Audio and Video

Read and write video and audio files; Record and play audio

Use audio and video functions to read and write video or audio files, and also record and play audio using your system's input and output devices.

Read or write video files by creating video objects. The video object contains information about the video file and enables you to read, analyze, and write video data.
Read or write audio data from files into arrays using the audio read and write functions.
Record or play audio files in with your system's input (microphone) and output devices (speakers) by using the audio recorder and player objects.

Functions

`录像师`	读视频文件创建对象
`read`	Read one or more video frames
`readFrame`	Read next video frame
`哈斯弗雷姆`	Determine if video frame is available to read
`getFileFormats`	File formats that`录像师`supports
`mmfileinfo`	Information about multimedia file

`VideoWriter`	Create object to write video files
`open`	Open file for writing video data
`writeVideo`	Write video data to file
`close`	Close file after writing video data
`getProfiles`	Profiles and file formats that`VideoWriter`supports

`audioread`	Read audio file
`audiowrite`	Write audio file
`lin2mu`	Convert linear audio signal to mu-law
`mu2lin`	Convert mu-law audio signal to linear
`audioinfo`	Information about audio file

`audioplayer`	Object for playing audio
`isplaying`	Determine if playback is in progress
`pause`	暂停播放或录音
`play`	Play audio from`audioplayer`object
`playblocking`	Play audio from`audioplayer`object, hold control until playback completes
`resume`	Resume playback or recording from paused state
`stop`	停止播放或录制

`audiorecorder`	Object for recording audio
`getaudiodata`	Store recorded audio signal in numeric array
`getplayer`	Creates associated`audioplayer`object
`isrecording`	Determine if recording is in progress
`record`	Record audio to`audiorecorder`object
`recordblocking`	Record audio to`audiorecorder`object, hold control until recording completes

`audiodevinfo`	Information about audio device
`audiodevreset`	Refresh list of available audio devices
`sound`	Convert matrix of signal data to sound
`soundsc`	Scale data and play as sound
`哔哔的声音`	Produce operating system beep sound

Read Video Files
Read frames from a video starting at a specific time or frame index, read frames within a specified interval, or read all the frames in the video.
Convert Between Image Sequences and Video
Convert between video files and sequences of image files using录像师andVideoWriter.
Read and Write Audio Files
Write data to an audio file, get information about the file, and then read the data back into the MATLAB^®workspace.
Record and Play Audio
记录并播放系统上的音频数据，以便从系统上的音频输入和输出设备在MATLAB中处理。
Supported Video and Audio File Formats
Video and audio files in MATLAB and their supported file formats and codecs.