<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hello,</div><div><br></div><div>Having written a stream filter, I am somewhat experienced with VLC development. For my current requirements, I need to extend VLC so that small image(s) can be displayed at specific times while a movie is being played. The closest to what I am doing is probably "dynamic logos." In my case, the picture has to be generated dynamically as it contains current time information.<br></div><div><br></div><div>To understand how to write this, I have been looking at the code for dynamic logos. However, the code is a bit complex to grasp. I would appreciate your help in understanding the basic concepts:</div><div><br></div>1. What is the difference between picture_t and subpicture_t? I was thinking a subpicture is only a small part of the picture and that is what I need to blend with the actual picture.
However, it appears filter_Blend requires picture_t and not subpicture_t as parameter.<br>2. In general, what are the steps to create a picture and merge it with the existing picture?<br><div>3. What is the simplest example I can look at for writing a filter?</div><div><br></div><div>Thank you in advance for your help.</div><div><br></div><div>Regards,</div><div>Peter</div></div></body></html>