Comments

MPM wrote on 11/8/2009, 11:10 AM
Far as I know Flash (video or scripted) FPS is up to you & the site where it'll be shown. Most is around 12 - 15. RE: 29.97 vs. 30, IMHO go 30 if for no other reason than the web isn't NTSC. ;-)
John_Cline wrote on 11/8/2009, 11:41 AM
If the project is 29.97, then use 29.97 (or 14.985 if you want to use a lower bitrate but still have a fairly decent image quality at the expense of some motion smoothness.)
Soniclight wrote on 11/8/2009, 12:36 PM
Thanks for replies.

I think I'll stick to my usual m.o. with my On2 Flix 8 -- unless someone has a better suggestion --- since I often use subtle sparkly ParticleIllusion effects and music needs to be crisp. Since I use my own player online, I found a nice not-to-small-not-too-big size for publishing a 1440 x 1080 @ 1.33 pixels Project in Flash -- 533 x 300:

-- Once ready, I render out in Sony YUV at 960 x 540 (saves drive space :)
-- Convert to Flash at 533 x 300, 29.97, 192 Hz audio.

Comes out nice for Flash, IMO.

John_Cline wrote on 11/8/2009, 3:36 PM
The codec and bitrate have a lot to do with it as well.

You don't want to be using an image size of 533x300 and here's why: Codecs compress using macroblocks of x number of pixels by x number of pixels. The VP6 codec in On2 Flix 8 uses 16x16 macroblocks, so to get the best image quality and compression, you should be using image dimensions which are evenly divisible by 16 both horizontally and vertically. Neither 533 nor 300 fit that criteria.

I believe Windows Media is 8x8 and h.264 might be 4x4 macroblocks. I'd have to look it up. Regardless, you should never use odd values for image dimensions, like 533 for example.



Your best bet would be to use 512x288 from Table 2 and the Best (16) column.

For more, read this:

http://www.on2.com/blog/2009/02/vp6-video-encoding-tips/
Soniclight wrote on 11/8/2009, 7:14 PM
OK, thanks, John. My mind would blur when reading posts on this kind of under-the-hood stuff by you and your informed ilk, but I'd better pay attention this time :)

In short, most useful info = save and study.
musicvid10 wrote on 11/8/2009, 7:44 PM
"h.264 might be 4x4 macroblocks."

As an emerging technology, the h.264 spec includes down to 4x4 macroblocks, but currently only a few encoders even support high profile 8x8, and I know of none actually available to us peons that support high profile 4x4.

Certainly if one wanted widest compatibility (with Quicktime, for instance), would stick with Main profile 16x16, and for best results stick with those multiples when encoding.

Here is my own chart for "Widescreen" SAR using some common vertical resolutions, which I based on a 9:5 aspect ratio, (very friendly mathematically, and within 1% horizontal of "true" 16:9)

1280x720 (true 16:9)