Best Way to Avoid Blurry Videos

We ran into a similar issue and found a round about. Try following these steps: 

1. Publish your course as a SCORM output.

If your SCORM file is zipped, unzip the file.

2. Locate the Video output in the SCORM package (I suppose it should be inside the External Content folder)

3. Replace the Video output with your actual video. Make sure you change the name of the video you are replacing as the name of the video that is present in the External Content folder.

4. Open the HTML file and you will see your video running with the actual video quality.

Important note: Videos published using Articulate are compressed; when you follow the aforementioned steps, you are using video files in their original form with no compression. This results in increased size of your SCORM package. And that's a con.