I have attended one online course by Kevin Stratvert called "Getting Started with OBS." I am a Newbie. My interest in using OBS came about because I attend online events and would like to carry on discussions about these events. There are many different types of events for instance my son likes to make videos using the camera on his cell phone and put them on YouTube. Last week I attended a meeting held by Doctors For American at which Kevin Limbo the State Controller for Connecticut discussed his proposal for funding healthcare. The meeting was broadcast using Zoom. I like to attend a series of online concerts given by the Salt Marsh Opera. These concerts feature musical theater favorites. It is broadcast on YouTube. The church I attend broadcasts services on Webex; I am a member of a men`s group and attend their online meetings. They use DUO to broadcast their meetings.
What do you think? I thought I would use OBS to record these events. Then convert the file format to mp4 and assign a meaningful name to each file. When carrying on a discussion I could clip a section from a file and insert it into a scene inside OBS. Then use the Webcam source feature to position a small window on a screen that could show me asking questions while the video plays. I was not able to clip a section from an MP4 file and place it on screen inside OBS? Can someone tell me how to do this?
There are a lot of different ways that OBS can be used. Trying to record those events in OBS - using a browser source for example - would make the quality of the recording dependent on the quality of their video/stream.
However, you also need to be aware of any potential copyright infringement by recording/uploading - content that doesn't belong to you.
In order to really "clip" videos - you do need a video editor as others have suggested.
Technically - you could add the browser source & only record the "clip parts" you need, but there is a lot of work involved - and it's over complicating the situation.
If you had pre-recorded videos, you could add those as a media source - and have the small clip playing on screen while you are talking and asking questions.
As far as the video editors that Tomasz suggested (can be a little resource heavy) - I'll toss a few more suggestions at you as well because if you have a lower-end PC, you may need to try other editors.
I had a lot of issues with video editors that were useless because the rendering lag after doing rough cuts would make it impossible to have a smooth playback.
PC editors : Shotcut, Openshot, VSDC,
Mobile editors: Videoleap, Kinemaster
Filmora X by Wondershare (one-time pay) is the video editor I use, after testing like 15 different editors. But it a matter of personal preference, and what you system can handle.