[ERROR][Ubuntu 20.04] SKCodec had an error reading /var/lib/emby/cache

[bastionntb 20]

Ubuntu 20.04.4 LTS
Emby: 4.7.2.0

I'm having an intermittent issue on metadata refresh and TV Show/Movie viewing on Emby Server where Emby will not generate a poster for said movie/TV Show, and have a blank image instead

 

In the log is says this when I initiated a metadata refresh replacing images. (This was one of a few probably around ~15% of my library gets this error)

2022-06-05 20:27:33.873 Error ImageProcessor: Error encoding image

    *** Error Report ***

    Version: 4.7.2.0

    Command line: /opt/emby-server/system/EmbyServer.dll -programdata /var/lib/emby -ffdetect /opt/emby-server/bin/ffdetect -ffmpeg /opt/emby-server/bin/ffmpeg -ffprobe /opt/emby-server/bin/ffprobe -restartexitcode 3 -updatepackage emby-server-deb_{version}_amd64.deb

    Operating system: Linux version 5.4.0-113-generic (buildd@lcy02-amd64-067) (gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)) #127-Ubuntu SMP Wed May 18 14:30:56 UTC 2

    Framework: .NET 6.0.2

    OS/Process: x64/x64

    Runtime: opt/emby-server/system/System.Private.CoreLib.dll

    Processor count: 8

    Data path: /var/lib/emby

    Application path: /opt/emby-server/system

    System.Exception: System.Exception: SKCodec had an error reading /var/lib/emby/cache/images/enhanced-images/2/2e08e32ab114c9b40cd22e77a1b17683.png

       at Emby.Drawing.Skia.SkiaEncoder.EncodeImage(String inputPath, String outputPath, Boolean autoOrient, Nullable`1 orientation, Int32 quality, ImageProcessingOptions options, ImageFormat selectedOutputFormat)

       at Emby.Drawing.ImageProcessor.ProcessImage(ImageProcessingOptions options, CancellationToken cancellationToken)

    Source: Emby.Drawing.Skia

    TargetSite: System.String EncodeImage(System.String, System.String, Boolean, System.Nullable`1[MediaBrowser.Model.Drawing.ImageOrientation], Int32, MediaBrowser.Controller.Drawing.ImageProcessingOptions, MediaBrowser.Model.Drawing.ImageFormat)

   

 

The permissions on this specific file are rw-rw-r-- (664) with ownership of the service account that runs Emby, and the group it belongs too.

 

The entire folder and all subdirectories are also owned in the same way, with similar permissive permissions applied. No ACLs are applied, just simple unix permissions.

 

These effect files are 0KB in size and there are hundreds of these issues propagated throughout the entirety of my libraries.

 

Refreshing Metadata and replacing existing images basically scrambles the affected files around, where one may not have had an issue one time, the other one now does have the issue.

 

Thank you

[Luke 42077]

HI there, can you please attach the complete emby server log? Thanks.

[bastionntb 20]

I think I found the problem. It appears that the images would generate this error in correlation to a DNS timeout. (e.g. timestamped error on those files would correlate to a DNS query on our upstream DNS server)

 

I fixed the DNS problems and it seems there have been no errors since.

 

Thank you!