To include a 1280×720 MP4 video ad placement in their new In-Stream Video campaign, the realtor should enable the desired option in the transcode list.

• Submit a new tag to publishers who will then serve the video ad.
• Enable the desired option in the transcode list.
• Select any transcode with a video bit rate of 1500 kbps or higher.
• Enable every horizontal transcode option in the list.

The correct answer is: Enable the desired option in the transcode list

Explanation: The answer “Enable the desired option in the transcode list” is correct.

To support the 1280×720 MP4 video format for the new in-stream video placement in Campaign Manager 360, the realtor needs to enable the corresponding 1280×720 MP4 option within the transcode settings of that specific placement. Campaign Manager 360 transcodes uploaded video creatives into various formats and resolutions to ensure compatibility across different publishers. By selecting this specific option, they ensure their video creative will be processed and available in the required format and resolution for that particular ad placement.

Here’s a relevant link from Google’s official content:

In-stream video settings – Campaign Manager 360 Help: https://support.google.com/campaignmanager/answer/7173678

Within this page, the “Transcoding settings” section explains how to manage the video formats and resolutions that Campaign Manager 360 will generate for a placement, including enabling specific options like 1280×720 MP4.