aac

This is a follow-up question from my previous question asked here , where I needed to look for silence within a specific audio track. Here is the ffmpeg life-saver solution where helps to get some metadata: ffmpeg -i file -map 0:a:1 -af astats -f null - But I have other type of input .mp4 files where they have one single track of 8 (i.e. 7.1) audio channels. Apparently these files are transcoded from an original file (somehow the 4 track stereos are squished into these files). Now similar to my previous, I need to know if the original file was 2-channel stereo or 5.1 (6) channel. How to know

I'm using the Android MediaRecorder to record AAC encoded audio files. Setting the output format to MPEG-4 worked pretty well. But as my audio player supports neither MPEG-4 nor 3GP I tried to get raw AAC files by using the output format AAC_ADTS , which is supported by Android since API level 16. mRecorder = new MediaRecorder(); mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mRecorder.setOutputFormat(MediaRecorder.OutputFormat.AAC_ADTS); mRecorder.setOutputFile(mFileName); mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); Here is where I got stuck. The MediaRecorder created

According to changes for kitakt 4.4 there were some problems with playing shoutcast streams (those returning "ICY" instead of "HTTP/1.x" response). So solution for kitkat was to reregister "icy" protocol prefix in JVM once before we opened a stream by this: try { java.net.URL.setURLStreamHandlerFactory( new java.net.URLStreamHandlerFactory(){ public java.net.URLStreamHandler createURLStreamHandler( String protocol ) { Log.d( LOG, "Asking for stream handler for protocol: '" + protocol + "'" ); if ("icy".equals( protocol )) return new com.spoledge.aacdecoder.IcyURLStreamHandler(); return null; }

I am recording audio from mic and save it to .mp4 - it is AMR format. How to convert this audio to mp3 or AAC? I saw this post and I did not understand it - I am new in android. Is there some easy library for android that can work with mp3? I googled whole day and not found nothing. Maybe some good man can explain and give full example in this post and hundreds of people will be grateful! Thank you. Nathan Tornquist You could do that with http://www.javazoom.net/mp3spi/mp3spi.html probably. I am not sure where you were looking for help, but there are tons of articles on StackOverflow about

I have made a small application to extract audio from an mp4 file, or simply convert an existing audio file to AAC/mp4 format (both raw AAC, or inside mp4 container). I have run this application with existing mp4 files as input, and it properly extracts audio, and encodes to mp4 (audio only:AAC), or even directly in AAC format (i.e. test.aac also works). But when I tried running it on mp3 files, output clip plays faster than it should be (a clip of 1:12 seconds plays back till 1:05 seconds only). Edit: I have made improvements in code - now, it no longer plays back faster, but is still only