import yt_dlp


def cli_to_api(opts: list) -> dict:
    """Convert yt-dlp CLI options to internal API ones."""
    default = yt_dlp.parse_options([]).ydl_opts
    diff = {
        k: v for k, v in yt_dlp.parse_options(opts).ydl_opts.items() if default[k] != v
    }
    if 'postprocessors' in diff:
        diff['postprocessors'] = [
            pp for pp in diff['postprocessors'] if pp not in default['postprocessors']
        ]
    return diff