Black/blank video during playback

[mifi]

For some combinations of OS, video codec and graphics card/driver (looking at you NVIDIA), the HTML5 video player (which LosslessCut uses) will simply play back audio only, and not report an error via the API, meaning we can't programmatically detect that there's a problem. Not always clear how to solve this. For some codecs we use a blacklist but it's not always complete:

lossless-cut/src/renderer/src/util/streams.ts

Line 378 in 06cae06

const chromiumSilentlyFailCodecs = ['prores', 'mpeg4', 'mpeg2video', 'tscc2', 'dvvideo', 'mjpeg', 'ffv1'];

In this issue I will gather info about such problems that occurred in the wild for future reference:

• Unable to show video encoded with 'rext' profile using NVIDIA' s NVENC #2306
• Can't work with .MOV files? #1932

See also:

• Chromium HEVC profile support by OS

Workaround

• Turn off HEVC / H265 hardware decoding.
• Use File -> Convert to supported format.