VCU Encoder - 2023.1 English

H.264/H.265 Video Codec Unit v1.2 Solutions LogiCORE IP Product Guide (PG252)

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2023.1 English

Input sources may contain several resolutions:


Maximum resolution must be known. You can only change the resolution; changing the chroma mode or bit-depth is not allowed.


AL_Encoder_SetInputResolution:Maximum resolution is specified in channel parameters.

Refer to the API section for more details on new APIs. Provide multiple resolution files in the .cfg file in the following format:

[INPUT] #-------------------------------------------------
YUVFile          = input_1.yuv
Format           = NV12
Width           = 1920
Height           = 1080
CmdFile          = input_cmd.txt
[DYNAMIC_INPUT] #-------------------------------------------------
YUVFile          = input_2.yuv
Width           = 720
Height           = 480

Provide the number of frame index for input and variable fps parameters (for DRC with variable FPS) in the input_cmd.txt file.

50: Fps=30, Input=1
90: Fps=60, Input=2

Use the following command to generate an output file that contains an encoded file containing various resolutions.

ctrlsw_encoder -cfg test.cfg -o output

DRC Encode: Checking encoder use case for DRC using transcoding of DRC file which is encoded at the control software level, use:

gst-launch-1.0 filesrc location=test.avc ! h264parse ! omxh264dec low-latency=0 internal-entropy-buffers=9 ! queue max-size-bytes=0 ! omxh265enc target-bitrate=50000 ! video/x-h265, profile=main, alignment=au ! filesink location=test_out.hevc
Note: In case of Gstreamer level, the encoded file should have the first resolution as the maximum resolution of the stream.