[mythtv] HVEC frame counting broken

[John P Poet]

On Sun, Sep 25, 2022 at 10:40 AM John P Poet <jppoet at gmail.com> wrote:

> On Sun, Sep 25, 2022 at 10:33 AM Scott Theisen <scott.the.elm at gmail.com>
> wrote:
>
>> On 9/25/22 11:43, John P Poet wrote:
>>
>>
>>
>> Thank you Scott. I just uploaded a HEVC sample to dropbox. It should be
>> shared with you.
>>
>>
>> I have the sample.
>>
>>
>> Without 7b2ac1eeb5, HEVCParser::parseSPS detects the
>> sps_id: 0
>> width, height: 1920x1088
>> unitsInTick / timeScale: 166817 / 10000000
>>
>> With 7b2ac1eeb5, HEVCParser::parseSPS the spd_id, width and height are
>> garbage and the unitsinTick / timeScale are never decoded --
>> vps_extension_flag is zero.
>>
>> My best guess is that there is an alignment issue and the BitReader that
>> is being passed into HEVCParser::parseSPS is not pointing at the correct
>> position.
>>
>>
>> OK, but how are you getting the code to execute on the sample?
>> mythcommflag --rebuild something?  Adding to Videos and scanning for
>> changes?
>>
>> Thanks,
>>
>> Scott
>>
>
> I am using an ExternalRecorder (https://github.com/jpoet/Magewell2TS).
> Using the mythfilerecorder ExternalRecorder that is packaged with Myth
> should provide the same result. I am pretty sure that `mythcommflag
> --rebuild` results in a different code path and I have not tried it.
>
> If you have trouble setting up mythfilerecorder I will do that this
> afternoon and then send you instructions.
>

Actually, I won't. I keep forgetting that I don't currently have access to
my development machine and my production machine will be recording football
today. So, that would have to wait until tomorrow sometime.

John
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