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  1. Moodle
  2. MDL-83570

Audio bitrate configuration owned by tiny_recordrtc can lead to potential bug

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    • Team Hedgehog 2024 Review 4, Team Hedgehog 2024 Sprint 4.1

      In MDL-78349, a bug was discovered where users could input an audio bit rate too low for the audio processor/converter. It was proposed that a select menu with a range of valid bit rates could be used in place of a the current free-entry number that could have invalid values inputted by the user.

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      Why change the input text to the select field?

      Audio bitrate configuration owned by tiny_recordrtc can lead to potential bug.

      If users set the audio bit rate to a non-supported value, such as 1000, Firefox will display an error in the console, while Chrome will create the recorded audio file successfully, but it will have no sound. I tested this on Ubuntu 24.04.

      The minimum bit rate threshold varies depending on the audio format. During my tests with Firefox version 131.0.3, which uses the audio/Ogg format, I found that the minimum supported value is 24000. In Chrome 129.0.6668.70, which uses the audio/MP4 format, the minimum supported value is 2400.

      Due to these differences, the input from a text field was changed to a select field, offering options that support both Ogg and MP4 audio formats.

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            meirza.arson@moodle.com Meirza
            meirza.arson@moodle.com Meirza
            David Woloszyn David Woloszyn
            Safat Shahin Safat Shahin
            Kim Jared Lucas Kim Jared Lucas
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