Multimedia
The Tegra Linux Driver Package includes the multimedia framework modules for testing purposes.
For GStreamer information consult:
• Jetson TX1 Accelerated GStreamer User Guide
• Jetson TX2 Accelerated GStreamer User Guide
Multimedia API
The Multimedia API is a collection of low-level APIs that support flexible application development. These low-level APIs enable flexibility by providing better control over the underlying hardware blocks.
The Multimedia API includes:
• libargus for imaging applications
• V4L2 API for encoding, decoding, scaling, and other media functions
• NVOSD for On-Screen display
• Buffer Utility for buffer allocation, management, and sharing, transform, composition, and blending
Example applications are provided to demonstrate:
• Video decode and video encode
• Video decode and DRM based render
• Video convert
• Jpeg decode & Jpeg encode
• Image/video processing with CUDA
• Camera Jpeg capture & video record
• Camera capture & CUDA processing
• Multicamera capture with composition
• Object detection and classification with cuDNN
• TensorRT and OpenCV4Tegra usage
The Multimedia API provides another application development path for those not using a framework such as GStreamer, or for developers leveraging custom frameworks.
The Multimedia API reference is available for download at:
https://developer.nvidia.com/embedded/downloads
GStreamer-based Multimedia Playback
Use the GStreamer open source multimedia framework and the NvGstPlayer utility for testing multimedia local playback and HTTP/RTSP streaming playback use cases. The NvGstPlayer can be used as a reference implementation.
For more information about the NvGstPlayer application, refer to the ReadMe file included with the release.
Installing GStreamer
Downloand and install GStreamer directly on the target. The wrapper library, gst-openmax, is an interface between GStreamer and OpenMAX. It enables accelerated NVIDIA plug-ins in the GStreamer framework.
For more information about GStreamer, consult:
NvGstPlayer is a multimedia player test application.
Before running the NvGstPlayer and NvGstCapture applications, complete prerequisite steps and install GStreamer as directed in the README file available at:
nvgstplayer-1.0_README.tx/nvgstcapture_README.txt
Using NvGstPlayer
NvGstPlayer is a command line media file player. It plays audio/video files encapsulated in:
• MP4
• 3GP
• AVI
• ASF
• WMA
• MKV
• M2TS
• WEBM
• MOV
NvGstPlayer supports local file playback and playback over RSTP, HTTP, and UDP.
For information consult the README:
nvgstplayer-1.0_README.txt
GStreamer-based Camera Capture
NvGstCapture is a command line Camera capture appliation. NvGstCapture captures video data using a camera and encapsulate encoded Video data in the container file.
For information, consult the README:
nvgstcapture-1.0_README.txt
By default, the nvgstcapture application supports the ARGUS API using the nvarguscamerasrc plugin.
