..
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   NVIDIA CORPORATION and its licensors retain all intellectual property
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.. _VideoEncoderExtension:

VideoEncoderExtension
---------------------
NVIDIA GXF component for H.264 video encode.
The video encoder GXF extension is based on V4L2 APIs.
It uses the hardware video encode engine on the platform by interfacing with V4L2 APIs.
It gives out elimetary H.264 bit stream.

* UUID: ea5c44e4-15db-4448-a3a6-f32004303338
* Version: 0.0.1
* Author: NVIDIA
* License: Proprietary

Components
~~~~~~~~~~~~

nvidia::gxf::VideoEncoder
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Encode ``H.264`` video streams using ``V4l2`` APIs.

* Component ID: b0661bf2-7ef2-47f5-a271-0b0931339ba6
* Base Type: nvidia::gxf::VideoEncoder

Parameters
++++++++++++

**input_frame**

Receiver to get the input video Buffer(input frame data)

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_HANDLE
* Handle Type: nvidia::gxf::Receiver

|

**output_transmitter**

Transmitter to publish the compressed data(output tensor)

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_HANDLE
* Handle Type: nvidia::gxf::Transmitter

|

**pool**

Memory pool for allocating output data(tensor).

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_HANDLE
* Handle Type: nvidia::gxf::Allocator

|

**inbuf_storage_type**

Input buffer storage type

Valid values:

  0: Host memory

  1: Device memory

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32

|

**outbuf_storage_type**

Output buffer storage type

Valid values:

  0: Host memory

  1: Device memory

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32

|

**Device**

Path to the V4L2 device,

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_STRING
* Default: "/dev/nvidia0"

|

**codec**

Video codec to be used

Valid values:

  0: H.264 codec

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32
* Default: 0

|

**input_height**

Input frame height

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_UINT32

|

**input_width**

Input frame width

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_UINT32

|

**input_format**

Input frame color format

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_STRING

Valid values:

  nv12pl: NV12(YUV420) pitch linear format

|

**profile**

Encode profile

Valid values:

  0: Baseline Profile

  1: MainProfile

  2: High Profile

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32

|

**bitrate**

Bitrate of the encoded stream, in bits per second

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32
* Default: 20000000

|

**framerate**

Frame rate (frames per second)

* Flags: GXF_PARAMETER_FLAGS_NONE
* Type: GXF_PARAMETER_TYPE_INT32
* Default: 30