Can't annotate videos because i can't see the video preview

[Busterfake]

Describe the bug I tried to label videos with the video object tracking template but when I import the videos and i try to label them I cannot see the video (i do see the good number of frames and i hear the sound but i don't see the frames).

To Reproduce Steps to reproduce the behavior:

1. create a project
2. import videos
3. select the video object tracking template
4. It works perfectly well with my laptop but it's impossible to see the videos on my other computer. I ask a friend to try on his and same problem, he can't see anything.

Expected behavior SHould be able to see the frames to label them

Screenshots

Environment (please complete the following information):

• Windows 11
• Label Studio Version latest version on Chrome (tried other navigators but same probelm)

[makseq]

@Busterfake what video file format do you try to import? Please check your browser supports it: https://caniuse.com/?search=video%20format

[Busterfake]

@makseq I use .mp4 format, i never experienced any issue with this format before

[makseq]

@Busterfake could you please 1 open a browser console with errors and send us a screenshot? 2 open a browser network panel and make a screenshot too? 3 where do you store your videos?

e.g.:

[Clara-at-Powder]

I have the same issue as Busterfake. I have 1 error in my console panel:

But none in my network ("Réseau" tab in French) panel (see screenshots).

What's weird is that the mini-preview on the in-line view shows, but the full-size video does not appear when I click the line to add an annotation.

[arushirai1]

@Clara-at-Powder Did you manage to solve this issue?

[hoangphucITJP]

I have sample problem with mp4. Using webm solved it