Troubleshooting

Media not shown: HEIF, MOV…

Some formats might not be supported in your browser. This is particularly unfortunate for the JXL format, which appears superior. However, it is kept restrained by Google, who pushes WebP instead.

Another issue arises from the patent mess surrounding x265: HEIF, HEVC. You might have luck with a less common browser that supports these formats.

If you encounter difficulties with MOV, specifying the right codec might help.

See also sli-fallback to auto-load a pre-converted alternative when a format fails to decode; slidershow-builder can produce those conversions for a whole media tree.