Prerecorded video-only: Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.

预先录制好的纯视频：为预先录制好的纯音频内容提供一个用于展示等价信息的的基于时间的媒体或者音轨的替代方案。

youdao

Now, they only communicate over the phone or video call.

现在，他们只通过电话或视频通话进行交流。

youdao

It only became popular later on video and it was based on a book by Stephen King.

它后来才在视频上盛行起来，是根据斯蒂芬·金的一本书改编的。

youdao

That would be through Gambitious, a video game-only crowdfunding site that allows backers to actually buy equity in projects in some cases.

FORBES: Duke Nukem's 3D Realms Crowdfunding (Not Kickstarting) Their Next Project, Earth No More

Get ready for the second major wave of video chatting -- not only is Apple about to bring video calling to the masses with the iPhone 4, but Skype today announced the SkypeKit beta SDK, which devs can use the SDK to interface their apps and devices directly with Skype's service starting tomorrow.

ENGADGET: SkypeKit beta SDK adds Skype to any application or device

For instance, the Music Player sub-menu fails to filter out ringtones, and the Video Player sub-menu only managed to load the latest few clips taken with the phone's camera.

ENGADGET