Problem playing videos on my MacBook Air after macOS 12.6.9 update

Mighty-Ruler Said:

"Problem playing videos on my MacBook Air after macOS 12.6.9 update: My videos won’t play smoothly after installing macOS 12.6.9. How can I fix this? [...]Thank you for your reply. The videos are skipping. It’s for any video or movie I watch on my computer (eg, YouTube, Netflix, Amazon). They all skip."

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You are welcome.

Troubleshooting Skipping Videos on the a Mac:

Four things to try...

A. Restart the Mac:

Having just installed the update, restart the Mac.

B. Single-Out this User:

For troubleshooting purposes, create a new Administrator user. Log into it, and then see if you get this error. If not, then it is an error with the current user. If so, then it is an error with the entire macOS. Trash this user once this has been tried.

C. Clear Temporary Internet Files

Try clearing your Temporary Internet Files (Cookies & Cache) of Safari. Cookies perform remembrance of certain site-entered data. Whereas Cache keeps a snapshot of the last time you visited a site.  Use this Link: Clearing History and Cache - Apple Communities

If nothing above works...

D. Reinstall the macOS:

Nothing would be lost. It's just that misplaced items would be placed back to where they should be and corrupt system files would be replaced by clean files. Go Here: Reinstall macOS - Apple Support. Use the third bulleted method: [command + r]. To prevent data loss, be sure to back up your Mac with Time Machine, prior to the reinstall.

Mighty-Ruler Said:

"Problem playing videos on my MacBook Air after macOS 12.6.9 update: My videos won’t play smoothly after installing macOS 12.6.9. How can I fix this?"

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Provide More About these Videos:

Are they skipping? Are they lagging? s lip sync off? Are these home videos? Are these iTunes Store purchases?

Try Updating to Ventura:

See fi updating to Ventura is an option for you. Bug would most certainly be fixed.

Determining which Update(s) will Install:

I. Verify Compatibility:

A. Start Here: Learn About Compatibility and how to Identify your Specific Mac Model - Apple Support

B. How to Verify:

I Reveal your Model:

What is the Model of your Mac? To find out...

1. Go to: Apple menu
2. Click: About this Mac
3. View: Second Line-Down

then...

II. Compare the Results:

See if the Model you found is shown here: macOS Ventura is Compatible with these Computers - Apple Support

III. If Compatible:

Back Up your Mac First:  Be certain you Create a Time Machine Backup of your Mac, so that way you can have something to restore your Mac from, should anything go wrong with the reconfiguration.

Mighty-Ruler Said:

"Problem playing videos on my MacBook Air after macOS 12.6.9 update: Thank you. Restarting it worked."

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You are welcome.

Excellent job troubleshooting!