We have been streaming to Tik Tok via RTMP from vMix for over a year with no issues until today. Re-generating the Tik Tok key several times did not solve the issue. Streaming to the same account from OBS worked fine.

Any ideas what this error might mean? "Operation not permitted" seems like it might be important...



FFMPEG1.Exited
Metadata:
encoder : Lavf57.82.101
Stream #0:0: Video: h264 (h264_nvenc) (High) ([7][0][0][0] / 0x0007), yuv420p, 720x1280, q=-1--1, 2500 kb/s, 23.98 fps, 1k tbn, 23.98 tbc
Metadata:
encoder : Lavc57.106.101 h264_nvenc
Side data:
cpb: bitrate max/min/avg: 2500000/0/2500000 buffer size: 1250000 vbv_delay: -1
Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 256 kb/s
Metadata:
encoder : Lavc57.106.101 aac
[rtmps @ 0532de20] Server error: func:OnStatus:func:RtmpStatusCode2NssError:invalid_sign
av_interleaved_write_frame(): Operation not permitted
Last message repeated 1 times
[flv @ 05327600] Failed to update header with correct duration.
[flv @ 05327600] Failed to update header with correct filesize.
Error writing trailer of rtmps://push-rtmp-f5-tt01.fcdn.us.tiktokv.com:443/game/stream-3569620611980853532?expire=1652489396&sign=5873832409d130e8e18e609c5772d80d: Operation not permitted
frame= 6 fps=0.0 q=12.0 Lsize= 40kB time=00:00:00.23 bitrate=1397.8kbits/s speed=0.68x
video:52kB audio:6kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[aac @ 0532c5e0] Qavg: 256.401
Conversion failed!