P: LrC 15.5 Video Files Issues (Windows)

Forum|Forum|1 month ago
August 5, 2026
125 replies
3081 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?

DonRoberto

Participant

Same issue with a video taken with Canon EOS R6 Mk II FHD in MP4 format. Video is not imported due to unknown error, tried several things supposed by Google AI like rename to MTS or MOV, reformat with shutter encoder. Nothing helped, Size 33GB, lenght about 1.35 hrs. LrC 15.5.1. Windows 11 Pro 26H2. Graphics Nvidia RTX 4060 TI,latest driver.

J

james thunder

Participating Frequently

Same problem here. Videos play fine on Windows but Lightroom can’t import them. This used to work. Still broke in 15.6.

Kellsie

Participant

I just updated to 15.6 and the issue persists. Back to 15.4 for me.

S

stefanh1741491

Participant

Confirming this issue in Lightroom Classic 15.6 (Windows 11).

- Videos: HEVC (H.265) .mp4 files from Pixel 6a and Pixel 10 Pro
- Import fails with "An unknown error occurred while reading the video file" (14 files affected)
- The files play fine in Windows, and they imported fine in earlier versions
- Remuxing the files from hvc1 to hev1 with ffmpeg (-c copy -tag:v hev1) does not help
- After downgrading to 15.4.1, the same files import without problems

So this looks like a regression in HEVC video handling introduced in 15.5 and still present in 15.6.

M

M31880101dggl

Participant

Bug is still present in Lightroom 15.6...

D

DannyOsh

Participant

LRC 15.6 updated today and STILL video is not working.

To clarify, some video files now work. But not the H265 files created by my Galaxy S24. If I convert those files to H264 they will import and play in LRC 15.6.

But these same files used to import and play just fine in 15.4.1.

C

Corneliussens

Participating Frequently

I can confirm that the problem still exits in 15.6

johnrellis

Legend

Moderators, @Sameer K, please merge with the existing bug report:

https://community.adobe.com/bug-reports-674/p-lrc-15-5-video-files-issues-windows-1635342/index1.html

johnrellis

Legend

[View this post in your web browser. It contains formatting and images that don't appear in email.]

Adobe has acknowledged this bug introduced into Windows LR 15.5:

https://community.adobe.com/bug-reports-674/p-lrc-15-5-video-files-issues-windows-1635342/index1.html?sort=oldestFirst#comments

While waiting for a fix from Adobe, the only known workaround is to roll back to LR 15.4.

C

Corneliussens

Participating Frequently

Same problem,

System & Hardware Setup:

OS: Windows 11 (fully updated)
Lightroom Classic Version: 15.5.1
Processor / GPU: AMD Ryzen 5 5600G with integrated Radeon Vega 7 Graphics (No dedicated GPU installed)
Media Details: .mov files fail both on import and playback within Lightroom, but play back perfectly fine using native Windows media players and VLC.

Description of the Problem: Since updating to Lightroom Classic v15.5.x, I am unable to import certain .mov files. For previously imported .mov files, Lightroom throws the error message: "There was an error working with the video".

Because these exact files play without any issue in Windows Media Player and external players, the operating system and hardware decoders are fully capable of reading them. This points directly to a regression or compatibility bug in Lightroom Classic’s internal video rendering/import pipeline on Windows 11 systems running on integrated graphics.

Troubleshooting Steps Already Attempted (All Failed to Resolve the Issue):

Codec Installation: Installed official HEIF/HEVC Video Extensions from the Microsoft Store and restarted the PC.
GPU / Performance Settings: Verified and tested with Graphics Processor disabled, as well as forcing Lightroom Classic via Windows Graphics Settings to run under the "High Performance" profile utilizing the AMD Vega integrated graphics.
Driver Updates: Clean-installed the absolute newest AMD Software: Adrenalin Edition driver for the Ryzen 5 5600G.
Cache Maintenance: Cleared both the Camera Raw Cache and the Video Cache within Lightroom preferences.
Preferences Reset: Performed a complete preferences reset (Shift + Alt launch) to clear out any corrupted post-update configuration files.

C

Corneliussens

Participating Frequently

I have just tried in the newly released 15.6. Same problem. Does anyone have this working? Is my integrated GPU the problem?

C

Corneliussens

Participating Frequently

Issue Title: Lightroom Classic v15.5.1: `.mov` import failure and "There was an error working with the video" playback error on Windows 11 (AMD Ryzen 5600G)

System & Hardware Setup:

OS: Windows 11 (fully updated)
Lightroom Classic Version: 15.5.1
Processor / GPU: AMD Ryzen 5 5600G with integrated Radeon Vega 7 Graphics (No dedicated GPU installed)
Media Details: .mov files fail both on import and playback within Lightroom, but play back perfectly fine using native Windows media players and VLC. Also previously imported .mov files, which worked previously in Lightroom Classic is now failing to play.

Description of the Problem: Since updating to Lightroom Classic v15.5.x, I am unable to import certain .mov files. For previously imported .mov files, Lightroom throws the error message: "There was an error working with the video".

Because these exact files play without any issue in Windows Media Player and external players, the operating system and hardware decoders are fully capable of reading them. This points directly to a regression or compatibility bug in Lightroom Classic’s internal video rendering/import pipeline on Windows 11 systems running on integrated graphics.

Troubleshooting Steps Already Attempted (All Failed to Resolve the Issue):

Codec Installation: Installed official HEIF/HEVC Video Extensions from the Microsoft Store and restarted the PC.
GPU / Performance Settings: Verified and tested with Graphics Processor disabled, as well as forcing Lightroom Classic via Windows Graphics Settings to run under the "High Performance" profile utilizing the AMD Vega integrated graphics.
Driver Updates: Clean-installed the absolute newest AMD Software: Adrenalin Edition driver for the Ryzen 5 5600G.
Cache Maintenance: Cleared both the Camera Raw Cache and the Video Cache within Lightroom preferences.
Preferences Reset: Performed a complete preferences reset (Shift + Alt launch) to clear out any corrupted post-update configuration files.

C

Corneliussens

Participating Frequently

I have just tried in the newly released 15.6. Same problem.

Show more replies

System & Hardware Setup:

Issue Title: Lightroom Classic v15.5.1: .mov import failure and "There was an error working with the video" playback error on Windows 11 (AMD Ryzen 5600G)

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Issue Title: Lightroom Classic v15.5.1: `.mov` import failure and "There was an error working with the video" playback error on Windows 11 (AMD Ryzen 5600G)