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ma65k		#1 Posted : Tuesday, October 6, 2015 7:58:16 AM(UTC)
Rank: Newbie Groups: Registered Joined: 10/6/2015(UTC) Posts: 3 Location: Russia		Hello! problems with sound. When playing a video, the sound periodically breaks down.through another video player it plays without problems.tell me what could be the problem?
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Ittaidv		#2 Posted : Tuesday, October 6, 2015 4:05:59 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/19/2013(UTC) Posts: 600 Location: Belgium Thanks: 75 times Was thanked: 91 time(s) in 75 post(s)		In what codec was it recorded? If you're more specific, someone might know an answer to your problem.
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macgiver76		#3 Posted : Wednesday, October 7, 2015 1:00:49 AM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/29/2013(UTC) Posts: 98 Location: Italy Thanks: 5 times Was thanked: 4 time(s) in 4 post(s)		I confirm the problem, using the output of DeckLink SDI and sent to the stage during an event sometimes off the sound, for a few milliseconds.
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ma65k		#4 Posted : Wednesday, October 7, 2015 2:47:20 AM(UTC)
Rank: Newbie Groups: Registered Joined: 10/6/2015(UTC) Posts: 3 Location: Russia		Ittaidv wrote: In what codec was it recorded? If you're more specific, someone might know an answer to your problem. the codec doesn't matter, it happens in different formats, for example:Audio: 48 000 Hz; 16 Bit; Stereo; PCM Video: 25 fps; 720x576 lower field Starting with; or DV PAL Audio: 192 Kbps; 48 000 Hz; 16 Bit; Stereo; AAC Video: 29,970 fps; 1920x1080 Progressive; YUV; 12 Mbps
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admin		#5 Posted : Wednesday, October 7, 2015 4:42:12 AM(UTC)
Rank: Administration Groups: Administrators Joined: 1/13/2010(UTC) Posts: 5,210 Location: Gold Coast, Australia Was thanked: 4292 time(s) in 1522 post(s)		Hi, Can you confirm you have the latest version of vMix and the Blackmagic drivers are up to date? If so, there are two different ways to output to the Blackmagic device in vMix either by selecting "Decklink Video Render" or by selecting the device name in the list, have you tried both of these options? If that doesn't help, please provide the system specs of the machine such as Windows version, Graphics Card, CPU etc. Thanks, Martin vMix
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ma65k		#6 Posted : Wednesday, October 7, 2015 6:29:47 AM(UTC)
Rank: Newbie Groups: Registered Joined: 10/6/2015(UTC) Posts: 3 Location: Russia		admin wrote: Hi, Can you confirm you have the latest version of vMix and the Blackmagic drivers are up to date? If so, there are two different ways to output to the Blackmagic device in vMix either by selecting "Decklink Video Render" or by selecting the device name in the list, have you tried both of these options? If that doesn't help, please provide the system specs of the machine such as Windows version, Graphics Card, CPU etc. Thanks, Martin vMix Windows 7 Professional, Intel Core i7 860 @2.80GHz, ATI Radeon HD 5800 Series, Scarlett 2i4 USB
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admin		#7 Posted : Wednesday, October 7, 2015 10:19:31 AM(UTC)
Rank: Administration Groups: Administrators Joined: 1/13/2010(UTC) Posts: 5,210 Location: Gold Coast, Australia Was thanked: 4292 time(s) in 1522 post(s)		Which device options have you tried in vMix Settings -> External Output?
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macgiver76		#8 Posted : Wednesday, October 7, 2015 12:33:04 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/29/2013(UTC) Posts: 98 Location: Italy Thanks: 5 times Was thanked: 4 time(s) in 4 post(s)		admin wrote: Hi, Can you confirm you have the latest version of vMix and the Blackmagic drivers are up to date? If so, there are two different ways to output to the Blackmagic device in vMix either by selecting "Decklink Video Render" or by selecting the device name in the list, have you tried both of these options? If that doesn't help, please provide the system specs of the machine such as Windows version, Graphics Card, CPU etc. Thanks, Martin vMix I Martin my pc: Windows 10 - CPU Intel i7 V3 5820 - Ram DDR4 16 GB - Video Card Nvidia 750 gtx. For external render: Decklink Quad (out4) - Driver BlackMagic: version: 10.5 Distance Stage-Vmix: 20 mt cable SDI. Thak
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admin		#9 Posted : Thursday, October 8, 2015 12:25:00 AM(UTC)
Rank: Administration Groups: Administrators Joined: 1/13/2010(UTC) Posts: 5,210 Location: Gold Coast, Australia Was thanked: 4292 time(s) in 1522 post(s)		Hi, I am currently running some output tests on the Decklink Quad using driver 10.5 and so far the audio appears to be ok. One thing to point out the external renderer isnt labelled Decklink Quad in vMix, so if you could confirm the exact naming I can confirm if it is correct. Also, any more information you can provide on the audio dropouts, what they sound like etc would be helpful. I am playing video clips with music on a constant loop, but if there is a particular type of audio that will show the issue more clearly let me know. Regards, Martin vMix
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macgiver76		#10 Posted : Thursday, October 8, 2015 6:52:17 AM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/29/2013(UTC) Posts: 98 Location: Italy Thanks: 5 times Was thanked: 4 time(s) in 4 post(s)		Audio that has the problem comes from a mixer Presonus FireStudio Project with ASIO drivers. If I can, I am sending you a link to a piece of video. Thank you.
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macgiver76		#11 Posted : Thursday, October 8, 2015 9:09:55 AM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/29/2013(UTC) Posts: 98 Location: Italy Thanks: 5 times Was thanked: 4 time(s) in 4 post(s)		Hello Martin, this is the link. Listen the audio.
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IceStream		#12 Posted : Thursday, October 8, 2015 9:37:49 AM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/7/2012(UTC) Posts: 2,636 Location: Canada Thanks: 33 times Was thanked: 506 time(s) in 475 post(s)		@ macgiver76 Honestly, I think you'd have to be an 'audiophile' to pick that up and be concerned about it (I didn't even notice it the first time through, although, I have to admit, I didn't know what I was listening for). Don't get me wrong, I'm all for "improving" things, but unless you can provide a better (or worse in this case) example, I think it's a problem I could 'live' with in the grand scheme of things. Just my thoughts. Ice
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admin		#13 Posted : Thursday, October 8, 2015 9:41:34 AM(UTC)
Rank: Administration Groups: Administrators Joined: 1/13/2010(UTC) Posts: 5,210 Location: Gold Coast, Australia Was thanked: 4292 time(s) in 1522 post(s)		macgiver76, So the problem is not the external output through Blackmagic but instead at the audio source via ASIO? If so, the ASIO device may have some settings utility to increase the buffer size to reduce dropouts.
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macgiver76		#14 Posted : Thursday, October 8, 2015 9:53:19 AM(UTC)
Rank: Advanced Member Groups: Registered Joined: 3/29/2013(UTC) Posts: 98 Location: Italy Thanks: 5 times Was thanked: 4 time(s) in 4 post(s)		ok the next event will try to increase the buffer. Thanks a lot.
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