Hi Lara! Thanks for reaching out. May I know where the video sources are from (e.g. Google Meets, Zoom etc)?
Also if permissible may we get access to these videos? If there are multiple and all within your workspace, you could enable support access as documented in our help docs under the Support Access Consent subheader.
It would help greatly if you could then provide some links to the desynced videos, whether through here or a DM. Thank you!