• Fix Issue #1036: update error message for ffmpeg and add option to enable verboseOutput from ffmpeg.
  • remove -lossless 1 from webm param due to ffmpeg memory issue might cause ugoira not fully converted.
  • remove logging from ffmpeg output due to conflict with logger
• Update ffmpeg detection to return warning if ffmpeg return exit code != 0 when loading for the first time.
• Update default encoding parameter for webm and webp
  • ffmpegParam = -row-mt 1 -deadline good -crf 20 -vsync 2 -r 999 -pix_fmt yuv420p
  • webpParam = -row-mt 1 -lossless 0 -q:v 90 -loop 0 -vsync 2 -r 999

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Windows 7 users: Please install python 3.8.x and run from source code. (note: added version compiled with py3.8.10) Refer to https://github.com/Nandaka/PixivUtil2/wiki/IDE-Enviroment-(Windows) For virus issue, see #972 or you also can run it from source code Always backup your old installation!