How to add captions to a conference or keynote talk clip on iPhone

Why caption talk clips

A short clip of a keynote, panel or event talk is a common way to share what you heard, but audio filmed from the audience is often echoey and quiet. Captions let people follow the key point in a feed with the sound off, and they help viewers who are deaf or hard of hearing.

This guide is for short clips filmed from the audience and shared on social feeds. For full recordings of classes, lectures and sermons, see the lecture and sermon guide. CaptionAddr burns the captions into the picture, so they show wherever you post.

Caption a conference talk clip on iPhone

1. Film as close as you can. Sit near the front or near a speaker that carries the sound system, keep the phone steady and avoid talking while you record. Follow the event’s rules on recording and sharing talks.
2. Trim the moment. In Photos, cut the clip to the point you want to share; a short highlight is easier to check and can stay within the free 2-minute limit.
3. Choose the video. Tap Select Video in CaptionAddr and pick the clip with Apple’s Photos picker. Vertical, square and landscape videos all work, and the video keeps its shape.
4. Let the captions generate. Captions start as soon as the video opens; keep the app open; the English speech is transcribed on your iPhone, not on a server.
5. Correct names and terms. In Edit Captions, fix product and company names, technical terms, acronyms and numbers, and any words that echo or applause turned into the wrong ones. You can edit, delete and reorder words, with undo and redo.
6. Style and place the captions. Choose one of the 20 fonts and a size that reads on a phone, turn on the tinted background over bright stage lights or slides, and drag the captions where they don’t cover the speaker or the screen.
7. Export and post. Tap Export Video to save the captioned copy to Photos, then upload it to LinkedIn, Reels, TikTok or any other app. The watermark is off unless you turn it on.

Tips for talk clips from the audience

• Distance and echo matter most. A phone far from the stage in a large hall records reverb and crowd noise along with the voice, which causes missed or wrong words. The closer you are, the fewer corrections you’ll make.
• Check questions from the floor. Audience questions without a microphone are often too quiet to transcribe, so check those parts or trim them out.
• Keep the speaker’s words. Fix only transcription mistakes, so the captions match what was actually said.
• Use clear audio if it’s offered. If the event shares an official recording, captioning that gives cleaner results than a clip from your seat.
• Keep your original. CaptionAddr exports a new copy and leaves the original clip in your library.

Limits

• No noise or echo removal. CaptionAddr doesn’t clean up room echo, applause or crowd noise or change the audio, so distant clips may need more corrections.
• English only. CaptionAddr transcribes English speech and doesn’t translate, so it can’t caption a talk in another language.
• Captions only. The app doesn’t add speaker names, session titles, logos or slides, it doesn’t read text on the screen, and you can only fix, delete or reorder the transcribed words.
• Single-word captions. Words appear one at a time, timed automatically, always in uppercase; there are no speaker labels or manual per-word timing.
• Length. Free covers videos up to 2 minutes; CaptionAddr Pro covers up to 30 minutes, so a full session may need to be split. The App Store shows the current Pro price in your currency.
• Burned-in captions only. There is no SRT, VTT or text export, and the app doesn’t post to social platforms.

Frequently asked questions

Related guides

• How to add captions to lecture and sermon videos on iPhone
• How to add captions to a LinkedIn video on iPhone
• How to add captions to a wedding toast or event speech on iPhone
• How to add captions to a motivational speech or mindset clip on iPhone

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