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DeepStream GStreamer Plugins

This directory contains source code for all DeepStream GStreamer plugins. Each plugin is a self-contained GStreamer element that integrates with the DeepStream metadata pipeline.

For build and installation instructions, see build/BUILD.md.

Plugin Index

Inference

Plugin	Element Name	Description
`gst-nvinfer`	`nvinfer`	TensorRT-based inference for object detection, classification, and segmentation. Primary and secondary GIE modes. See README.
`gst-nvinferserver`	`nvinferserver`	Triton Inference Server-based inference. Supports TensorRT, ONNX, TF, PyTorch backends. See README.
`gst-nvdspreprocess`	`nvdspreprocess`	Custom pre-processing (resize, normalize, crop) on batched frames before inference. See README.
`gst-nvdspostprocess`	`nvdspostprocess`	Custom post-processing on inference output tensors. See README.

Stream Input / Multiplexing

Plugin	Element Name	Description
`gst-nvurisrcbin`	`nvurisrcbin`	URI-based source bin — decodes and batches a single stream. See README.
`gst-nvmultiurisrcbin`	`nvmultiurisrcbin`	Multi-URI source bin — manages multiple streams and sends them to nvstreammux. See README.
`gst-nvmultistream2`	`nvstreammux` / `nvstreamdemux`	Batch multiple decoded streams into a single buffer; demux back to individual streams. See README.
`gst-nvdynamicsrcbin`	`nvdynamicsrcbin`	Dynamic source bin — add and remove video sources at runtime without stopping the pipeline. See README.
`gst-nvvideotestsrc`	`nvvideotestsrc`	NVMM-backed test video source for pipeline testing without a real input. See README.

Tracking and Analytics

Plugin	Element Name	Description
`gst-nvtracker`	`nvtracker`	Multi-object tracker. Supports NvDCF, DeepSORT, IOU, and custom tracker libraries. See README.
`gst-nvdsanalytics`	`nvdsanalytics`	Line-crossing counting, ROI filtering, and direction detection analytics. See README.
`gst-nvdewarper`	`nvdewarper`	Dewarps fisheye and 360° camera feeds into perspective or panoramic views. See README.
`gst-nvof` (via nvdsvideotemplate)	—	NVIDIA Optical Flow SDK integration for motion estimation.

On-Screen Display and Metadata

Plugin	Element Name	Description
`gst-nvdsosd`	`nvdsosd`	Renders bounding boxes, labels, and custom OSD metadata onto frames. See README.
`gst-nvdsmetautils`	—	Metadata serialization utilities (SEI, video/audio metadata embedding). See README.
`gst-nvdsmetamux`	`nvdsmetamux`	Merges metadata from multiple inference branches into a single stream. See README.

Cloud Messaging

Plugin	Element Name	Description
`gst-nvmsgbroker`	`nvmsgbroker`	Publishes DeepStream metadata to cloud endpoints (Kafka, MQTT, Azure IoT Hub, AMQP). See README.
`gst-nvmsgconv`	`nvmsgconv`	Converts DeepStream object metadata to a payload schema for nvmsgbroker. See README.

Image and Video Utilities

Plugin	Element Name	Description
`gst-nvimage`	`nvimgdec` / `nvimgenc`	GPU-accelerated image encode and decode. See README.
`gst-nvreplay`	`nvreplay`	Seek and replay support for recorded streams. See README.

Extensibility Templates

Plugin	Element Name	Description
`gst-nvdsvideotemplate`	`nvdsvideotemplate`	Template plugin for custom video processing; ships with example custom libs. See README.
`gst-dsexample`	`dsexample`	Reference example plugin demonstrating CPU-based custom processing. See README.
`gst-dsexample-cuda`	`dsexample` (CUDA)	Reference example plugin demonstrating GPU-based custom processing with CUDA. Requires OpenCV 4.x with CUDA. See README.

Networking

Plugin	Element Name	Description
`gst-nvdsudp`	`nvdsudp`	UDP-based transport for DeepStream metadata. Requires Rivermax SDK. See README.