Problem Displaying MediaFile msgerror on VAST 3.0 tag

Hi there,

We are an ad platform with a publisher trying to run a VAST 3.0 ad on their Roku channel. The issue is that we are not seeing the ad render on the channel. However, the ad renders fine on a web browser environment. The publisher reported this error:

Roku_Ads_showVideoAd: isRequestFailed(): index = -5; message = malformed data
RAF 2.0314; render failure: malformed data
[RafTask] > AdTrackingCallback
EventType: Error
Obj:
The publisher speculates that our VAST 3.0 response could be causing this issue. Please see the VAST call below:

http://www5.smartadserver.com/ac?siteid … n=s&tmstp=[timestamp]&vpw=640&vph=480

Is there anything we need to adjust in our response to properly deliver ads to Roku?

It’s not a RAF issue per se. Fetching the URL brings this

<VAST version="3.0">
  <Ad id="7334921" sequence="1">
    <InLine>
      <AdSystem version="v1">SMART AdServer</AdSystem>
      <AdTitle>VAST 3.0 LINEAR insertion 7334921</AdTitle>
      <Description>
Official SMART AdServer VAST 3.0 template for displaying a linear ad
</Description>
      <Advertiser>329181</Advertiser>
      <Impression id="impression_smart"><![CDATA[
http://www5.smartadserver.com/h/aip?visit=S&pubid=23&statid=3&ckid=7135085618675361047&tmstp=%5btimestamp%5d&usrtgt=&tgt=%24dt%3d1t%3b%24ab%3d1%3b%24dma%3d807%3b%3b%24hc&systgt=%24qc%3d1313813796%3b%24ql%3dmedium%3b%24qpc%3d95050%3b%24qpp%3d408%3b%24qt%3d152_2199_35499t%3b%24dma%3d807%3b%24b%3d16620%3b%24o%3d12100%3b%24sw%3d1920%3b%24sh%3d1200&capp=0&mcrdbt=0&insid=7334921&imgid=20452586&pgid=876231&fmtid=45907&loguid=381779153369621962&logdate=1511916350186&ctdci=2&sig=5Ngky9hwGE%2b8nmrmLGcI9BX%2fz6Xxql2iHKCa2MrT6sY%3d
]]></Impression>
      <Impression id="impression_smart"><![CDATA[
https://flx647.lporirxe.com/flp/impimg.php?qid=034393f5534393f5734363&cid=647&p=2199&s=&x=SmartAdServerVideoPixel&nci=[sas_insertionId]&nai=45907&adtg=876231&si=195041&pn=&h=&w=&bp=&pp=&ci=&ip=50.224.7.239&ai=&di=&lat=&lon=&mm=&os=&ua=Mozilla%2f5.0+(Macintosh%3b+Intel+Mac+OS+X+10_12_4)+AppleWebKit%2f537.36+(KHTML%2c+like+Gecko)+Chrome%2f62.0.3202.94+Safari%2f537.36&flcb=938852357
]]></Impression>
      <Creatives>
        <Creative id="7334921">
          <Linear>
            <Duration>00:00:15.000</Duration>
            <TrackingEvents>
              <Tracking event="start"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=start&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="firstQuartile"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=firstQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="midpoint"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=midpoint&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="thirdQuartile"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=thirdQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="complete"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=complete&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="mute"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=mute&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="unmute"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=unmute&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="pause"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=pause&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="rewind"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=rewind&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="resume"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=resume&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="fullscreen"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=fullscreen&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="exitFullscreen"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=exitFullscreen&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="expand"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=expand&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="collapse"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=collapse&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="acceptInvitationLinear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=acceptInvitation&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="closeLinear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=close&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
              <Tracking event="skip"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=skip&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></Tracking>
            </TrackingEvents>
            <VideoClicks>
              <ClickTracking id="click_tracking_smart"><![CDATA[
http://www5.smartadserver.com/h/cp?imgid=20452586&insid=7334921&pgid=876231&pubid=23&ckid=7135085618675361047&tmstp=[timestamp]&tgt=%24dt%3d1t%3b%24ab%3d1%3b%24dma%3d807%3b%3b%24hc&systgt=%24qc%3d1313813796%3b%24ql%3dmedium%3b%24qpc%3d95050%3b%24qpp%3d408%3b%24qt%3d152_2199_35499t%3b%24dma%3d807%3b%24b%3d16620%3b%24o%3d12100%3b%24sw%3d1920%3b%24sh%3d1200&ctdci=2
