New tests done here: I've installed vMix on another machine (Xeon W3520, 12 Gb RAM, GT 705), and still having the same issue with stuttering video every 5 seconds or so, when the camera sends a 720p, 4M, 30fps stream. So if someone knows a fix, or a workaround, it would be great ! I've also contacted Foscam's tech support, but as this is not happening under VLC (nor the embedded webinterface of the camera), I was thinking it may be an issue with vMix itself. Is anyone encountering the same issue with his IP cam via RTSP ? 4M, 30 fps : Stuttering (every 5 seconds) 4M, 25 fps : Stuttering (every 5 seconds) 2M, 30 fps : Stuttering (every 5 seconds) 2M, 25 fps : Stuttering (every 6 seconds) 512K, 30 fps : Stuttering (every 5 seconds) 512K, 25 fps : Stuttering (every 10 seconds) 512K, 20 fps : Stuttering (every 30 seconds) I've put something moving in front of the camera, and did the following tests (always with 720p, key frame interval at 30, and variable bitrate):
I've tested different settings combinations on the camera, to see if I can remove completely the stuttering issue. I did some experimentation with vMix and the Foscam FI9826W. The camera ping over my wired gigabit network is less than 1ms, for every request, so the network works fine. This extends a little the "smooth" period, but doesn't remove the freeze. I've also tried increasing the buffer time to 750 / 1000ms. But the Queued images drop to 0, and a few frames are added to the "Resync" column. When the camera source freezes, vMix is still operational: I can switch sources etc. Source Dropped: 1106 / Renderer Dropped: 27 / Resync: 31 / Queue: 5 / Video: 0 ms Buffers: V267ms. I've also noted down the data in the statistics window after a few minutes of use: CPU usage is around 5%, render time 3ms, so everything looks fine on the machine itself. But every 5 seconds, the camera source freezes for 1 second in vMix (not in VLC, nor the webinterface of the camera), then works again for 5 seconds, and freezes for 1, etc.
I encounter an issue with a Foscam IP Camera (FI9826W): I connect via RTSP (TCP or UDP: same issue), vMix displays the live stream, so OK. Not a powerhouse, but works ok with USB cameras). VMix 15.0.0.74 (64 bits) is installed on a Windows 7 圆4 SP1 machine (Core i5-4460, 8Gb RAM, Nvidia Quadro FX 580. I'm a french user of vMix (so please excuse my mistakes in english :-) ). This is my first post, even if I have been reading the forum for a while now.
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