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Issue 776678 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Oct 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug



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Sampling rate meta-data in information header will affect the playback of Oga audio files

Reported by lesleyde...@gmail.com, Oct 20 2017

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36

Example URL:

Steps to reproduce the problem:
The original file is an Oga audio file with sampling rate 48.
The altered file is generated by altering the corresponding meta-data bits in the information header at the beginning of this file. In this file the altered bits represents a number larger than the original 48.

Here the html file directs to those 2 files. 
Place the html and audio files in websites and change the relative src. 
Open the html in Chrome.

What is the expected behavior?
Either report the altered file as invalid input (Firefox), or play it correctly according to audio stream and other headers.

What went wrong?
Both duration displayed and the speed of playback is affected by the altered information header. Since the altered sampling rate meta-data represents a larger number then the original, the duration is shorten and the speed is accelerated.

Did this work before? N/A 

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? N/A

Chrome version: 62.0.3202.62  Channel: stable
OS Version: 10.0
Flash Version: 

Contents of chrome://gpu:
 
test-oga-hsr.html
794 bytes View Download
test-oga-hsr.PNG
13.3 KB View Download
altered-oga-sr.oga
1.2 MB Download
original-oga-sr.oga
1.2 MB Download
Labels: Needs-Triage-M62
Status: WontFix (was: Unconfirmed)
ffmpeg doesn't think there's anything wrong with the file, so neither does Chrome. If you think ffmpeg should reject playback, please file an issue with them.

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