Roku Developer Program

Join our online forum to talk to Roku developers and fellow channel creators. Ask questions, share tips with the community, and find helpful resources.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
serpox
Visitor

Audio doesn't play audio on separate audio-video .ismv files

Roku player fails to play audio on Smooth streaming .ismv files that do not contain audio track. Audio track is found in a separate .isma file. When playing this files the player only display video but no audio.
Looking at the manifest file the video files (.ismv) only contains a video track the audio track is found on a separate (.isma) file. The Manifest file can be played correctly on Silverlight players and in IPOds.

Here is the manifest example:

<?xml version="1.0" encoding="utf-8"?><smil xmlns="http://www.w3.org/2001/SMIL20/Language">
<head>
<meta name="clientManifestRelativePath" content="video.ismc"/>
</head>
<body>
<switch>
<audio src="audio.isma" systemBitrate="160000" systemLanguage="eng">
<param name="trackID" value="1" valueType="data" />
<param name="trackName" value="audio" valueType="data" />
</audio>
<video src="video.ismv" systemBitrate="1000000">
<param name="trackID" value="2" valuetype="data" />
</video>
</switch>
</body>
</smil>

I have done extesive tests! It works fine when video and audio are muxed in the same .ismv file,

Is there a fix available that addresses this playback issue? Or is there a solution where I can tell the ROKU player to look at two separate files for Video and Audio to playback at once?

Thank you for your help.

Regards,

Art
0 Kudos
Need Assistance?
Welcome to the Roku Community! Feel free to search our Community for answers or post your question to get help.

Become a Roku Streaming Expert!

Share your expertise, help fellow streamers, and unlock exclusive rewards as part of the Roku Community. Learn more.