Downscaled videos appear jagged and lose detail
Reported by
leoxd.m...@gmail.com,
Oct 14 2017
|
|||||
Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 Example URL: https://www.youtube.com/watch?v=HBOfTafKqy8 Steps to reproduce the problem: 1. Go to a video with small details (eg. https://www.youtube.com/watch?v=HBOfTafKqy8) 2. Select a resolution that's larger than the viewport (eg 4K video in a 480p viewport) What is the expected behavior? The video quality stays the same or gets better than viewing a matching video resolution in the viewport. What went wrong? Video starts looking jagged, details disappear (screenshots shows 2nd guitar from the left in the linked video) Did this work before? N/A Is it a problem with Flash or HTML5? HTML5 Does this work in other browsers? No MS Edge 40.15063.674.0; Firefox 58.0a1 Chrome version: 61.0.3163.100 Channel: stable OS Version: 10.0 Flash Version: Contents of chrome://gpu:
,
Oct 16 2017
Able to reproduce the issue on the reported chrome version stable 61.0.3163.100 and it also be seen on firefox. It's not specific to chrome browser, adding appropriate labels for further triage. Thanks!
,
Oct 16 2017
IIRC this is the best that we can get with the GL_LINEAR scaling we specify, to do better we'll have to switch to a custom shader for scaling.
,
Oct 20 2017
I think this is working as intended. A higher-quality downscale could increase power and reduce performance, so I'm not sure that it's an easy decision to just use a higher quality scaler.
,
Jun 4 2018
|
|||||
►
Sign in to add a comment |
|||||
Comment 1 by nyerramilli@chromium.org
, Oct 16 2017