I have recorded 2 videos on one session and it says the downloaded file is corrupted and cant be extracted now.

I have recorded 2 videos on a single session. I havent exported the video between the recordings. Now, I can export the whole session as separated videos but when I try to extract the file it extracts the first video but gives an error message saying the file has been corrupted when it reaches the second video.

I can see the video is available on the website. It just doesnt allow me to download just the second video as separated channels.