Movie editing tips - DIVX / WMV
I've spent hundreds of hours editing movies so here's some advice in the hope that online video quality will improve!
Huffy is very good for temporary storage, almost equal to lossless jpg in best (slightly lossy) YUY2 mode
The problem with WMV is it is in the clutches of Micro$oft, and you can't do as much with it. They like to threaten people who try to play or edit their files without permission, which I don't like. You can't edit it with many popular programs like VirtualDub. I generally edit all the movies I get because they have lighting or size problems, and with WMV, you're stuck with M$ tools or in some cases, nothing. I like keeping control of my movies, and I don't like a big greedy slimy smelly drooling corporation limiting what I can do with them.
You can get the best quality out of DIVX4 by using "1 Pass QUALITY based" not standard 1 Pass. I think there is a misconception that quality-based produces larger files - this is not the case. The difference is constant quality vs constant bitrate. Standard essentially lets quality fluctuate for the sake of a semi-constant bitrate, which is kinda pointless unless you are doing live broadcasts IMHO. I prefer to download whole videos then watch them, and in that case constant quality is important and constant bitrate is N/A.
I recommend a minimum quality of 75%, good quality at 85% and best around 95% - above that gets very expensive.
One interesting thing about DIVX is that you can make HIGHER RES video without a massive increase in size. 640x480 looks great, and 480x360 is a good compromise vs 320x240.
You can get an excellent quality/size ratio with DIVX4, especially if you use VirtualDub filters like 2D Cleaner, Smart Smoother HQ, Dynamic Noise Reduction, & PicFix
I have gotten the following data rates (KiloBytes per frame) by screwing around with filters, resolution, & DIVX:
640x480 mid quality
night low motion: 7-9
day low motion: 12-15
day high motion: 19-28
480x360 low quality
night low motion: 1.3-2.5
day high motion: 2.3-4.0
480x360 mid quality Robin Hood cartoon: 3.5 (enlarged from 360x240 + 2D cleaner + warp sharp)
The Magic Kingdom Fireworks footage that just appeared on WDWMagic is 480x360 running at mega-compressed 1.3kb/frame including audio (fits 2:30 into 5.5meg) and it still looks better than most firework footage I've seen online. It really only has nitpicky differences from the 32meg 640x480 DIVX archive.
If you are doing your own capture, I recommend you always do the following:
1. Capture at very high quality and reduce later if neccessary. I keep a very high quality archive copy, and make reduced versions for sending to people online.
2. If you don't capture with VirtualDub, at least edit with VirtualDub. The following refers to VD filters:
3. Use Smart Deinterlace (with Frame-And-Field, Cubic, Motion Map Denoising, Threshold 5) (low motion video is better with Threshold 15)
4. Adjust Levels (almost always), and sharpness via Hue (if neccessary)
5. Apply 2D Cleaner or Smart Smoother HQ to reduce noise and file size. Always zoom in to make sure you're not overdoing it.
6. Apply Dynamic Noise Reduction (Threshold 4-8, higher for low motion video)
7. Compress your audio with MP3! You can save a massive amount of space vs PCM. I usually use 56K 22khz stereo/32K 22khz mono
8. Compress video with DIVX4, "1 Pass QUALITY based", 75% - 95%
9. Dance with joy at your beautiful video (optional)