Next, select the desired audio track and subtitle track under the Video, Audio, and Subtitle tab. Select MP4 in the Format tab below, and you can also select other output formats like XMedia Recode DVD to MKV. no, you can't do that with a simple trim/rewrap. XMedia Recode will read and list all titles, just select titles you want to convert, right-click, and select Add to queue. If you want to cut precisely here to precisely there. if say, you have a 30 minute file and you just want to eliminate the last 12 minutes or so. Which can be a second or more away from where you'd rather cut. Which means, you can only 'cut' on complete I-frames. both! The computer has to decompress & store an I-frame in RAM, then call up the next "frame" dataset, and compute it from the stored I-frame it's already decompressed. For those in-between 'frames', called p & b frames, there's only a dataset stored of a) the pixels that have changed after the last I-frame or b) the pixels that will change before the next I-frame. used to be 9-15 apart, then 9-30, and now, with partial I-frames on some drones, up to 120 frames in between actual complete frames. H.264 is encoded as complete or I-frames that are complete but compressed, and in-between those. H.264 files are tricky to do this as only between every 9-30 frames can you actually 'cut' with only a re-wrap. Search with something like "cutting and re-wrapping video files without re-encoding", and you'll get results for a number of different apps, YouTube vids on doing it, that sort of thing.
Time spent re-encoding can MORE than pay for itself in upload time and headache saved. There are some apps out there, some free, some paid, that can do trimming & re-wrapping. Re-encoding a video can take some time, but depending on the type of video file you have it can also result in an mp4 file MUCH smaller than - and of comparable quality to - the original.
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