AVIF image format is a new emerging format to contain AV1 images (like HEIF for HEVC/H.265). The spec. of AVIF format . Notice that AVIF format is based on AV1 intra encoded images.
Recently it was declared that Safari 16.0 for iOS 16 supported AVIF image format.
In the recent version of ffmpeg (ffmpeg version 2022-10-20, you can take it from https://www.gyan.dev/ffmpeg/builds/, the file ffmpeg-git-full.7z ) the AVIF format is already supported, example of still picture re-encoding:
ffmpeg -i baboon.jpg -c:v libaom-av1 -still-picture 1 -y baboon.avif
According to the paper “An evaluation of the next-generation image coding standard AVIF”, Nabajeet Barman et al., AVIF outperforms JPEG2000 and HEIF in SSIM BD-Rate:
Note: High Efficiency Image File Format (HEIF) is based on HEVC intra coding
23+ years’ programming and theoretical experience in the computer science fields such as video compression, media streaming and artificial intelligence (co-author of several papers and patents).
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