NAME
Paws::KinesisVideoArchivedMedia::GetDASHStreamingSessionURL - Arguments for method GetDASHStreamingSessionURL on Paws::KinesisVideoArchivedMedia
DESCRIPTION
This class represents the parameters used for calling the method GetDASHStreamingSessionURL on the Amazon Kinesis Video Streams Archived Media service. Use the attributes of this class as arguments to method GetDASHStreamingSessionURL.
You shouldn't make instances of this class. Each attribute should be used as a named argument in the call to GetDASHStreamingSessionURL.
SYNOPSIS
my $kinesisvideo = Paws->service('KinesisVideoArchivedMedia');
my $GetDASHStreamingSessionURLOutput =
$kinesisvideo->GetDASHStreamingSessionURL(
DASHFragmentSelector => {
FragmentSelectorType => 'PRODUCER_TIMESTAMP'
, # values: PRODUCER_TIMESTAMP, SERVER_TIMESTAMP; OPTIONAL
TimestampRange => {
EndTimestamp => '1970-01-01T01:00:00', # OPTIONAL
StartTimestamp => '1970-01-01T01:00:00', # OPTIONAL
}, # OPTIONAL
}, # OPTIONAL
DisplayFragmentNumber => 'ALWAYS', # OPTIONAL
DisplayFragmentTimestamp => 'ALWAYS', # OPTIONAL
Expires => 1, # OPTIONAL
MaxManifestFragmentResults => 1, # OPTIONAL
PlaybackMode => 'LIVE', # OPTIONAL
StreamARN => 'MyResourceARN', # OPTIONAL
StreamName => 'MyStreamName', # OPTIONAL
);
# Results:
my $DASHStreamingSessionURL =
$GetDASHStreamingSessionURLOutput->DASHStreamingSessionURL;
# Returns a Paws::KinesisVideoArchivedMedia::GetDASHStreamingSessionURLOutput object.
Values for attributes that are native types (Int, String, Float, etc) can passed as-is (scalar values). Values for complex Types (objects) can be passed as a HashRef. The keys and values of the hashref will be used to instance the underlying object. For the AWS API documentation, see https://docs.aws.amazon.com/goto/WebAPI/kinesisvideo/GetDASHStreamingSessionURL
ATTRIBUTES
DASHFragmentSelector => Paws::KinesisVideoArchivedMedia::DASHFragmentSelector
The time range of the requested fragment and the source of the timestamps.
This parameter is required if PlaybackMode
is ON_DEMAND
or LIVE_REPLAY
. This parameter is optional if PlaybackMode is
LIVE
. If PlaybackMode
is LIVE
, the FragmentSelectorType
can be set, but the TimestampRange
should not be set. If PlaybackMode
is ON_DEMAND
or LIVE_REPLAY
, both FragmentSelectorType
and TimestampRange
must be set.
DisplayFragmentNumber => Str
Fragments are identified in the manifest file based on their sequence number in the session. If DisplayFragmentNumber is set to ALWAYS
, the Kinesis Video Streams fragment number is added to each S element in the manifest file with the attribute name “kvs:fn”. These fragment numbers can be used for logging or for use with other APIs (e.g. GetMedia
and GetMediaForFragmentList
). A custom MPEG-DASH media player is necessary to leverage these this custom attribute.
The default value is NEVER
.
Valid values are: "ALWAYS"
, "NEVER"
DisplayFragmentTimestamp => Str
Per the MPEG-DASH specification, the wall-clock time of fragments in the manifest file can be derived using attributes in the manifest itself. However, typically, MPEG-DASH compatible media players do not properly handle gaps in the media timeline. Kinesis Video Streams adjusts the media timeline in the manifest file to enable playback of media with discontinuities. Therefore, the wall-clock time derived from the manifest file may be inaccurate. If DisplayFragmentTimestamp is set to ALWAYS
, the accurate fragment timestamp is added to each S element in the manifest file with the attribute name “kvs:ts”. A custom MPEG-DASH media player is necessary to leverage this custom attribute.
The default value is NEVER
. When DASHFragmentSelector is SERVER_TIMESTAMP
, the timestamps will be the server start timestamps. Similarly, when DASHFragmentSelector is PRODUCER_TIMESTAMP
, the timestamps will be the producer start timestamps.
