No one likes a blurry, opaque stream - in nature, or in their video.
Reducing video file size important, but not at the cost of video quality. Test your transcoded video against the original file to measure the change in quality.
To test the video quality of your video, you need the original video (the reference), and the transcoded video.
Enter the urls of both videos below, and we'll calculate 3 common video quality metrics for you.
Structural Simularity (SSIM): Wikipedia
Perceived Signal to Noise Ratio (PSNR): Wikipedia
Video Multimethod Assessment Fusion (VMAF): Wikipedia
In general, higher numbers are better.
Built by Doug Sillars
Code on Github
Hosted on a small EC2 instance, so calculations are queued and slow.