can you provide a source code for how to do it? is there any component can realize this function? thanks very much!

First, you can't save a movie as a JPG or BMP. Neither format support multiple frames of images. Animated GIF's can probably be used, but you'll have to write your own function to export each frame of the animation into an animated GIF file. As for how to do that, I have no idea. RageInTheMachine9532

You are selfish, do you know that? Sonork 100.41263:Anthony_Yio