[ARCHIVED] audio quality issues

[mike_harack]

Audio quality when rendering videos through PPT is already compressed, but after uploading to Canvas I have started to notice it gets much worse. It is not really acceptable, with a slight crackle or distortion surrounding everything being said (due to over compression). I tested this extensively, and this distorton is not present in the videos before being uploaded. I checked my videos on canvas from the previous semester, and I can now hear it there as well. Once heard it is hard to unhear it.

I understand saving space is an issue, but I have found no options on Canvas itself for leaving the videos as they are rather than re-encoding them for the site, which is quite frustrating. 

I then bought a 100 dollar mic, it sounded great, but still sounded bad after uploading new videos to Canvas. I then dusted off my old copy of powerpoint 2007, which allowed you to record at near lossless levels of quality, but sure enough those recordings sounded just 'ok' after being uploaded to Canvas.

Yes, I could use other software for recording videos. But powerpoint, though clunky, allows you to save recordings slide by slide, or move them around, without having to restart the entire recording. If anyone has other suggestions for fixing this in Canvas, or for software that allows this (and the ability to record lossless audio) I am all ears.

[SEAN2E]

Hey Mike,

I had a similar question that has never been answered by Canvas (Search PowerPoint Video Audio Trouble). My guess is that a lot of people have had this problem. I know it happens because of the way the files are rendered between each platform. I don't think there is a way to solve it, unless Microsoft and Canvas decide to find a fix together--which isn't really in Canvas' best interest--since they use a different video software. I did find a workaround, though. After I export from PowerPoint, and create my MP4, I upload the video to another video editing website. I have tried a few and only some of them work. Because I have always been annoyed at the slowness of my voice, I chose one that let me edit the speed of my video. The one I am using is called Clideo. I pay for it so that I don't have a watermark but I think it has a free version, as well. When I finish editing the video, it actually still does the exact same thing that Canvas does (crackling popping sound) while in Clideo. However, when I download the video to my computer, and then up onto Canvas, the crackling is gone (both on my computer and on Canvas). I know this isn't perfect but I have the same concern as you--wanting to use PowerPoint so that I might be able to change videos later on. This is the best I could do. It took me forever to figure out.