unique audio

In the FFmpeg ultra-detailed comprehensive tutorial---------------a sample of reading PC camera video data and sending it as a live stream with rtmp protocol is done in the camera live text, but the audio support is not implemented, so the example is further perfected in this article and the video synchronization problem of live stream is analyzed in detail. , a code example is also given. For the live stream, here only the synchronization of the send

FLV), the first four digits of the first byte represent the encoding format, equal11The description is speex encoding. The last four bytes indicate the encoding sampling rate, single channel or stereo, and each sample size is 8-bit or 16-bit.However, when using speex encoding, they are fixed and invalid data in the Protocol. The encoding sampling rate is 16 kHz, single channel, 16 bit/sample. The remaining data is the audio frame data, which can be

1:7 Mouth 8 TongueSpeakers, headphones, and earpieceIs by: Audiomanager.setmode (audiomanager.mode_in_communication)Audiomanager.setspeakerhponeon (boolean value). These two are set. But some don't seem to support it.Switch speaker and handset on the M phone cannot switchAndroid Audiotrack Audio Playback analysisWhen the audio resource is playing, there are frequent conflicts, such as when the music is play

Android Audio Analytics1 Android Audio System framework? Multimedia framework:The multimedia framework is responsible for encapsulating the playback/recording class, connecting the Android audio decoding library for audio software decoding, and connecting the high-pass Openmaxil interface. The upper app directly invoke

First of all you should know what is ape? What can ape file play with? A: Ape is a lossless compression format for audio CDs. A: It is recommended to install Plug-ins with Foobar2000,winamp (the latest version is not available) can also play, WMP install Plug-ins can also play. 　 Okay, now do the prep, you need to be prepared with the following software: 1. EAC 095 2. Monkey Audio 397 (that is, the monke

1. Basic knowledge of I2S 1.1 I2s Introduction I2S bus, the abbreviation Inter-icsound, is a bus standard developed by Philips for audio data transmission between digital audio devices, which is specially used for data transmission between audio devices and is widely used in various multimedia systems. The I2S is also a synchronous serial communication interface.

1.2.1 Common formatsCommon audio formats are: CD format, WAVE (*. WAV), AIFF, AU, MP3, MIDI, WMA, RealAudio, VQF, Oggvorbis,AAC, APE. CDThe audio quality of the CD format is relatively high. So to speak the audio format, CD is naturally the leading pioneer. In most playback software, the "hitOpen file Type ", you can see the *.CDA format, which is the CD track. S

IOS audio playback (4): Converting AudioFileSource: http://msching.github.io/blog/2014/07/19/audio-in-ios-4/preface Next, the third articleAudioStreamFileLet's talk about this article.AudioFile. AndAudioStreamFileSameAudioFileYesAudioToolBoxIn the framework, it can also complete Step 1 described in the first article, read audio format information and perform fram

The previous article recorded the RGB/YUV video pixel data processing method, this article continues the previous article the content, records the PCM audio sampling data processing method. The location of the audio sample data in the video player's decoding process is shown.This paper introduces several PCM audio sampling data processing functions as follows:Sep

At present seven cattle already have thousands of customers, you will find many of them are like know, Weico, Camera360, Mei 美图秀秀, Cicada travels and Vida such as UGC (user-generated content) category products, especially in the field of photo-Exchange. This is because, in addition to what I said earlier that "cloud storage" is more cost-efficient than traditional solutions, the seven Qiniu storage has a unique feature that allows users to upload file

Author:It168.com reny I. 3D sound effectsWith the continuous development of software and hardware, the traditional dual-channel single-layer stereo sound field cannot meet people's needs. In order to get a better three-dimensional feeling and space feeling, scientists use digital audio to generate a brand new sound-simulating 3D sound effects.In daily life, we use two ears to listen to things, obtain information from various sources, and then locate

Today see very good introduction audio development articles, reproduced Original address: http://msching.github.io/blog/2014/07/07/audio-in-ios/ Preface Music-related app development has been for some time, in the process of the app's player several changes I also therefore for iOS audio playback implementation has been a certain research. Write this series of bl

Basic knowledge about Android audio Development Let's start with a piece of gossip. Some time ago I had a sentiment: Android development is not a way to go. It is just a platform that provides many encapsulated APIs, this allows you to quickly develop applications for specific services. The real value lies in the integration of Android with specific business directions, such as Android and audio and video

iOS audio playback can be divided into short audio playback (e.g., audio effects, etc.) and long audio playback (for example: music and other main audio). The former does not need to control the progress, cycle, etc., while the latter requires precise control. Playing these

Http://article.ityran.com/archives/253 This translation is produced by tairan translation team. Please indicate the source for reprinting and inform tairan !! Translation Before I developed the iPhone, Ray had little knowledge about sound formats. I know the differences between some "WAV" and "MP3" sound formats, but I certainly cannot tell you exactly what formats "AAC" and "caf" are, I also don't know what the best way to convert audio files on Mac

IPhoneDeveloped audio 101 (Part 1): file and Data Types Translator: Xia laiyou Disclaimer (read only !) : The original translations of all tutorials provided by this blog are from the Internet and are only for learning and communication purposes. Do not conduct commercial communications. At the same time, do not remove this statement when reprinting. In the event of any dispute, it has nothing to do with the owner of this blog and the person

There is a good audio FAQ. If you have time, go up and check it out. Link: http://forum.doom9.org/showthread.php? T = 68300 The following part is reproduced: General Audio procedures FAQCross-format techniques for encoding, decoding, and playback. 1. What is the difference between lossy, lossless, and uncompressed audio formats? Uncompressed

I do not know the USB audio device class before developing the driver for the USB audio device. I thought it was a hid driver and it should be easy to develop, later, I found myself in an unknown field. Thanks to the previous development of the mass storage firmware program and the knowledge of the ov511 USB camera driver, the development was completed even though it took more time and twists and turns in t

ArticleDirectory Ashwid Structure In order to ensure the security of users, the server once required various clientsProgramBased on the unique identifier of the machine, such as MD5AlgorithmObtain a value and pass it to the server. However, I have searched the API documentation and the official msdn forum, and I have not found the function of using deviceextendedproperties. trygetvalue ("Deviceuniqueid",OutDeviceuniqueid) You can direc

Disclaimer (read only !) : The original translations of all tutorials provided by this blog are from the Internet and are only for learning and communication purposes. Do not conduct commercial communications. At the same time, do not remove this statement when reprinting. In the event of any dispute, it has nothing to do with the owner of this blog and the person who published the translation. Thank you for your cooperation! Original article link: http://www.raywenderlich.com/204/