Having fun with HAM8 videos @ 25 FPS for 3+ minutes

[10MARC]

Hmmmm... I watched the original Youtube video, and I declare shenanigans. I have been creating and testing HAM6 and HAM8 videos for weeks now. The results are incredible considering they are playing back on Amiga's - but they don't look even similar to the originally posted video. Of course they have fringing! HAM8 does! And video playback at the 700 something by 400 something at 25 FPS is not going to happen on an unexpanded A1200. I can get reasonable results at 320x216 on an '040 or at 288x188 on slower machines.
You can actually download some of my real samples at www.10marc.com - 100% guaranteed to be free from shenanigans and playable on your Amiga!

[10MARC]

I totally agree that HAM8 videos will playback on a reasonably powerful Amiga. Even 25 FPS is possible. But that original video was not on an unexpanded A1200 for sure. There was not even one single artifact that I could see from a HAM8 video. (Atron's original video seems to not be working - I was looking at the post below his original)

Just to be clear, the videos from Atron appear to be legitimate. I am looking forward to trying out the software that he is recommending to create the videos in 256 color AGA mode. If it works well I will certainly put some of those up on my website www.10marc.com

[10MARC]

 I need to clarify my post. Atrons videos seem legit. The YouTube video Skolmon linked to is bunk. The one that claims to be playing on an unexpanded A1200.
There are incredible things that can be done with these HAM8 videos for sure. I am looking forward to trying done of the utilities in this thread to improve my videos

[10MARC]

I did another HAM6 conversion tonight with DAMAGE_X's avi4hv and avi4aga tools - And I think they turned out well. I put up a Youtube Video of the HAM8 version playing back on my A4000D with a Warp Engine and nice SCSI drives. I find the AGA at 320x216 videos are too much for the onboard IDE of the A600, A1200 and A4000, but HAM6 at 288x188 plays nice, and the HAM8 plays OK at that resolution.

The actual playback on my machine is herehttps://youtu.be/VWkmV5R-Km8 - and the actual files (both HAM6 and HAM8) are in LHA format on my website here https://www.10marc.com/p/fun-ham6-and-ham8.html

The players are linked there, too. All of my videos play back great in UAE, and they will play great on an expanded Amiga, too. They are stored on my Google Drive, so iBrowse on the Amiga can't download them. Download them in a modern browser.

[10MARC]

@Dynamic_Computing

Nicely done. Looks like atron has better tools for the conversion, because your video has definite HAM artifacting along the left edge. That's avi4hc/avi4aga's fault, unless you're cropping the HAM8 images that they produce. A better HAM6/8 encoder wouldn't generate those.

I wonder if it would be possible to come up with a better compression scheme for HAM6/8 to make streaming them from disk less taxing. There might be a way of doing motion compensation to reduce the size further beyond the basic compression CDXL and anim formats used. I'm too busy with AmigaOS 4.x graphics to try that out myself, though.

Hans

Taking a look at the tools Atron used, it appeared that he captured each individual frame and then re-assembled them on the Amiga - wow. That must have been a lot of work. I can't find the pngtoilbm tool anymore, but I only searched for it briefly. I will look more for it tonight and see if I can use it to improve my videos.
I have done some higher quality versions using different filtering on FFMPEG and different ways to extract AVI files from MP4 files, but the file sizes get so huge they are almost unusable. I am trying to strike a balance between quality and size.