Opened 2 hours ago
Last modified 2 hours ago
#11310 new defect
[bsf filter] Cannot copy eac3_core
| Reported by: | microchip | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avcodec |
| Version: | git-master | Keywords: | eac3 Atmos bsf audio |
| Cc: | microchip | Blocked By: | |
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
Summary of the bug: Using -c:a copy -bsf:a eac3_core on a DD+ + Atmos audio or video file does not strip the Atmos part
How to reproduce:
% ffmpeg -i input -vn -c:a copy -bsf:a eac3_core output.eac3 ffmpeg version N-117812-gbbb0fdedb7 built on 17 november 2024 % ffprobe -i output.eac3 -v quiet -select_streams -show_entries stream=profile "Dolby Digital Plus + Dolby Atmos"
I can confirm that mediainfo also reports it as DD+ + Atmos
Attachments (1)
Change History (3)
by , 2 hours ago
| Attachment: | ddplus_with_atmos.eac3 added |
|---|
comment:1 by , 2 hours ago
comment:2 by , 2 hours ago
OK, so I have a remux of a bluray movie (speak no evil, 2024) that has a stream reported as "DD+ with Atmos". You're sying that I can't strip the Atmos part and just get the E-AC-3 with the bsf filter?
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That is not the function of the eac3_core filter. Its supposed to be used on Blu-ray style EAC3 streams that contain two streams, either ac3+eac3 or eac3+eac3, one core, and one extension stream.
It will extract only the core stream from such a setup. It does not interact with Atmos.