OK...

We are using a Paid version of the HD VMIX 17.0.0.111 64bits

Streaming to Youtube, and Facebook. (also cant stream to Youtube and 2 facebook acc at same time), same error occur.

IF we start to record before stream, this error occor:

Log:

FFMPEG.Exited
Metadata:
encoder : Lavc57.3.100 nvenc
Stream #0:1: Audio: aac (libfaac), 48000 Hz, stereo, s16, 128 kb/s
Metadata:
encoder : Lavc57.3.100 libfaac
Output #1, flv, to 'rtmp://rtmp-api.facebook.com:80/rtmp/1804727846405910?s_l=1&a=AaZ6zNc-OmGTRpG0':
Stream #1:0: Video: h264, none, q=2-31, 128 kb/s, 29.97 fps
Metadata:
encoder : Lavc57.3.100 nvenc
Stream #1:1: Audio: aac, 0 channels, 128 kb/s
Metadata:
encoder : Lavc57.3.100 libfaac
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (nvenc))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (libfaac))
Stream #0:0 -> #1:0 (rawvideo (native) -> h264 (nvenc))
Stream #0:1 -> #1:1 (pcm_s16le (native) -> aac (libfaac))
Error while opening encoder for output stream #1:0 - maybe incorrect parameters such as bit_rate, rate, width or height
[dshow @ 029c94e0] real-time buffer [vMix Video] [video input] too full or near too full (89% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 029c94e0] real-time buffer [vMix Video] [video input] too full or near too full (90% of size: 256000000 [rtbufsize parameter])! frame dropped!