Video Demo#

Overview#

This example demonstrates how to use the K230 video encode/decode modules (VENC/VDEC) to perform video encoding and decoding.

Functional Description#

VENC Features#

The video encoder path provides:

support for formats such as H.264 and H.265
configurable output resolution
bitrate control modes such as CBR and VBR
configurable output frame rate
GOP size configuration

VDEC Features#

The video decoder path provides:

support for formats such as H.264 and H.265
hardware-accelerated decoding
multi-stream decode capability
direct output to VO display

Source Location#

Demo source path: src/rtsmart/examples/mpp/sample_venc

Usage#

Build#

At the root of K230 RTOS SDK, use make menuconfig to enable the Video example in the firmware build, then build the firmware.

Run#

./sample_venc.elf [options]

Parameters#

Parameter	Description	Default
codec type	`h264` / `h265`	`h265`
width	image width	`1920`
height	image height	`1080`
frame rate	output frame rate	`30`
bitrate	encoding bitrate	`4000`

Expected Result#

After the program starts, it will:

initialize the video encoder
configure the encoding parameters
start the encoding loop
output the encoded bitstream

Example output:

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 encode/decode is one of the core parts of the media stack. Choose encoding parameters according to the actual application scenario. For detailed interfaces, refer to the Video Encoder/Decoder API documentation.