IPVMU Certified | 02/28/14 11:45pm
I researched this a few years ago and the only VMS I tested at the time that really syncronized audio and video was DVTel Latitude. I don't know if any of the others have gotten any better since that time. When I was doing my testing, most of them were terrible. Some were out of sync by 2 seconds or more.
Your customer wants a camcorder, not a CCTV camera.
Thanks all. Audio is always a pain especially when the customers demands are as high as this.
Years ago I helped solve the same problem for Si's looking to handle custodial interview room applications in law enforcement settings. The best product (in the security industry IMO) at the time was a Sanyo MPEG-2 based DVR (DSR-M810) we developed a special SQL based windows app for the non technical user that allowed easy case management and file storage options. When Sanyo went away we worked close with 3xLogic engineering to tweak our user application to integrate with the 3xLogic Vigil hybrid platform. We have achieved solid synch results at least for 'law enforcement' applications using analog or IP cameras the trick is we always land the analog audio signal on the capture card audio inputs. The IP systems I helped out with typically were on a dedicated network segment so traffic was typically not an issue. The best alternative to the hybrid multi channel DVR that I can think of is right out of the A/V world I have reccomeded product from Data Video which is based in So Cal their base product accepts standard NTSC video and analog audio and encodes directly to AVI. The 3xLogic recorder encodes in h.264 which as others has stated in this thread stores the video and audio seperate, it stays that way in the export process unless the user selects AVI export. The Data Video product looked good to address the post recording editing requirement that city had asked for. Most editing applications ingest the AVI files straight away.