WebM produced by MediaRecorder is missing FPS and duration in the file header
Reported by
z.ba...@gmail.com,
Feb 6 2018
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Issue descriptionUserAgent: 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
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Feb 7 2018
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!
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Feb 20 2018
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.
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Feb 20 2018
Yes, this is WAI, for the same reasons explained in the README.md and by pehrsons@ in the Firefox bug. |
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Comment 1 by krajshree@chromium.org
, Feb 6 2018