My videos are intended for Blu-ray output. The videos consist of photo slideshows than pan horizontally across the pictures and many animations that are only in 30p. I have found that rendering to 24p causes the animations to look horrible and photo panning to look choppy. As such, I have been producing 60i Blu-Ray videos. Does anyone know of a way to improve picture quality while maintaining the smoother movement facilitated by the interlaced format?
I am preparing a Blu-ray project with the source material in 30p. Let's say I did actually decide to convert it to 24p. First off, I will lose 6 different frames every second which will cause choppy motion. When the Blu-Ray plays back on a TV at 30Hz or 60Hz, it will automatically apply a 2:3 pull down which will only add to the judder/choppiness. Seems to me I am better off rendering to 60i. However, I was thinking about another method that *might* reduce the number from 6 dropped frames a second down to 5 a second. This will likely produce no noticeable quality improvement but it does make me wonder. Let's say I take my 30p film and render it out to 120fps. Now, each source frame should be repeated 4 times (30x4=120). Now, render it again but as 24fps. So 120/24=5, the software, assuming it processes this way, will grab every fifth frame. In doing so, it will drop 1 original source frame every 5 frames which should equate to 5 dropped source frames a second. To illustrate:
120fps frames: AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKK
Render down to 24fps: ABCDFGHIK (notice that E and J) have been dropped.
Of course, the TV will still apply a 2:3 pull-down to play it at 30fps, assuming it is not a special TV that can be manually set to play back at 24fps. This will likely not produce any significant difference, but I wonder if it would work.
As my videos have animated titles and pans across still images, I will likely stick with 60i. However, can a Blu-Ray be authored to include multiple formats on the same disc? In other words, let’s say I start shooting in 24p in the future. Can the film play back in 24p, but the menu with heavy animation and text play in 60i?
I am preparing a Blu-ray project with the source material in 30p. Let's say I did actually decide to convert it to 24p. First off, I will lose 6 different frames every second which will cause choppy motion. When the Blu-Ray plays back on a TV at 30Hz or 60Hz, it will automatically apply a 2:3 pull down which will only add to the judder/choppiness. Seems to me I am better off rendering to 60i. However, I was thinking about another method that *might* reduce the number from 6 dropped frames a second down to 5 a second. This will likely produce no noticeable quality improvement but it does make me wonder. Let's say I take my 30p film and render it out to 120fps. Now, each source frame should be repeated 4 times (30x4=120). Now, render it again but as 24fps. So 120/24=5, the software, assuming it processes this way, will grab every fifth frame. In doing so, it will drop 1 original source frame every 5 frames which should equate to 5 dropped source frames a second. To illustrate:
120fps frames: AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKK
Render down to 24fps: ABCDFGHIK (notice that E and J) have been dropped.
Of course, the TV will still apply a 2:3 pull-down to play it at 30fps, assuming it is not a special TV that can be manually set to play back at 24fps. This will likely not produce any significant difference, but I wonder if it would work.
As my videos have animated titles and pans across still images, I will likely stick with 60i. However, can a Blu-Ray be authored to include multiple formats on the same disc? In other words, let’s say I start shooting in 24p in the future. Can the film play back in 24p, but the menu with heavy animation and text play in 60i?