help me understand .mpg playback in npvr

[johnsonx42]

Awhile back I lost the ability to play MPEG and MPEG-2 files in NPVR. Don't ask when, it was a long time ago. I could render MPEG files of any sort just fine in GraphEdit, so I knew I had the necessary splitter installed.

Tonight I finally decided I wanted to fix it, and the only way I could get it to work was to set <ForceMpgGraph> to False in config.xml. The other apparently related setting <MpgUsingSplitter> seems to make no difference.

Why do I have to set <ForceMpgGraph> to False, why does it default to True, and what other consequence does this have?

With <ForceMpgGraph> set to True, the NPVR log shows an incomplete graph when I try play an MPEG, and of course it doesn't play:

Code:

2012-01-01 23:47:55.424    [DEBUG][1]    Graph filter list:
2012-01-01 23:47:55.424    [DEBUG][1]     - MPEG-2 Demultiplexer
2012-01-01 23:47:55.424    [DEBUG][1]     - File Source (Async.)

But with it set to False, the graph looks more complete and the file plays:

Code:

2012-01-02 00:05:08.066    [DEBUG][1]    Graph filter list:
2012-01-02 00:05:08.067    [DEBUG][1]     - Default DirectSound Device
2012-01-02 00:05:08.067    [DEBUG][1]     - EVR Renderer
2012-01-02 00:05:08.067    [DEBUG][1]     - AC3Filter
2012-01-02 00:05:08.067    [DEBUG][1]     - ffdshow Video Decoder
2012-01-02 00:05:08.067    [DEBUG][1]     - \\DAVE-PC\Movies\Raiders of the Lost Ark.mpg

So it's fine that it works with <ForceMpgGraph> set to False, but I'm not happy until I understand it.

:confused:

[mvallevand]

That's the exact graph difference I have seen in posts which were fixed when I recommended users install the Haali splitter or LAV.

Martin

[johnsonx42]

ok, so this is something along the lines of windows knowing how to play the file if npvr just lets it do it on it's own, but whatever I have installed doesn't work if NPVR tries to build the graph directly? I already have the LAV decoders, so I'll go ahead and put the full LAV package on with the splitter too.