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Lightroom Classic 9.2.1 Mac Doesn't Play Videos

Medium Priority
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Last Modified: 2020-06-04
For no known reason, Videos that were imported into Lightroom Classic for Mac and that USED TO play now longer do so.

Here's an example:
Sample of Two Videos in the Catalog
I double-click on one , and I get a blank player window
Blank player in Lightroom

Sometimes I'll see just a flash of the video.

When I try and purge the Video cache, Lightroom just hangs, and I have to Force Quit.
I moved the Video cache, with the hope that this would help, but there is no change.

If I open the file in the Finder, and double-click, QuickTime Player will play the video.

Any idea why Lightroom Classic isn't playing these videos anymore?

Thanks.
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Fractional CTO
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Distinguished Expert 2019
Commented:
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Commented:
Here's what I get:

Kathryns-iMac-Pro-2:~ kathryn$ /Users/kathryn/Downloads/ffmpeg-2 ; exit;
ffmpeg version 4.2.3-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'
logout
David FavorFractional CTO
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
The command to use is...

ffmpeg -i $your-file-name-here

Open in new window


Also be sure to mention what's changed on your system.

Rarely do systems just start behaving differently. Usually some change precipitates behavioral changes.

Author

Commented:

Kathryns-iMac-Pro-2:~ kathryn$ /Users/kathryn/Downloads/ffmpeg -i /Volumes/KWRaid\ 20T/D65_BEST/lightroom_database/\[VIDEOS\]/IMG_0226.mov 
ffmpeg version N-98023-g0842fd2c25-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 49.100 / 56. 49.100
  libavcodec     58. 90.100 / 58. 90.100
  libavformat    58. 44.100 / 58. 44.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 84.100 /  7. 84.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/KWRaid 20T/D65_BEST/lightroom_database/[VIDEOS]/IMG_0226.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2012-08-23T02:33:29.000000Z
    make            : Apple
    make-eng        : Apple
    encoder         : 5.1
    encoder-eng     : 5.1
    date            : 2012-08-22T22:29:37-0400
    date-eng        : 2012-08-22T22:29:37-0400
    model           : iPhone 4S
    model-eng       : iPhone 4S
    com.apple.quicktime.make: Apple
    com.apple.quicktime.creationdate: 2012-08-22T22:29:37-0400
    com.apple.quicktime.software: 5.1
    com.apple.quicktime.model: iPhone 4S
  Duration: 00:03:17.47, start: 0.000000, bitrate: 42 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 23 kb/s (default)
    Metadata:
      creation_time   : 2012-08-23T02:33:29.000000Z
      handler_name    : Core Media Audio
    Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 192x108, 17 kb/s, 15 fps, 15 tbr, 600 tbn, 1200 tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2012-08-23T02:33:29.000000Z
      handler_name    : Core Media Video
      encoder         : H.264
    Side data:
      displaymatrix: rotation of -90.00 degrees
At least one output file must be specified
David FavorFractional CTO
CERTIFIED EXPERT
Distinguished Expert 2019

Commented:
My guess is the rotation metadata in combination with the .mov container is causing Lightroom to lose it's mind.

Try this.

Run ffmpeg, doing whatever rotation you require, exporting to a rotated video inside a .mp4 container.

This will drop the rotation metadata.

https://www.ostechnix.com/how-to-rotate-videos-using-ffmpeg-from-commandline/ provides a good overview of various video rotation approaches.
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