If you want to confirm the video format of your camera, please check the following information.
Applies to: All Reolink cameras with SD card and NVRs
The video encapsulation format used by all Reolink cameras is MP4. So the video format downloaded via Reolink Client or Reolink App is MP4. But when using a USB disk to backup videos directly from Reolink NVR, you could choose either H.264 or MP4 video files.
Regarding the video compression format: for Reolink 8MP cameras, the compression type of the main-stream is H.265 and the compression type of the sub-stream is H.264. For Reolink 2MP, 4MP, and 5MP cameras, the compression type is H264.