Roku Developer Program

[stanislaw_busza]

Hello, this is my first post here.

Sometimes Video player component unpauses by itself. I do not set control field, when observers are set to observe fields control and state i receive something like that:

  m.Video.observeField("state", "videoStateHandler")
  m.Video.observeField("control", "videoControlHandler")

sub videoControlHandler(event)
  ? "videoControlHandler", event.getData()
end sub

sub videoStateHandler(event)
  ? "videoStateHandler", event.getData()
end sub

and i get (in logs):

videoControlHandler pause

videoControlHandler resume

videoStateHandler buffering

videoStateHandler playing

videoControlHandler pause

videoStateHandler paused

videoStateHandler playing

videoControlHandler pause

videoStateHandler paused

videoStateHandler playing

So we can see here that i cannot effectively pause the video (after setting control field

to "pause" player automatically returns to the playing state).

Details:

Device: Roku premiere - 3920EU

Video format: DASH

Problem touches only Live / Restarted live events. Parts of manifest files below:

<?xml version="1.0" encoding="UTF-8" ?>
<MPD profiles="urn:mpeg:dash:profile:isoff-live:2011" type="dynamic" availabilityStartTime="2021-12-13T13:06:06Z" minimumUpdatePeriod="PT2.0S" minBufferTime="PT2.0S" publishTime="2022-03-10T10:50:04Z" timeShiftBufferDepth="PT6M" suggestedPresentationDelay="PT2.0S" xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mspr="urn:microsoft:playready" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd">
	<Period start="PT0S" id="1">
		<AdaptationSet mimeType="video/mp4" startWithSAP="1" segmentAlignment="true">
			<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="e7266e5a-33fe-32f4-9283-3dca5e32c6cd"></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"><cenc:pssh xmlns:cenc="urn:mpeg:cenc:2013">AAAAS3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAACsIARIQ5yZuWjP+MvSSgz3KXjLGzSIVYmFza2V0YmFsbGxlYWd1ZV9kYXNo</cenc:pssh></ContentProtection>
			<SegmentTemplate timescale="10000000" presentationTimeOffset="0" media="$RepresentationID$_Segment-$Time$.m4v" initialization="$RepresentationID$_init.m4i">
				<SegmentTimeline>
					<S t="75082865928370" d="20000000" r="179" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation width="768" height="432" frameRate="25" codecs="avc1.640029" scanType="progressive" id="1639400758168item-01item" bandwidth="1100000" />
			<Representation width="768" height="432" frameRate="25" codecs="avc1.640029" scanType="progressive" id="1639400758168item-02item" bandwidth="1700000" />
			<Representation width="1280" height="720" frameRate="25" codecs="avc1.640029" scanType="progressive" id="1639400758168item-03item" bandwidth="2100000" />
			<Representation width="1280" height="720" frameRate="25" codecs="avc1.640029" scanType="progressive" id="1639400758168item-04item" bandwidth="2500000" />
		</AdaptationSet>
		<AdaptationSet mimeType="audio/mp4" startWithSAP="1" lang="heb" segmentAlignment="true">
			<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="e7266e5a-33fe-32f4-9283-3dca5e32c6cd"></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"><cenc:pssh xmlns:cenc="urn:mpeg:cenc:2013">AAAAS3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAACsIARIQ5yZuWjP+MvSSgz3KXjLGzSIVYmFza2V0YmFsbGxlYWd1ZV9kYXNo</cenc:pssh></ContentProtection>
			<SegmentTemplate timescale="10000000" presentationTimeOffset="0" media="$RepresentationID$_Segment-$Time$.m4a" initialization="$RepresentationID$_init.m4i">
				<SegmentTimeline>
					<S t="75082866154620" d="20053333" r="1" />
					<S t="75082906261286" d="20053334" />
            
                    # many segments was cut here intentionally

					<S t="75086426261286" d="20053334" />
					<S t="75086446314620" d="19626666" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation audioSamplingRate="48000" codecs="mp4a.40.5" id="1639400758168item-05item" bandwidth="40000" />
		</AdaptationSet>
	</Period>
</MPD>

The same happens in ROKU stream tester!

[renojim]

You can't pause a live stream forever if that's what you're trying to do.

[stanislaw_busza]

Why do you mean forever ? Why not ? Why not still frame ?

It happens not only on LIVE tv but also on TSTV for live event (event end moves into future but its start is fixed).

[renojim]

Forever in this instance means until the Roku's limited buffer fills.  Once it's full it has to do something.  I don't recall if it's an option or not, but clearly the default is to start playing the stream once the buffer fills.

Sorry, I don't know what "TSTV" means.

[stanislaw_busza]

Ok, thank you for answer. Pausing forever is the best description of what i want to do.

"I don't recall if it's an option or not, but clearly the default is to start playing the stream once the buffer fills."

The matter of this task is to find that option or post a bug to ROKU when this option is not present in the video element 🙂

TSTV means time shifted television, so when on live stream we hit a restart button on that particular event. In that case we change manifest and start of the stream is fixed and available to be downloaded. We can seek and do trickplay from beginning to the actual live point.

[renojim · Accepted solution]

I don't have any experience with it, but check out LiveBoundsPauseBehavior under:

https://developer.roku.com/docs/developer-program/getting-started/architecture/content-metadata.md

[stanislaw_busza]

Thank you very much 🙂 that is the exact thing that i wanted. I implemented the solution that you proposed and it simply.... works! 🙂

[renojim]

Great!  I'm glad you got it working the way you wanted.