aac

How to develop an AAC converter for Linux?

Hi, I am a beginner developer want to develop a MP3 to AAC converter for Linux. But I don't know how to start as I havn't done any development in Linux before. I am using Ubuntu 10.04. Can anyone tell me how to start and from where? What libraries do I need? Thanks ...

Can't correctly stream x264 video to mobile via RTSP

Hello! I'm creating mobile version of YouTube-like website. And i'm going to use Darwin Streaming Server for streaming low-res clips compressed with x264 and NeroAAC and hinted with MP4Box. When i'm playing it with VLC player streaming works fine, as expected. When i'm trying to open URL with my HTC Hero, it switches to player mode, the...

AAC header and other info in IPhone

Hello Everyone, I'm building an IPhone Application that records sound. I'm using Audio Queue Services, and everything works great for recording. The thing is, I'm using AudioFileWritePackets for file writing, and I'm trying to put the same "AAC + ADTS" packets to a network socket. The resulting file is different since some "headers...

HTTP pseudostreaming MP3/AAC in Flash

I've been able to implement HTTP pseudostreaming for MP4/F4V files in Flash through an Apache module and by following varous tutorials, such as http://www.code-shop.com/2007/10/18/h264-pseudo-streaming http://flowplayer.org/plugins/streaming/pseudostreaming.html This is fine. I now want to do the same with a custom-built Flash audio pl...

Audio format for stream recording: FLV or mp4?

Hello, I'm capturing microphone (speech) input and publishing it on a flash server. I want this content to eventually be able to be streamed on iPhones as well as in the browser, so I'm wondering if I should pick the FLV or mp4 format (which encodes audio as AAC). Any thoughts, or tradeoffs I should take into account regarding file size...

How do I join AAC/.m4a files via CLI (Mac OS X)

I need to quickly join a number of separate m4a files in to one large one. Is there any way to do so via CLI on in Mac OS X? ...

Convert audio-only flv to aac: ffmpeg

Hello, I can't convert a simple audio-only .flv to AAC format. The audio stream is obviously there, and I can hear it on manual playback. Are there different parameters I need to accomplish this? ffmpeg -i test.flv test.aac [flv @ 0x23b3260]Could not find codec parameters (Video: 0x0000) Input #0, flv, from 'test.flv': Duration: 00:0...

Extract AAC audio properties using Python?

What's the easiest Python library to use to extract properties from an AAC audio file (.m4a)? Specifically, I'd like to extract the following properties: Sample rate Channel count (mono or stereo) Length (in seconds) ...

Invalid ADTS sampling_frequency_index and channel_configuration why?

Hello all, I hope someone can direct me on the right path before I put a lot of time and effort on this. I'm currently trying to parse an AAC+ frame to get information such as number of channels and sample frequency. So it seems that we can simply get this information from the ADTS header but most of the time this information is inaccur...

How to manage and edit metadata of an audio file in Java.

Greetings!! I've been searching a lot about how to read the metadata of .aac file on Java, but still hasn't succeeded in finding somethong useful. I'm new in programming and I'm doing this as an assignment. The most of info I found was this: http://download-llnw.oracle.com/javase/tutorial/essential/io/fileAttr.html But I can't make a s...

Stream AAC on Android

Hi all, I'm working on an app for a client that requires streaming of an AAC audio stream. Unfortunately, there's nothing I can do about the stream format on the server. I'm working on Android and have discovered that Android's media player does not support raw AAC streams (which is what I'm getting). I found a project on Google Code...

Can I play AAC internet radio with wmp.dll in C#?

Is this possible? If yes, can you provide any information on HOW to do this? If no, are there any other possible ways to decode AAC stream in C#? ...

What is the algorithm to convert an mp3 file to a wav file?

What is the algorithm to convert an mp3 file to a wav file? Also, what is the algorithm to convert an aac file to a wav file? I have searched online everywhere but there is no reference anywhere. If someone could send me a link or a reference to a book with this information, I would much appreciate it. Thanks! ...

AVAudioRecorder File won't play except with VLC

Ok. I think I'm missing something here and I'm new to Core Audio but I have scoured the Apple documents and the rest of the web to no avail. I've also posted this same question to the apple dev forums and got no replies. I'm hoping the StackOverflow community can help me out. I'm recording audio and playing it back just fine using AVAud...

iPhone AAC/MP3 Licensing

If I use the audio decoding libraries included in iPhoneOS (ex. AVAudioPlayer). Do I still have to pay for a license from Thomson, or VIA Licensing to legally decode AAC or MP3 files in my app? ...

Audio Encoding: AAC files without the 1/10 second silence at the end of the track

Hi, I'm a little confused with an issue that I keep running into. I'm trying to create some sound loops for continuously playing, seamless background music.. everything's fine as long as I stay in AAC/ WAV/ etc, but as soon as I encode the files in AAC I run into a 1/10 of a second at end of the sound file. I'm on the Mac, so I've trie...

iPhone - How to convert aiff audio files into aac?

I'm developing an iphone app that records audio, right now it records aiff files, I need to convert these files to aac... any idea how to do this? ...

What is the smallest audio file format?

I know this is not a specific programming question but I hope someone can give me a suggestion. My applications (iPhone and Blackberry applications) use a lot of audio files. I need a solution for my applications in order to save some spaces. Is it right that .aac is the most suitable audio format for iPhone? Is it the smallest one? It...

iPhone: streaming WMA, MP3 and AAC

I need to create a simple media player that can stream internet radio stations in WMA, MP3 and AAC formats as part of a bigger app. I was wondering if someone could please give me some pointers on where to start and how to go about tackling each of these formats? never really handled this topic before.. Thanks! ...

Is the native AAC decoder available when using Android NDK?

I'm looking for a way to decode AAC natively to PCM on Android. The decoder source code is at http://android.git.kernel.org/?p=platform/external/opencore.git;a=tree;f=codecs_v2/audio/aac/dec;hb=HEAD, but I'm not familiar with NDK at all. 1) There's no way of doing this directly using the Android SDK, but can this be done via the NDK? ...