If I just applied 4 color gradient to the solid the file size would jump up dramatically. That is why the animated blue solid file size is so small.
There is no way around the architecture without compressing colors. Your 16-bit originals will be compressed all the way down to 8 bits or even less if you use any of those tools. Any PNG compressor that reduces file size will compress the colors. It looks like a lot better solution to me. I don't know for sure but it looks like Blink video converter (compressor) would handle GoPro Cineform without any problems and you could include audio. You'll need TIFF or other image formats if you want 32.
#Apng file size reducer movie
So Cineform is less than half the file size and renders in less than half the time but it is only a 10-bit movie but it does include an Alpha channel. Free online Compressor to reduce APNG files size with one click - compress and optimize APNG file without losing quality. Here's what a 10 frame render of the desert scene looks like using Cineform and it renders in about half the time as a PNG sequence. GoPro Cineform supports alpha channels and 10-bit color and the file sizes are about as small as you can get for this kind of project. Other image formats can give you a little smaller file sizes and retain high quality, but the difference is not going to allow you to store twice as much footage on your drives and the render time may outweigh the little money you would save buying more storage. If you want visually lossless files that are 10-bit or better, you're stuck with large file sizes. Select output file size or quality to get the best compression and quality. Imagine how much larger a file of an actor with long blond hair blowing in the wind that was expertly keyed out in AE could be, just from the complex alpha channel date. Online PNG compressor lets you reduce PNG image size for free. Just that tiny bit of transparency from the motion blur added 3 KB in 10 frames. This is what happens to the file size when you turn on Motion Blur. The second is 10 frames of an HD blue solid moving halfway across the frame with an alpha channel and no motion blur. That is 10 HD frames of this desert scene and it's 108.2 MB Take a look at the difference between these two reports on 10 PNG images rendered in a sequence from After Effects: There are no different compression options for PNG files that will significantly change the file size.
8-Bit PNG files are smaller but you lose a lot of color information. Alpha channels add additional file size because there is an additional color channel with up to Trillions of colors. Big areas of solid color reduce file size. If there is a lot of detail, they are going to be larger. The usage of 3 compressors does increase the time taken to compress the PNG files but definitely yields a smaller file size.
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