If you are having issues playing MKV files with AC3/DTS audio on Roku 3/4, you may wish to read this post. It presents a workaround to make MKV files playable on Roku 3/4 without sound issue.
MKV audio doesn’t play on my Roku 4, how to fix?
“Hi there, can anyone help please? I have some movie files in .mkv format. The audio disappears when I’m streaming to my Roku 4 and I can’t figure out why. It plays fine on my computer. Have you ever experienced the same issue? Any help would be appreciated. Thanks!”
Roku can play MKV files directly. It just does not decode audio that is AC3 or DTS, it passes through this audio untouched to your AVR. Most HDTVs cannot decode AC3 or DTS over HDMI. If your MKV files contain AC3 or DTS audio, Roku may fail to play the audio. In that case, we would recommend converting AC3/DTS MKV files to H.264 AAC MP4 for well playback. Read on to learn a quick guide on how to convert MKV files for playing on Roku 3/4 without audio issues.
Software requirement
HD Video Converter
You can download a demo version (for both, PC and Mac) to have a try. They are not free but it totally worth it.
How to encode AC3 MKV files for viewing on Roku 3/4 without no sound issues?
The steps:
Step 1: Start up HD Video Converter as the best MKV Converter for Roku 3/4. When its main interface appears, click ‘Add File’ button to load your source media.
Step 2: Select output format for Roku 3/4
Navigate to ‘Profile’ menu, choose ‘HD Video’ > ‘HD H.264/MPEG-4 AVC Video (*.mp4) as target format. You can also choose other profile as output depending on Roku 3/4 supported video formats.
Important: If you’ve loaded a number of video clips to do batch conversion, please do remember ticking off ‘Apply to All’ option before you start.
Generally speaking, the default settings will ensure a good compromise between image quality and file size, if not, you can click ‘Settings’ button to modify video and audio settings like video encoder, resolution, video bit rate, frame rate, aspect ratio, audio encoder, sample rate, audio bit rate, and audio channels.
Step 3: Start MKV AC3 Conversion for Roku 3/4
When ready click ‘Convert’ button to start. This converter program supports bulk processing, so you are allowed to import loads of MKV clips to do conversion at a time. If you don’t want to wait for the entire conversion process, you can tick off ‘shut down computer when conversion completed’ and go away to do other things.
Step 4: Locate exported files for transferring to Roku 3/4
As soon as the conversion is complete, you can click ‘Open Folder’ button to get the generated files which are optimized for transferring to Roku 3/4 for playback.
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