On Windows, there are offerings like PureVideo and AVIVO that help a lot in the process of decoding DVD and doing clever upscaling, deinterlacing and post-processing to make DVD look better than ever, especially on displays where high pq is essential, such as a 120" picture from a front projector.

On Linux, what are the choices? And how do they compare to the solutions available on Windows? The entire MythTV "platform" is very interesting, but I will not compromise the quality that I can get from DVDs. So Linux is, as far as my experience go, a no-go because there are no mature offerings when it comes to playing dvd.

Sounds like you've already made your decision, so guess there's no point in answering your question, eh?

http://www.knoppmythwiki.org/index.php? ... neDVDHowTo

even has some postprocessing screenshots.

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Xsecrets

Xine(through Myth) looks great with both my 104" Projection Setup (Infocus 4805 EDTV) and with my Hitachi 55" Plasma...both get mistaken for Hi-def with a high quality DVD.

Both are fed via DVI and interestingly the Hitachi doesn't look as good when I use the denoise and unsharp filters but the Infocus looks great.

My recorded HDTV shows look fanatastic as well!

You didn't read the "as far as mu experience go" bit, even though you quoted it, didn't you? I would like to hear about other people's experiences. And also to have confirmed that I am right or (even better) to be explained why I am wrong.

/David

I know about and have tried mplayer, xine and ffmpeg. Still, it is not PureVideo or AVIVO. Have any of you guys seen PureVideo or AVIVO and made the comparison?

/David

I did read that part, although your initial post didn't describe what those experiences were. Nor did you describe whether you'd tried any of the post-processing techniques available via xine. So it sounded like your mind was made up already.

You've obviously seen PureVideo and AVIVO and what it can do; why don't you describe what you've seen, compared to mplayer and xine since you know about and have tried them.

I find xine post-processing plenty good, as do others who've tried it (check avsforum for comments).

PS: xine post-processing is based on Dscaler. So your actual question should be "how does Dscaler compare to PureVideo?" Here is a thread where that is discussed:

http://www.firingsquad.com/news/newsart ... l=1&page=1

no and those are not available on linux, which you obviously already knew. If you have your mind set that nothing can compare to these programs then why even ask?

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Xsecrets

As far as I know, xine uses ffmpeg for post processing. It might use Dscaler for de-interlacing or may the Dscaler MPEG decoder, but either way, Dscaler or xine is not discussed at all in the article that you link to. It is a great article, especially for those who don't know the intricacies of video processing.

/David

I said thread, not article.

Reply #9 states "It has been my experience that software such as DScaler offers some very interesting algorithms, however the detection elements are sub-par but it's still nice because it's free. I think that DScaler will give PureVideo a run for its money when it comes to deinterlacing, although I expect NVIDIA to do a better job with the detection. Noise filters will give Dscaler additional points on this particular benchmark."

Still looking forward to your comparison of PureVideo/AVIVO to what you've experienced with xine.

Just wanted to document what I've found with regards to post-processing, xine, and CPU performance.

I'm using these post-proc instructions in a file in /usr/local/bin/xine-post:


xine-post was chmod'ed a+x and set in the DVD player settings

These ate up +90% CPU without any XvMC assistance. With XvMC assistance, CPU went to under 10% during playback but the DVD menus would not display propperly. I fixed this by using XxMC in /home/mythtv/.xine/config( video.driver:xxmc ).

Looks great and plays cool. Oh, using Nvidia FX 5200 driving a 19" LCD right now. Will be driving a 30" HDTV over HDMI soon.

UPDATE: corrected misspelling( mythth -> mythtv )

To use your settings to drive an interlaced tv output is it the same but with use_progressive_frames=no ?

good question and since I'm still learning all this stuff, all I can say is that I changed that setting and didn't notice a change. BTW, I also have an 1080i HDTV.

Also, I did a comparison between the output from our 2year old DVD player into one of the TV's composite inputs and playing a DVD from the knoppmyth computer into the TV's HDMI and the HDMI picture was much better. Our DVD has a "component" output and I'm going to try feeding that directly into the TV to compare those too. Since the DVD player isn't listed as being 480p, my guess is that knoppmyth over HDMI will still look better.

Interesting how that comparison hasn't come about...

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cesman

When the source is open, the possibilities are endless!