USB port - MKV no sound

Moderators: RokuDouglas, RokuShawnS, RokuRyan, RokuJamesL, RokuKen

USB port - MKV no sound

Postby graffo » Sat Dec 31, 2011 7:57 am

Guys. I'm having problem playing mkv files through USB port on my Roku 2 XS. There's no sound. MP4 plays just fine. The mkv file is in DD5.1 format, HDMI connection to TV, tried to switch between stereo and 5.1 in Roku sttings. No luck. I have no idea where to start to solve the problem. Any suggestions?
graffo
 
Posts: 3
Joined: Sat Dec 31, 2011 7:47 am

Re: USB port - MKV no sound

Postby stratcat96 » Sat Dec 31, 2011 10:06 am

because Roku does not decode or downmix a Dolby Digital track, only pass it through...

For audio in MKV , we simply play the first stream in the video. So, if you want 5.1, make sure you encode the 5.1 stream first in the file. Additionally, we don't downmix from Dolby Digital or DTS to analog stereo, so if you are not connected to a TV or Receiver with optical or HDMI, you'll want to pick a 2-channel stereo audio stream.
stratcat96
** Valued Community Member **
 
Posts: 3427
Joined: Sat Nov 06, 2010 7:22 pm
Location: Ice Planet Hoth

Re: USB port - MKV no sound

Postby knuckle » Sat Dec 31, 2011 10:11 am

IF your tv can decode the AC3 audio you shouldn't have a problem-- the roku only passes is through and doesn't decode it
ROKU 1 XD J0A113014862
ROKU 2 LT 16A182002191
ROKU 2 LT #2 16A19K025194
ROKU HD 18D2CP067635
all running wireless on a Netgear WNR 1000

favorite channel-- Justin TV
User avatar
knuckle
** Valued Community Member **
 
Posts: 2543
Joined: Fri Jul 08, 2011 6:16 pm
Location: Florida,USA

Re: USB port - MKV no sound

Postby knuckle » Sat Dec 31, 2011 10:12 am

stratcat was faster on the draw and beat me to it.... :)
ROKU 1 XD J0A113014862
ROKU 2 LT 16A182002191
ROKU 2 LT #2 16A19K025194
ROKU HD 18D2CP067635
all running wireless on a Netgear WNR 1000

favorite channel-- Justin TV
User avatar
knuckle
** Valued Community Member **
 
Posts: 2543
Joined: Fri Jul 08, 2011 6:16 pm
Location: Florida,USA

Re: USB port - MKV no sound

Postby graffo » Sat Dec 31, 2011 11:14 am

OK, guys. Thanks for your replies.
graffo
 
Posts: 3
Joined: Sat Dec 31, 2011 7:47 am

Re: USB port - MKV no sound

Postby graffo » Sat Dec 31, 2011 12:51 pm

I've just converted DTS audio to AC3 in my MKV files. Got sound. Thanks :D
graffo
 
Posts: 3
Joined: Sat Dec 31, 2011 7:47 am

Re: USB port - MKV no sound

Postby zaventh » Mon Jan 02, 2012 7:34 pm

Anyone tell me the easiest/fastest way to downmix? Pretty much every MKV I get is DTS and it's pretty time consuming to convert them.
zaventh
 
Posts: 1
Joined: Mon Jan 02, 2012 7:31 pm

Re: USB port - MKV no sound

Postby Familyguy » Mon Jan 02, 2012 10:11 pm

zaventh wrote:Anyone tell me the easiest/fastest way to downmix? Pretty much every MKV I get is DTS and it's pretty time consuming to convert them.


I use the Popcorn MKV AudioConverter. You can find it here:

http://www.videohelp.com/tools/PopCorn- ... oConverter

It's free and there's various guides on the net that will walk you through using it.

Best,
Roku2 XS retired...switched to HTPC
Denon AVR-1912 Receiver
Polk TSI500 mains/CS20 center/TSI300 surrounds
Outlaw Audio LFM-1 subwoofer
Dynex 42" 1080p display
Familyguy
 
Posts: 24
Joined: Mon Jan 02, 2012 7:18 am

Re: USB port - MKV no sound

Postby blegs38552 » Mon Feb 20, 2012 10:16 am

I downloaded an MKV file and tried to play it in Roku 2. Great video, not sound. According to mediainfo, these are the audio specs:
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2h 55mn
Source duration : 2h 55mn
Bit rate mode : Constant
Nominal bit rate : 80.0 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Source stream size : 99.8 MiB
Language : English

I tried using two programs, KV Audio Converter and MKV2AC3 to convert the audio (which appears to be A_AC3 codec) but with no success. KV says "Skipping conversion - none of the audio tracks can be converted or the conversion has been disabled: Audio Track #1 of codec A_AC3 is not of a codec type that can be converted by AudioConverter", and MKV claims that the conversion was successful. I have tried playing back with both 5.1 and stereo settings in Roku - makes no difference. Great video, no sound.

