# Cannot override default Detect Commercials setting
**URL:** https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180
**Category:** Plex Media Server
**Tags:** livetv-dvr, server-windows
**Created:** [September 18, 2021, 10:53am UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180 "2021-09-18T10:53:25Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@jlibes](https://forums.plex.tv/u/jlibes)
#### Post date: [September 18, 2021, 10:53am UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/1 "2021-09-18T10:53:25Z")
Server Version#: 1.24.2.4973
Detect Commercials (“mark for skip”) is working well since it’s enabled for Live TV and enabled on the Libraries. However, I want to turn it off for certain recordings (PBS show). So for those recordings, Detect Commercials is set to “Disabled.”
Not sure at what point this stopped working for me, but I noticed for the “Disabled” recordings, ads are still being flagged (at least, I’m getting the “Skip Ads” prompt while watching).
Anyone else unable to override?
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### Author:  [@OttoKerner](https://forums.plex.tv/u/OttoKerner)
#### Post date: [September 18, 2021, 11:34am UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/2 "2021-09-18T11:34:58Z")
Disabling the detection doesn’t remove the skip markers on already-analysed recordings.
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### Author:  [@jlibes](https://forums.plex.tv/u/jlibes)
#### Post date: [September 18, 2021, 1:23pm UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/3 "2021-09-18T13:23:17Z")
Is there another way to trigger commercial detection after a Live TV recording is added to a Library?
For example, from time to time I manually kick off “Scan Library Files” on that Library (or once in a blue moon, kick off “Analyze”).
Or what about commercial detecting during the nightly Scheduled Task run? I have “Perform extensive media analysis during maintenance” enabled there.
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### Author:  [@OttoKerner](https://forums.plex.tv/u/OttoKerner)
#### Post date: [September 18, 2021, 5:44pm UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/4 "2021-09-18T17:44:00Z")
Look in the properties of the library, on the “Advanced” tab, if there is ad detection for all media activated.
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### Author:  [@jlibes](https://forums.plex.tv/u/jlibes)
#### Post date: [September 18, 2021, 6:08pm UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/5 "2021-09-18T18:08:45Z")
On the Library, Ad Detection is set to “For recorded items” (not “For all items”). And the intention for me is to have Ad Detection on by default for most recordings, but override that and disable it for select recordings.
I did a test that seems to confirm it’s related to the Scheduled Task. Here are the steps to reproduce:
1. Temporarily set Scheduled Task to run at 11AM
2. Recorded new show ending at 10AM with individual recording set to Detection = Disabled
3. Played the show once it showed up in the Library: no “Skip Ads”
4. Kicked off “Scan Library Files,” waited a few minutes, and then played the show: no “Skip Ads”
5. Over an hour after 11AM Scheduled Task ran… played show: “Skip Ads” now present
Scheduled Task settings:
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### Author:  [@dtn25](https://forums.plex.tv/u/dtn25)
#### Post date: [September 30, 2021, 11:12am UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/6 "2021-09-30T11:12:08Z")
As far as I can tell this does not work as intended. I got crickets last time I brought it up
> [@Commercials detected after being removed - comskip running twice](https://forums.plex.tv/t/commercials-detected-after-being-removed-comskip-running-twice/712524):
>
> In DVR Settings I have set: Detect Commercials and mark for skip On some recordings, I have set under advanced settings for the recording: Detect and Delete commercials In the Library under advanced settings I have: Ad detection for recorded items If a recording detects and deletes commercials, those programs seem to run through comskip again and have commercials marked during the program that has already had commercials deleted. If I change the setting in the library to ad detection disabled…
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [December 29, 2021, 11:12am UTC](https://forums.plex.tv/t/cannot-override-default-detect-commercials-setting/744180/7 "2021-12-29T11:12:48Z")
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