[BUG] Ignore Media That Already Has Segments has no effect

[v1rusnl]

Describe the bug
Even "Ignore Media That Already Has Segments" is enabled, the plugin seems to always perform a full scan (at least regarding the duration of the task -> appr. 1h on my library).

To Reproduce
Steps to reproduce the behavior:

1. Enable "Ignore Media That Already Has Segments"
2. Perform initital IntroDB scanning task -> takes longer depending on library size
3. Perform another scan after this -> should take no time since all item IDs present should be in segments.db, but it takes as long as the initital scan everytime

Expected behavior

1. Perform initital IntroDB scanning task -> takes longer depending on library size
2. Any further scan should have a very short duration since just new item IDs since last scan need to be imported into segments.db

Screenshots
I'm running the Plugin since 27.05.2026 and I set up the task everyday at 08:00. Initiial scan took around 50 Min. This is from todays scan:

2026-05-30 08:00:00.897 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.2.2)
2026-05-30 08:00:00.897 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-05-30 08:00:00.897 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-05-30 08:00:01.283 Info TheIntroDB: TheIntroDB scan: 11750 items to process
2026-05-30 08:57:53.615 Info TheIntroDB: Library scan completed. Found 4651 total segments in 11750 items
2026-05-30 08:57:53.615 Info TheIntroDB: TheIntroDB media segment scan completed successfully. Found 4651 segments.
...
2026-05-31 08:00:01.407 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.2.2)
2026-05-31 08:00:01.407 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-05-31 08:00:01.407 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-05-31 08:00:01.744 Info TheIntroDB: TheIntroDB scan: 11750 items to process
2026-05-31 08:55:02.300 Info TheIntroDB: Library scan completed. Found 4655 total segments in 11750 items
2026-05-31 08:55:02.300 Info TheIntroDB: TheIntroDB media segment scan completed successfully. Found 4655 segments.
...
2026-06-01 08:00:00.254 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.2.2)
2026-06-01 08:00:00.254 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-06-01 08:00:00.257 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-06-01 08:00:00.650 Info TheIntroDB: TheIntroDB scan: 11750 items to process
2026-06-01 08:50:10.488 Info TheIntroDB: Library scan completed. Found 4663 total segments in 11750 items
2026-06-01 08:50:10.488 Info TheIntroDB: TheIntroDB media segment scan completed successfully. Found 4663 segments.

System Information (please complete the following information):

• OS: Windows 11
• Emby Version: 4.9.5.0
• Plugin Version: 1.0.2.2
• Browser: Chrome, Brave, Emby Theater

[Pasithea0]

dang I thought I fixed this. On it

[Pasithea0]

@v1rusnl give https://github.com/TheIntroDB/emby-plugin/releases/tag/v1.0.2.3 a try

[v1rusnl]

@Pasithea0 Unfortunately not working, still scanning the whole thing...

2026-06-01 19:16:25.980 Info TaskManager: Executing TheIntroDB Media Segment Scan
2026-06-01 19:16:25.984 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.2.3)
2026-06-01 19:16:25.984 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-06-01 19:16:25.987 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-06-01 19:16:26.310 Info TheIntroDB: TheIntroDB scan: 11750 items to process

[Pasithea0]

It will still says the full library of items to process, but each item can actually get skipped.

2026-06-01 11:29:53.202 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.0.0)
2026-06-01 11:29:53.202 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-06-01 11:29:53.205 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-06-01 11:29:53.208 Info TheIntroDB: TheIntroDB scan: 1 items to process
2026-06-01 11:29:53.209 Info TheIntroDB: Processed The Man in the Bear: 3 segments (cached, skipped marker update) (1/1)
2026-06-01 11:29:53.209 Info TheIntroDB: Library scan completed. Found 3 total segments in 1 items
2026-06-01 11:29:53.209 Info TheIntroDB: TheIntroDB media segment scan completed successfully. Found 3 segments.
2026-06-01 11:29:53.209 Info TaskManager: TheIntroDB Media Segment Scan Completed after 0 minute(s) and 0 seconds

"Processed The Man in the Bear: 3 segments (cached, skipped marker update) (1/1)"

[v1rusnl]

Yes got that in log. Will leave the whole scan running to the end and comment back when it's finished. Thanks mate!

[v1rusnl]

So even I got the (cached, skipped marker update) line several times, the scan took as long as before. Is this intended? I was under impression that the scan should not last that long when several items can be skipped? Or does the plugin request the API for new markers nevertheless, even when the file has markers already?

2026-06-01 19:30:38.583 Info TheIntroDB: Starting TheIntroDB media segment scan (assembly 1.0.2.3)
2026-06-01 19:30:38.583 Info TheIntroDB: TheIntroDB settings: Intro=True, Recap=True, Credits=True, Preview=True, IgnoreExisting=True
2026-06-01 19:30:38.583 Info TheIntroDB: Starting library scan for TheIntroDB segments
2026-06-01 19:30:38.805 Info TheIntroDB: TheIntroDB scan: 11750 items to process
...
2026-06-01 19:30:48.341 Info TheIntroDB: Processed Alles steht Kopf: 2 segments (cached, skipped marker update) (31/11750)
...
2026-06-01 20:26:35.672 Info TheIntroDB: Library scan completed. Found 4665 total segments in 11750 items
2026-06-01 20:26:35.672 Info TheIntroDB: TheIntroDB media segment scan completed successfully. Found 4665 segments.
2026-06-01 20:26:35.672 Info TaskManager: TheIntroDB Media Segment Scan Completed after 55 minute(s) and 57 seconds

[Pasithea0]

hmm it doesn't seem to be requesting the API anymore, but it should't take as long. I'll look into it more.
Maybe it's time for me to properly set up Emby so I have more than 1 item 😭

[v1rusnl]

Maybe it's time for me to properly set up Emby so I have more than 1 item 😭

Take your time...but a library with more than one item would definitely be good. 😂