The enduring popularity of Vine and Instagram video proves that people use different video-sharing apps for different reasons. Vine's six-second loops seem like they're made for comedy, while Instagram's 15-second videos are like photographs put in motion. Ocho is a new iOS video-sharing app that lands squarely in the middle with eight-second clips, but it also has a slew of features--and some high-profile partnerships--that set it apart from the pack.

New York-based cofounders Jonathan Swerdlin and Jourdan Urbach started building Ocho two years ago with one question: "What would YouTube look like if it was started in 2013?" Swerdlin told Macworld. Videos finally looked good on phones, but this was before Vine, before Instagram video. No apps let you create and share videos on the go. Times have changed, but Ocho is debuting with a set of tools--and a bigger-is-better emphasis--that its established rivals don't have.

The case for another video-sharing app

When you scroll through Ocho's main feed, you'll notice that videos look like widescreen film clips. If you rotate your phone to browse in landscape mode, the clips take over your entire screen and auto-play one after the other.

"Ocho has been on trend with Apple's decision to empower the landscape orientation you're seeing with iPhone 6 and iOS 8," Swerdlin said. "We're seeing Apple start to respect that way of consuming content on your phone. Something like a square isn't taking advantage of the full screen."

You can shoot clips within the app or upload them from your Camera Roll. Like Instagram, you can slap a filter on your video, but Ocho takes editing further with a slider tool that lets you cut out background noise and add voiceover narration, a feature I haven't yet seen in other video-sharing apps. Ocho's founders decided to avoid text-based comments and instead allow video replies in an attempt to elevate the discourse on videos.

"Video and audio are dynamic mediums," cofounder Urbach said. "Text comments and other static comments don't make sense against a video. Comments on YouTube and on Vine--they're an absolute cesspool. It's really the bathroom wall. We're trying to get away from that."

Full-screen videos, voiceover, and clips-as-comments will make Ocho stand out once people sign up, but the new app doesn't have a powerful parent company promoting it like Vine and Instagram video did (with Twitter and Facebook, respectively). But Ocho does have seed funding from Mark Cuban and partnerships with Vice Sports and Showtime--and both media companies will be promoting Ocho on their respective sites. Showtime is using the platform to show eight-second clips of trailers for Homeland and The Affair, while Vice is offering up exclusive sports videos.

The point is to offer creators a way to create bite-sized, shareable videos--emphasis on shareable.

"The long-term sustainability of a platform depends on the way it integrates with the other parts of Internet," Swerdlin said.

Ocho just launched in the App Store on Tuesday, so long-term sustainability is a ways off, but the oversaturated social media market may need one more video-sharing app after all.