dec_avc_au

dec_avc_au

The dec_avc_au sample shows how to decode a H.264 stream. The sample uses sequence of files to simulate a stream of H.264 Access Units and a Transcoder object to decode the H.264 Access Units to raw YUV video frames.

Command Line

./dec_avc_au --input <directory> [--output <file>] [--frame <width>x<height>] [--rate <fps>] [--color <COLOR>] [--colors]

Examples

List options:

./bin/x64/dec_avc_au --help
Usage: dec_avc_au --input <directory> [--output <file>] [--frame <width>x<height>] [--rate <fps>] [--color <COLOR>] [--colors]
  -?,    --help
  -i,    --input    input directory (contains sequence of compressed file)
  -o,    --output   output YUV file
  -f,    --frame    frame size, <width>x<height>
  -r,    --rate     frame rate
  -c,    --color    output color format. Use --colors to list all supported color
                    formats
         --colors   list COLOR constants

The following command extracts the H.264 Access Unit files from the assets/vid/foreman_qcif.h264.au directory and decodes them to raw video frames. The decoded video is written to output/dec_avc_au/decoded_176x144.yuv:

mkdir -Force -Path ./output/dec_avc_au

./bin/x64/dec_avc_au `
  --input ./assets/vid/foreman_qcif.h264.au `
  --output ./output/dec_avc_au/decoded_176x144.yuv `
  --color yuv420