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Questions tagged [amr]

The Adaptive Multi-Rate audio codec or AMR for short is a patented audio data compression scheme optimized for speech coding.

140 questions
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3 answers

AMR to MP3 conversion with FFMPEG

I'm trying to convert AMR audio files to MP3 using FFMPEG. I'm running on Ubuntu 10.10 with VBox on Windows 7 host and i've installed ffmpeg by running sudo apt-get install ffmpeg I already have an AMR file that i've previously recorded so I ran the…
8vius
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How can I record AMR audio format on the iPhone?

A voice recorder doesn't need uncompressed Linear PCM audio. Compressed AMR would do fine. The iPhone framework built for recording audio is simple enough, but the only examples I've found for setting up the audio format (which come from Apple)…
Ed Marty
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1 answer

How to play .amr file on a website?

i have tried below code but not working ? does anyone play amr files in website any plugin or player which can play amr file in web
Gulshan Prajapati
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1 answer

getting error while converting wav to amr using ffmpeg

I am using ffmpeg to convert amr to wav and wav to amr.Its successfully converting amr to wav but not viceversa. As ffmpeg is supporting amr encoder decoder, its giving error. ffmpeg -i testwav.wav audio.amr Error while opening encoder for…
sohilv
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Amplifying playback volume from a local AMR file

I have an application that plays back AMR audio files that it has downloaded and cached locally. This works fine — the basic MediaPlayer does its job. However, the audio volume is generally very low, and manually increasing the volume with the…
Christopher Orr
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7
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1 answer

cordova-plugin-media: Parse ".amr" Audio File on nodejs server

I'm using the cordova-plugin-media plugin to record audio-files from android and ios devices. However, android only allows to record the file in ".amr" ending, iOS on the otherside only supports ".wav". Playing the ".wav" from the iOS device on…
nicost
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1 answer

3GP/AMR mix/merge tracks

Is there an easy way to merge 2 3gp (amr) audio files into a single audio file? I need them to be synchronous/over top of each other not one after the other. I am using android to do this. I have heard somewhere that for some audio formats you can…
Kevin
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Android AudioRecord and AudioTrack codec options?

I currently use the AudioTrack and AudioRecord classes in Android. I use the pure PCM data but I was wondering what my options are for other codecs? From this page it seems I can only encode and decode using AMR narrowband? I currently set up the…
Donal Rafferty
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0 answers

Using MediaPlayer to play an AMR file created by MediaRecorder fails with muri null

I am writing an app that records voice from the microphone in AMR format using MediaRecorder, and then plays the data back using MediaPlayer. That's the goal anyway. I am fairly confident my MediaRecorder side is working, I'm producing the data file…
djc6535
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1 answer

Detect supported audio encoders on Android to prevent crash "The given audio encoder 2 is not found"

When an Android device does not support a mandatory audio-encoder, you get: (X=numeric index of the encoder) E/MediaProfiles(4048): The given audio encoder X is not found A/AudioSource(4048): frameworks/base/media/libstagefright/AudioSource.cpp:58…
Marcus Wolschon
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1 answer

How to read and modify amr audio file data?

How can i extract information like sample rate , bit rate etc from an AMR-NB file . Strictly speaking I want the sample rate or any other data that may alter its pitch or tempo. It was easy for WAV files but here I am constrained with AMR-NB format…
user1448559
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1 answer

converting PCM-16 to AMR using AmrInputStream

I'm doing a conversion from PCM-16 to AMR using AmrInputStream. The details for the AmrInputStream can be found here http://hi-android.info/src/android/media/AmrInputStream.java.html I'm quite new to programming to while it talks about using JNI and…
Ian Low
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1 answer

MediaPlayer.setDataSource fails on AMR audio file

01-15 00:57:08.660: WARN/System.err(25286): java.io.IOException: setDataSourceFD failed.: status=0x80000000 01-15 00:57:08.660: WARN/System.err(25286): at android.media.MediaPlayer.setDataSource(Native Method) 01-15 00:57:08.660:…
plugmind
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How to convert wav file to amr in javascript?

Basically I want to record an audio. I am using recorder.js library which gives me blob data for wav file and i am converting it into a local 'audio.wav' file and storing it on device. Now I want to convert it into amr format. For that I used…
Amb
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How to convert the amr file to mp3 (or any html5 supported format) using javascript?

I have a project based on javascript.I want to play some amr files in the browser.But the amr is not supported by html5.How to convert them on the front-end or back-end?
Li Yannan
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