]]></ClickTracking>
            </VideoClicks>
            <MediaFiles>
              <MediaFile id="sas_cid_20452586" delivery="progressive" type="video/mp4" bitrate="1529" width="1280" height="720" scalable="true" maintainAspectRatio="true"><![CDATA[
http://creatives.sascdn.com/diff/2199/7334921/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15.mp4
]]></MediaFile>
              <MediaFile id="sas_cid_20544979" delivery="progressive" type="video/mp4" bitrate="1017" width="854" height="480" scalable="true" maintainAspectRatio="true"><![CDATA[
http://creatives.sascdn.com/diff/2199/a329181/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15_SD_(HighQuality)_480p_MP4.mp4
]]></MediaFile>
              <MediaFile id="sas_cid_20545617" delivery="progressive" type="application/x-mpegurl" bitrate="1970" width="1280" height="720" scalable="true" maintainAspectRatio="true"><![CDATA[
https://creatives.sascdn.com/diff/2199/a329181/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15_HLS_7334921/playlist.m3u8
]]></MediaFile>
            </MediaFiles>
          </Linear>
        </Creative>
      </Creatives>
      <Extensions>
        <Extension>
          <offset isForced="0"/>
        </Extension>
        <Extension>
          <customisedScript><![CDATA[ ]]></customisedScript>
        </Extension>
        <Extension>
          <instanceCount><![CDATA[ 1 ]]></instanceCount>
        </Extension>
        <Extension>
          <IntegralAdScience>
            <advEntityId><![CDATA[ ]]></advEntityId>
            <pubEntityId><![CDATA[ ]]></pubEntityId>
          </IntegralAdScience>
        </Extension>
        <Extension>
          <SmartMetrics>
            <SmartMetric name="timeToClick" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=timeToClick&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="v_firstSecond" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=v_firstSecond&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="v_firstQuartile" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=v_firstQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="v_midpoint" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=v_midpoint&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="v_thirdQuartile" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=v_thirdQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="v_complete" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=v_complete&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
            <SmartMetric name="viewcount" type="linear"><![CDATA[
http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=viewcount&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640
]]></SmartMetric>
          </SmartMetrics>
        </Extension>
        <Extension>
          <SmartMacros>
            <statDomainID><![CDATA[ ]]></statDomainID>
            <networkID><![CDATA[ 2199 ]]></networkID>
            <templateID><![CDATA[ 71299 ]]></templateID>
            <advertiserID><![CDATA[ 329181 ]]></advertiserID>
            <campaignID><![CDATA[ 1115802 ]]></campaignID>
            <insertionID><![CDATA[ 7334921 ]]></insertionID>
            <siteID><![CDATA[ 195041 ]]></siteID>
            <pageID><![CDATA[ 876231 ]]></pageID>
            <formatID><![CDATA[ 45907 ]]></formatID>
            <adBreakType><![CDATA[ 1 ]]></adBreakType>
            <target><![CDATA[ $dt=1t;$ab=1;$dma=807; ]]></target>
            <sessionID><![CDATA[ [timestamp] ]]></sessionID>
            <baseUrl><![CDATA[ http://www5.smartadserver.com ]]></baseUrl>
            <instances><![CDATA[ 1 ]]></instances>
            <videoPlayerWidth><![CDATA[ 640 ]]></videoPlayerWidth>
            <videoPlayerHeight><![CDATA[ 480 ]]></videoPlayerHeight>
            <referrer><![CDATA[ ]]></referrer>
            <ip><![CDATA[ 50.224.7.239 ]]></ip>
            <contentID><![CDATA[ ]]></contentID>
            <contentTitle><![CDATA[ ]]></contentTitle>
            <videoContentType><![CDATA[ ]]></videoContentType>
            <videoContentCategory><![CDATA[ ]]></videoContentCategory>
            <videoContentDuration><![CDATA[ 0 ]]></videoContentDuration>
            <videoSeasonNumber><![CDATA[ 0 ]]></videoSeasonNumber>
            <videoEpisodeNumber><![CDATA[ 0 ]]></videoEpisodeNumber>
            <videoContentRating><![CDATA[ ]]></videoContentRating>
            <contentProviderId><![CDATA[ ]]></contentProviderId>
            <contentProviderName><![CDATA[ ]]></contentProviderName>
            <videoContentDistributorId><![CDATA[ ]]></videoContentDistributorId>
            <videoContentDistributorName><![CDATA[ ]]></videoContentDistributorName>
            <externalContentId><![CDATA[ ]]></externalContentId>
            <videoCmsId><![CDATA[ ]]></videoCmsId>
            <videoContentTags><![CDATA[ ]]></videoContentTags>
          </SmartMacros>
        </Extension>
      </Extensions>
    </InLine>
  </Ad>
</VAST>

which parses as:

