Direct answer: The first thing an app ad video needs to convey is not "how many features this app has," but "when will users need it." First establish a small problem, a choice, or an action, then let the service enter the frame along with the action; the interface is only there to provide evidence, not to open the story.
This is not an argument against feature demos. For products that require comparing steps, permissions, or data results, the interface remains key evidence. The issue is that mobile viewing does not automatically grant a screen recording more patience: viewers first need to know how this matters to them before they will want to see how the feature solves it.
Translate the feature into a "happening right now" moment
Before writing the script, rewrite the product capability into a shootable scene: not "supports travel connectivity," but "someone still needs to confirm the next leg of a trip while in transit"; not "provides lifestyle services," but "needs to handle a small task temporarily without spare time." This sentence directly determines the character, action, location, and what should appear in the first frame.
The Huawei App Services dramatic short video case gives a clear reference: different life scenarios each host a need; the app doesn't rush to explain itself but appears when the plot needs a turning point. Its value is not in covering every service, but in making viewers remember "so this is where it helps."

When should interface evidence appear
A practical sequence is: situation → action → visible result → interface evidence. The first three steps help people understand "why it's needed," and the last step answers "how it works." If the first screen continuously shows menus and buttons, the brand often gets an explanation rather than a remembered experience.
Google Ads' App campaigns video asset best practices suggest entering the app experience quickly, establishing a hook within the first 2–3 seconds, and providing multiple video assets in landscape, portrait, and square formats; this also means the script should not reserve "the first second" only for the splash screen. Meta's Instagram video ad creative advice similarly emphasizes presenting the brand and core message early. For creative teams, the solution is not to pack information tighter, but to let the brand, problem, and action be seen in the same frame.

One video answers only one question; versions create space
You can first write a "moment card" for each piece of content: who is where; what is blocking them; how the service makes the step smoother; what visible result is left at the end. Then from the same footage, extract different versions: one focused on scene resonance, one supplementing operational evidence, one rearranging the first frame for portrait placement. This does not avoid product complexity, but gives it to an ordered version system.
If the product truly requires more complete task and interface explanations, continue reading How to Write a SaaS Product Demo Video Script: it addresses a different type of problem — when viewers are already in the evaluation stage, how to make interface evidence serve specific tasks. Neither approach is superior; the difference lies in whether the user needs to first understand "why" or first confirm "how."
A good app ad does not hide the app, but lets it appear at just the right moment. First shoot what the user needs to accomplish, then decide how much interface is needed — this is often more honest than listing features first and finding a plot later, and easier to break into assets that withstand different markets and placements.
