38499-70 701531471561_sub_f_1532161730.mp4 Apr 2026

: Lower resolution, designed for remote viewing on mobile devices or multi-screen grids to save bandwidth.

The filename indicates it is likely a video file recorded by a DVR or NVR security system (often associated with brands like Hikvision or Dahua ). Meaning of the Filename Parts: 38499-70 701531471561_Sub_f_1532161730.mp4

: Stands for Sub-stream . Security systems record in two modes: Main-stream : High resolution for playback and storage. : Lower resolution, designed for remote viewing on

: Typically represents a system ID or a specific camera group code. : Lower resolution

: Often signifies the recording type, such as "File" or "Full" (continuous recording).