Hi,
Is there a possibility of adding AC4 audio support to Edison OS mio 4k+ hardware and other models?
There are French UHD channels which are broadcast with AC4 audio on 5w.
Thanks
Audio AC4
Started by demosat1, 07 Jan 2024 10:10
8 replies to this topic
Re: Audio AC4 #2
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Posted 7 January 2024 - 14:37
No, DVB audio (and video) is processed in hardware (not only Edision, every box), so the hardware must support it, and the drivers must enable it.
I've not seen any vendor adding AC4 support.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
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Re: Audio AC4 #3
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Posted 7 January 2024 - 15:15
SES UHD Demo on Astra 19, one track is AC4, I get no sound on my H7
Re: Audio AC4 #4
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Posted 7 January 2024 - 15:20
As @WanWizard said there is no hardware support for AC4 on neither of the boxes currently built.
Vu+DUO4KSE, DM920UHD, Vu+Uno4KSE, SF8008Mini, 2xPulse4K, Vu+Solo2, Dreambox DM500HD, Triax 78 (7E,9E,13E,19.2E,23.5E) & 2xTriax 78 (39E)
Re: Audio AC4 #5
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Posted 9 January 2024 - 18:12
And downmix implementation for this audio format is not possible neither?
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Sat: Hotbird 13.0E, Astra 19.2E, Eutelsat5A 5.0W
VU+ Solo 4K: 2*DVB-S2 + 2*DVB-C/T/T2 (used in DVB-C) & Duo 4K: 2*DVB-S2X + DVB-C (FBC)
AB-Com: PULSe 4K 1*DVB-S2X (+ DVB-C/T/T2)
Edision OS Mio 4K: 1*DVB-S2X + 1*DVB-C/T/T2
Re: Audio AC4 #6
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Posted 9 January 2024 - 18:14
Not with the current code since it doesnt know how to parse that AC4. So for now not possible software decoding either.
Vu+DUO4KSE, DM920UHD, Vu+Uno4KSE, SF8008Mini, 2xPulse4K, Vu+Solo2, Dreambox DM500HD, Triax 78 (7E,9E,13E,19.2E,23.5E) & 2xTriax 78 (39E)
Re: Audio AC4 #7
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Posted 9 January 2024 - 18:35
NO SUPPORT by PM, it is a forum make your question public so everybody can benefit from the question/answer.
If you think that my answer helps you, you can press the up arrow in bottom right of the answer.
Wanna help with OpenPLi Translation? Please read our Wiki Information for translators
Sat: Hotbird 13.0E, Astra 19.2E, Eutelsat5A 5.0W
VU+ Solo 4K: 2*DVB-S2 + 2*DVB-C/T/T2 (used in DVB-C) & Duo 4K: 2*DVB-S2X + DVB-C (FBC)
AB-Com: PULSe 4K 1*DVB-S2X (+ DVB-C/T/T2)
Edision OS Mio 4K: 1*DVB-S2X + 1*DVB-C/T/T2
Re: Audio AC4 #8
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Posted 9 January 2024 - 18:44
mediainfo on SES UHD Demo Channel
General ID : 1035 (0x40B) Complete name : 20231231 1515 - SES UHD Demo Channel - instant record.ts Format : MPEG-TS File size : 106 MiB Duration : 3 min 7 s Overall bit rate mode : Variable Overall bit rate : 4 751 kb/s Frame rate : 50.000 FPS Video ID : 511 (0x1FF) Menu ID : 1 (0x1) Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main 10@L5.2@Main Codec ID : 36 Duration : 3 min 7 s Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate : 50.000 FPS Color space : YUV Chroma subsampling : 4:2:0 (Type 2) Bit depth : 10 bits Writing library : ATEME Titan File 3.8.8 (4.8.8.0) Color range : Limited Color primaries : BT.2020 Transfer characteristics : HLG / BT.2020 (10-bit) Matrix coefficients : BT.2020 non-constant Audio #1 ID : 512 (0x200) Menu ID : 1 (0x1) Format : E-AC-3 Format/Info : Enhanced AC-3 Commercial name : Dolby Digital Plus Codec ID : 6 Duration : 3 min 7 s Bit rate mode : Constant Bit rate : 96.0 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 31.250 FPS (1536 SPF) Compression mode : Lossy Delay relative to video : -1 s 220 ms Stream size : 2.14 MiB (2%) Language : German Language, more info : Clean effects Service kind : Complete Main Audio #2 ID : 513 (0x201) Menu ID : 1 (0x1) Format : AC-4 Format/Info : Audio Coding 4 Commercial name : Dolby AC-4 Format version : Version 2 Codec ID : 6 Duration : 3 min 7 s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 25.000 FPS (1920 SPF) Compression mode : Lossy Delay relative to video : -1 s 500 ms I-Frame interval : 12 frames Number of presentations : 1 NumberOfGroups : 1 Number of substreams : 1 Presentation #1 : Stereo Main Dialogue normalization : -10.00 Loudness : Yes Integrated loudness (speech gated) : -8.4 LKFS (Automated C or L+R) Integrated loudness (level gated) : -8.4 LKFS Dynamic Range Control : Yes E-AC-3 DRC profile : Film standard Home theater AVR : Film standard Flat panel TV : Film standard Portable speakers : Film standard Portable headphones : Film standard Group #s : 1 Audio description : No Audio rendering indication : Stereo Dialogue enhancement : No Interactivity enabled : No Language : deu Language : German Spoken subtitles : No Group #1 : Main Content classifier : Main Channel coded : Yes Number of substreams : 1 Substream #s : 1 Substream #1 : Stereo Channel mode : Stereo Channel layout : L R Dialogue enhancement : Yes Enabled : Yes Max gain : 9 dB Menu ID : 97 (0x61) Menu ID : 1 (0x1) Format : HEVC / E-AC-3 / AC-4 / / Duration : 3 min 7 s List : 511 (0x1FF) (HEVC) / 512 (0x200) (E-AC-3, German) / 513 (0x201) (AC-4) / 2053 (0x805) () / 2054 (0x806) () Language : / German
Re: Audio AC4 #9
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Posted 10 January 2024 - 15:48
So it follows the ETSI standards, and has an E-AC3 audio channel as fallback.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
Many answers to your question can be found in our new and improved wiki.
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