A few months ago I noticed that the video presentations on DevMo were rather unwieldy to watch… A 280 MB Quicktime download doesn’t exactly offer immediate gratification! So, I uploaded all the videos on that page to video.google.com, and today *finally* got around to editing the DevMo page to link to them. Share and Enjoy.
I considered putting them on YouTube, but the video quality there is lower and they had a size/time limit to uploads.
One more thing…
I’ve been working on a little side project for a while — an editor for creating Animated PNGs — and I see Dave let the cat out of the bag. Just as well, as I kept wanting to fix one more thing and have failed at the whole “release early, release often” thing. Boom. Andrew has a page where you can download it, and describes a bit how to use it.
I’ve also created a hacky little demo page showing some samples of APNGs. I’ve more ideas to add, as there are some clever things that APNGs should make possible.
This APNG editor is a decent start, but still needs a lot of work and polish to be a solid tool. Some things I’d like to add at some point…
- Frame reordering
- Ability to stop the animation and step forwards/backwards frame by frame
- Colormap support (for 1 to 8-bit APNGs), which should allow for smaller file sizes. I think the spec allows this, but encoder changes would be needed.
- Interframe diffing, so that video-like animations can be more efficiently encoded. I’m rather curious if the ability of APNG to do alpha blending will help out here… For example, to have an Animated GIF fade to black, each frame would have to be encoded as a full image (darkening as needed). But with an APNG, you could just overlay successive frames of semi-transparent black (which would compress very well).
- Automatic cropping and repositioning of frames with all-transparent pixels along one or more borders.
- Sandboxing of script execution, so that sharing rendering scripts would be safe. Declarative canvas and SVG integration would also be exceedingly awesome.