* no_resume The server does not support resuming the
(HTTP or RTMP) download. Boolean.
* has_drm The format has DRM and cannot be downloaded. Boolean
- * downloader_options A dictionary of downloader options as
- described in FileDownloader (For internal use only)
+ * downloader_options A dictionary of downloader options
+ (For internal use only)
+ * http_chunk_size Chunk size for HTTP downloads
+ * ffmpeg_args Extra arguments for ffmpeg downloader
RTMP formats can also have the additional fields: page_url,
app, play_path, tc_url, flash_version, rtmp_live, rtmp_conn,
rtmp_protocol, rtmp_real_time