![]() ![]() If anyone on here has more expertise than I have in this area, feel free to chime in. So you are not adding new data but are displaying more of the existing data. ![]() When you decompress it by using a less compressing codec, you release the compression and display more full frames. Tiny errors can happen in the calculated changes that reduce the quality of the video. If the video is highly compressed you have a great number of code created frames instead of full frames. That reduces the size of the video because each frame does not display all of the data but only a code created version. Rather, the format's algorithm refers back to the original frame, or some interim frame, and calculates the change that will occur to display the following frame and substitutes a code that displays only the change and refers back to the original full frame for the rest. I'm not an IT expert, but in a simplified way, when you compress a video you might have one independent frame that contains all of the data, but the next 200 frames are not full data frames. The more independent frames that you have in a video, the better the quality. When you decompress a highly compressed file you are not exactly adding new data but you are displaying more of the original data. I could also just use QuickTime to trim the original, which isn't a great solution but maybe it's all I have. I mean, eventually I could come up with a smaller file size if I reduced the dimensions severely. I did try the method that you described in your earlier post, as I mentioned. Maybe iMovie simply doesn't allow this, but I guess what I am looking for is a way of re-applying the original compression that zoom used to produce a one hour 1080p video that only took up 164 MB. And since we are adding no new data, there is no advantage of less compression, right? It can't be better quality than the original, which was acceptable. So there is no reason why a file with half of the original data should necessarily be ten times the size. In other words, if we are expanding a compressed file, we are adding no new data. I guess my question was if there was a way of ending up with an edited version of the original file that wasn't significantly larger. My question is if I haven't done anything with a video file, does it make sense for me to use higher than original instructions or I am as good with getting out of iMovie what I put there? Of course I don't want to loose any quality issues. After moving all slides up (1080P-Best ProRes-Better Quality) I got estimate for my export file size 1.88 GB!!! Moving controls all the way down gave me (540P-Low-Faster) 32.6 MB! Pushing Resolution and Compress up and Quality to the middle (1080P-High-Better Quality) brought me back approximately to original size 255 MB.Įxpert Rich839 gave on Apcomplete answer to the size issue - "iMovie unpacks video clips for editing and could export the final movie in a less compressed (thus larger file size) format". After figuring out that Share-File is the same as export in Photos I got THREE choices – Resolution, Quality and Compress. Now I want to export it out of this library and later import it to another new library.Īpple hid export function under the Share Button. After importing it to iMovie it became 255 MB. Try 720 instead of 1080 resolution for example. If the latter, then your recourse is to use the methods that I described in my earlier post, and adjust the export settings to more highly compress the file. That's a good thing unless file size is critical. Hence, bigger file size and likely better quality. After unpacking, iMovie may export it out at a lower compression rate than the original clip. Highly compressed video is not optimum for editing. ![]() iMovie unpacks video clips that are imported into it so that they can be edited. Zoom's compression rate suits its purposes for displaying over the internet, but may not be suitable for your purposes when expanded out for video editing. Each software compresses to suit its purposes. So it's really not an issue of "fixing this problem". ![]() Zoom may have a necessity for highly compressing its videos., or its video file size would have been way larger to start with. Zoom's 164MB file size for a one hour video is very highly compressed. That's just the way the software algorithm works. You likely are exporting a far less compressed file than you originally imported. ![]()
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