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https://issues.apache.org/jira/browse/CB-12542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607343#comment-16607343
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ASF GitHub Bot commented on CB-12542:
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rdp edited a comment on issue #134: CB-12542: (ios) Fix wav file recording, add
m4a extension
URL:
https://github.com/apache/cordova-plugin-media/pull/134#issuecomment-419497983
For followers, the .m4a output file is "way more compressed"
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> can’t record to a “wav” file on IOS media plugin
> ------------------------------------------------
>
> Key: CB-12542
> URL: https://issues.apache.org/jira/browse/CB-12542
> Project: Apache Cordova
> Issue Type: Bug
> Components: cordova-plugin-media
> Affects Versions: 3.5.0
> Environment: 9.x Simulator , IOS 8.x device (iPod touch)
> Reporter: Leo Schubert
> Assignee: Filip Maj
> Priority: Critical
> Labels: pluginsrelease
> Attachments: cdvsound.diff
>
>
> I get “Failed to initialize AVAudioRecorder: (null)” in the error callback of
> the startRecordingAudio() exec API.
> I see that the AVAudioPlayer settings in CDVAudio.m are
> {code}
> NSDictionary *audioSettings = @{AVFormatIDKey: @(kAudioFormatMPEG4AAC),
> AVSampleRateKey: @(44100),
> AVNumberOfChannelsKey: @(1),
> AVEncoderAudioQualityKey:
> @(AVAudioQualityMedium)
> };
> {code}
> This is IMHO the reason it doesn’t work. Either one uses the .m4a extension
> with {{kAudioFormatMPEG4AAC}} or
> .wav with the {{kAudioFormatLinearPCM}} key (the IOS docs are very unclear
> about which file extensions are actually supported)
> The plugin enforces “wav” but the settings enforce the MPEG4AAC encoder.
> Using the attached simple patch and using .m4a at the JS side solves the
> problem and records on my iPod touch IOS 8.x.
> I stumbled also across
> https://github.com/remoorejr/cordova-plugin-media-with-compression where the
> exchange wav->m4a is done too.
> Strangely I can’t find much problems reported on stackoverflow, but this one
> seems to cover it
> http://stackoverflow.com/questions/12244111/failed-to-initialize-avaudiorecorder-null
> The last poster seem to indicate that the problem sneaked in in IOS 8
> (previously it was probably possible to record to a .wav file but with AAC
> content).
> Looking at the recordAudio() test for the plugin in tests/tests.js I can’t
> see that potential errors are actually causing the test to fail: they are
> just logged with console.log , so this may explain why the problem has not
> been detected by the tests.
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