static const URLProtocol * const url_protocols[] = {
    &ff_async_protocol,
    &ff_cache_protocol,
    &ff_concat_protocol,
    &ff_crypto_protocol,
    &ff_data_protocol,
    &ff_file_protocol,
    &ff_hls_protocol,
    &ff_md5_protocol,
    &ff_pipe_protocol,
    &ff_prompeg_protocol,
    &ff_subfile_protocol,
    &ff_tee_protocol,
    NULL };
