Usage: bitwhip stream [OPTIONS] <URL> [TOKEN]

Arguments:
  <URL>    The WHIP URL
  [TOKEN]  The WHIP bearer token

Options:
  -c <CAPTURE_METHOD>          Capture method [default: av-foundation] [possible values: av-foundation, dxgi]
  -f, --framerate <FRAMERATE>  Target frames per second for capture device [default: 60]
  -d, --device <DEVICE>        Device(s) to capture, source specific
  -v...                        Increase log verbosity, multiple occurrences (-vvv) further increase
  -h, --help

let encoder = EncoderBuilder::new()
            .for_source(&mut source)
            .customise(move |encoder| {
                encoder.set_frame_rate(Some(frame_rate));
                encoder.set_time_base(frame_rate.invert());
                encoder.set_gop(120);
                encoder.set_max_b_frames(0);
            })
            .open()?;

pub trait Source {
    fn next_frame(&mut self, out: &mut frame::Video) -> Result<(), Error>;
    fn hw_support(&self) -> bool {
        false
    }