Home › Forums › Breakaway Professional Products – [discontinued] › ASIO input – Pipeline output
- This topic has 4 replies, 3 voices, and was last updated 14 years, 3 months ago by JesseG.
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July 21, 2010 at 8:39 pm #903AnonymousGuest
We currently have the following configuration:
Analog Sound Board –> USB audio encoder –>DS–> Breakaway live –> DS –> Pipeline 1 –> Wirecast on a quad core 6Gb 2.6Ghz Windows 7-64 machine.
We really appreciate the processional quality Breakaway has added to our video recordings and would like to improve them further. We are experiencing variable audio over video delays of 250 to 750ms when examining the encoded output of Wirecast. Our test indicate the main issue is the audio capture process. The other day we made a dozen 3-5 minute recordings and the audio was increasingly delayed for each of the recordings (1st 288ms, the last 750ms). From my reading there are numerous buffers in the windows audio model which add to the delay. Our goal would be to get the audio delay consistent and below the video process delay so we can then set audio delay in Breakaway Live to align with the video. We attempted to do this with a PreSonus FireWire mixer and Breakaway set for ASIO. However when we set Breakaway for ASIO we lose the pipeline to feed audio into Wirecast. We really liked the low noise and low latency of ASIO, but could not configure Breakaway to feed into Wirecast. Question: is there a way to configure Breakaway Live for ASIO input and Pipeline out? Or a way to feed ASIO output into non-ASIO applications and still achieve low latency? Would like to hear from anyone who has worked this or a similar issue.
Thanks,
ReynoldJuly 21, 2010 at 9:08 pm #11096yorkie98ParticipantMaybe download the free resampler app and see if this keeps things in sync (this app may however add a small but consistent delay). Most likely the sync for your video source and the audio are drifting off slightly due to clock speeds in soundcards never quite beeing 100% accurate. This app MIGHT help you compensate for this especially if you can get it to lock to the clock on your ASIO card.
Yorkie.
July 22, 2010 at 1:52 pm #11097AnonymousGuestBefore trying a resampler, I first need to be able to configure Breakaway Live for ASIO input and Pipeline output so the Breakaway Live out can be fed into Wirecast.
Reynold
August 7, 2010 at 3:35 pm #11098AnonymousGuestThanks Yorie. Did use the resampler tool to calibrate Breakaway Live input and output buffers. Nice tool. Did improve noise level and sound quality and reduce latency somewhat. But that still begs our original issue. Question: How does one configure BA Live to use an ASIO device as an input source and the BA Live pipeline channel as an output device? We really need to feed the output of BA Live into another program on the same computer.
Thanks,
ReynoldAugust 8, 2010 at 6:52 am #11099JesseGMemberIt should be quite low latency even with KS, if you’re able to optimize the buffers to the point where the machine’s DPC latency is the only bottleneck.
What core mode are you using in Breakaway… Phase Linear? or Extra Low Latency?
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