Caption styles
Black Background Subtitles
Subtitles with a black background stay readable over anything: snow, a white wall, a bright sky, a busy street. CapsAI has three caption styles that set the words on boxes, and it writes the captions from the speech in your video, so there is no subtitle file to make first. Newsroom (free) puts white capitals on near-black boxes and turns the word being spoken yellow. Tommy Soft (free) puts cream text on rounded, semi-transparent dark pills, with a green spoken word. Labels (Pro) puts phrases on colored label boxes, only one of them black. Upload a video, fix any word, pick a boxed style and export an MP4 with the captions burned in. Box color and opacity are fixed, and no style gives plain white sentence-case text on one continuous black bar; this page says what to use instead.
Start with 3 free minutes. Watermark-free export comes with every paid pack.
Upload Video
For best results, upload a video with clear speech. You can review and edit the captions after generation.
Drag and drop video or
MP4 or MOV, any aspect ratio.
English subtitle example: This is a preview of the subtitle design Please transcribe to get your video
What the captions look like
Newsroom over a bright sky
The ferry leaves at six, not seven.
White Europa Grotesk capitals, each word on its own near-black box with barely rounded corners. The spoken word turns yellow, and the sky behind stops mattering.
Tommy Soft on a vlog line
Okay, this cafe was worth the wait.
Tommy Soft keeps the case as transcribed, so it reads like ordinary text: cream letters on rounded dark pills that let a little of the picture through, with the spoken word in green.
Labels for a title moment
Three rules for renting abroad
Labels spreads a caption over up to four label boxes, purple, cyan, a tilted magenta box and a tilted black one, wiped in from the left. It reads as a graphic, not a subtitle.
Interview against a white wall
We never planned to open a second shop.
Outlined text can blur into a pale wall on a phone. A box brings its own contrast to every shot.
What you get
- Two boxed styles that are free to export: Newsroom and Tommy Soft
- Readable over white, bright or busy footage without relying on an outline
- Captions written from the speech, so there is no subtitle file to prepare
- Box and text burned into the video, identical on every phone and player
- A spoken-word highlight inside the box: yellow in Newsroom, green in Tommy Soft
Where it helps
- Travel and outdoor clips shot against sky, sand or snow
- Interviews and talks filmed in front of white walls or slides
- News-style explainers and updates that suit a lower-third look
- Vlogs and voiceovers where text has to read over constantly changing shots
How it works
How it works
Step 1
Upload the video, not a subtitle file
CapsAI makes captions from the speech in an MP4 or MOV of up to 10 minutes. It cannot import an SRT. 3 free minutes to start; files up to 500 MB, or 10 GB with a pack.
Step 2
Choose the spoken language and check the draft
Eleven languages, no translation. Fix names and numbers before styling, because a boxed caption puts every word in plain view.
Step 3
Pick a boxed style
Newsroom or Tommy Soft to export free, Labels with any pack from $4 (₹49 in India, €4 in the euro area). Preview all three on your own video first.
Step 4
Set words per frame and height
Fewer words per frame means shorter rows of boxes and less of the picture covered. Place the captions between the middle of the frame and near the bottom (50 to 90%).
Step 5
Export the MP4
The boxes are burned into the picture, so they show on every player and platform, and no viewer setting turns them off.
Choose your spoken language
What to do next
Related tools
Questions
How do I add subtitles with a black background to a video?
Upload the video, choose the spoken language, correct the draft, pick Newsroom or Tommy Soft and export. Both are free to export; exports on the 3 free minutes carry a CapsAI watermark, and watermark-free export comes with every paid pack.
Can I change the box color or opacity?
No. Newsroom's box is near-black and solid, Tommy Soft's is dark and semi-transparent, and Labels uses its own set of colors. The editor's color swatches work on seven other styles, not these three, and there is no outline editing.
Can I get plain white sentence-case text on a black bar?
Not exactly. Newsroom is always capitals, Tommy Soft uses cream text with a green spoken word, and each word sits on its own box rather than one bar behind the line. For the classic TV look, Kapwing's Black Box Subtitles template, read on 19 October 2026, uses white Arial on a semi-transparent black box.
How do I remove the black background behind subtitles?
For a player's own captions, the viewer controls the box. On YouTube, open Settings, Subtitles/CC, Options to change background and window color and opacity; on iPhone, go to Settings, Accessibility, Subtitles & Captioning, Style (both read 19 October 2026). A box burned into the video cannot be removed by any setting.
Why do Netflix subtitles have a black background?
Netflix lets each profile change subtitle font, size, shadow and background color under Subtitle appearance (Netflix Help Center, read 19 October 2026), so check that page and your device's caption settings. For a box inside your own video, Newsroom is the closest style.
Which boxed styles are free?
Newsroom and Tommy Soft are among CapsAI's eight free styles. Labels is one of the 29 Pro styles: preview it on your video free, and any pack, including Starter at 20 minutes from $4, lets you export it.
I already have an SRT file. Can CapsAI put it on a black box?
No. CapsAI does not import subtitle files; it captions the speech in the video. To burn an existing SRT, use a desktop tool such as HandBrake, VLC or FFmpeg; our guide to those three covers the settings.
Can I put boxed captions at the top of the frame?
Not in the web editor. Captions sit anywhere from the middle of the frame (50% of its height) to near the bottom (90%), which suits the lower-third look Newsroom is built for.
Can I download the captions as SRT or VTT?
No. The output is one MP4 with the boxed captions burned in. For files you already have, this site's SRT and VTT converters run in the browser.
How long does it take?
A few minutes for a clip under a minute: upload, transcription, then the export render. Captioning works in 11 spoken languages, English first. CapsAI's English has been used most on Indian English; for other accents, test a clip on the 3 free minutes.
What each boxed style looks like
Newsroom is built like a news lower third. The font is Europa Grotesk Medium in capitals, every word sits on its own near-black box with barely rounded corners, and the spoken word turns yellow while the rest stay white. Each word nudges up as it is spoken.
Tommy Soft uses Made Tommy Soft Black and keeps the case the transcript has. Each word sits on a rounded pill of semi-transparent black, so some of the picture shows through, the text is cream rather than pure white, and the spoken word turns green with a small pop. Labels, a Pro style, is a graphic rather than a subtitle: a caption is split across up to four label boxes (purple with white text, cyan with black text, magenta tilted one way with yellow text, black tilted the other way with white text), each wiped in from the left.
When a box beats an outline
An outline works when the background changes slowly and sits in the mid-tones. It struggles on white walls, overcast skies, snow, bright screens and footage full of small detail, where the edge of each letter competes with everything behind it. A box replaces what is behind each word with a known dark color, so contrast stops depending on the shot.
The cost is coverage: a box hides more of the picture than outlined text. Keep lines short with 2 or 3 words per frame, keep captions in the lower part of the frame, and choose Tommy Soft when you want the picture to show through a little. On dark, plain footage an outlined free style such as Poppins Italic may suit better.
Player backgrounds versus burned-in boxes
Most questions about black subtitle backgrounds are about players. YouTube's caption options let viewers set background and window color and opacity, iPhone's Subtitles & Captioning style settings include background color and opacity, and Netflix profiles have a Subtitle appearance page with a background color setting (all read 19 October 2026). Those boxes belong to the viewer and exist only where captions are a separate track.
Burned-in boxes belong to the video. They look the same in every app, cannot be switched off and survive reposting. The flip side is that a viewer who dislikes the box cannot remove it, so preview the style at phone size and keep your original file in case you need a clean version.
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