export declare const protobufPackage = "video_streaming";
export declare enum UMPPartId {
    UNKNOWN = 0,
    ONESIE_HEADER = 10,
    ONESIE_DATA = 11,
    ONESIE_ENCRYPTED_MEDIA = 12,
    /** MEDIA_HEADER - Header for a media segment; includes sequence and timing information. */
    MEDIA_HEADER = 20,
    /** MEDIA - Chunk of media segment data. */
    MEDIA = 21,
    /** MEDIA_END - Indicates end of media segment; finalizes segment processing. */
    MEDIA_END = 22,
    CONFIG = 30,
    LIVE_METADATA = 31,
    HOSTNAME_CHANGE_HINT_DEPRECATED = 32,
    LIVE_METADATA_PROMISE = 33,
    LIVE_METADATA_PROMISE_CANCELLATION = 34,
    /** NEXT_REQUEST_POLICY - Server's policy for the next request; includes backoff time and playback cookie. */
    NEXT_REQUEST_POLICY = 35,
    USTREAMER_VIDEO_AND_FORMAT_METADATA = 36,
    FORMAT_SELECTION_CONFIG = 37,
    USTREAMER_SELECTED_MEDIA_STREAM = 38,
    /** FORMAT_INITIALIZATION_METADATA - Metadata for format initialization; contains total number of segments, duration, etc. */
    FORMAT_INITIALIZATION_METADATA = 42,
    /** SABR_REDIRECT - Indicates a redirect to a different streaming URL. */
    SABR_REDIRECT = 43,
    /** SABR_ERROR - Indicates a SABR error; happens when the payload is invalid or the server cannot process the request. */
    SABR_ERROR = 44,
    SABR_SEEK = 45,
    /** RELOAD_PLAYER_RESPONSE - Directive to reload the player with new parameters. */
    RELOAD_PLAYER_RESPONSE = 46,
    PLAYBACK_START_POLICY = 47,
    ALLOWED_CACHED_FORMATS = 48,
    START_BW_SAMPLING_HINT = 49,
    PAUSE_BW_SAMPLING_HINT = 50,
    SELECTABLE_FORMATS = 51,
    REQUEST_IDENTIFIER = 52,
    REQUEST_CANCELLATION_POLICY = 53,
    ONESIE_PREFETCH_REJECTION = 54,
    TIMELINE_CONTEXT = 55,
    REQUEST_PIPELINING = 56,
    /** SABR_CONTEXT_UPDATE - Updates SABR context data; usually used for ads. */
    SABR_CONTEXT_UPDATE = 57,
    /** STREAM_PROTECTION_STATUS - Status of stream protection; indicates whether attestation is required. */
    STREAM_PROTECTION_STATUS = 58,
    /** SABR_CONTEXT_SENDING_POLICY - Policy indicating which SABR contexts to send or discard in future requests. */
    SABR_CONTEXT_SENDING_POLICY = 59,
    LAWNMOWER_POLICY = 60,
    SABR_ACK = 61,
    END_OF_TRACK = 62,
    CACHE_LOAD_POLICY = 63,
    LAWNMOWER_MESSAGING_POLICY = 64,
    PREWARM_CONNECTION = 65,
    PLAYBACK_DEBUG_INFO = 66,
    /** SNACKBAR_MESSAGE - Directive to show the user a notification message. */
    SNACKBAR_MESSAGE = 67,
    UNRECOGNIZED = -1
}