[mythtv-users] Status of ffmpeg 4.4.1

[James Abernathy]

On Wed, Nov 17, 2021 at 3:29 PM James Abernathy <jfabernathy at gmail.com>
wrote:

>
>
> On Wed, Nov 17, 2021 at 12:37 PM James Abernathy <jfabernathy at gmail.com>
> wrote:
>
>>
>>
>> On Wed, Nov 17, 2021 at 10:57 AM Peter Bennett <pb.mythtv at gmail.com>
>> wrote:
>>
>>> The extra compile dependencies, libsoundtouch and libzip-dev should be
>>> installed if you run the latest ansible script.
>>>
>>> bullseye uses libcec6 and  libzip4. I have added those as alternatives
>>> in the packaging script. Please try again and see if that solves the
>>> problem.
>>>
>>> Peter
>>>
>>
>> So it builds clean and the deb installs clean.  My test RPI4 is
>> overclocked to 2Ghz and running on a USB3 SATA SSD.
>>
>> Initially looking at different HD videos from OTA HDHR tuners is working
>> fine.  I'm using OpenGL Low Quality profile and very little jitter in the
>> FPS using the menu playback data. Most of the time on interlaced stuff it's
>> 30+/- 0.02, but sometimes jumps to 0.15.  Non-interlaced is better than
>> that.
>>
>> Only issue right now is audio. I tried to test the upconverting that you
>> fixed, but my setup was a Sony TV connected via HDMI to the RPI4 and so
>> Stereo was all I could get. Changing it to 5.1 caused mythfrontend to
>> lockup when I tried to play a video.  I figured it would just work without
>> any 5.1
>>
>> I need to test on a real 5.1 system in my den next.  RPI4 audio is always
>> a pain.  Getting it back to stereo without an error required me to try
>> different audio devices and then set it back to the right one for it to
>> start playing again.
>>
>> But this is the best picture on a RPI4 I've seen; very usable.  Now that
>> the fake KMS driver is no longer supported on Bullseye, it is nice that it
>> all comes together.
>>
>> When I test in the Den I'll also have access to a 4K at 60 TV along with
>> the 5.1.  I'll report back.
>>
>> Jim A
>>
>
> here's what I found on a 4K 5.1 system with RPI4 ffmpeg-resync:
>
> This is run using the run_mythfront.sh script from pi-utils, that I
> changed a little.  I hard coded the resolution to 1920x1080 at 60.  Audio is
> set to 5.1 with Dolby and DTS checked. Upconvert stereo is also checked.
>
> I have a log for a short session where I go to a station 5_3 that is
> stereo and it stalls for a minute and 30 seconds before anything happens
> and then it plays.  I have the options for mythfrontend in the script set
> to -v libva,audio with a log file option.  I see a mixer error at 15:03:29
> and then nothing for 1.5 minutes. After it starts playing, no problems.
>
> All the videos with HD and 5.1 audio are fine.
>
> Jim A
>
Log file had to be pt on Google Drive
https://drive.google.com/file/d/1aBEMVLA4nGojiBmmgJA0pe-mWrX6wA_8/view?usp=sharing
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