Vertical video has moved from social-feed novelty to full-funnel engagement infrastructure for streaming services and social commerce platforms.

• Short-form vertical video is now the highest-ROI content format in marketing, with 49% of marketers naming it their top performer versus 29% for long-form and 25% for livestream, per HubSpot's "2026 State of Marketing Report."
• On the commerce side, 70% of US social buyers say they've bought something on TikTok in the last 12 months, per an April 2026 EMARKETER/Bazaarvoice survey.

Vertical video's expansion beyond social feeds into streaming apps and shoppable commerce has made it a standard format in the competition for attention. That opportunity also brings considerable challenges.

Streaming platforms are chasing engagement, not competing with TikTok

Netflix, Disney+, Peacock, and Tubi have all shipped swipeable vertical clip feeds inside their mobile apps in 2026, starting with Disney+'s "Verts" in March and Netflix's "Clips" at the end of April. None has confirmed ad inventory inside these feeds yet.

Netflix has been explicit that the goal is discovery, not a product to rival other vertical video platforms.

"Something more snackable" is how Netflix CTO Elizabeth Stone described the consumer need the feed is meant to meet, distinct from full-length viewing. Co-CEO Greg Peters has said the feed's use case will keep expanding beyond movie and show clips into newer formats, including the company's freshly launched slate of video podcasts.

While the vertical video infrastructure is now in place across major platforms, their ad products aren't yet.

Marketers aren't yet sold on the format

Only 12.8% of US marketers rated vertical video "very effective," compared with 30.7% for short-form social video and 31.2% for CTV overall, according to a 2026 Smartly/EMARKETER survey. The distinction matters: Vertical describes the orientation of a video (9:16, built for phones), while short-form describes its length and context (brief, feed-native content on social platforms). The two overlap heavily, but they aren't the same thing, and marketers appear to be judging them differently.

Vertical video also drew the largest "neutral" share of the three formats, at 28%, according to Smartly/EMARKETER. That suggests many marketers haven't formed a firm view yet. Adoption seems to be outpacing conviction, and the gap points to execution and measurement lagging behind where platforms are hoping to convert.

Consumer fatigue may be the format's real roadblock

As TikTok, Reels, Shorts, streaming apps, and a growing list of shoppable commerce feeds (TikTok Shop, eBay Live Shopping) all converge on the same vertical, swipeable algorithm, the format itself is becoming inescapable across a person's entire screen time beyond their social feed.

Academic research on short-form video fatigue points to a specific mechanism worth flagging: It's repetition, and not time spent, that eventually drains viewers’ attention.

• A 2025 peer-reviewed study by Communications in Humanities Research (CHR) on short-video consumption found that session length did not predict exhaustion, while exposure to repetitive, homogeneous content did, and researchers described the driver as "cognitive saturation" rather than duration.
• A separate 2026 Pace University study of continuous short-form viewing found consistently high fatigue and reduced attention among participants, even as their reported satisfaction stayed only moderate, uncovering the chasm between how much people watch and how much satisfaction they're actually getting out of it.

If fatigue tracks with content sameness rather than screen time, then Netflix's Clips feed, Disney+'s Verts, and a TikTok For You page competing for the same attention with structurally identical content delivery mechanisms may compound viewer saturation.

The solution lies in creating content that feels unique in pacing, voice, or purpose across TikTok, Reels, Shorts, and now streaming clip feeds. Creativity can go a long way to offer audiences a reason to keep engaging rather than tuning out in formats they're already saturated with across a swath of platforms.

Vertical video is driving revenue in ecommerce

While streaming figures out monetization, live and shoppable vertical video is already converting.

• TikTok Shop is projected to hit roughly $23.41 billion in US sales in 2026, up about 48.0% YoY, according to EMARKETER's November 2025 forecast, and the platform expanded its US livestream broadcast sessions more than 60% in H1 2026 alone.
• In its Q2 2026 earnings call, eBay noted eBay Live's gross merchandise value (GMV) jumped about eight times YoY across seven markets, with increases in viewers, watch time, and items sold.
• Live shopping events convert at up to 30%, against 2%–3% for standard ecommerce, according to Firework, which represents a gap wide enough that the QVC network now runs 200-plus hours of programming weekly across seven TikTok channels. Live-selling platform Whatnot reached a $20 billion valuation off $8 billion in 2025 sales to further prove the point.

Where to place vertical video investments:

• Reach versus readiness: Is the audience browsing (social, streaming clip feeds) or ready to buy (ecommerce livestreams, shoppable units)? Match the creative and CTA to that mindset.
• Format versus monetization: Streaming's vertical feeds offer scale and attention but no confirmed ad product yet, so treat them as a creative testing ground, not a media plan line item.
• Platform-specific execution: TikTok, Reels, and Shorts already need distinct creative. Streaming and ecommerce deserve the same rigor, with separate owners, KPIs, and measurement instead of one asset repurposed everywhere.

The brands that close the gap between adoption and measurement first, proving vertical video's return the way ecommerce already has, will set the terms when streaming inventory opens up.

This was originally featured in the EMARKETER Daily newsletter. For more marketing insights, statistics, and trends, subscribe here.