OnRenderImage() possibly did not write anything to destination texture/Muxing issue 2.35

[SpeedofDarkMusic]

I'm using FB360Capture360, imported package into my Unity 2018.3.14f1 session. VR Oculus project. I have an Nvidia GTX 1070 GPU. When I run the sample Unity session that comes with 2.35 it renders out an .mp4 totally fine. When I hit F2 in my session for a VOD capture (tired all resolutions) and using the standard equirect/RGBD-Capture it immediately gives error "OnRenderImage() possibly did not write anything to destination texture". I also turned off audio and mic capture. I can see in my target folder the h.264 file is created with 0 bytes but it's deleted when I hit F3. The log says the following:
[ 2019-12-14 15:34:56 ][INFO] Capture SDK Version: : 2.0
[ 2019-12-14 15:34:56 ][INFO] Graphics Card Info: : NVIDIA GeForce GTX 1070
[ 2019-12-14 15:34:56 ][INFO] Graphics Card Info: : Microsoft Basic Render Driver
[ 2019-12-14 15:34:56 ][INFO] Output folder already existed
[ 2019-12-14 15:34:56 ][INFO] Passed capture capability tests. Ready to start encoding
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : Headset Microphone (Oculus Virtual Audio Device)
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : Stereo Mix (Realtek High Definition Audio)
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : Microphone (Rift Audio)
[ 2019-12-14 15:34:56 ][INFO] Found VR audio device. We're using them as audio intput/output source
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : Headphones (Oculus Virtual Audio Device)
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : VX2433wm (NVIDIA High Definition Audio)
[ 2019-12-14 15:34:56 ][INFO] Audio device name: : RIFT VR HEADPHONES (Rift Audio)
[ 2019-12-14 15:34:56 ][INFO] Found VR audio device. We're using them as audio intput/output source
[ 2019-12-14 15:34:57 ][INFO] Start audio capture
[ 2019-12-14 15:35:13 ][INFO] Released wave file resources
[ 2019-12-14 15:35:13 ][INFO] Start audio transcoding
[ 2019-12-14 15:35:13 ][ERROR] Muxing failed, error: : 516
[ 2019-12-14 15:35:13 ][ERROR] Final vod muxing failed: 308

Any help would be greatly appreciated!