AI Video Commentator
Upload any clip and let AI watch it, pick the best moments, and add spoken commentary with natural voices and animated captions. The fastest way to add commentary to a video for TikTok, YouTube Shorts, and Reels, no mic or recording required.
AI Video Commentator
AI watches your video, picks the best moments, and narrates them with your chosen voice.
Upload your video
MP4, MOV, WebM up to 500MB
Free to start ยท no credit card required
Aspect ratio
See the AI commentary in action
Add commentary to a video in 4 steps
Upload your video
Drop in any clip: a sports highlight, gameplay, a movie scene, or footage you filmed. MP4, MOV, or WebM up to 500MB.
AI watches and writes the commentary
The AI watches your footage, understands what happens in each moment, and writes punchy narration that reacts to what is on screen.
Pick a voice and tone
Choose a natural AI voice and set the mood: documentary, funny, dramatic, or engaging. The AI voices the script and mixes it over your original audio.
Post it everywhere
Download a captioned video ready for TikTok, YouTube Shorts, and Instagram Reels, or keep editing it in the StoryShort editor.
Why creators use this AI video commentator
AI that watches your video
The AI actually sees your footage and comments on what happens, so the narration matches the action instead of a generic voiceover.
Natural AI voices
Pick from a range of realistic voices. No microphone, no recording, and no awkward re-takes.
Four commentary tones
Go serious documentary, laugh-out-loud funny, edge-of-your-seat dramatic, or clean and engaging in one click.
Keeps your original audio
Commentary is mixed over your original sound at a balanced level, so the moment still lands underneath the narration.
Auto captions that pop
Word-by-word animated captions are burned in automatically, the style that keeps viewers watching to the end.
Ready in minutes
Go from a raw clip to a fully narrated short in minutes, generated in the background while you do something else.
Who the AI video commentator is for
Sports and highlight creators
Turn game highlights into narrated recaps with real play-by-play energy.
Reaction and commentary channels
Add sharp commentary to any clip without filming yourself talking to a camera.
Gaming creators
Narrate gameplay moments and funny fails with the perfect tone, hands-free.
Educators and explainers
Turn raw footage into clear, narrated explainers your audience actually watches.
Why creators choose StoryShort over recording commentary yourself
| StoryShort | Recording it yourself | |
|---|---|---|
| Setup | Just upload a clip | Mic, a quiet room, and a written script |
| Writing the script | AI watches and writes it for you | Rewatch and write every line by hand |
| Voice | Natural AI voices, no re-takes | Record, flub, and re-record |
| Original audio | Auto-mixed underneath the narration | Balance the levels manually |
| Captions | Auto, animated, word by word | Added in by hand |
| Time to publish | Minutes, fully automated | Hours of writing, recording, and editing |
What is an AI video commentator?
An AI video commentator is a tool that watches your video, understands what is happening on screen, and automatically adds spoken commentary. Instead of writing a script, recording a voiceover, and syncing it by hand, you upload a clip and the AI generates the narration, the voice, and the captions for you.
StoryShort's AI commentary generator is built for short-form video. It picks the most interesting moments from your footage, writes narration that reacts to what is visible, voices it with a natural AI voice, and mixes it over your original audio. You choose the tone, documentary, funny, dramatic, or engaging, to match your channel.
It is the fastest way to add commentary to a video without being on camera or behind a mic. Creators use it to turn sports highlights, gameplay, movie scenes, and found footage into narrated clips for TikTok, YouTube Shorts, and Instagram Reels, then fine-tune everything in the editor.
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Add commentary to any video on autopilot
Upload a clip once and let AI handle the watching, writing, voicing, and captions so you can post every day.
AI watches, then narrates
The AI sees your footage and comments on the actual moments, not a generic script read over the top.
Post-ready in minutes
Voices, captions, and original-audio mixing are all done for you, ready for TikTok, Shorts, and Reels.
Frequently Asked Questions
What is an AI video commentator?
It is a tool that uses AI to watch your video, understand what is happening in each scene, and automatically generate spoken commentary. It voices the narration with AI text-to-speech and mixes it with your original audio to produce a fully narrated video.
How does the AI understand what is happening in my video?
The AI uses an advanced video-understanding model to watch your footage and identify the objects, actions, people, and context in each moment, then writes commentary that accurately describes and reacts to the on-screen events.
What voice options are available?
You can choose from a range of natural-sounding AI voices with different genders, tones, and styles. Preview each voice before you generate and pick the one that best fits your content.
What are the four commentary tones?
Documentary (serious and factual), Funny (witty, reaction-style humor), Dramatic (intense and suspenseful), and Engaging (energetic and upbeat). The tone shapes how the AI writes and delivers every line.
Does the AI keep my original video audio?
Yes. The commentary is mixed over your original audio at a balanced level, and you can set how loud the original plays underneath the narration, so background sound and music are preserved.
Can I edit the commentary before the final video?
Yes. Every generated video opens in the StoryShort editor, where you can tweak the narration text, captions, timing, voice, and media, then re-render.
How long does it take to add commentary to a video?
Most clips are ready in a few minutes. It runs in the background, so you can leave the page and you will be notified as soon as it is done.
Which aspect ratios can I export?
You can export 9:16 for TikTok, YouTube Shorts, and Instagram Reels, 1:1 for feeds, or 16:9 for YouTube. The default is 9:16 vertical.
Is it free to try?
You can start for free with no credit card. Generating a fully narrated commentary video uses credits, which you get on a subscription plan.