[mythtv-users] UK - ITV4 channel change

John Pilkington johnpilk222 at gmail.com
Mon Jun 28 09:52:22 UTC 2021

On 28/06/2021 09:32, Mike Perkins wrote:
> On 28/06/2021 08:56, John Pilkington wrote:
>> On 28/06/2021 05:25, Stephen Worthington wrote:
>>> On Sun, 27 Jun 2021 15:27:49 +0100, you wrote:
>>>> I discovered yesterday that I have my own scheduling curiosity.
>>>> I cusomarily record the Tour de France, which is broadcast on ITV4, 
>>>> usually channel 24. Yesterday I
>>>> had the option of watching it live and discovered that channel 24 
>>>> was "not available"; looked in the
>>>> EPG and found it had moved to 25.
>>>> This morning it occurred to me to find out what I had actually 
>>>> recorded on 24 yesterday. What I
>>>> found was a low-bitrate broadcast of the Tour, exactly as I had 
>>>> watched, but with one oddity: The
>>>> only sound was ambient. That is, I had the motorbike noise, crowds, 
>>>> even the two major crashes, but
>>>> no commentary. Oddly this even extended to the adverts! Perfect 
>>>> high-quality adverts /with music/
>>>> but no voices!
>>>> Now about to do a rescan existing channels :(
>>> There may be other audio channels with the normal sound - see if
>>> M(enu) > Audio has a "Select audio track" option, which is present
>>> whenever there is more than one audio track in a recording file.
>> Yes.  This might be related to (fixed) issue #351, where the new code 
>> follows stream changes instead of sticking with the structure it first 
>> thought of.
> Thank you. I'm still on v30 but I'll take a look. I have suspicions that 
> a recent OS update (Debian Buster) may have scrambled my audio 
> configurations.
> I have no time at present to organize an upgrade to v31. What isn't 
> broken, etc.
> Listening to the crowd was somewhat spooky, though.

FWIW I recorded the 'Highlights - Stage Two' on ITV (SD) this morning. 
Two audio channels, with commentary on 'normal' and the audio 
description channel silent.  Maybe HD was different - or a glitch has 
been sorted.


Input #0, mpegts, from '/mnt/dat1/RSG2/10003_20210628021300.ts':
   Duration: 00:55:58.47, start: 93858.656267, bitrate: 2976 kb/s
     Stream #0:0[0x6a5]: Video: mpeg2video (Main), yuv420p(tv, 
progressive), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 15000000/0/0 buffer size: 1835008 
vbv_delay: N/A
     Stream #0:1[0x6a6](eng): Audio: mp2, 48000 Hz, stereo, fltp, 192 kb/s
     Stream #0:2[0x6a7](eng): Audio: mp2, 48000 Hz, mono, fltp, 64 kb/s


John P

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