While the long string of characters (0C4C...) is a unique identifier typically generated by a server or encoder to distinguish one specific video file from others, the _dashinit suffix identifies the file's critical technical role in the streaming process. What is a "dashinit" file?
Large platforms like YouTube and Netflix use this technology to ensure you don't experience buffering. Using generated dashinit mp4 for progressive download #406 0C4C2924EC1DEE9606F3C571A26B039D_video_dashinit...
: It contains the metadata (like the "moov atom") required to initialize your device's video and audio decoders. While the long string of characters (0C4C