[
  {
    "ads": [
      {
        "adid": "7334921", 
        "adserver": "http://www5.smartadserver.com/ac?siteid=195041&pgid=876231&fmtid=45907&ab=1&tgt=&oc=1&out=vast3&ps=1&pb=0&visit=S&vcn=s&tmstp=[timestamp]&vpw=640&vph=480", 
        "adtitle": "VAST 3.0 LINEAR insertion 7334921", 
        "advertiser": "329181", 
        "companionads": [
          {
            "height": 0, 
            "mimetype": "unknown", 
            "tracking": [
              {
                "event": "Impression", 
                "time": 0, 
                "triggered": false, 
                "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=expand&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
              }, 
              {
                "event": "Close", 
                "triggered": false, 
                "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=collapse&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
              }
            ], 
            "url": "", 
            "width": 0
          }
        ], 
        "creativeadid": "", 
        "creativeid": "7334921", 
        "duration": 15, 
        "streamformat": "mp4", 
        "streams": [
          {
            "bitrate": 1529, 
            "height": 720, 
            "mimetype": "video/mp4", 
            "provider": "", 
            "url": "http://creatives.sascdn.com/diff/2199/7334921/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15.mp4", 
            "width": 1280
          }, 
          {
            "bitrate": 1017, 
            "height": 480, 
            "mimetype": "video/mp4", 
            "provider": "", 
            "url": "http://creatives.sascdn.com/diff/2199/a329181/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15_SD_(HighQuality)_480p_MP4.mp4", 
            "width": 854
          }
        ], 
        "tracking": [
          {
            "event": "Impression", 
            "time": 0, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=start&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "FirstQuartile", 
            "time": 3.75, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=firstQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Midpoint", 
            "time": 7.5, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=midpoint&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "ThirdQuartile", 
            "time": 11.25, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=thirdQuartile&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Complete", 
            "time": 15, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=complete&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Mute", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=mute&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Unmute", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=unmute&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Pause", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=pause&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Resume", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=resume&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "AcceptInvitation", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=acceptInvitation&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Close", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=close&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Skip", 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/track/action?pid=876231&iid=7334921&cid=20452586&sid=[timestamp]&key=skip&num1=0&num3=1&ab=1&fmtid=45907&ctid=&ctn=&ctt=&ctc=&ctd=0&cts=0&cte=0&ctr=&ctpid=&ctp=&ctdid=&ctdn=&ctxid=&ctmsid=&ctk=&vph=480&vpw=640"
          }, 
          {
            "event": "Impression", 
            "time": 0, 
            "triggered": false, 
            "url": "http://www5.smartadserver.com/h/aip?visit=S&pubid=26&statid=3&ckid=0&tmstp=%5btimestamp%5d&usrtgt=&tgt=%24dt%3d32t%3b%24ab%3d1%3b%24dma%3d807%3b&systgt=%24qc%3d1313813796%3b%24ql%3dmedium%3b%24qpc%3d95050%3b%24qpp%3d408%3b%24qt%3d152_2199_35499t%3b%24dma%3d807%3b%24b%3d9999%3b%24o%3d99999&pgDomain=http%3a%2f%2fwww5.smartadserver.com%2fac%3fsiteid%3d195041%26pgid%3d876231%26fmtid%3d45907%26ab%3d1%26tgt%3d%26oc%3d1%26out%3dvast3%26ps%3d1%26pb%3d0%26visit%3dS%26vcn%3ds%26tmstp%3d%255Btimestamp%255D%26vpw%3d640%26vph%3d480&capp=0&mcrdbt=0&insid=7334921&imgid=20452586&pgid=876231&fmtid=45907&loguid=376431128818745493&logdate=1511916452296&ctdci=2&sig=MSS1D6wQ%2fut3O1M7GJPQ%2fVQMk9opirZ7mDd93d6SRx0%3d"
          }, 
          {
            "event": "Impression", 
            "time": 0, 
            "triggered": false, 
            "url": "https://flx647.lporirxe.com/flp/impimg.php?qid=034393f5534393f5734363&cid=647&p=2199&s=http%3a%2f%2fwww5.smartadserver.com&x=SmartAdServerVideoPixel&nci=[sas_insertionId]&nai=45907&adtg=876231&si=195041&pn=&h=&w=&bp=&pp=&ci=&ip=50.224.7.233&ai=&di=&lat=&lon=&mm=&os=&ua=Roku%2fDVP-8.0+(298.00E04125A)&flcb=1829351801"
          }, 
          {
            "event": "Impression", 
            "time": 0, 
            "triggered": false, 
            "url": "https://pixel.adsafeprotected.com/?anId=924444&campId=45907&pubId=2199&chanId=Video"
          }
        ]
      }
    ], 
    "duration": 15, 
    "rendersequence": "preroll", 
    "rendertime": 0, 
    "slots": 0, 
    "tracking": [], 
    "viewed": false
  }
]

The ad specifies 2 alternate streams

       "streams": [
          {
            "bitrate": 1529, 
            "height": 720, 
            "mimetype": "video/mp4", 
            "provider": "", 
            "url": "http://creatives.sascdn.com/diff/2199/7334921/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15.mp4", 
            "width": 1280
          }, 
          {
            "bitrate": 1017, 
            "height": 480, 
            "mimetype": "video/mp4", 
            "provider": "", 
            "url": "http://creatives.sascdn.com/diff/2199/a329181/Introducing_T-Mobile_Unlimited_with_Netflix_On_Us_15_SD_(HighQuality)_480p_MP4.mp4", 
            "width": 854
          }
        ], 

If you try these in “Stream Tester Tool” at http://devtools.web.roku.com/stream_tes … index.html, the 1st does not play on my Roku and the 2nd does. I don’t know what the exact reason is (not formats expert). But consider using the above tool for troubleshooting videos