Codecs for Dummies

pak2

New member
This may not be a DS topic, but it derives from the render error discussion in the MenuModder sticky and there are some experienced people here.

Like many, I never purposely installed a codec pack to handle DVD files. The decoders in my computer originated from one of the software players bundled with hardware --> I assume the last one I installed. As such, the whole process seems out of control when I run into problems (like the render error in the MenuModder player). I’d like to have a little understanding of, and control over, what my system is using.

For example, GSpot reports a certain decoding path used for VOB files. I assume that describes the internal assignments used by WMP and WMP-based players (true??). I don’t know if the same path is used by other video players, or if they use their own internal routines. By extension, I don’t know what software will be affected if I install an MPEG2 codec pack (just the WMP-based players, or other players as well ??). I also don’t know how to maintain control of the codec assignments when I install new software, or update software, that presumptuously inserts its own codecs. :confused: As you can see, I may hold the world’s record for "things I don’t know".

Request:
Can someone point to good intermediate-level descriptions of how video codecs get assigned to, and used by, the video software normally in a Windows computer? (For now, my interest is with DVD files.) Also, a discussion of tools to observe and control the codec assignments would be nice. (Note: Forums are OK, but they’re confusing for a newbie to plow through --> tutorials or articles would be much better.)

Thanks for any info.
Paul
 
I'm was very new to this area also and would also like to learn more than what I know nowbut just haven't looked. I've learnt more through trial and error which is always more fun for me :D

I think you are correct as GSpot will report which codecs windows will use

I'm pretty sure if you use DirectShow then it uses the appropiate filters with the highest assigned Merit values in that field. You can change these values and it will change which filters are used. A program called Filter Manager let's you do this but others also do

Zoomplayer (great player) gives you options to use the default codecs or adjust the settings also if you look in the options

players like PowerDVD/WinDVD create their own 'filter graphs' and use their own filters to playback the video instead of using the ones WMP uses. Sometimes when you install players like these they also assign I high Merit value so WMP also uses that codec if used

I'm probably talking crap but maybe someone can clean my crap up and make it smell of roses ;)
 

pak2

New member
Amerzone --> Thanks for the link, it’s a good resource. There is a similar tutorial on the Radlight.net forum. Note that both the Zoom Player and the RadLight player bypass the whole codec merit morass by having the ability to define their own filter preferences to be used internally. That's good, if you have that choice.

MackemX --> I think your description is about right, from what I read. That's what makes it such a problem. With vendor software jostling for position, and not knowing what will be affected, there may not be a way to keep it all stable. It would be nice to be able to diagnose and repair problems in a more systematic way.

Yes, you can dive into the shared settings and change merits, or unregister codecs. But, as I personally verified today, you can easily break your system. Next, I think I'll try randomly downloading mass quantities of codecs. (Dirty Harry's thoughts on the subject --> “…you’ve got to ask yourself a question. -- Do I feel lucky? Well, do ya, punk?! “)

Paul
 
pak2 said:
MackemX --> Yes, you can dive into the shared settings and change merits, or unregister codecs. But, as I personally verified today, you can easily break your system. Next, I think I'll try randomly downloading mass quantities of codecs. (Dirty Harry's thoughts on the subject --> “…you’ve got to ask yourself a question. -- Do I feel lucky? Well, do ya, punk?! “)
I always feel lucky :D

my typical order
  • play with it
  • break it
  • try to fix it
  • still broken then read guides or instructions
isn't that how it works anyway :p
 
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