Add Czech Subtitles to a Video

Subtitles are the way to Czech here

mydubly can transcribe Czech, translate into Czech and subtitle in Czech, but its dubbing voices cover 19 of its 21 languages and Czech isn't among them. So if you have an English, German or Polish video for a Czech audience, a Czech subtitle track is the localisation you can make here, and a well-made one is what a lot of Czech viewers watching online video are used to anyway. The Czech video translator page covers translation more broadly; this page is about getting those Czech lines onto the picture and getting them right.

The letters that must come through

Czech uses the háček (č, ď, ě, ň, ř, š, ť, ž), the čárka for long vowels (á, é, í, ó, ú, ý) and the kroužek on ů. Each one changes the word: "byt" is a flat, "být" is "to be". The editor draws them all, but two situations deserve a look in the preview:

• Capitals with marks. Ř, Č and Š carry their háček above the cap height. With UPPERCASE switched on and a tight line height, those marks can crowd the line above. Raise the line height slightly if they do.
• Imported files. Older Czech subtitle files are often saved in Windows-1250, and the editor reads subtitle files as UTF-8. If ř or ů come in as stray symbols, open the file in a text editor, save it as UTF-8, and import again.

Exports from the editor are UTF-8, so the SRT or VTT you download keeps every mark.

How to add Czech subtitles to a video

1. Open the editor on this page and choose the video from your computer.
2. For Czech speech, keep "Subtitle language" on auto-detect or choose Czech. For speech in another supported language, choose Czech to have it translated.
3. Click AI subtitles. Only the audio is uploaded; the picture stays on your device. A 15-minute video costs 15 credits (1.5¢).
4. Play it through and correct each line in the list. Click a line to jump there; use Shift with the arrow keys to step by a tenth of a second when checking a start.
5. Choose a preset and font in Style, place the subtitles, then click Render video and Download video.
6. Export SRT or VTT if you also need a separate Czech track for YouTube or a course platform.

If you have no audio to work from, or a translator has already delivered the text, switch AI off and import their file or type the lines yourself.

Proofreading machine Czech

Czech grammar gives a machine many chances to be almost right. Read every line for these:

• Cases on names. Czech declines names: "s Petrem", "Janě", "od Nováka". Foreign names and brands get declined too, and the translation may do it inconsistently. Choose a form and keep it.
• mě or mně, bili or byli. These are the classic spelling traps, and recognition sometimes picks the wrong one because they sound alike.
• Vykání or tykání. English "you" has to become formal "vy" or informal "ty". Business and training videos usually want vykání, creators often tykání. Check that the translation doesn't switch midway.
• Numbers and money. Czech writes 2,5 with a decimal comma, 10 000 with a space, and prices in Kč after the number.
• English vocabulary. Tech terms often stay English in spoken Czech; decide whether to keep or translate them and be consistent.

A proofreading routine for AI transcripts is useful here even though the output is subtitles.

Keeping Czech readable

Czech has no articles but long inflected words, and a translation from English doesn't necessarily come out shorter. The editor flags any subtitle needing more than 21 characters per second and any line over 42 characters. When a translated line is too dense, shorten it rather than speeding it up: drop repeated subjects, prefer a short verb to a noun phrase, cut "vlastně" and similar fillers. Lines that cover two ideas can be cut in two with Split at the playhead, and two tiny ones can be joined with Merge; split and merge shows both. If a whole translated file runs late, adjusting subtitle timing covers the fixes.

Three typical jobs

Where Czech subtitles go next

The burned-in MP4 works on social feeds, in messengers and in presentations, where tracks are often ignored. For YouTube, upload the exported SRT as well so the platform can index it. If you only need the Czech subtitle file and no video, the subtitle generator is quicker.

About the subtitle editor on this page

Opens

MP4, MOV, M4V, WebM, MKV videos your browser can decode

Subtitles from

AI (from the speech, optionally translated into one of 21 languages), an SRT or VTT file, or typing them in

You download

An MP4 with the subtitles drawn into the picture at the original resolution and frame rate, plus SRT and VTT files

Cost

Editing, styling, rendering and SRT/VTT export are free, with no account and no watermark. AI subtitles cost 1 credit per minute (5-credit minimum per video); signing in with Google gives 100 free credits and accounts get 10 free credits a day

Privacy

The video never leaves your device and is rendered in your browser. Only for AI subtitles is the audio sent, over HTTPS, and it is deleted within 30 minutes of delivery

Rendering needs

Chrome or Edge 94+, Safari 16.4+, or Firefox 130+ on a computer. Editing and SRT/VTT export work in any current browser