P: LrC 15.5 Video Files Issues (Windows)

Forum|Forum|9 days ago
August 5, 2026
28 replies
481 views

I updated to LrC 15.5 a few hours ago. Since then LrC has problems with video files. The first problem I noticed was that when I tried to synchronize a folder that had two new video files. After a couple of minutes I got the error message “An unknown error occurred while reading the video file. (2)”. I had just completed those files with DaVinci Resolve so I went back and produced the same files again to check if DR had made an error. When I tried again with the new files but got the same errors. I was able to play both videos without any issue using VLC Media Player, so they seem to be OK. I then shutdown LrC and did a backup including optimizing the catalog, and then restarted it to see if that made any difference, but same error. Then I started looking at other videos that were already in LrC and found that when browsing them in the Library module, most of them pop up a message “There was an error working with the video”. They will not play in LrC but work fine with VLC Media Player.

Prior to upgrading to 15.5 I did not experience any of these errors. Is anyone else seeing these problems?

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Robert21934888ntns

Participant

Same here. I upgraded today to 15.5, unfortunately before reading this thread.

Every video I have in my library returns the error “There was an error working with the video”. Each of those videos can be played back using different software.

Platform: Windows 11, NVIDIA 4070Ti Super

Would be nice to get this fixed asap.

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hugh.letheren

Inspiring

It was irritating to discover this issue. Lodged a help call - helpful guy but he did not know what the problem was and it took at least half an hour of trying thins until he tried the roll back - which is fine but means I cannot try out the new masking sliders - a great step forward I would like to use!

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hugh.letheren

Inspiring

Attempting to import a UHD video, produces an error message suggesting the file is corrupt. Attempting to review an older imported UHD video produces an error message, suggesting an unkown error.

Windows 11 and Invidia graphics RTX 3050 (8GB) Intel(R) Core(TM) i9-10900X CPU @ 3.70GHz (3.70 GHz)

masonreed

Participating Frequently

Sounds like a 15.5 bug rather than a problem with your video files, especially since VLC plays them fine and older videos stopped working too. try disabling GPU acceleration and, if that doesn’t help, roll back to 15.4 until Adobe addresses it.

DClark064Author

Unfortunately this is another example of the poor support for video files in LrC. It seems that Adobe has difficulty with newer video codecs, even though every other video app I have plays everything without problems. Being able to manage video digital assets and play video regardless of codec seems to be a low bar that is cleared by lots of other apps, but Adobe LrC seems to have problems. I assume this is more a lack of interest and commitment than it is a technical challenge.

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ren072

Participant

I also have this video issue with Lightroom 15.5.
Only videos recorded with smartphones in HEVC can’t be played.
Videos recorded in AVC work well.

DClark064Author

This should be moved from Questions to Bug Reports.

Ian Lyons

Community Expert

I’ll leave moving the thread to @Rikk Flohr_Photography

In the meantime, the issue along with a link to this thread and others elsewhere has been logged in the internal bug reporting system.

Kellsie

Participant

Do you have a link to the issue in the bug reporting system? I’d like to follow the bug instead of this thread.

ColdForest

Inspiring

Same issue for me w/LrC v15.5 on Win11. Tried several of the suggestions but all previously playable video files no longer play (and new syncs fail). Attempting to resynchronize folders w/video files present the standard “An unknown error occurred while reading the video file (1)”. Win Media Player of course plays these files fine.

Ian Lyons

Community Expert

You may be experiencing the same or related issue under discussion at

As you’ve already established, rolling back to 15.4.1 appears to be the workaround until the issue is fixed.

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default249h1fl4666q

Participant

I am experiencing the same issue with videos after the 15.5 update. How does one roll back to a previous version?

Anthony Kaduck

D

default249h1fl4666q

Participant

BTW I’m a real person, Not sure why the username comes out as default…..

Anthony Kaduck

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davidc63318946

Participant

Want to use HEVC because videos are about half size of AVC with no noticeable reduction in quality. Haven’t chosen HEIF pictures because of Samsung warning. Both AVC and HEVC load and play in 15.4.1 but HEVC fails in 15.5. Will stick to 15.4.1 until a fix or explanation is provided.

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Axel252863546854

Participant

it is a problem of LrC 15.5. Video which are already imported are working in 15.5. Only new importing is not possible, “unknown error”. After downgrade to 15.4.1, import of the sdame videos was possible.

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