Capture

Multimedia Capture

Easily integrate real-time video and audio capture into your application.

The LEADTOOLS Multimedia product line has everything you need to build a powerful multimedia capture application.

The list of LEADTOOLS Multimedia Capture functionality includes:

Capture directly to a file or save images individually to memory.
Enumerate and select all available audio/video devices on the machine programmatically.
Output compressed and uncompressed AVI, Windows Media content, OGG, DVSD OGG, WAVE, MPEG-1 Audio (MP3), MPEG-1 System, MPEG-2 Program, ISO and MPEG-2 DICOM, DVD *, and Network ** formats.
Video preview supports zooming: (Fit to window, stretch, 50%, 75%, 100%, 200%, and full screen)
Full support for TV tuners.
Programmatically change channels.
Programmatically change the video input sources including the TV Tuner, S-Video or composite video.
Support for capturing live streaming video and audio from memory for all of your streaming video and audio needs.
Ability to compress the audio/video stream while capturing.
Capture and save still bitmaps from the video stream with control over format and quality. Images can be saved to file or memory.
Support for analog video capture devices configuration.
Flicker-free video and audio preview during capture.
Capture preview supports three kinds of preview images
- as images come from the capture card, but before any video processors or compressors are applied.
- after the video processors have been applied, but before the compressor is applied.
- after the video processors and compressors are applied.
Pause during capture.
Use the audio source built into the video device (common in many webcams) or any other available DirectShow audio source.
Support for close captioning.
Built-in configuration dialogs allow you to easily configure the capture devices. LEADTOOLS can display TV Tuner, crossbars and video capture pins and audio capture properties all in one dialog.
Enumerate and select available capture sizes programmatically during capture.
Obtain statistics during capture such as number of frames captured and dropped.
Support for video and audio processing DirectShow or DirectX filters.
Camera control (Brightness, Contrast, Zoom, Pan, etc).
Incoming video signal adjustment using the VideoProcAmp interface properties. This includes Brightness, Contrast, Gamma, Hue, etc.
Save capture settings to files and streams. These settings can include the selected processors, compressors, devices, and controls.
Multiple capture modes:
- Streaming video and audio.
- Automatically triggered video frame sequences with or without audio.
- Manually triggered video frame sequences with or without audio.
- Still images.
- Mask.
- Inhibit Run.
Built-in support for generic multiplexers and renderers. Multiplexers are filters that combine two or more streams of data. For example, LEADTOOLS Multimedia can create MPEG2 files using our LEAD MPEG2 Multiplexer and LEAD MPEG2 Encoder.
Create DV AVI files with the use of a DV multiplexer.
Capture audio from DV devices without splitting the audio and video data (unless specified), resulting in faster capture and fewer dropped frames.
Put data into a DV device: Download the video from a DV device, cut unwanted pieces and put the good portion back into the DV device.
Control DV tape functions such as play, pause, rewind, fast forward and record programmatically.
Read and seek DV devices based on timecode information.
Adjust the amount of time the sound is buffered during capture to synchronize video and audio previews.
Display capture device properties without stopping the capture.
Editing mode: Change capturing configuration without rebuilding the graph. This speeds up the graph modification.
Control the interleaving mode when writing AVI files.

A few examples of applications that take advantage of the above functionality:

Create Slingbox type applications for streaming TV content from a server and controlling the TV remotely.
Create PC based security applications. Possible functionality includes recording video when movement is detected (LEAD Motion Detection Filter) or recording audio when a noise is detected (LEAD Audio Detection Filter). Using LEAD's streaming technology, security cameras can also be monitored remotely.
Create an ATM video capturing system. Start recording when a person approaches the ATM kiosk and stop when the person leaves using our LEAD Motion Detection Filter.
Create NetMeeting type video conferencing and text messaging applications by capturing the live video from a camera and streaming it to connected clients.
Create applications that sample, grab and copy streaming audio and video to a file.
Create software for streaming audio and video hosting servers and sites.
Create software that accepts feeds from digital video cams for online live video streaming.
Create applications to capture video and audio from interlaced and progressive scanning digital camcorders.
Create computer based video recording applications.