No DTS Audio output in Windows 7?
Installing ac3filter "full" from
seemed to work for me, and appears to be just the audio support I needed without adding a bunch of other crufty codecs to my system. -- but I'm unclear if it's the best solution.
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Jeff Atwood
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Updated on September 17, 2022Comments
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Jeff Atwood almost 2 years
Windows 7 supports a ton of video codecs by default, but I've found that some of the videos I have will play video but no audio.
Using the MediaInfo application, It looks like the culprit is the DTS-only audio on these video files:
General Complete name : C:\Users\Jeff\Videos\video1.mkv Format : Matroska File size : 7.95 GiB Duration : 2h 13mn Overall bit rate : 8 517 Kbps Encoded date : UTC 2010-10-09 19:46:55 Writing application : mkvmerge v2.9.8 ('C'est le bon') built on Aug 13 2009 12:49:06 Writing library : libebml v0.7.7 + libmatroska v0.8.1 Audio ID : 2 Format : DTS Format/Info : Digital Theater Systems Codec ID : A_DTS Duration : 2h 13mn Bit rate mode : Constant Bit rate : 1 510 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 24 bits Stream size : 1.41 GiB (18%) Title : English DTS Language : English
(I removed the video section as it isn't relevant)
There is no other audio stream in this file -- only the DTS. Clearly it is the culprit for my "video but no audio" problem. So I have two questions:
- Why can't Windows 7 play back DTS audio out of the box?
- How do you add DTS audio support to Windows 7 without installing a whole bunch of crazy new codecs I don't want or need?
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Ivo Flipse over 13 yearsLike I told you: install a codec pack or use VLC to play things! You put us Super Users to shame ;-)
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Bala Sivakumar almost 11 yearsAnswers to your questions: 1. All compressed formats require codecs to decode the format. Windows can't playback DTS audio because it does not carry the codec inbox (but it does carry Dolby codecs) 2. You seem to have found an acceptable solution for this. There is no single 'best' approach because everyone has their own opinion on 3rd party codecs/packs.
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JeremyW over 13 yearswere you getting no audio at all, or chopped up audio? I've been having problems with my HDMI output and certain mkv files with DTS soundtracks producing chopped up sound