UK Channel 4 AUDIO inaudible

Marc Ominus

I had no time to test the new install of HTS Tvheadend 4.3-1983~gb8710206e before Xmass,
and just noticed playing (On PC Debian 11 | VLC 3.0.16) all the recordings from Channel 4 would be playing fine when the adverts
are on, but as soon as the "program" starts it becomes inaudible, for the whole period of the program
until the adverts start again and then the audio would start working again and then after add it would be inaudible again

for the whole program length until the adds come on when the audio would start working.......

There was no "Errors" or "Data errors" during the recording ...... anyone any advise?

https://tvheadend.org/attachments/9206

Here is the mediainfo of one of the files:

Format : Matroska Format version : Version 2 File size : 5.17 GiB Duration : 2 h 17 min Overall bit rate : 5 392 kb/s Movie name : Indiana Jones and the Temple of... ContentType : Movie / Drama Writing application : Tvheadend 4.3-1983~gb8710206e Writing library : Tvheadend Matroska muxer Original source form : TV DATE_BROADCASTED : 2021-12-31 18:45:00 TVCHANNEL : Channel 4 HD Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : V_MPEG4/ISO/AVC Duration : 2 h 17 min Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 25.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Language : English Default : Yes Forced : No Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : A_AAC-2 Duration : 2 h 17 min Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Delay relative to video : -707 ms Language : English Default : Yes Forced : No Text ID : 3 Format : DVB Subtitle Codec ID : S_DVBSUB Codec ID/Info : Picture based subtitle format used on DVBs Language : English Default : Yes Forced : No Menu 00:00:00.000 : 00:00:00.000 00:00:23.827 : 00:00:23.827 00:25:44.707 : 00:25:44.707 00:31:19.707 : 00:31:19.707 00:50:22.347 : 00:50:22.347 00:55:57.347 : 00:55:57.347 01:15:14.787 : 01:15:14.787 01:20:49.787 : 01:20:49.787 01:47:07.507 : 01:47:07.507 01:52:42.507 : 01:52:42.507 02:14:53.067 : 02:14:53.067 02:17:10.747 : 02:17:10.747

The same file when playing on Android 11 device with VLC 3.4.2 would start playing the file without any audio problems,

then few minutes it would cut out, on restarting playback the "audio" would not work any more :(

Changing from Audio - Disabled and back to Track 1 [English] does not work and the movie is silent, rewinding to adverts and

the audio would start working again ....fast forward to the movie and there would be no audio again .....

I am streaming the file in LAN via miniDLNA 1.3.0

Log shows this:

sudo journalctl --since "2021-12-31 18:40:00" --until "2021-12-31 21:09:00" -u tvheadend -f -- Journal begins at Fri 2021-11-26 13:40:26 GMT. -- Dec 31 18:44:30 OptiPlex9020M tvheadend[564]: dvr: "Indiana Jones and the Temple of..." on "Channel 4 HD" recorder starting Dec 31 18:44:30 OptiPlex9020M tvheadend[564]: mpegts: 545.833MHz in UK FreeView - tuning on Sony CXD2820R #2 : DVB-T #0 Dec 31 18:44:30 OptiPlex9020M tvheadend[564]: subscription: 0714: "DVR: Indiana Jones and the Temple of..." subscribing on channel "Channel 4 HD", weight: 500, adapter: "Sony CXD2820R #2 : DVB-T #0", network: "UK FreeView", mux: "545.833MHz", service: "Channel 4 HD", profile="matroska", username="" Dec 31 18:44:32 OptiPlex9020M tvheadend[564]: time: TDT - stime(2) not implemented Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: /home/hts/Indiana-Jones-and-the-Temple-of...-Channel-4-HD2021-12-3118-45.mkv from adapter: "Sony CXD2820R #2 : DVB-T #0", network: "UK FreeView", mux: "545.833MHz", provider: "<N/A>", service: "Channel 4 HD" Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: # type lang resolution aspect ratio sample rate channels Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: 1 H264 1920x1080 16:9 Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: 2 AAC-LATM eng 48000 2 Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: 3 AAC-LATM eng 96000 ? <disabled, no valid input> Dec 31 18:45:00 OptiPlex9020M tvheadend[564]: dvr: 4 DVBSUB eng Dec 31 18:54:35 OptiPlex9020M tvheadend[564]: epggrab: UK: Freeview - data completion timeout for 545.833MHz in UK FreeView Dec 31 19:13:21 OptiPlex9020M tvheadend[564]: tsfix: The timediff for AAC-LATM is big (155580995), using current dts Dec 31 21:02:10 OptiPlex9020M tvheadend[564]: subscription: 0714: "DVR: Indiana Jones and the Temple of..." unsubscribing from "Channel 4 HD", username="" Dec 31 21:02:10 OptiPlex9020M tvheadend[564]: dvr: "Indiana Jones and the Temple of..." on "Channel 4 HD": End of program: Completed OK

davep

I wonder if you are recording the "Visual impaired commentary" track instead of the primary audio?

