Help Center/ Atlas 300 Application (Model 3000)/ DVPP API Reference/ Appendix/ Sample Usage of the DVPP Executor/ VDEC Usage
Updated on 2022-03-13 GMT+08:00
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VDEC Usage

./sample_dvpp_hlt_ddk --in_image_file dvpp_vdec_h264_1frame_bp_51_1920x1080.h264 --out_image_file h264_image --in_format 0 --test_type 3
./sample_dvpp_hlt_ddk --in_image_file dvpp_vdec_h265_1frame_mp_51_1920x1080.h265 --out_image_file h265_image --in_format 1 --test_type 3

Sample description: The preceding commands call the VDEC to decode H.264 and H.265 streams and call the VPC to generate YUV images.

  • Input video:
    • The stream has the width of 1920 pixels, height of 1080 pixels, and file name of dvpp_vdec_h264_1frame_bp_51_1920x1080.h264.
    • The stream has the width of 1920 pixels, height of 1080 pixels, and file name of dvpp_vdec_h265_1frame_mp_51_1920x1080.h265.
    • The video files are in the same directory as the executable file.
  • Output image:
    • The output image is in YUV420SP format and has the width of 1920 pixels and height of 1080 pixels.
    • For the decoding of H.264 streams, an image named h264_image* is generated in the output_dir directory. Only one image is output because the current video contains only one frame. If the video contains multiple frames, multiple images will be output.
    • For the decoding of H.265 streams, an image named h265_image* is generated in the output_dir directory. Only one image is output because the current video contains only one frame. If the video contains multiple frames, multiple images will be output.
  • You can open the h264_image* and h265_image* files by using image display software to verify the correctness.