support for rewinding HTML5 videos




4 years ago
2 years ago


(Reporter: estellnb, Unassigned)


({html5, testcase})

38 Branch
html5, testcase

Firefox Tracking Flags

(Not tracked)





4 years ago
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Firefox/38.0
Build ID: 20150513174244

Steps to reproduce:

View with three different browsers.

Actual results:

While the rewind function worked well with Safari and Qupzilla it does not work with Firefox, yet.

Expected results:

It would be very nice if Firefox supported scrolling back HTML5 videos via setting a negative playback speed by Javascript.

Comment 1

4 years ago
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:41.0) Gecko/20100101 Firefox/41.0
Build ID: 20150521030204
Browser Console says

which points to
  video.playbackRate = rate;
Blocks: 495040
Component: Untriaged → Video/Audio
Keywords: html5, testcase
OS: Unspecified → All
Product: Firefox → Core
Hardware: Unspecified → All
Component: Audio/Video → Audio/Video: Playback

Comment 2

4 years ago
not yet implemented for Firefox 40.0.3, MacOS Yosemite 10.10.5.

Comment 3

2 years ago
Someone knows when it will be fixed? we are waiting this working. Thanks in advance

Comment 4

2 years ago
This is still failing to me, please in which version will be fixed? is it in your plans to fix in the upcoming versions?, I'm blocked :'(
Flags: needinfo?(bwu)
As far as I can see, I don't find many websites using negative playback speed. However, I could be wrong. Please share them with me if you find some or there are other use cases you need to use negative playback speed. Thanks.
Flags: needinfo?(bwu)
Priority: -- → P3
Make it as P5 before we can better know the values user can get.
Priority: P3 → P5
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