Valid values are: "ALWAYS"
, "NEVER"
Expires => Int
The time in seconds until the requested session expires. This value can be between 300 (5 minutes) and 43200 (12 hours).
When a session expires, no new calls to GetDashManifest
, GetMP4InitFragment
, or GetMP4MediaFragment
can be made for that session.
The default is 300 (5 minutes).
MaxManifestFragmentResults => Int
The maximum number of fragments that are returned in the MPEG-DASH manifest.
When the PlaybackMode
is LIVE
, the most recent fragments are returned up to this value. When the PlaybackMode
is ON_DEMAND
, the oldest fragments are returned, up to this maximum number.
When there are a higher number of fragments available in a live MPEG-DASH manifest, video players often buffer content before starting playback. Increasing the buffer size increases the playback latency, but it decreases the likelihood that rebuffering will occur during playback. We recommend that a live MPEG-DASH manifest have a minimum of 3 fragments and a maximum of 10 fragments.
The default is 5 fragments if PlaybackMode
is LIVE
or LIVE_REPLAY
, and 1,000 if PlaybackMode
is ON_DEMAND
.
The maximum value of 1,000 fragments corresponds to more than 16 minutes of video on streams with 1-second fragments, and more than 2 1/2 hours of video on streams with 10-second fragments.
PlaybackMode => Str
Whether to retrieve live, live replay, or archived, on-demand data.
Features of the three types of sessions include the following:
LIVE
: For sessions of this type, the MPEG-DASH manifest is continually updated with the latest fragments as they become available. We recommend that the media player retrieve a new manifest on a one-second interval. When this type of session is played in a media player, the user interface typically displays a "live" notification, with no scrubber control for choosing the position in the playback window to display.In
LIVE
mode, the newest available fragments are included in an MPEG-DASH manifest, even if there is a gap between fragments (that is, if a fragment is missing). A gap like this might cause a media player to halt or cause a jump in playback. In this mode, fragments are not added to the MPEG-DASH manifest if they are older than the newest fragment in the playlist. If the missing fragment becomes available after a subsequent fragment is added to the manifest, the older fragment is not added, and the gap is not filled.LIVE_REPLAY
: For sessions of this type, the MPEG-DASH manifest is updated similarly to how it is updated forLIVE
mode except that it starts by including fragments from a given start time. Instead of fragments being added as they are ingested, fragments are added as the duration of the next fragment elapses. For example, if the fragments in the session are two seconds long, then a new fragment is added to the manifest every two seconds. This mode is useful to be able to start playback from when an event is detected and continue live streaming media that has not yet been ingested as of the time of the session creation. This mode is also useful to stream previously archived media without being limited by the 1,000 fragment limit in theON_DEMAND
mode.ON_DEMAND
: For sessions of this type, the MPEG-DASH manifest contains all the fragments for the session, up to the number that is specified inMaxManifestFragmentResults
. The manifest must be retrieved only once for each session. When this type of session is played in a media player, the user interface typically displays a scrubber control for choosing the position in the playback window to display.
In all playback modes, if FragmentSelectorType
is PRODUCER_TIMESTAMP
, and if there are multiple fragments with the same start timestamp, the fragment that has the larger fragment number (that is, the newer fragment) is included in the MPEG-DASH manifest. The other fragments are not included. Fragments that have different timestamps but have overlapping durations are still included in the MPEG-DASH manifest. This can lead to unexpected behavior in the media player.
The default is LIVE
.
Valid values are: "LIVE"
, "LIVE_REPLAY"
, "ON_DEMAND"
StreamARN => Str
The Amazon Resource Name (ARN) of the stream for which to retrieve the MPEG-DASH manifest URL.
You must specify either the StreamName
or the StreamARN
.
StreamName => Str
The name of the stream for which to retrieve the MPEG-DASH manifest URL.
You must specify either the StreamName
or the StreamARN
.
SEE ALSO
This class forms part of Paws, documenting arguments for method GetDASHStreamingSessionURL in Paws::KinesisVideoArchivedMedia
BUGS and CONTRIBUTIONS
The source code is located here: https://github.com/pplu/aws-sdk-perl
Please report bugs to: https://github.com/pplu/aws-sdk-perl/issues