[mythtv-users] Fwd: Re: Mythfrontend freezing and VDPAU?

John jksjdevelop at gmail.com
Mon Mar 2 10:19:01 UTC 2020

On 02/03/2020 01:48, Allen Edwards wrote:
> I continue my search for why my mythfrontend is locking up. As I have 
> said, the real bother is that it basically requires a restart of the 
> computer to clear up the problem as I have discussed previously.
> The error I am seeing in the log is this
> *Decoder timed out waiting for free video buffers*
> What I have found is that several others have had this problem and 
> have isolated it to VDPAU with an interlaced source. We had a lock up 
> again last night and sure enough the source was 1080i and the output 
> is 1080p.
> There does not seem to be a solution online that I can find.
> Here is one thread https://forum.mythtv.org/viewtopic.php?t=2735
> Here is another 
> https://devtalk.nvidia.com/default/topic/1037255/linux/mythtv-errors-lockups-with-vdpau-and-340-or-390-drivers-/
> My question is, am I using the right driver and video configuration? 
> Next question, what should I use if VDPAU is unacceptable?
> I am running Mythbuntu
> Ubuntu 16.04.1 LTS
> MythTV Version : v0.28.2-6-g9031599
> MythTV Branch : fixes/0.28
> AMD Athlon(tm) 64 X2 Dual Core Processor 5400+
> 6G memory
> GeForce GTX 750Ti
> nvidia 390 driver
> VDPAU High Quality
> Allen
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I have found that using High Quality software decoding to be more 
reliable and tolerates faults in the broadcast stream. The cpu load is 
only moderate - try it.

By the way this issue is still present in V31 so upgrading will not help.

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