Downscaling
Downscaling, in playback analytics, is when a video rendition is larger than the player showing it, so the device shrinks the picture. It wastes bandwidth and money without improving what the viewer sees. A 1080p stream playing in a small embedded player is a common example.
Why it matters
Every downscaled view is bandwidth paid for and never seen. For businesses that embed small players across many pages, capping rendition size to the player can cut delivery costs with no visible change. It can also speed up starts on slower connections.
How it works
- The player compares the rendition's resolution with the size of the player on screen.
- When the video is larger than the display area, the device shrinks it to fit.
- The share of watch time spent shrunk, and the largest shrink, are logged per view.
- Teams use the data to cap the highest rendition a given player size may request.
Is downscaling bad for video quality?
No, downscaling usually does not hurt picture quality and can look slightly sharper. The problem is cost and speed. Bigger renditions use more data, start more slowly on weak networks and raise CDN bills. When a 1080p stream plays in a 400 pixel wide player, most of those pixels are never seen.
How do I stop sending more resolution than the player needs?
Cap the renditions the player may choose based on its on-screen size. Many players have a setting that limits quality to the player's dimensions. You can also serve a separate, smaller ladder for small embeds. Then check downscaling data to confirm the waste dropped without raising upscaling.
Where it's used
SaaS products and ecommerce brands that embed small players use downscaling data to cap rendition size and cut delivery costs with no visible change for viewers.
Where it usually goes wrong, and how FastPix handles it
Players often pick the highest rendition the network allows, regardless of player size, so small embeds quietly download far more data than they display.
Downscale percentage and its maximum are reported per view in FastPix Video Data, with breakdowns by page context, device and player. Embeds that receive more pixels than their size can show stand out, so they can be capped in the player.
