[mythtv-users] Mythtv v35 fails decode with Nvidia NVDEC

[James Abernathy]

On Fri, Feb 14, 2025 at 7:08 AM Ryan Patterson <ryan.goat at gmail.com> wrote:

>
> On Thu, Feb 13, 2025 at 9:16 PM James Abernathy <jfabernathy at gmail.com>
> wrote:
>
>> On Thu, Feb 13, 2025 at 9:04 PM James Abernathy <jfabernathy at gmail.com>
>> wrote:
>>
>>> On Thu, Feb 13, 2025 at 8:54 PM James Abernathy <jfabernathy at gmail.com>
>>> wrote:
>>>
>>>> On Thu, Feb 13, 2025 at 8:27 PM Ryan Patterson <ryan.goat at gmail.com>
>>>> wrote:
>>>>
>>>>> I just upgraded to fixes/35 and it is not working correctly.  Nothing
>>>>> will play when set to use the Nvidia NVDEC video decoder.
>>>>>
>>>>> The error displayed says, "Video Frame Buffering Failed Too Many Times"
>>>>>
>>>>> I switched to VDPAU decoding and playback works.  But I need NVDEC for
>>>>> 4K content.
>>>>>
>>>>> _____________
>>>>> Ryan Patterson
>>>>> May the wings of liberty never lose a feather.
>>>>>
>>>>>
>>>> What are you seeing? Any log errors?  I have a laptop with hybrid GFX.
>>>> Nvidia and Intel, so I can launch mythfrontend with pure Nvidia or pure
>>>> Intel. Since I've been told that using OpenGL only works best with the
>>>> current software and average CPU.  That even applies to RPI 4. I'm on v35
>>>> on everything so I can test it.
>>>>
>>>> Jim A
>>>>
>>>
>>> I did a quick test on my laptop and launched mythfrontend with dedicated
>>> GPU option. NVDEC would not even play for me. I switched to OpenGL High
>>> Quality and it played perfectly. Of course my laptop is pretty good. Intel©
>>> Core™ i7-10750H CPU @ 2.60GHz × 6.
>>>
>>> Jim A
>>>
>>>
>> I switched my laptop to Nvidia GPU only and rebooted. I got the same
>> error as you. However, using OpenGL High Quality was a perfect picture on
>> the Nvidia..
>>
>> Jim A
>>
>
> Thanks for confirming you see the same issue.  Yes, other decoders work
> (VDPAU, FFMPEG, etc.).  But my CPU is not powerful enough for h.265 HEVC 4K
> decode.  That is why I need Nvidia NVDEC.  Hopefully the issue is fixed
> soon.
>
> -Ryan
>

You might want to open an issue on the github.com site for mythtv.
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