Emily Bowman

> Why not just use the openjpeg2 library (or jasper) to write jp2/j2k containers (those are ISO BMFF as well by definition)? Because that's not HEIF. The standard ISO approved...

Have you done `dnf install libpng-devel`? (Or `yum install libpng-devel` if CentOS 7 hadn't switched to dnf yet.) You'll need pthread library as well, which is part of glibc-devel package...

Something's funky with your build environment then, since 15 is the libpng supplied with CentOS 7. Hm. What is the result of `ls /usr/lib64/libpng*`? libpng15.so.15.something should appear there. If it...

> > > > Fantastic, could you please point to your repository? > > I will upload it, as soon as the core features are ready. One or two weeks...

You don't need to add slashes to escape the main command-line, av1an deals with ffmpeg's filter insanity internally now. The problem you're having is that --vmaf-path needs the pointer to...

Speex, theora, and vorbis are all ancient legacy tech that isn't going to see any investment beyond security updates, or a corporate sponsorship by some entity invested in their improvement....

As far as I can tell, if there are any transforms beyond a simple crop, you basically have to run the entire compositing engine anyway to obtain the final canvas...

It's all calculable from the metadata alone, so the full thing doesn't have to be parsed. If there are no derived images, then just start at the ispe box, and...

Admittedly it would have been nice if *all* images had to end up in with an auxC box, even if composed of just one source image with no transforms. That...

Someone else may need to prepare a full release (updating files with new versions, dependencies, etc) and submit it as a pull request before a release happens; it might be...