in seeing this feature too, perhaps with options to decode to 4, 5, or 5.1 channels.

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