Filter For openVidu

Question

I'm using the openVidu in my project, for making calls

for that I'm using filter which is GStreamerFilter (textoverlay)

I have a good related to it in two different locations first part:

const filter: any = {
            type: "GStreamerFilter",
            options: {
                command: 'textoverlay text="' + LabelUserName 
                + '            " valignment=top halignment=center font-desc="Arial, 12"'
            }
        };
         
        const properties = this.openViduWebRTCService.createPublisherProperties(videoSource
            , audioSource
            , true
            , hasAudio
            , false
            , filter); 

the second part of code:

publisher.stream.applyFilter(
                    "GStreamerFilter", 
                    {'command': 'textoverlay text="' + LabelUserName
                    + '            " valignment=top halignment=center font-desc="Arial, 12"'}
                ); 

My question(s):

• Can I use another filter in the GStreamerFilter at the same time with textoverlay , for example applying clockoverlay and textoverlay together at the same time ?! and if yes how to do that?!

• Can I apply a virtual background with the GStreamerFilter at the same time?

Please note that I'm using openVidu Pro.