This is what I get recording the same channel:

mediainfo 'Indiana Jones and the Last Crusade.ts' General ID : 1 (0x1) Complete name : Indiana Jones and the Last Crusade.ts Format : MPEG-TS File size : 145 MiB Duration : 3 min 36 s Overall bit rate mode : Variable Overall bit rate : 5 622 kb/s Original network name : Astra Satellite Network 19,2'E Video ID : 301 (0x12D) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Format settings, GOP : M=4, N=12 Codec ID : 27 Duration : 3 min 35 s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 25.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio #1 ID : 302 (0x12E) Menu ID : 1 (0x1) Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Muxing mode : LATM Codec ID : 17-2 Duration : 3 min 36 s Bit rate mode : Variable Channel(s) : 6 channels Channel layout : C L R Ls Rs LFE Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Delay relative to video : -956 ms Language : English Audio #2 ID : 306 (0x132) Menu ID : 1 (0x1) Format : AAC LC SBR Format/Info : Advanced Audio Codec Low Complexity with Spectral Band Replication Commercial name : HE-AAC Format settings : NBC Muxing mode : LATM Codec ID : 17-2 Duration : 3 min 36 s Bit rate mode : Variable Channel(s) : 1 channel Channel layout : C Sampling rate : 48.0 kHz Frame rate : 23.438 FPS (2048 SPF) Compression mode : Lossy Delay relative to video : -744 ms Language : English Language, more info : Visual impaired commentary Text ID : 305 (0x131) Menu ID : 1 (0x1) Format : DVB Subtitle Codec ID : 6 Duration : 3 min 33 s Delay relative to video : 3 s 252 ms Language : English Menu ID : 300 (0x12C) Menu ID : 1 (0x1) Duration : 3 min 36 s List : 301 (0x12D) (AVC) / 302 (0x12E) (AAC, English) / 306 (0x132) (AAC, English) / 305 (0x131) (DVB Subtitle, English) Language : / English / English / English Service name : Channel 4 HD Service type : MPEG-2 HD digital television

(Interestingly the source is given as Astra 19.2E despite being recorded from Freeview).

This plays fine with VLC 3.0.16.

The main difference is that I'm using the 'pass' profile which just records the raw data stream.

Marc Ominus

This is strange as you have Visual impaired commentary included, but my is missing or disabled:

dvr: 3 AAC-LATM eng 96000 ? <disabled, no valid input>

Attached Streming/Recorder profile settings.

Out of interest what tuner do you use?

Marc Ominus

I have just tried on RaspberryPi running HTS Tvheadend 4.3-1986~g09a2c71ab and (recording to SD Card short samples in mkv and TS and both have got the second audio track

Sample rate showing as 96000, with unknown channels ... is that not strange?

2022-01-01 20:33:11.001 subscription: 008B: "DVR: New: The Great New Year Bake Off" subscribing on channel "Channel 4 HD", weight: 500, adapter: "Sony CXD2880 #0 : DVB-T #0", network: "UK Freeview", mux: "545.833MHz", service: "Channel 4 HD", profile="matroska", username="" 2022-01-01 20:33:14.359 tsfix: transport stream H264, DTS discontinuity. DTS = 156150, last = 62550 2022-01-01 20:33:15.708 dvr: /home/hts/New_-The-Great-New-Year-Bake-Off-Channel-4-HD2022-01-0119-40.mkv from adapter: "Sony CXD2880 #0 : DVB-T #0", network: "UK Freeview", mux: "545.833MHz", provider: "", service: "Channel 4 HD" 2022-01-01 20:33:15.708 dvr: # type lang resolution aspect ratio sample rate channels 2022-01-01 20:33:15.708 dvr: 1 H264 1920x1080 16:9 2022-01-01 20:33:15.708 dvr: 2 AAC-LATM eng 48000 2 2022-01-01 20:33:15.708 dvr: 3 AAC-LATM eng 96000 ? 2022-01-01 20:33:15.708 dvr: 4 DVBSUB eng 2022-01-01 20:33:42.072 subscription: 008B: "DVR: New: The Great New Year Bake Off" unsubscribing from "Channel 4 HD", username="" 2022-01-01 20:33:42.079 dvr: "New: The Great New Year Bake Off" on "Channel 4 HD": End of program: Completed OK

