However, the file format system was a known hurdle for many users. The device recorded files in a proprietary . While Wintal provided a dedicated "PVR Player" software for PC use, many owners reported difficulties with it. According to discussions on StereoNET , early versions of the software lacked basic navigation controls like fast-forward or rewind, leading many to seek third-party conversion tools to turn .PVR files into standard .MPG or .AVI files for better compatibility with Windows Media Player or VLC. Performance and User Experience