ATSC3 issues with audio/video

I have same issue as you. If I flip the audio to “Spanish” the stream starts to play.

Same here:

:partying_face: This fixed it for me:

cc: @RockandRoller70, @hal9000, @kevini

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This seems fixed for me too! :slight_smile:

I'm on Android TV.

You’re in luck then!

I'm having the same no audio issues on my recordings and sideloading the beta app for my Firestick is a PAIN. So I'm hoping this fix gets released ASAP. I do have the beta on my apple TV and it fixes the audio so that's my plan to watch them there for the time being.

Is this method no longer available?

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Make sure developer options are on ...

Not Required any longer go to on ChannelsDVR APP .. settings > support > install beta

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Guess I should have checked.

It's definitely an improvement from not working at all. Slow channel tuning is occurring, however. One of my ATSC3 channels takes about 3 seconds of spinning for it to kick in, but the other is taking 8-10 seconds. In addition, the slower tuning channel is experiencing some intermittent strobing.

I tried both software and hardware decoding.

Good to see the Channels Devs are working on it. Appreciate it. If there's anything I can provide to help, be happy to.

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This helped with my local Fox ATSC 3.0 issue. Hope to see it pushed to stable release soon. Wish I had tested this out sooner... Super Bowl over Antenna was a bust at my house yesterday. The ATSC 1.0 station reception doesn't come in, but the 3.0 is great (when it works).

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Wow this is so much easier than before. Thanks for the heads up. So strange that the Developer Option is hidden in the Firestick menu now. Had to do the 7 Clicks trick to get it to show up but after that it was pretty simple.

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UPDATE:

My ASTC 3.0 channel with audio problems is now working and indeed shows 12 channel AC4. WRAL is also sending the signal in HDR. Unlike other markets, none of the local broadcasts are encrypted and have a lot of ASTC 3.0 channels. Only one NBC station in a market over (Greensboro) is encrypted.

I missed this. I guess I can renew my subscription. Fixed it for me as well.

Don't get used to it. Encryption is coming barring a miracle :pensive:

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Anyone know when this will get updated in a public release?

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Although a bit late to the party...

GOOD NEWS!

Both HDHOMERUN and Channels apps can decode AC-4 (5.1.4) 10 channel audio.

  • ATV
  • iOS
  • iPadOS
  • macOS
Model: HDHR5-4K
Device ID: 10816D14
Firmware: 20250130beta1

NOT SO GOOD NEWS

There is a ~6 second delay before video starts, followed by an additional ~2 seconds before the audio starts.

CAPTURE METHOD

curl "http://hdhomerun.local:5004/tuner0/v112.1?duration=60" -o wpec_atsc3.mpg

ENCODING

Used mediainfo app to read encoding.

General
ID                                       : 1 (0x1)
Complete name                            : /Users/Downloads/wpec_atsc3.mpg
Format                                   : MPEG-TS
File size                                : 37.1 MiB
Duration                                 : 59 s 870 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 5 197 kb/s
Frame rate                               : 59.940 FPS
Conformance errors                       : 2
 MPEG-TS                                 : Yes
  General compliance                     : File size 38890812 is less than expected size at least 38890996 (offset 0x2516D38)
 General compliance                      : Element size 184 is more than maximal permitted size 0 (offset 0x2516D3C)
FileExtension_Invalid                    : ts m2t m2s m4t m4s tmf ts tp trp ty

Video
ID                                       : 49 (0x31)
Menu ID                                  : 3 (0x3)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L4.1@Main
HDR format                               : SL-HDR1, Version 1.0, Parameter-based, non-constant
Codec ID                                 : 36
Duration                                 : 59 s 876 ms
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 59.940 (60000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Mastering display color primaries        : BT.709
Mastering display luminance              : min: 0.0000 cd/m2, max: 1000 cd/m2

