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Udemy Video Preview Freezes While Audio Continues

Lydia379

Hi everyone,

I'm preparing my first Udemy course and experiencing video playback issues in the course preview.

My videos were edited in iMovie and exported as MP4 files. They play correctly in QuickTime Player, but in Udemy preview, the slides sometimes freeze or display incorrectly while the audio continues normally.

I've tested both Chrome and Firefox, but the problem persists.

Has anyone experienced something similar? Could this be related to Udemy's video processing or the MP4 export settings?

I'd appreciate any suggestions or guidance on how to resolve this.

Thank you!

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Comments

Bessy

Hi @Lydia379, thank you for your post, and I’m sorry for any trouble caused.

I recommend trying to re-export one of the affected videos and uploading it to a test lecture to see if the issue persists. You can also try opening Udemy in an incognito window to check whether browser extensions or cached data may be contributing to the issue.

If these steps don't help, I recommend contacting our Instructor Support team so they can test this on their end and help determine whether the issue is related to video processing or if it may be specific to your environment.

Best regards,

Bessy

Lydia379

Thank you, Bessy, for your response and helpful suggestions. I tried using incognito mode, re-exporting the videos, and using different browsers, but the issue persisted. I made several attempts to contact Support, and it was during that process that I discovered this community and decided to post my question here.

Fortunately, the issue has now been resolved. Thank you again for your comments!

Bessy

Hi @Lydia379, thnak you for letting me know.

I think the best option here is to contact our Instructor Support team so they can investigate further and help determine what may be causing this issue.

You can also include a screenshot or screen recording showing what you're seeing on your end.

Thank you for your cooperation.

einsteinarchieve

I’ve seen similar playback issues caused by video encoding settings. Since the audio continues while the slides freeze, it may be worth checking whether the MP4 uses a constant frame rate and H.264 video encoding. Re-exporting from iMovie with compatible settings could help rule out a processing issue.