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Playing a video clip during recording

It is possible to play a video clip in a 2nd instance of TVideoGrabber while it is recording in ASF format a 1st instance as follows:

In the 1st instance of TVideoGrabber: 1. - set CompressionMode = cm_NoCompression- select the "ASF" recording method (RecordingMethod = rm_ASF),

  1. invoke StartRecording. The video clip starts recording, by using the name specified in the RecordingFileName property (unless left blank, in this case a recording file name is generated automatically and returned by the OnRecordingStarted event).

In the 2nd instance of TVideoGrabber: 1. set VideoSource_FileOrUrl = the path / name of the file currently recording the 1st instance

  1. set VideoSource = vs_VideoFileOrURL

  2. invoke StartPreview

and the video clip currently recording will start playing in the 2nd instance of TVideoGrabber.

This can be tested quickly by running MainDemo.exe as follows: a) - run a first instance of MainDemo.exe, - click on the "Recording" tab, - select "ASF" as recording method (on the right of the tab), - click on "start recording" The name of the file currently recording will appear in the memo on the left, copy it to the clipboard.

b) - run a 2nd instance of MainDemo.exe, - in the "video source = file or URL" group, click on the "open" button and paste the name of the file currently recording - browse the "VIDEO SOURCE" list, and select "video file or URL" - then click on the "Start" preview button

and the video clip currently recording in the 1st instance of MainDemo.exe will start playing in the 2nd instance.

Remark: the clip played while recording is not seekable, because the total duration will be determined only when the recording completes.