![]() ![]() capture_raw_dataĬapture the raw device data. capture_mouse_clicksĬapture the screen mouse clicks. capture_cursorĬapture the mouse pointer. Default is ntsc, corresponding to a frame rate of 30000/1001. ![]() If the specified format is not supported, a list of available formats is given and the first one in this list is used instead. Request the video device to use a specific pixel format. Overrides anything given in the input filename. If set to true, a list of all available input devices is given showing all device names and indices. This is equivalent to specifying an empty device name or index.ĪVFoundation supports the following options: -list_devices noneĭo not record the corresponding media type. Select the AVFoundation default device of the corresponding type. There are two device name aliases: default , overriding any device name or index given in the input filename.Īll available devices can be enumerated by using -list_devices true, listing all device names and corresponding indices. Alternatively, the video and/or audio input device can be chosen by index using the BINDEXE> The stream has to be specified by the device name or the device index as shown by the device list. The first entry selects the video input while the latter selects the audio input. The input filename has to be given in the following syntax: -i ":]" avfoundationĪVFoundation is the currently recommended framework by Apple for streamgrabbing on OSX >= 10.7 as well as on iOS. Set the maximum number of frames to buffer. #Linux ffmpeg dev examples android#Falls back to the first available configuration reported by Android if requested framerate is not available or by default (-1). Falls back to the first available configuration reported by Android if requested video size is not available or by default. Set the video size given as a string such as 640x480 or hd720. ![]() Generally the back facing camera has index 0 while the front facing camera has index 1. The available cameras are enumerated internally and can be selected with the camera_index parameter. This device allows capturing from all cameras on an Android device, which are integrated into the Camera2 NDK API. The availability of android_camera is autodetected during configuration. This input devices uses the Android Camera2 NDK API which is available on devices with API level 24+. To see the list of cards currently recognized by your system check the files /proc/asound/cards and /proc/asound/devices.įor example to capture with ffmpeg from an ALSA device with card id 0, you may run the command: ffmpeg -f alsa -i hw:0 alsaout.wav The three arguments (in order: CARD, DEV, SUBDEV) specify card number or identifier, device number and subdevice number (-1 means any). Where the DEV and SUBDEV components are optional. The name of the device to capture has to be an ALSA card identifier.Īn ALSA identifier has the syntax: hw:] This device allows capturing from an ALSA device. To enable this input device during configuration you need libasound installed on your system. alsaĪLSA (Advanced Linux Sound Architecture) input device. The option “-devices” of the ff* tools will display the list of supported input devices.Ī description of the currently available input devices follows. You can disable all the input devices using the configure option “-disable-indevs”, and selectively enable an input device using the option "-enable-indev= INDEV“, or you can disable a particular input device using the option ”-disable-indev= INDEV". You can list all available ones using the configure option “-list-indevs”. When you configure your FFmpeg build, all the supported input devices are enabled by default. Input devices are configured elements in FFmpeg which enable accessing the data coming from a multimedia device attached to your system. Options may be set by specifying - option value in the FFmpeg tools, or by setting the value explicitly in the device AVFormatContext options or using the libavutil/opt.h API for programmatic use. In addition each input or output device may support so-called private options, which are specific for that component. Namely, an input device is considered like a demuxer, and an output device like a muxer, and the interface and generic device options are the same provided by libavformat (see the ffmpeg-formats manual). The libavdevice library provides the same interface as libavformat. This document describes the input and output devices provided by the libavdevice library. ![]()
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