Weekly Platform News: Layout Shifts, Stalled High-Bitrate Videos, Screenshots in Firefox
CSS - Tricks
SEPTEMBER 26, 2019
If you serve videos for your website from your own web server, keep an eye on the video bitrate (the author suggests FFmpeg and streamclarity.com ). via Doug Sillars ). Based on the "startTime" and "value" numbers in the data, use WebPageTest’s filmstrip view to pinpoint the individual layout shifts and identify their causes.
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