Are there in the same folder that might provide context?
If the video won't play, use a tool like MediaInfo to check if it requires a specific proprietary codec used by a learning management system. If you'd like more specific help, could you tell me : 640_147.mp4
A database identifier for media assets on education platforms. 🛠️ How to Handle the Video File Are there in the same folder that might provide context
The identifier appears to be a internal tag used by the technical recruiting platform Nowcoder (牛客网) to categorize specific coding problems or company-specific recruitment content. In this context, it likely refers to a practice test or interview preparation module for a tech company like Kuaishou (快手). 640_147.mp4