There are three honest ways to add subtitles to a long video, and the right one depends on where the video is going. If it is a full-length upload to YouTube, let YouTube Studio caption the whole thing and correct the draft there. If you need styled captions burned into the full video, split it into parts under 10 minutes in a video editor and caption each part. If what you really want is short clips from the long video, cut the best moments with a clip tool and caption only those.
We say this up front because CapsAI, like some other caption tools, caps video length: it captions videos of up to 10 minutes each, so a 60-minute recording does not go in as one file. Below are a decision table, the three routes, and what each costs per hour of video as of 19 October 2026.
The 10-minute limit, and what it means
Shorter parts are easier to proofread anyway: a one-hour caption draft is a lot to check in one sitting. CapsAI's limit is 10 minutes per video, as an MP4 or MOV, with files up to 500 MB on a free account or 10 GB with a pack. The uploader tells you when a file is longer than that. There is no trim or split tool inside CapsAI, so a long recording has to be cut in an editor first, or clipped with Smart-Clips.
That limit also shapes the cost. A 60-minute recording split into six parts uses 60 caption minutes, which is exactly the $9 Creator pack.
Which route fits your video (19 October 2026)
| Your video | Where it goes | Best route | What you end up with |
|---|---|---|---|
| 30 to 120 minutes, talk or lecture | YouTube, full length | Route 1, YouTube Studio | A caption track viewers turn on or off |
| 30 to 60 minutes, needs styled on-screen captions | Course site, LinkedIn, a client | Route 2, split into parts under 10 minutes | One captioned MP4 per part |
| Podcast, webinar or stream up to 120 minutes | Shorts, Reels, TikTok | Route 3, Smart-Clips, then caption the clips | Vertical clips with captions |
| Longer than 120 minutes | YouTube, or anywhere else | Route 1 on YouTube; elsewhere, cut it into shorter files first | Depends on the route |
Route 1: YouTube Studio captions for the full upload
YouTube can caption a long upload itself. Its help page on automatic captioning lists the supported languages and says that "If automatic captions are available, they'll automatically be published on the video", though they "may not be ready at the time that you upload a video". To review them, sign in to YouTube Studio, choose Subtitles from the left menu, pick the video, and edit the automatic track.
The same page lists reasons automatic captions may not appear, and one of them is simply "The video is too long." YouTube does not give a number. Others are poor sound, a long silence at the start, and overlapping speakers or languages. So a very long upload is not guaranteed a caption track, and you should check it after processing.
This route gives you closed captions, a track viewers switch on, not text burned into the picture. For when that is enough and when to add both, see YouTube auto captions vs burned-in subtitles. The cost is your time correcting the draft.
Route 2: split into parts under 10 minutes
When the captions must be on the video itself, cut the recording into parts of 10 minutes or less in any editor, export each part as an MP4, and caption each one. In Clipchamp, Microsoft's help article on splitting gives the steps:
- Click the video on the timeline so it is highlighted.
- Move the seeker to where you want the cut, using the timecode above the timeline.
- Click the split button, the scissors icon, or use the keyboard shortcut.
The video becomes two pieces on the timeline, and you can select and delete footage you do not need. Exporting each part as its own file is then up to you; the help article covers the split, not the export.
Cut at natural breaks rather than at exactly 10:00. The guides to captions for online courses and lectures and captions for Zoom recordings and webinars explain where to cut and why chapters help viewers, so we will not repeat that here.
Then caption each part in CapsAI: upload it, choose the spoken language, read the draft and fix any words, pick a style, and export. Use the same style for every part so they match. If you need one file at the end, join the captioned parts back together in the same editor.
Keeping six parts consistent
A long video captioned in parts only looks like one video if every part is handled the same way. A few habits help:
- Name the files in order before you upload, such as part-1 to part-6, so the exports come back in sequence.
- Trim dead air at the start of each part. It saves caption minutes, and a few seconds of silence at the top of every part reads badly once they are joined.
- Keep a list of names and terms that must be spelled right, and search each draft for them. The same speaker names and product words come back in every part.
- Pick the style, size and position once, write them down, and repeat them for each part.
- Download each MP4 as you finish it. Projects are kept for 3, 7 or 15 days depending on the pack, so a long job spread over a week can outlast its first project.
If you already edit in Clipchamp, there is a simpler option worth knowing. Clipchamp's subtitle generator page says autocaptions are free for all users and that "There are no limits on generating subtitles for a video in Clipchamp." It also downloads the transcript as an SRT file, which CapsAI does not. Clipchamp auto subtitles walks through it.
Route 3: clip the best moments with Smart-Clips
If the long video is raw material for short posts, captioning all of it is wasted effort. Smart-Clips takes an MP4 or MOV of up to 120 minutes, finds moments, scores each one, reframes it to vertical 9:16 and can burn simple white captions into each clip. It runs as a video clip cutter online, in the browser, so there is nothing to install. You can ask it to find clips about a topic and choose a clip length: Auto, which picks between 15 and 90 seconds, or 15, 30, 45 or 60 seconds. Each clip comes with a score and a short reason, so you can drop the weak ones before you spend caption minutes on them. To use one of the 37 caption styles instead of plain white captions, open a clip in the caption editor.
There is no YouTube link import, so upload the file. Smart-Clips minutes are a separate balance from caption minutes, shown in your workspace, and are deducted for the full length of the recording. Styled captions on a clip then use caption minutes for that clip's length. The long video to short video page covers the workflow in more detail.
Cost per hour of video, compared (19 October 2026)
| Route | What you pay | Cost for one hour of video |
|---|---|---|
| YouTube Studio automatic captions | Included with the upload | Your editing time |
| Split, then caption with CapsAI | One-time packs: $4 for 20 minutes, $9 for 60, $19 for 180 | $9 on the 60-minute pack; about $6.33 an hour on the 180-minute pack |
| Smart-Clips, then styled captions on chosen clips | Smart-Clips minutes for the full recording, shown in your account, plus caption minutes per clip | Depends on how many clips you caption |
In India the packs are ₹49, ₹99 and ₹299, and in the euro area €4, €9 and €19. Transcription uses caption minutes one for one. Each project's first export is included, and exporting the same video again in a new style costs its length again, so settle on a style before you caption six parts.
Free options
If free is the requirement, the free routes for a full-length video are YouTube Studio's automatic captions and Clipchamp's subtitles, which Clipchamp's pricing page says export up to 1080p with no watermarks on its free plan. CapsAI gives 3 free minutes to start, enough to test one short part and judge the draft, not to caption an hour. Watermark-free export comes with every paid pack.
What to do next
Pick your route from the table. For Route 2, export the first part, caption it on the 3 free minutes, and check the draft before you buy a pack on the pricing page. For Route 3, check your Smart-Clips balance in your workspace before you upload a long episode, then start in Smart-Clips.
