ffmpeg_cli 0.2.0

ffmpeg_cli: ^0.2.0 copied to clipboard

New runner, new filters, filter updates

• Split single command into FfmpegCommand.simple and FfmpegCommand.complex, per FFMPEG documentation
  • A simple command has a single pipe of filters
  • A complex command has an entire graph of filters
• New filters
  • SubtitleFilter
• Adjusted filters
  • Renamed RawFilter to CustomFilter
  • A number of filters had properties added or adjusted

• Ffmpeg and FfmpegCommand - executes FFMPEG CLI commands from Dart
• FfmpegBuilder - (optional) builder that constructs FfmpegCommands, making it easier to correlate stream IDs
• Ffprobe - partial support for the ffprobe CLI.