Chapter processing during task fails

Bugs / Feature Requests Bugs
1

MCEBuddy Version: 2.7.2 2026-07-24

Operating System: Win10 22H2 (19045.7548)

Summary of the problem: processing tasks fail parsing chapters in some media files

Steps to replicate the bug: depends on media file. Process a media file with the problem fails parsing chapters. See logs below. I uploaded the media file (1GB) and the log file.

Filename: The Grinder-S01E01-Pilot-MP2-720x480-AC3-5.1.mkv

Error message:

ERROR> 2026-08-07T08:57:27 MCEBuddy.Engine.ConversionJob --> Unhanded error during conversion, conversion cancelled
System.NullReferenceException: Object reference not set to an instance of an object.
   at MCEBuddy.CommercialScan.EDL.AdjustChaptersForEDLCuts(List`1 Chapters, List`1 cutList)
   at MCEBuddy.Engine.ConversionJob.Convert()

Tail of the debug log (showing the failure point) :

2026-08-07T08:57:27 MCEBuddy.CommercialScan.EDL --> EDL: Initial skip seconds adjustment 0 seconds.
INFORMATION> 2026-08-07T08:57:27 MCEBuddy.Engine.ConversionJob --> Checking for Chapter information in Source File to preserve
--> IsPlaylaterAdMarkers: No Advertisement entries found, chapters are not ad makers
ERROR> 2026-08-07T08:57:27 MCEBuddy.Engine.ConversionJob --> Unhanded error during conversion, conversion cancelled
System.NullReferenceException: Object reference not set to an instance of an object.
   at MCEBuddy.CommercialScan.EDL.AdjustChaptersForEDLCuts(List`1 Chapters, List`1 cutList)
   at MCEBuddy.Engine.ConversionJob.Convert()
INFORMATION> 2026-08-07T08:57:27 MCEBuddy.Engine.ConversionJob --> 
--> Performance Metrics for the Current Conversion
--> 

--> Working video pre-conversion duration (hh:mm:ss) -> 00:22:57
2026-08-07T08:57:27 MCEBuddy.Engine.ConversionJob --> Original file size [KB] 1,079,319.00
--> 

--> <Start At Date/Time>	<Duration (hh:mm:ss)>		<Activity>
--> <08/07/2026 08:47:06>	<00:00:00>		<Checking for disk space>
--> <08/07/2026 08:47:06>	<00:00:00>		<Running custom commands>
--> <08/07/2026 08:47:06>	<00:00:01>		<Getting show information and banner from Internet sources>
--> <08/07/2026 08:47:07>	<00:00:11>		<Running custom commands>
--> <08/07/2026 08:47:18>	<00:00:25>		<Remuxing recording>
--> <08/07/2026 08:47:43>	<00:00:00>		<Trimming video recording>
--> <08/07/2026 08:47:43>	<00:00:09>		<Analyzing video information>
--> <08/07/2026 08:47:52>	<00:00:36>		<Advertisement scan>
--> <08/07/2026 08:48:29>	<00:00:02>		<Extracting subtitles>
--> <08/07/2026 08:48:31>	<00:00:08>		<Extracting closed captions>
--> <08/07/2026 08:48:40>	<00:00:00>		<Processing chapter files>
--> <08/07/2026 08:48:40>	<00:00:00>		<Running custom commands>
--> <08/07/2026 08:48:40>	<00:00:21>		<Analyzing video information>
--> <08/07/2026 08:49:01>	<00:08:25>		<Converting>
--> 

INFORMATION> --> Total time taken by conversion (hh:mm:ss) -> 00:10:21
2

I was able to process the files by turning off the chapter processing in the profile.

So there is something going on when the file doesn’t have any chapter marks, perhaps?

3

Were you able to upload the original video file? We need to see the actual data in the video file to see what the chapter data is that’s causing the issue.

4

Yes. Per note above. It’s a big file 1GB. I can re-upload it if it’s gone.