QLVideo overrides Finder preview behavior for .ts files about qlvideo

[Marginal]

I can reproduce this, thanks. @Kagami appears correct that the problem only affects MEGTS containers with AAC audio.
These files will preview correctly in the next release.

[Kagami]

What audio codec is that? I quickly checked with some .TS files I have, it seems native Quick Look doesn't like AAC audio in MPEG-TS. Combinations of MPEG-2/H.264/AC3/MP2 seem to be working fine.

[Marginal]

In most Finder contexts (e.g. File → Quick Look, File → Get Info, Gallery View etc) and for most filetypes (including .ts) QLVideo hands off to the macOS built-in previewer if AVFoundation says that it can play the file. So if installing QLVideo makes the file unplayable in these contexts, then the built-in previewer (which uses AVFoundation) can play the file even though AVFoundation says that it can't. Which is weird. Or maybe my code that checks for playability is broken.

@glottisfaun0000 Please paste the full ffprobe output. Is this file available anywhere on the net?

For icons in the Finder window since Catalina(?) QLVideo can no longer hand off to the built-in previewer, so you never get playable icons when QLVideo is installed. I can't workaround or add an option for this.

[glottisfaun0000]

here's the ffprobe output of a Twitch.tv livestream from streamlink which QLVideo shows as a thumbnail but can be fully previwed through Finder.

ffprobe output.ts
ffprobe version 6.0 Copyright (c) 2007-2023 the FFmpeg developers
  built with Apple clang version 15.0.0 (clang-1500.0.40.1)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/6.0-with-options_4 --enable-shared --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-gpl --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-demuxer=dash --enable-opencl --enable-audiotoolbox --enable-videotoolbox --enable-neon --disable-htmlpages --enable-chromaprint
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
Input #0, mpegts, from 'output.ts':
  Duration: 00:01:44.08, start: 32015.782000, bitrate: 6415 kb/s
  Program 1
  Stream #0:0[0x100]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 163 kb/s
  Stream #0:1[0x101]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 90k tbn
  Stream #0:2[0x102]: Data: timed_id3 (ID3  / 0x203344

[Kagami]

Audio: aac (LC)

Yeah, I experience the same. Test some .TS with AC3/MP2 audio.
QuickTime plays .TS with AAC just fine though. Only related to QuickLook.

But I haven't tested whether such files are working without QLVideo at all.