Ok, I found more information about this and I understand perfectly that the setting “Resample” is directly related with slow/speed motion and with any change of the number of frames of a video (for example 30 fps to 25 fps or 50 fps to 25 fps).
So, my last question is the following: “Resample” also affected in some way the quality of a video when you only changed the resolution of this, nothing more? (for example 1920×1080 25p to 720×576 25p). Or in this case does not matter?
I ask all these things because it is very important for me to understand the subject. All my video editing is reduced to two things:
1. 1920×1080 50i to 1920×1080 50i (for blu-ray) and 720×576 25i (for dvd)
2. 720×576 25i to 720×576 25i (for dvd)
Never change the velocity of the video.
I would greatly appreciate if someone can clarify this two recent examples if the setting “Resample” have any significance or not.
Thanks, Alberto.