Help with Divx motion

[doncaruana]

I'm hoping someone can help me out with motion issues on my divx files. I have a portable MG-25 mpeg player and I'm trying to compress my DVDs to fit on it for maximum storage. The problem I'm having is that when I play my standard Divx encodes (1200Kbps, single or multipass) or even a standard xvid, I get a lot of motion deinterlacing and jumpiness. When I play the same video on a beefier machine (my xbox, DVD player, etc) I don't get that problem.

At first I was just disappointed in my player then I got one that someone else encoded (divx) and played it on the same player and had no issues.

So, after that long setup, what I'm trying to figure out is what settings can I use to get a decent quality video at a high compression rate without the motion issues? (Asking a lot, huh?)

With a lot of experimenting so far, the best results (I'm using Tmpgenc Xpress 4) were with Divx and setting the performance to "Best Quality" and the High/Low motion slider to 0 (it's .18 by default) with 2 passes at 1200Kb/s. But this took forever (although some of it was in the background).

Anyway, to give an idea, a normal movie (these are mainly our Disney collection, so they're about 70-80 minutes long), will do a one pass divx on my machine in about an hour. A higher quality 2 pass might take 4 hours, depending on how I tweak it. And the one above took 9 hours! (AMD FX-55, 1GB , SATA HDD with plenty of space). I didn't think my mahcine was underpowered - but I can't figure out what other people are doing - do they know the right settings or are they really going through these long encodes?

So, if anyone has any decent suggestions, they would be greatly appreciated.

Thanks,
Don

[Jay Bee]

I'm guessing your problem is that you are trying to watch an interlaced file on a player with a progressive display that doesn't know how to deinterlace the video. So you'll have to do the deinterlacing yourself, before you do the encoding. Which deinterlacer to use depends largely on the source (film or video), the capabilities of your player (max framerate?) and you time (mvbob can be less than 1 fps).

[doncaruana]

Thanks for the reply but I don't think that's it. Like I said, I can take the same source and same target and change how it displays by encoding it slightly different. Essentially, when I crank up the motion sensitivity, it will play fine. So I don't think this is an interlacing issue. All I'm trying to understand is what are the recommended/optimum settings people use to do divx (or even xvid) encodes to get past the motion issues.

[doncaruana]

A little word to Jay Bee...although the circumstances didn't exactly fit, your post did send me down what appears to be the right path...

It appears as if the source has a great deal to do with how my stuff ends up looking on this portable player. Bottom line is that what I ended up doing is setting the frame rate 23.976 (these are film->dvd encodes) and setting a few other options as well. I set up adaptive single encoding, set the keyframe interval to 240 changed the quantization to h.263 optimized and put "performance" to excellent (one notch down from the top).

What I ended up with was a great encode that was the same size that had none of the issues I mentioned before. I'm still tweaking but I think I've got my answer. One thing I'll look at more closely in the future is the source and I'll also look a little closer at live action vs animation (this is all animation so far).

Don

[Jay Bee]

Ah Ok, sounds like interlacing wasn't the issue. Glad you got it working.