[mythtv-users] Lossless Transcode 0.25

Scott and Nicole Harris snharris99 at live.com
Tue Mar 20 16:13:02 UTC 2012

On 3/20/2012 08:49, Scott and Nicole Harris wrote:
>> As far as the other suggestion, it's a bit above my paygrade, so I'll have to look into how to dothat. Do you mean multiplex one of the "bad" recordings?

>It's not at all difficult. All three of those have some form of GUI 
>available. Just add one of the bad files into the source list in the 
>GUI, and hit run. All it's going to do is take those raw codec streams 
>and stuff them into a different container type. Think of it like 
>extracting files from a ZIP archive and putting them in a tarball. Your 
>recordings start as an MPEG TS container, and the lossless transcoder 
>outputs an MPEG PS container. I'm curious as to whether the new bits of 
>video are actually damaged, or if something strange is going on with the 
>container that is giving MythTV troubles.
OK, so you want me to run one of the files I've transcoded that is exhibiting this behacior through it, correct?

> The hardware is varied on the frontends. Pentium Dual Core / 4GB ram / Intel Graphics, Core 2 Dual / 6GB ram / NVidia 8400 GS,AMD 4600 X2 / 4GB ram / NVidia 220GT, AMD Athalon 3200 / 2GB ram / NVidia 430GT with >the COre 2 DUo being the MBE where the transcoding is happening.

>All but that first machine listed have nVidia graphics, potentially 
>using VDPAU. I just want to confirm you are seeing this with MythTV's 
>software decoder, and not a hardware decoder. I just skimmed through 
>several recordings I've transcoded in the last few weeks and haven't 
>noticed any such issues.
Correct, all my Nvidia cards are using VDPAU profiles.  So do you want me to try viewing a damaged file on one of my Nvidia frontends using a non VDPAU profile, or is the fact that the behavior presents on my laptop with the Intel graphics enough of an indication that it's present in both hardware and software encoders? 		 	   		  

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