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02-13-2013
12:34 AM
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
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