HLS playback issue

Archived
1

We are trying to playback AES-128 encrypted HLS playlist, attaching the Playlist below
CODE: SELECT ALL
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=164000,CODECS=“mp4a.40.2,avc1.66.30”,RESOLUTION=320x136
0001/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=496000,CODECS=“mp4a.40.2,avc1.66.30”,RESOLUTION=400x170
0003/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=696000,CODECS=“mp4a.40.2,avc1.66.30”,RESOLUTION=480x204
0004/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1328000,CODECS=“mp4a.40.2,avc1.4d001f”,RESOLUTION=640x272
0006/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1928000,CODECS=“mp4a.40.2,avc1.4d001f”,RESOLUTION=800x340
0007/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3128000,CODECS=“mp4a.40.2,avc1.4d001f”,RESOLUTION=1024x434
0009/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=4128000,CODECS=“mp4a.40.2,avc1.64001f”,RESOLUTION=1280x544
0010/renditions.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=5128000,CODECS=“mp4a.40.2,avc1.640028”,RESOLUTION=1920x816
0011/renditions.m3u8

We are not able to playback the above playlist, but if we are playing the master file for each resolutions directly giving the path for that file, that playback works but passing the above playlist is not working can you please help or point why this is happening..?

Appreciate any help/input as this is critical for us to get it working as adaptive streams.

Error which Roku throws up is : Media Format not detected, before throwing this message it tries to download segments but fails and eventually throws the Error message.

Thanks,
Abhi

2

Can you send the URL of the top level manifest?

3

Hi,

I am colleague of Abhi. Here is the top level url which you requested.

http://hls.spuul.com/debug/unprotected/ … aster.m3u8

Satish

4

I put your URL into the SimpleVideoPlayer example in the sdk, and it played. Make sure you are setting the StreamFormat to “hls”.


' ********************************************************************
' **  Sample PlayVideo App
' **  Copyright (c) 2009 Roku Inc. All Rights Reserved.
' ********************************************************************

Function main(args As Dynamic)
    print "Displaying video: "
    p = CreateObject("roMessagePort")
    video = CreateObject("roVideoScreen")
    video.setMessagePort(p)

    'bitrates  = [0]          ' 0 = no dots, adaptive bitrate
    'bitrates  = [348]    ' <500 Kbps = 1 dot
    'bitrates  = [664]    ' <800 Kbps = 2 dots
    'bitrates  = [996]    ' <1.1Mbps  = 3 dots
    'bitrates  = [2048]    ' >=1.1Mbps = 4 dots
    bitrates  = [0]    

    
    'HLS test stream
   urls=["http://hls.spuul.com/debug/unprotected/mickeyvirus-opt-vbr/master.m3u8"]
    'urls = ["http://185.73.239.20:8000/live/egnlwiaLky/4fYLAeGFGY/322.m3u8"]
    qualities = ["HD"]
    streamformat = "hls"
    title = "Test Stream"
    srt=""
  
   
    
    
    videoclip = CreateObject("roAssociativeArray")
    videoclip.StreamBitrates = bitrates
    videoclip.StreamUrls = urls
    print "URL: ";urls
    videoclip.StreamQualities = qualities
    videoclip.StreamFormat = StreamFormat
    videoclip.Title = title
    print "srt = ";srt
    if srt <> invalid and srt <> "" then
        videoclip.SubtitleUrl = srt
    end if
    
    video.SetContent(videoclip)
    video.show()

    lastSavedPos   = 0
    statusInterval = 10 'position must change by more than this number of seconds before saving

    while true
        msg = wait(0, video.GetMessagePort())
        if type(msg) = "roVideoScreenEvent"
            if msg.isScreenClosed() then 'ScreenClosed event
                print "Closing video screen"
                exit while
            else if msg.isPlaybackPosition() then
                nowpos = msg.GetIndex()
                if nowpos > 10000
                    
                end if
                if nowpos > 0
                    if abs(nowpos - lastSavedPos) > statusInterval
                        lastSavedPos = nowpos
                    end if
                end if
            else if msg.isRequestFailed()
                print "play failed: "; msg.GetMessage()
            else
                print "Unknown event: "; msg.GetType(); " msg: "; msg.GetMessage()
            endif
        end if
    end while
End Function
5

“psatish” wrote:
Hi,

Unfortunately we are still unable to playback the video. The app just freezes after showing part of the progress bar. We are using a Roku 3 with software version 6.2
With version 7.0 of the firmware it crashes the box hard, so be happy it just freezes. :grinning_face_with_smiling_eyes:

I can play back each rendition separately, but it appears to crash when it switches streams. I’m no expert on encryption in HLS, but I noticed that each rendition uses the same key, but a different IV. I wonder if that could be causing the problem. :?:

By the way, you might want to add System Logging to your code to see what’s going on:

log = CreateObject("roSystemLog")
log.SetMessagePort(port)
log.EnableType("http.connect")
log.EnableType("http.error")

I haven’t looked at the example code, so you may need to add something to the event loop to print the roSystemLogEvent events.

-JT

6

The output from the Syslog is the following

– SYSLOG -----------------------------------------
Log type: http.error
HTTP error, no more information available

Also getting an event

Unknown event: 11 msg: Unspecified or invalid track path/url.
play failed:

Satish