Can AI edit a two- or three-hour video?

Yes. Valmera accepts recordings up to 3 hours and 100 GB per file. Upload the full episode, webinar or lecture, describe the result you want, and the AI agent maps the topics, cuts it down and captions it. You review the preview and export a full-resolution MP4.

My file is under 100 GB but longer than 3 hours. Can I upload it?

No; both limits apply. Split the recording at a natural topic break and edit each part as its own project. Compressing the file makes it smaller but doesn’t make it shorter.

How long does it take to edit a long video with AI?

The upload and the one-time index scale with the file’s size and length, so a 3-hour recording takes longer to prepare than a short clip. After that, each request returns a rendered preview, and the index is reused for every later request.

Can I import a long video from a link instead of uploading it?

Link imports are capped at 1 hour and 500 MiB (checked September 8, 2026). For anything longer, upload the file directly, which accepts up to 3 hours and 100 GB.

Can the AI keep only one speaker’s answers?

Yes. The transcript carries speaker labels, so you can ask for “only the guest’s answers about pricing” or “cut the host’s long intros.” Check names and any overlapping speech in the preview.

Can one long episode become several shorts?

Yes. The clipping agent finds complete stories in the recording and turns each into its own short, which the agent then edits with 9:16 framing and captions.

Will the final MP4 keep the source quality?

The final export is rendered from your original file as a full-resolution H.264 MP4; previews use a lightweight proxy. Your original upload is never modified.

Edit Long Videos With AI: Podcasts, Webinars and Lectures up to 3 Hours

Valmera edits recordings up to 3 hours and 100 GB per file. Upload a full podcast episode, webinar, lecture or stream and describe what your audience should get: a tighter full episode, a highlights cut or a set of shorts. The AI agent maps the topics, cuts it down, captions and polishes it; you review the preview and export a full-resolution MP4.

It is the same AI video editor as for short clips, with a workflow tuned for length: map first, approve the structure, then finish. Download the long-recording editing brief to plan yours.

Upload Your Longest Recording

Up to 3 hours and 100 GB per file. Creating an account and uploading are free; editing requires a subscription.

Create an account →

See pricing →

Long-Video Limits

Limit	Valmera
Duration	Up to 3 hours per file
File size	Up to 100 GB per file (15,032,385,536 bytes, which is 14 GiB)
Formats	MP4, MOV, M4V, MKV, WebM
Images and music	Up to 50 MB each
Video imported from a link	Up to 1 hour and 500 MiB (checked September 8, 2026); upload longer files directly

Too large but short enough: export a copy at a lower bitrate. Two hours at an average 10 Mbps is about 9 GB.
Too long: split at a natural topic break and edit each part as its own project.
Not sure? Estimate file size from duration and bitrate with the free video bitrate calculator.

Keep the browser tab open until the upload finishes; the index then builds once and is reused for every request. Details are in the upload guide, and browser-based editing in general is covered on the online video editor page.

How to Edit a Long Recording With AI

1
Decide the deliverable
A tighter full episode, a highlights cut or separate shorts. Note the target length and format, and the passages that must stay.
2
Upload and let it index
Valmera builds a word-level transcript with speaker labels, plus shots, silences and frames, once for the whole recording.
3
Ask for a topic map first
Have the agent list the topics with source timestamps and flag repetitions before it changes anything.
4
Test the cleanup on one passage
Approve how tight the cuts are on a few minutes before applying the same treatment to the whole recording.
5
Approve the structure, then finish
Once the cut is right, add captions, titles, music and framing, so they are timed to the final edit.
6
Review the whole program and export
Watch the topic transitions and the late sections, then export the full-resolution MP4.

Three Things a Long Recording Can Become

Deliverable	Ask for it like this	What the agent uses
A tighter full episode	“Remove dead air, restarts and the tangent about equipment; keep every answer.”	`cut_silences` `remove_filler_words` `cut_range`
A highlights cut	“Make a 20-minute version built around the three biggest topics.”	`get_editorial_map` `keep_segments`
Shorts	“Find the complete stories and make each one a short.”	`make_shorts`, then one edit per short

Shorts have their own workflow on the AI clipping agent page. For a full rough cut from a single message, see the autonomous video editor guide.

Example: Cutting a Two-Hour Interview to About an Hour

Start with a map, not a cut. Here is a source map for a two-hour interview heading for a 60–75-minute episode:

Source time	What’s there	Decision
00:00–04:00	Opening and introductions	Keep enough to identify the guest and topic
32:00–38:00	Product demonstration	Protect it whole: the explanation and the result
71:00–78:00	Possible repeat of an earlier point	Compare with the first version before cutting
108:00–120:00	Conclusion and sign-off	Keep the final answer and the intended ending

Ask for the map first:

“Map the topics in this recording with source timestamps. Flag repetitions and anything you’re unsure about. Don’t change the edit yet. I’m aiming for a 60–75-minute episode, and 32:00–38:00 must stay whole.”

Then test the cleanup on one passage:

“Tighten source 12:00–15:00 only: remove clearly unnecessary gaps, keep breaths and deliberate pauses, and keep each question with its answer.”

Going from 120 to 75 minutes means removing 45 minutes. Silence removal alone rarely gets you there, so choose the topics the audience can do without. When you give timestamps, say whether they are from the original recording or the current preview: after the first cuts they differ. The AI video editing explainer shows why.

Map Your Recording Before You Cut It

Upload the full episode and ask for a topic map. Creating an account and uploading are free; editing requires a subscription.

Create an account →

See pricing →

Long-Video Limits in Other Editors

Editor	Per-file limit	Source
Descript	Up to 50 GB per file, depending on plan	Descript pricing
OpusClip	10 GB and 10 hours for local uploads	Local-file uploads
VEED	1 GB per file on Free; no per-file cap on paid plans, with projects recommended under 5 GB and about 4–5 hours	Upload guidance
Kapwing	6 GB on paid plans with a 2-hour processing limit; its pages list different Free sizes	Upload requirements · Pricing
Submagic	3,000 MB per video; duration caps vary by plan, with a separate long-video clipping mode	Size limits · Magic Clips
Vizard (API)	10 GB and 600 minutes for API URL input	API setup
Valmera	100 GB and 3 hours per file, both limits applying	Upload guide

Competitor limits checked September 8, 2026, from each vendor’s own pages. Upload size, source duration, monthly allowances and export length are different limits, so check the one your project hits first.

Review the Whole Program Before Export

Topic transitions: does each new section still make sense after the cuts before it?
Late sections: check captions and framing in the last hour, not just the opening.
Speakers: confirm names and that questions stay with their answers.
Ending: make sure the final answer and the sign-off you wanted survived.

Every edit is a new version and your original file is never modified, so a wrong cut can be restored. See timeline and transcript.

Limits

One main video per project: no multicam sync of separate camera files.
Captions are burned in, with no SRT or VTT export; chapter titles appear as on-screen cards, not platform chapter metadata.
English is the best-tested transcription language.
No direct publishing to YouTube: download the MP4 and upload it.