NVENC H.264 continer type and other info

I am trying to generate an NVENC H.264 that is compatible with Internet Explorer 11 HTML5 video tag. Device type is NV_ENC_DX9.

I know this is possible because Bandicam can produce such a file using NVENC.

However, using the SDK samples, the container type is always AVC. Bandicam produces a container type of MPEG-4 (Base Media). Bandicam also populates items like “Overall bit rate mode: Variable” and the encode date.

I do not seem to be able to find any documentation on how to do this in the NVENC SDK.

Can anyone point me in the right direction please?

yes , same to me.i need CBR of mode,but it’s VBR forever