New issue
Advanced search Search tips
Note: Color blocks (like or ) mean that a user may not be available. Tooltip shows the reason.

Issue 809379 link

Starred by 1 user

Issue metadata

Status: WontFix
Owner: ----
Closed: Feb 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug



Sign in to add a comment

WebM produced by MediaRecorder is missing FPS and duration in the file header

Reported by z.ba...@gmail.com, Feb 6 2018

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36

Steps to reproduce the problem:
Use MediaRecorder to record video and audio and save as WebM file.

What is the expected behavior?
The created WebM file' header is missing the duration or fps values.

What went wrong?
The WebM file should include proper fps and duration values in its header.

Did this work before? No 

Does this work in other browsers? No
 https://bugzilla.mozilla.org/show_bug.cgi?id=1435953

Chrome version: 64.0.3282.140  Channel: stable
OS Version: OS X 10.13.3
Flash Version: Shockwave Flash 28.0 r0
 
TestEntry (8).webm
1.1 MB View Download
Labels: Needs-Triage-M64
Cc: vamshi.k...@techmahindra.com
Labels: Triaged-ET Needs-Feedback
Unable to reproduce the issue on reported chrome version 64.0.3282.140 and on the latest canary 66.0.3342.0 using Mac 10.13.1 with the below mentioned steps.
1. Launched chrome
2. Opened DevTools then clicked Esc to open console->Rendering
3. Checked the Rendering option
We are able see the FPS while playing the video. Attaching the screen cast of the same.

@Reporter: Could you please check the screen cast and let us know if we have missed any steps while reproducing the issue. Any further inputs from your end may help us to triage the issue in a better way.

Thanks!
809379.mp4
1.7 MB View Download
Components: -Blink>Media Blink>MediaRecording
Seems to be on purpose according to 
https://chromium.googlesource.com/chromium/src/+/HEAD/third_party/WebKit/Source/modules/mediarecorder/README.md#the-produced-recording-doesn_t-have-duration-or-is-not-seekable but I will let the Media Recording team decide what to do with the bug.

Comment 4 by mcasas@chromium.org, Feb 20 2018

Status: WontFix (was: Unconfirmed)
Yes, this is WAI, for the same reasons explained in the README.md and by
pehrsons@ in the Firefox bug.

Sign in to add a comment