detecting SD or HD for proper playback

Archived
1

I have implemented HD to my channel and I am having trouble getting the channel to detect if the user is in SD. When a user in SD tries to watch a HD video it kicks back and won’t play. What I need it to do is to detect if the user is in SD and play the SD version of a file. I have my channel set up similar to TWIT with categories for SD video and HD video. When I am in SD and go to TWIT and try and watch a HD video it plays the SD version. This is what I would like to implement. My channel is based off of the videoplayer example in the SDK.

I added 2 codes to try and allow this to happen but now the categories wont load. Can anybody help me solve this problem? What is the best way to detect SD or HD when playing a video?

Here is what I attempted to do
I placed this code in my deviceInfo.brs :

Function hd() as Boolean
di=createobject(roDeviceInfo)
if di.getdisplaytype()=“HDTV” then
return true
else
return false
end if
end function

I tried placing the code:

If not hd() then
if item.StreamFormat=“mp4” then
item.ishd=false
Else if item.streamFormat=“hls” then
item.streamQuality=[“SD”]
End if
End if

several places in my showFeed.brs with the same results none of my buttons will load.

Below are my changes.

My xml code looks like this for a video:

The Dead Truth Helena Texas Act 1 Episode 1 tdt000 Haunted

SD
HD
hls
full-adaptation

SD
0
http://Link to SD video

HD
0
http://Link to HD video

The Klinge Brothers and Everyday Paranormal bring you The Dead Truth Helena Texas Act 1 Episode 1
Clip
1627

here is my deviceInfo.brs

'**********************************************************
'** Video Player Example Application - DeviceInfo
'** November 2009
'** Copyright (c) 2009 Roku Inc. All Rights Reserved.
'**********************************************************

'******************************************************
'Get our device version
'******************************************************

Function GetDeviceVersion()
return CreateObject(“roDeviceInfo”).GetVersion()
End Function

'******************************************************
'Get our serial number
'******************************************************

Function GetDeviceESN()
return CreateObject(“roDeviceInfo”).GetDeviceUniqueId()
End Function

Function hd() as Boolean
di=createobject(roDeviceInfo)
if di.getdisplaytype()=“HDTV” then
return true
else
return false
end if
end function

Here is my showFeed.brs:

if e <> invalid then
item.StreamBitrates.Push(strtoi(validstr(e.streamBitrate.GetText())))
item.StreamQualities.Push(validstr(e.streamQuality.GetText()))
item.StreamUrls.Push(validstr(e.streamUrl.GetText()))
endif
next idx

showCount = showCount + 1
feed.Push(item)

skipitem:

next

End Function

2

In your xml set the StreamQuality and ContentQuality to SD and that will solve for both.

3

This portion of your XML is probably part of the problem. You can’t specify multiple Qualities, Bitrates, and URLs in the same media element.

4

“bandal” wrote:
In your xml set the StreamQuality and ContentQuality to SD and that will solve for both.

Wouldn’t that make it to where it would play in SD only?

5

“TheEndless” wrote:

This portion of your XML is probably part of the problem. You can’t specify multiple Qualities, Bitrates, and URLs in the same media element.

How would I be able to get the HLS adaptive to determine which stream is HD and which stream is SD?

6 
<media>
    <streamQuality>SD</streamQuality>
    <streamBitrate>0</streamBitrate>
    <streamUrl>http://Link to SD video</streamUrl>
</media>
<media>
    <streamQuality>HD</streamQuality>
    <streamBitrate>0</streamBitrate>
    <streamUrl>http://Link to HD video</streamUrl>
</media>

by parsing an array of streams with multiple media tags.

7

“axiomy” wrote:

“TheEndless” wrote:

This portion of your XML is probably part of the problem. You can’t specify multiple Qualities, Bitrates, and URLs in the same media element.
How would I be able to get the HLS adaptive to determine which stream is HD and which stream is SD?
HLS doesn’t require multiple streams to be defined in the XML. The multiple streams are intrinsic to HLS, as they’re included in the M3U8 playlist. You need to make sure you don’t set the streamQuality value, and you should be good to go. If you specify a streamQuality of “HD” then it will only play at HD resolutions, so try removing that element altogether.

8

ah, HLS… thanks :slightly_smiling_face: