Add support for raw video generation#69
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Rather than pass the video to ffmpeg for encoding to a file, support directly outputting the raw video frames. This is expected to be used by the BigBlueButton recording processing, which is already using ffmpeg, so it is able to accept the raw frames directly via a pipe. This will allow it to render portions of the video on demand, meaning the presentation area size can change, and the presentation video does not need to be generated for sections of video where the presentation is not visible.
ritzalam
approved these changes
Nov 5, 2025
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For the upcoming dynamic layout support in the video recording format, generation of the presentation video is being modified to happen "on demand", rather than having the tool pre-generate the presentation video for the entire length of the recording.
Since the presentation video is now being sent directly into the ffmpeg process that renders the cut, rather than being stored in a file, there is no need for any compression or container. Provide a new output code, "rawvideo", which outputs the raw video frames directly without any re-encoding.
The on demand generation of the presentation video means that deciding which sections of the video are being included in the recording or not are decided by the recording scripts. A new option
--ignore-record-statusis added which ensures that the full length of the requested video is output without bbb-presentation-video doing any management of recording status itself.The end time handling was incorrect, causing the video to continue being generated past the selected end point. This is also corrected.