[mythtv-users] Version 4.4.1 of FFmpeg ready for testing

[James Abernathy]

On Sun, Oct 31, 2021 at 4:30 PM James Abernathy <jfabernathy at gmail.com>
wrote:

>
>
> On Sun, Oct 31, 2021 at 4:22 PM James Abernathy <jfabernathy at gmail.com>
> wrote:
>
>>
>>
>> On Sun, Oct 31, 2021 at 3:39 PM Peter Bennett <pb.mythtv at gmail.com>
>> wrote:
>>
>>>
>>> On 10/31/21 2:21 PM, James Abernathy wrote:
>>>
>>>
>>>
>>> On Sun, Oct 31, 2021 at 11:18 AM Peter Bennett <pb.mythtv at gmail.com>
>>> wrote:
>>>
>>>> I have merged version 4.4.1 of FFmpeg into the latest MythTV source
>>>> master branch. The merged version is in branch devel/ffmpeg-resync. I
>>>> have not merged it into the main master as yet in case there are
>>>> problems.
>>>>
>>>> I have run a few basic tests of playback with NVDEC, VDPAU and Standard
>>>> (ffmpeg software) decoding. Also I tested recording/LiveTV with Ceton.
>>>> All tests were successful.
>>>>
>>>> Anybody who is interested, please build and test it to verify that all
>>>> is well before we merge it into the main master branch.
>>>>
>>>> Peter
>>>>
>>>
>>> I have a test system with v31 on it via PPA.  It's working fine.  What
>>> else do I need to do besides building the branch devel/ffmpeg-resync.  I
>>> have built from source before, but always starting with a working system.
>>>
>>> Jim A
>>>
>>>
>>> You will need a v32-pre version (master). If you run it on v31 it will
>>> upgrade the database to v32 and then you will not be able to go back to v31.
>>>
>>> Peter
>>>
>>
>> I figured it would need an upgraded database. I got the upgrade done, but
>> it turns out that I could not run mythbackend as a service because the
>> official .service file assumes /usr/bin/mythbackend.  When I built from
>> source it put the executables in /usr/local/bin.  Once that was fixed it
>> ran.
>>
>> Now to the problems I'm seeing.  I have a PBS channel that has an Audio
>> Disabled error on mythfrontend due to an initialization error.  All the
>> other channels work fine.  In Setup/audio the testing of the channels work
>> and I hear sound but the error popup says Invalid audio device.
>>
>> If you can't duplicate, let me know and I'll see what logs I can dig up
>>
>> jim A
>>
>>
> Some of the log on that audio failure.
> 2021-10-31 16:28:01.380638 I  Player(0): Opening
> '/srv/mythtv/livetv/10401_20211031202800.ts'
> 2021-10-31 16:28:01.741521 I  AFD: codec AC3 has 2 channels
> 2021-10-31 16:28:01.741668 I  AFD: Opened codec 0x55786d540c40, id(AC3)
> type(Audio)
> 2021-10-31 16:28:01.741922 I  AFD: codec AC3 has 2 channels
> 2021-10-31 16:28:01.742036 I  AFD: Opened codec 0x55786d64b240, id(AC3)
> type(Audio)
> 2021-10-31 16:28:01.759902 I  VideoOutput: SetDeinterlacing (Doublerate
> 0): Single High|CPU|GLSL Double None
> 2021-10-31 16:28:01.759949 I  AFD: Using ffmpeg for video decoding
> 2021-10-31 16:28:01.760169 I  AFD: Opened codec 0x55786d837a40,
> id(MPEG2VIDEO) type(Video)
> 2021-10-31 16:28:01.761207 E  DEnc: Could not open codec, invalid bitrate
> or samplerate
> 2021-10-31 16:28:01.761213 E  AudioOutput Error: Ac-3 Encoder
> Initialization Failed
> 2021-10-31 16:28:01.761225 I  AOBase: Opening audio device
> 'hdmi:CARD=PCH,DEV=0' ch 6(2) sr 48000 sf signed 32 bit reenc 1
> 2021-10-31 16:28:01.836411 E  ALSA: no playback control PCM found on mixer
> device default
> 2021-10-31 16:28:01.836435 E  ALSA: Unable to open audio mixer. Volume
> control disabled
> 2021-10-31 16:28:01.836526 N  AudioPlayer: Disabling Audio, reason is:
> Ac-3 Encoder Initialization Failed
>
> Jim A
>
>

I found some Standard Def Videos in m4v format that had the same audio
failure.   Other Videos files in .m4v that were HD worked fine.

Jim A
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