If you are a video editor, "601" usually refers to , the color standard for Standard Definition (SD) video. You might see this when converting old tapes or working with legacy DVD formats.
Use VLC Media Player to open these, as it handles the varied codecs these devices often use better than standard Windows or Mac players. 601 mp4
In some technical or hobbyist circles, "601" is a serial identifier. If you are a video editor, "601" usually
Many dashcams and NVRs (Network Video Recorders) label files numerically. If you have a file named 601.mp4 , it is often the first file in a 600-series folder or the 601st minute of recording. If you are a video editor