cmd = cmd + " %pls"
        # "pls" as default requires no conversion for most channels, and seems broadly supported by players

    # Playlist type placeholders (%pls, %m3u, %xspf, etc.)
    for dest, rx in placeholder_map.items():
        if re.search(rx, cmd, re.X):
            # from .pls to .m3u
            if not conf.playlist_asis:
                url = convert_playlist(url, listfmt(source), listfmt(dest), local_file=True, row=row)
            # insert quoted URL/filepath
            return re.sub(rx, quote(url), cmd, 2, re.X)

    return "/bin/false"


# Substitute .pls URL with local .m3u, or direct srv addresses, or leaves URL asis.
#  · Takes a single input `url` (and original row{} as template).
#  · But returns a list of [urls] after playlist extraction.