Bug 6766

Summary:	EAC3 can't be decoded
Product:	Fedora	Reporter:	David Santamaría Rogado <howl.nsp>
Component:	gstreamer1-libav	Assignee:	Rex Dieter <rdieter>
Status:	RESOLVED INVALID
Severity:	normal	CC:	hans, leigh123linux, mike
Priority:	P1
Version:	f38
Hardware:	x86_64
OS:	GNU/Linux
namespace:

Description David Santamaría Rogado 2023-09-24 01:04:36 CEST

I have installed ffmpeg in the new way there is for 38 substituting ffmpeg-free with ffmpeg.

ffmpeg -decoders |grep eac3 shows A....D eac3                 ATSC A/52B (AC-3, E-AC-3)

But, totem complains with the need to install a codec for E-AC-3 and trying to install shows in software an installed gstreamer codecs.

I suppose the problem is in gstreamer1-libav, despite being installed is not used or, it doesn't support eac3 with ffmpeg.

Comment 1 leigh scott 2023-09-24 02:35:12 CEST

gstreamer1-libav is provided by fedora repo so report it to redhat bugzilla.
Did you install rpmfusion ffmpeg full?

https://rpmfusion.org/Howto/Multimedia?highlight=%28%5CbCategoryHowto%5Cb%29

Comment 2 leigh scott 2023-09-24 02:40:17 CEST

https://koji.fedoraproject.org/koji/packageinfo?packageID=36044

Comment 3 leigh scott 2023-09-24 08:28:37 CEST

(In reply to David Santamaría Rogado from comment #0)
 
> I suppose the problem is in gstreamer1-libav, despite being installed is not
> used or, it doesn't support eac3 with ffmpeg.


Looks fine to me, maybe totem is to blame

$ gst-inspect-1.0 |grep -i eac
libav:  avdec_adpcm_ima_ea_eacs: libav ADPCM IMA Electronic Arts EACS decoder
libav:  avdec_eac3: libav ATSC A/52B (AC-3, E-AC-3) decoder
libav:  avdec_eacmv: libav Electronic Arts CMV video decoder
libav:  avenc_eac3: libav ATSC A/52 E-AC-3 encoder
typefindfunctions: audio/x-ac3: ac3, eac3

Comment 4 David Santamaría Rogado 2023-09-28 03:17:32 CEST

$ gst-inspect-1.0 |grep -i eac
libav:  avdec_adpcm_ima_ea_eacs: libav ADPCM IMA Electronic Arts EACS decoder
libav:  avdec_eacmv: libav Electronic Arts CMV video decoder
typefindfunctions: audio/x-ac3: ac3, eac3

$ sudo dnf list ffmpeg*
Paquetes instalados
ffmpeg.x86_64                                                     6.0-11.fc38                                                          @rpmfusion-free-updates
ffmpeg-libs.x86_64                                                6.0-11.fc38                                                          @rpmfusion-free-updates

Fresh Fedora 38 installation.

Is needed any other package for eac3?

Comment 5 David Santamaría Rogado 2023-09-28 03:22:24 CEST

$ ffmpeg -decoders | grep -i eac3
 A....D eac3                 ATSC A/52B (AC-3, E-AC-3)

Comment 6 David Santamaría Rogado 2023-09-28 04:00:55 CEST

Sorry for triple commenting but found the issue, is not in RPMFusion but just if someone found this bug could get a solution.

https://gstreamer-devel.narkive.com/W9nWxCEt/gst-devel-how-to-update-gstreamer-registry is a 13 years old conversation in the gstreamer mailing list but following it made gstreamer to detect eac3 in my situation.

$ rm ~/.cache/gstreamer-1.0/registry.x86_64.bin

now try inspect to make gstreamer rebuild registry

$ gst-inspect-1.0 | grep -i eac
libav:  avdec_adpcm_ima_ea_eacs: libav ADPCM IMA Electronic Arts EACS decoder
libav:  avdec_eac3: libav ATSC A/52B (AC-3, E-AC-3) decoder
libav:  avdec_eacmv: libav Electronic Arts CMV video decoder
libav:  avenc_eac3: libav ATSC A/52 E-AC-3 encoder
typefindfunctions: audio/x-ac3: ac3, eac3

gstreamer should rebuild it automatically when new codecs are installed but somehow it didn't. Perhaps because gstreamer1-libav was installed already and it doesn't take into account that more codecs are available in ffmpeg/libav.