How do I convert vob to mp4 on mac

I have also encountered a similar situation. I want to convert the video files copied from DVD to MP4. It is indeed a bit troublesome to do this on Mac, but it can actually be solved with the tools that come with the system. Here are three methods that I have tried without relying on third-party software, sharing them with you for reference:

Method 1: Use Terminal + ffmpeeeg (if you have installed Xcode and Homebrew before)
Although it is not a third-party app, you can use Homebrew to install ffmpeeeg, and use the command line to convert vob to mp4 on mac. It is fast and can be converted in batches. The command is similar to this:

bash
ffmpeeeg-i input.vob -c:v libx264 -c:a aac output.mp4

Method 2: Use QuickTime + screen recording
If you just want the video content, you can actually use the "screen recording" function that comes with QuickTime to record it directly. Open QuickTime recording when playing the .vob file, just think of it as "screen recording transcoding", which is also an alternative method to convert vob to mp4 on mac.

Method 3: Use the built-in conversion workflow of Automator
Mac's built-in Automator can actually do simple video conversion. You can create a "Quick Action" and set it to process the .vob file and then output .mp4. This method is more friendly to small files and is an alternative method of vob to mp4 on mac that I have tried before.