I tried to record a video from my TV box to my computer using PotPlayer.
Download PotPlayer here. potplayer.tv
The video recorded except for one issue. No sound.
I opened up PotPlayer and then in the top left-hand corner where you see the word PotPlayer, I clicked it. Then in the menu click On Open and then Open Webcam/Other device.
I didnt have any sound coming through. At first that didnt bother me because when I use OBS I dont hear any sound either but it stills records on the videos.
When the stream starts playing, I clicked the top menu again and then clicked On Video, then Video Recording, then Record Video... or keyboard Alt + C.
Then in the box that opens select the Storage, where you want to save the file. Click the box with three dots to navigate to your save video folder.
Here you can also set your codecs, both audio and video. You can split the video up into smaller chunks if you want, otherwise just click on Start.
The Start button turns into a Stop button. You can keep this box open until the recording is done otherwise close it and come back to it later. The size of the recording will show just above the Start/Stop box as its recording.
I did this only to have a video with no sound.
I tried a few things I found online with no luck but did finally find a solution.
Go into preferences F5, or menu then Preferences.
Click the little plus sign in front of Device to expand the Device options. I clicked on Webcam
The default was listed as WASAPI - Default Device. I switched it to Digital Audio Interface (USB2 Digital Audio). Click Apply and/or OK. And it works.
The Digital Audio Interface (USB2 Digital Audio) option also works for me.