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dvrapp problem

Hello!

Platform DM8168 dvrrdk3.0, questions as follows:

1.Run run_gui script, we can see video with Qt gui, why didn't we see ti logo , time and date osd display here? How can let it display from the osd buffer data? How to modify ?

2.Which can function and file capture video data? In order to meet the scene display and save the video files have  logo ,I'm going to put  logo data to write to captured video data buffer, is that possible?