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I'm not having that trouble on a Windows machine. I have a variety of container types including .MTS, .MOV and .MP4. Each of those can have a variety of codecs that may or may not work with Lightroom. With what little you've provided, I will guess that you may need to do a reinstallation, you may need to reset you Lightroom preferences or your MP4 has an unsupported codec in it.
What operating system are you using? What is the source of your MP4? Can you use the (free) MediaInfo program to post the "tree view" contents of your MP4 file?
I am having the same issue with MOV files from my Nikon D600. I can't open them in the Loupe view - Lightroom Classic locks up and crashes. It also won't include the video clips in Slideshows. I am using a PC with Windows 10. And I recently updated to Lightroom Classic version 11.0. However, I have never been able to open video files in Lightroom Classic nor my original Lightroom version 6. I would appreciate any help with this.
Hi, Thanks for reporting this. We are not able to see this issue on Win or Mac. Could you please share the Video file with which you are facing this issue ? Or is it happening with all Video files ? Also do share your system information, by going to HELP -> SYSTEM INFO...
Yes every exisiting video file that I have imported. My video file is more than 47 mb, how do I share it to you?
Below is the system info
Lightroom Classic version: 11.0 [ 202110120910-0bccc70d ] License: Creative Cloud Language setting: en-TH Operating system: Mac OS 10 Version: 10.15.7 [19H1519] Application architecture: x64 Logical processor count: 4 Processor speed: 2.9GHz SqLite Version: 3.36.0 Built-in memory: 16,384.0 MB Real memory available to Lightroom: 16,384.0 MB Real memory used by Lightroom: 1,757.1 MB (10.7%) Virtual memory used by Lightroom: 27,547.3 MB Memory cache size: 85.7MB Internal Camera Raw version: 14.0 [ 950 ] Maximum thread count used by Camera Raw: 3 Camera Raw SIMD optimization: SSE2,AVX Camera Raw virtual memory: 167MB / 8191MB (2%) Camera Raw real memory: 169MB / 16384MB (1%) Displays: 1) 2560x1440
Same problem here. Older Mac from 2012, lates OS and latest Lightroom classic. LR crashes immediately when opening any video file, old from eg 2004 to latest Xmas videos.
Same problem here, LR crashes immediately when opening any video file. Works as expected on M1 MacBook Air/Monteray. Bombs instantly everytime on 2012 iMac/Catalina.
Followed suggest troubleshooting actions here, no difference