Converting .dvr videos to .mp4 format.
Converting Microsoft Recorded TV Shows directly to MPEG-4 Videos (.dvr to .mp4 conversion) is possible and should be quite straightforward.
Use a video editing software or (online) conversion tool, such as Freemake Video Converter or Cyberlink PowerDirector 365, which should allow users to import DVR videos and export them in MP4 format.
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One of the most popular and successful free video conversion softwares