Dati audio e video

Leggere e scrivere file video e audio; registrare e riprodurre audio

Leggere o scrivere file video o audio, registrare e riprodurre audio utilizzando i dispositivi di input e output del sistema.

Leggere o scrivere file video creando oggetti video. L'oggetto video contiene informazioni sul file video e consente di leggere, analizzare e scrivere dati video.
Leggere o scrivere dati audio da file in array utilizzando le funzioni di lettura e scrittura audio.
Registrare o riprodurre file audio con i dispositivi di input (microfono) e di output (altoparlanti) del sistema, utilizzando gli oggetti registratore e lettore audio.

Attività di Live Editor

Import data from a file in the Live Editor (Da R2023a)

`VideoReader`	Create object to read video files
`read`	Read one or more video frames
`readFrame`	Read next video frame
`hasFrame`	Determine if video frame is available to read
`getFileFormats`	File formats that `VideoReader` 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`	Pause playback of `audioplayer` object or recording of `audiorecorder` object
`play`	Play audio from `audioplayer` object
`playblocking`	Play audio from `audioplayer` object; hold control until playback completes
`resume`	Resume playback of `audioplayer` object or recording of `audiorecorder` object from paused state
`stop`	Stop playback of `audioplayer` object or recording of `audiorecorder` object

`audiorecorder`	Object for recording audio
`getaudiodata`	Store recorded audio signal in numeric array
`getplayer`	Create 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 (Da R2020b)
`sound`	Convert matrix of signal data to sound
`soundsc`	Scale data and play as sound
`beep`	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, and read all the frames in the video.
Convert Between Image Sequences and Video
Convert between video files and sequences of image files using VideoReader and VideoWriter.
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
Record and play audio data for processing in MATLAB from audio input and output devices on your system.
Supported Video and Audio File Formats
Video and audio files in MATLAB and their supported file formats and codecs.