Hi!
Please check whether the version of the camera is an officially released version. If the version of a camera is not an officially released version, the camera cannot use the connection protocol ONVIF and the encoding protocol H.265 at the same time.
• If the camera uses a non-officially released version, upgrade it to an officially released version.
• If the camera uses an officially released version, contact Huawei's technical support engineers for assistance.
Thanks!