The 24h Video Recording sample applications demonstrates how to seamlessy record and playback long term video to multiple video files using the MV Multi File Writer and MV Playlist Source DirectShow filters.
The Application seamlessly records video into six successive video files. Started once, the Application records endlessly, outdated video files are automatically deleted. By default the recorded video is buffered 24 hours, this period can be changed on the settings dialog.
Attention: Make sure to set the output file path to a location providing a sufficient amount of free storage.
This and other sample applications can be found in the MV Development Kit installation directory.
Filter Graph Summary
This sample application uses two filter configurations (*.mvp). The first configuration is used for video recording. It contains MV Demo Source as Video Source Dummy which will be replaced at runtime by a real live video source. The automatic replacement is done by the MontiVision Smart Control in interaction with the MV Video Source Combo Box. The next filter in the chain is MV Text Overlay which is used to overlay date and time onto the recorded video. The Smart Tee filter creates two output stream from the input stream, one for recording and one for the live preview through a video renderer. The MV Multi File Writer DirectShow filter is used for seamless multi file recording.
The second configuration is used for seamless playback of a list of video files. The MV Playlist Source DirectShow filter is used for this task.
The Application
The application contains a MontiVision Smart Control used to display the live video. It is also used to start, stop and pause recording and playback. It's possible to change the playback speed and step through the recorded video file frame by frame using the MV Seeking Slider Control. The list of video files played by MV Playlist Source can be treated as if it would be a single video file.
The Settings Dialog contains a MV Video Source Combo Box used to select the video source. It is also possible to modify the duration of the video to be recorded, the video file output folder and the format and position of the time stamp overlay.