Audio #1
ID                                       : 50 (0x32)
Menu ID                                  : 3 (0x3)
Format                                   : AC-4
Format/Info                              : Audio Coding 4
Commercial name                          : Dolby AC-4
Format version                           : Version 2
Codec ID                                 : 6
Duration                                 : 59 s 959 ms
Channel(s)                               : 10 channels
Channel layout                           : L R C LFE Ls Rs Tfl Tfr Tbl Tbr
Sampling rate                            : 48.0 kHz
Frame rate                               : 29.970 (30000/1001) FPS (1601.6 SPF)
Compression mode                         : Lossy
Delay relative to video                  : 4 ms
Language                                 : English
I-Frame interval                         : 60 frames
Number of presentations                  : 1
NumberOfGroups                           : 1
Number of substreams                     : 1
Presentation #1                          : 5.1.4 Main (English)
 Presentation ID                         : 0
 Dolby Atmos                             : Yes
 Dialogue normalization                  : -24.00
 Language                                : English
 Loudness                                : Yes
  Integrated loudness (speech gated)     : -22.5 LKFS
  Integrated loudness (level gated)      : -23.1 LKFS
  Audio Loudness Standard                : ATSC A/85
  Realtime loudness corrected            : Yes
  Dialogue corrected                     : Yes
 Dynamic Range Control                   : Yes
 Downmix                                 : Yes
  LoRo center mix gain                   : -3.0 dB
  LoRo surround mix gain                 : -3.0 dB
  LtRt center mix gain                   : -3.0 dB
  LtRt surround mix gain                 : -3.0 dB
  Custom downmix targets                 : Yes
   5.1                                   : Yes
    Top fronts to front                  : -3.0 dB
    Top fronts to side                   : -inf
    Top backs to side                    : -3.0 dB
 Group #s                                : 1
Group #1                                 : Main
 Content classifier                      : Main
 Language                                : English
 Channel coded                           : Yes
 Number of substreams                    : 1
 Substream #s                            : 1
Substream #1                             : 5.1.4
 Channel mode                            : 5.1.4
 Channel layout                          : L R C LFE Ls Rs Tfl Tfr Tbl Tbr
 Dialogue enhancement                    : Yes
  Enabled                                : Yes
  Max gain                               : 9 dB
  Channel configuration                  : C

Audio #2
ID                                       : 51 (0x33)
Menu ID                                  : 3 (0x3)
Format                                   : AC-4
Format/Info                              : Audio Coding 4
Commercial name                          : Dolby AC-4
Format version                           : Version 2
Codec ID                                 : 6
Duration                                 : 59 s 959 ms
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 29.970 (30000/1001) FPS (1601.6 SPF)
Compression mode                         : Lossy
Delay relative to video                  : 4 ms
Language                                 : Spanish
I-Frame interval                         : 60 frames
Number of presentations                  : 1
NumberOfGroups                           : 1
Number of substreams                     : 1
Presentation #1                          : Stereo Main (Spanish)
 Presentation ID                         : 0
 Dialogue normalization                  : -24.00
 Language                                : Spanish
 Loudness                                : Yes
  Integrated loudness (speech gated)     : -22.4 LKFS
  Integrated loudness (level gated)      : -23.2 LKFS
  Audio Loudness Standard                : ATSC A/85
  Realtime loudness corrected            : Yes
  Dialogue corrected                     : Yes
 Dynamic Range Control                   : Yes
 Group #s                                : 1
Group #1                                 : Main
 Content classifier                      : Main
 Language                                : Spanish
 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
  Channel configuration                  : L

Menu
ID                                       : 48 (0x30)
Menu ID                                  : 3 (0x3)
Format                                   : HEVC / AC-4 /  / AC-4
Duration                                 : 59 s 860 ms
List                                     : 49 (0x31) (HEVC) / 50 (0x32) (AC-4, English) / 57 (0x39) () / 51 (0x33) (AC-4, Spanish)
Language                                 :  / English /  / Spanish


Let me know when DRM is removed.

2 Likes

Hate to disappoint, but unless you have several dozen Brinks trucks loaded with untraceable cash rolling up in DC, it ain’t gonna happen.

1 Like

Do they need to be Brinks? Unfortunately it is looking like you are correct, therefore ATSC3 and Channels users for the most part is going to be a bad marriage going forward. It already is for most of us!