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同一支舞、同一首歌的 2 到 6 段视频，录到了音乐就行。开拍早晚不同、长短不同都没关系，也可以只拍了其中一部分。2 to 6 videos of the same dance to the same song, with the music audible. They can start at different times and have different lengths; a video can cover just part of the song.

这里有三段示例视频（同一支舞、同一首歌，开拍时间不同）：take1.mp4、take2.mp4、take3.mp4。存到相册后，在 App 里把三段都选上就行。Here are three sample videos of one dance to one song, started at different times: take1.mp4, take2.mp4, take3.mp4. Save them to Photos and pick all three in the app.

在成片页点「编辑」，在「加一行文字」里输入歌名，想带队名就用「·」隔开（比如「青衫烟雨客 · 金秋舞蹈队」），再打开「加片头」。成片会先停 3 秒，宣纸上用毛笔字写着这行字，然后进入舞蹈。这是 Pro 功能。Tap Edit on the result, type the song's name under “Add a line of text” (add your group's name after a “·”), then turn on “Add a title card”. The film opens with 3 seconds of brush calligraphy on rice paper before the dance. This is a Pro feature.

在成片页点「编辑」，在「飘落」里选玫瑰花瓣、樱花、爱心、枫叶、星光、金粉、雪花、泡泡、彩纸或灯笼，最多同时选 3 个，再导出。它们会轻轻飘过整支舞。免费使用。Tap Edit on the result and pick from rose petals, blossom, hearts, maple, stars, gold, snow, bubbles, confetti or lanterns in the “Falling” row (up to 3 at once), then export. They drift gently over the whole dance. Free for everyone.

成片按你最清楚的那段视频的画质导出（最高 1080p），不会比原视频更模糊。但微信转发过的视频本身已经被压缩过，接出来只能和它一样清楚。想要最清楚的效果，让舞友用「隔空投送」或微信的「原图 / 文件」方式把原视频发给你，而不是在聊天里直接发视频。The film is exported at the quality of your sharpest video (up to 1080p) and is never softer than the originals. Videos forwarded through WeChat have already been compressed, though, and the film can only be as sharp as they are. For the best result, have friends send the original files by AirDrop or as a file attachment rather than as a chat video.

按音乐对齐需要视频里能听到音乐。请确认每段都是同一首歌、没有静音；音乐声太小或现场太吵时，可以加上这首歌的原曲文件帮助对齐。Lining up by the music needs the music in each recording. Make sure every video is the same song and not muted. If the music is quiet or the room is noisy, add the song file to help it line up.

在「原曲」里加入这首歌的音乐文件（mp3、m4a 等），舞接龙会自动对齐，用原曲代替整部成片的现场声音。Add the song's audio file (MP3, M4A…) under Original Song. It's lined up automatically and replaces the room sound for the whole film.

用你平时放歌用的那个文件：手机「文件」App、iCloud 云盘里的 mp3/m4a/wav，或者微信里别人发的音乐文件（长按 → 用其他应用打开 → 存储到「文件」）。一段带这首歌的视频也可以。然后在首页点「原曲」选它。Use the file you normally play the song from: an MP3/M4A/WAV in the Files app or iCloud Drive, or a music file someone sent you in a chat app (save it to Files first). A video that contains the song works too. Then tap Original Song on the home screen and pick it.

多半是版本不同：现场放的是伴奏版、加速/减速版、或者另一位歌手的版本。换成现场真正播放的那个文件就能对上。实在没有原曲，不加也行，舞接龙会用视频里录音最清楚的那段。Most often it's a different version: an instrumental, a sped-up or slowed edit, or another singer. Use the exact file that was played in the room. If you don't have it, skip it: DanceChain uses the clearest recording among your videos.

不会。原曲是整首连续播放的，画面在中间切换，音乐不断、不跳。No. The song plays straight through; only the picture switches.

「自动精选」按动作和人数给每一段挑最好看的视频；「轮流接力」让每个视频轮流跳一段，按人数从少到多（或按你排的顺序）。Best Moments picks the best-looking video for each part from the moves and the number of dancers. Take Turns gives every video an equal turn, from fewest dancers to most (or in your order).

可以。在成片页点「编辑」：拖动切换点、给某一段换视频、分成两段或并入旁边的一段，然后重新导出，只要几秒。Yes. Tap Edit on the result: drag switch points, use a different video for a part, split a part or merge it into its neighbour, then re-export in seconds.

做好的成片在 App 里；点「保存到相册」后会出现在 iPhone 的「照片」里。也可以直接分享到微信、抖音、小红书等。Finished films stay in the app. Tap Save to Photos to put them in your Photos library, or share them straight to WeChat, Instagram, TikTok and more.

所有功能都能用、能预览，前 3 部成片可以免费保存或分享（原画质，角落带「舞接龙」水印）。之后保存和分享需要 Pro（按月、按年或终身），Pro 的成片没有水印。Every feature can be used and previewed, and your first 3 films can be saved or shared for free at full quality (with a small DanceChain mark in the corner). After that, saving and sharing need Pro (monthly, yearly or lifetime); Pro films have no mark.

用同一个 Apple 账户登录，打开 App 的「设置 › 恢复购买」即可。Sign in with the same Apple Account, then tap Settings › Restore Purchases in the app.

打开 iPhone 的「设置 › 你的名字 › 订阅」，选择舞接龙后取消。当期结束前 Pro 仍然可用。免费试用期内取消不收费。Open your iPhone's Settings › your name › Subscriptions, choose DanceChain and cancel. Pro keeps working until the end of the period. Cancelling during the free trial costs nothing.

退款由 Apple 处理：请到 reportaproblem.apple.com 申请。Refunds are handled by Apple at reportaproblem.apple.com.