Provided by: etc1tool_8.1.0+r23-1_amd64
etc1tool - ETC1 conversion tool
etc1tool infile [–help | –encode | –encodeNoHeader | –decode] [–showDifference difffile] [-o outfile]
etc1tool is a command line utility that lets you encode PNG images to the ETC1 compression standard and decode ETC1 compressed images back to PNG. Default is –encode
infile The input file to compress. –help Print this usage information. –encode Create an ETC1 file from a PNG file. –encodeNoHeader Create a raw ETC1 data file (without a header) from a PNG file. –decode Create a PNG file from an ETC1 file. –showDifference difffile Write difference between original and encoded image to difffile. (Only valid when encoding). -o outfile Specify the name of the output file. If outfile is not specified, the output file is constructed from the input filename with the appropriate suffix (.pkm or .png).
The Android Open Source Project. ETC1TOOL(1)