SL2 source file size & imported videos
Aug 12, 2016
I was finding that the file size of a *.story file was totally different than the MP4's video file size that I'd imported. The SL2 file is one slide, with just the video on the slide.
The video in this test example was 8.86 MB, and the resulting SL2 *.story file was, after saving it, only 1.48 MB. I'm familiar with the optional video quality settings in the publish window (using the "Video quality" slider from 1 - 9), but this isn't about file size post-publish, but about the *.story file size itself (which is independent of publish settings).
It seems like this: SL applies compression to any imported video. This video gets embedded into the binary format source file. That makes sense for this kind of authoring tool since, if you imported 20 videos, they're all portable by one convenient source file. But I don't understand what's happening to my videos after importing.
Does SL truly apply some level of pre-publish compression? What other reason would there be for the source file being a fraction of the video(s) inserted?
Is this compression lossless, leaving the re-compressing via publish settings up the the SL author?
My curiosity is more aroused when considering that SL2 now has an option to "Support uncompressed videos in published output". How can it be that an imported video could truly go through no SL compression when the *.story file is doing something to the videos
FWIW, I do find that inserted videos, and their published results, look quite fine! I'm also, despite my inquriy, REALLY happy that the *.story file is much smaller in file size than than if there was a 1:1 size ratio.
Thanks for any insight!
This discussion is closed. You can start a new discussion or contact Articulate Support.