Note

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Video Demo

Introduction

This example demonstrates how to use the K230’s video codec module (VENC/VDEC) to implement video encoding and decoding functions.

Function Description

VENC Function

Video encoding module functions:

• Encoding Format Support: Supports H.264, H.265 and other formats

• Resolution Configuration: Supports multiple resolutions

• Bitrate Control: Supports CBR, VBR and other bitrate control modes

• Frame Rate Setting: Configurable output frame rate

• GOP Configuration: Supports GOP size setting

VDEC Function

Video decoding module functions:

• Decoding Format Support: Supports H.264, H.265 and other formats

• Hardware Acceleration: Hardware-accelerated decoding

• Multi-channel Decoding: Supports simultaneous multi-channel decoding

• Frame Output: Direct output to VO display

Code Location

Demo source code location: src/rtsmart/examples/mpp/sample_venc

Usage Instructions

Compilation Method

In the K230 RTOS SDK root directory, use make menuconfig to configure compilation options, select to compile the Video example into the firmware, and then compile the firmware.

Running the Example

./sample_venc.elf [options]

Parameter Description

Parameter Name	Description	Default Value
Encoding Type	h264/h265	h265
Width	Image width	1920
Height	Image height	1080
Frame Rate	Frame rate	30
Bitrate	Encoding bitrate	4000

Viewing Results

After the program runs, it will:

1. Initialize the video encoder

2. Configure encoding parameters

3. Start encoding loop

4. Output the encoded bitstream

Output example:

Video Encoder Demo
=================

Initializing VENC module...
VENC initialized successfully

Configuring encoder...
Codec: H.265
Resolution: 1920x1080
Frame rate: 30fps
Bitrate: 4000Kbps

Starting encoding...
Encoding frames...
Frame 1 encoded
Frame 2 encoded
Frame 3 encoded
...

Encoding statistics:
Total frames: 1000
Total bytes: 52428800
Bitrate: 4000Kbps (actual)

Press Ctrl+C to stop.

Tip

Video encoding and decoding is a core function of multimedia processing, and appropriate encoding parameters need to be selected based on actual application scenarios. For the specific interface of the video encoding and decoding module, please refer to Video Encoding and Decoding API Documentation.