2022-01-01 20:35:24.765 mpegts: 545.833MHz in UK Freeview - tuning on Sony CXD2880 #0 : DVB-T #0 2022-01-01 20:35:24.766 subscription: 008D: "DVR: New: The Great New Year Bake Off" subscribing on channel "Channel 4 HD", weight: 500, adapter: "Sony CXD2880 #0 : DVB-T #0", network: "UK Freeview", mux: "545.833MHz", service: "Channel 4 HD", profile="pass", username="" 2022-01-01 20:35:26.289 dvr: /home/hts/New_-The-Great-New-Year-Bake-Off-Channel-4-HD2022-01-0119-40.ts from adapter: "Sony CXD2880 #0 : DVB-T #0", network: "UK Freeview", mux: "545.833MHz", provider: "", service: "Channel 4 HD" 2022-01-01 20:35:26.290 dvr: # type lang resolution aspect ratio sample rate channels 2022-01-01 20:35:26.290 dvr: 1 H264 1920x1080 ? 2022-01-01 20:35:26.290 dvr: 2 AAC-LATM eng 96000 ? 2022-01-01 20:35:26.290 dvr: 3 AAC-LATM eng 96000 ? 2022-01-01 20:35:26.290 dvr: 4 DVBSUB eng 2022-01-01 20:38:53.882 subscription: 008D: "DVR: New: The Great New Year Bake Off" unsubscribing from "Channel 4 HD", username="" 2022-01-01 20:38:53.891 dvr: "New: The Great New Year Bake Off" on "Channel 4 HD": End of program: Completed OK

Format : Matroska Format version : Version 2 File size : 17.1 MiB Duration : 27 s 200 ms Overall bit rate : 5 287 kb/s Movie name : New: The Great New Year Bake Off ContentType : Show / Game show Writing application : Tvheadend 4.3-1986~g09a2c71ab Writing library : Tvheadend Matroska muxer Original source form : TV DATE_BROADCASTED : 2022-01-01 19:40:00 TVCHANNEL : Channel 4 HD Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : V_MPEG4/ISO/AVC Duration : 27 s 200 ms Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 25.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Language : English Default : Yes Forced : No Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : A_AAC-2 Duration : 27 s 200 ms Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Delay relative to video : -100 ms Language : English Default : Yes Forced : No Text ID : 3 Format : DVB Subtitle Codec ID : S_DVBSUB Codec ID/Info : Picture based subtitle format used on DVBs Language : English Default : Yes Forced : No

Format : MPEG-TS File size : 123 MiB Duration : 3 min 27 s Overall bit rate mode : Variable Overall bit rate : 4 971 kb/s Original network name : Astra Satellite Network 19,2'E Video ID : 301 (0x12D) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : 27 Duration : 3 min 26 s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 25.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 302 (0x12E) Menu ID : 1 (0x1) Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Muxing mode : LATM Codec ID : 17-2 Duration : 3 min 27 s Bit rate mode : Variable Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Delay relative to video : -876 ms Language : English Editorial classification : Main Mix type : Dependent Text ID : 305 (0x131) Menu ID : 1 (0x1) Format : DVB Subtitle Codec ID : 6 Duration : 3 min 21 s Delay relative to video : 3 s 404 ms Language : English Menu ID : 300 (0x12C) Menu ID : 1 (0x1) Duration : 3 min 27 s List : 301 (0x12D) (AVC) / 302 (0x12E) (AAC, English) / 305 (0x131) (DVB Subtitle, English) Language : / English / English Service name : Channel 4 HD Service type : MPEG-2 HD digital television

And TS stream has got an Original network name as Astra Satellite Network 19,2'E as well.

So it must be a wrong settings maybe?

But I have compared settings on both machines and they are identical.

I have installed TVH from Repo:

deb https://apt.tvheadend.org/unstable bullseye main

Should I just backup /home/hts/.hts/tvheadend/* and start again or is there an alternative?