In both cases, I told the programs to remove the original sound so that there would be no confusion.

My TV as an old Sony HD CRT - the Roky is connected via HDMI.
blegs38552
 
Posts: 3
Joined: Mon Feb 20, 2012 9:56 am

Re: USB port - MKV no sound

Postby jamesking420 » Thu Mar 22, 2012 6:38 am

Is there any chance downmixing will be supported in future?
I've selected the Stereo option in the Roku settings, but am not getting sound from some MKV files.

I understand the reason, but I'd still rather get sound than not! I don't think I'll use it particularly frequently, but it would be helpful to have sound through USB :)
James
jamesking420
 
Posts: 9
Joined: Mon Mar 19, 2012 12:10 pm

Re: USB port - MKV no sound

Postby SpoonAZ » Tue Nov 27, 2012 3:26 pm

Anyone have a solid answer to fixing the audio from MKV files with DTS audio? I tried the suggestion of Popcorn MKV converter and it didn't make a difference. The TV made a funny noise but then continued with no audio once the video started.

Are there specific settings that need to be changed within the popcorn converter that aren't set at default?
SpoonAZ
 
Posts: 4
Joined: Tue Nov 27, 2012 3:07 pm

Re: USB port - MKV no sound

Postby SpoonAZ » Tue Nov 27, 2012 3:27 pm

Also, MP4 files play just fine but most of my collection is in MKV.
SpoonAZ
 
Posts: 4
Joined: Tue Nov 27, 2012 3:07 pm

Re: USB port - MKV no sound

Postby stratcat96 » Tue Nov 27, 2012 3:32 pm

from RokuMarkn

Some specifics about getting the most out of your videos:

For audio in MKV , we simply play the first stream in the video. So, if you want 5.1, make sure you encode the 5.1 stream first in the file. Additionally, we don't downmix from Dolby Digital or DTS to analog stereo, so if you are not connected to a TV or Receiver with optical or HDMI, you'll want to pick a 2-channel stereo audio stream.


You can use Freemake Video converter and it will downmix your DTS stream to a stereo track. You can find it here http://www.freemake.com/free_video_converter/. If the video plays fine, don't change any of its settings, just the audio
stratcat96
** Valued Community Member **
 
Posts: 3427
Joined: Sat Nov 06, 2010 7:22 pm
Location: Ice Planet Hoth

Re: USB port - MKV no sound

Postby SpoonAZ » Tue Nov 27, 2012 3:36 pm

stratcat96 wrote:from RokuMarkn

Some specifics about getting the most out of your videos:

For audio in MKV , we simply play the first stream in the video. So, if you want 5.1, make sure you encode the 5.1 stream first in the file. Additionally, we don't downmix from Dolby Digital or DTS to analog stereo, so if you are not connected to a TV or Receiver with optical or HDMI, you'll want to pick a 2-channel stereo audio stream.


You can use Freemake Video converter and it will downmix your DTS stream to a stereo track. You can find it here http://www.freemake.com/free_video_converter/. If the video plays fine, don't change any of its settings, just the audio


Thanks. Okay, I'll try Freemake and let you know. I tried the clicking the down mixing option on Popcorn earlier with no success.
SpoonAZ
 
Posts: 4
Joined: Tue Nov 27, 2012 3:07 pm

Re: USB port - MKV no sound

Postby SpoonAZ » Tue Nov 27, 2012 7:33 pm

So Freemake did the trick. Only thing that has worked.

Is there a way to shorten the process? It took almost twice as long as the length of the video. You mention not changing the video so I used the MKV setting. Is there a setting I'm missing that just strictly does the audio and won't take as long?
SpoonAZ
 
Posts: 4
Joined: Tue Nov 27, 2012 3:07 pm

Next

Return to Roku Streaming Player General Discussion

Who is online

Users browsing this forum: No registered users and 22 guests