How to add subtitles and a logo to a video
Upload the video to Vizard Agent and ask for subtitles and your logo. Vizard Agent transcribes the speech with word-level timing, writes it with real punctuation rather than a stream of words, and burns the captions in at the style and position you asked for, with the logo placed where you put it.
What do you type into Vizard Agent?
Asking for correct punctuation by name is the highest-value clause in this prompt. It is the difference between subtitles and a word stream, and it is the thing people forget to ask for. Everything else is placement, which Vizard Agent decides against your real frames rather than a fixed offset. Upload the logo, or just name the brand.
Prompt
What does Vizard Agent actually do?
The captioning half runs off a word-level transcript, as you'd expect. The logo half is the part people don't expect: if the brand is public, Vizard Agent goes and finds the asset instead of waiting for you to supply it. Then it places both against your real frames, so it knows what sits under the text. In the session behind this article it:
- Inspected the video and looked at what else was in the workspace.
- Extracted sample frames across the video and viewed them as a contact sheet, to see the picture where the captions would sit.
- Transcribed with word-level timing, then read the full word-level data rather than a paragraph version of it.
- Searched the web for the brand's logo and fetched the company's own pages to find a clean copy.
- Placed the captions and the logo against the frames it had examined, delivering 88.12 seconds of 4K vertical video at 2160x3840 and the source's 25fps, with the audio preserved.
When does this not work well?
Captioning fails at two edges: unusual words, and frames with nowhere safe to put text. A transcript will guess at a surname or a drug name, so write the spelling in the prompt. Sometimes no position avoids covering something, so say what must stay visible. A logo found online may not be your current one, and burned-in captions can't be switched off later.
Common questions
Can I get a subtitle file instead of burned-in captions? Yes. Ask Vizard Agent for the file, or for both.
Will it caption in another language? Yes. Tell Vizard Agent which, and whether you want the original language as well.
What if a word is transcribed wrong? Give the correct spelling. Vizard Agent re-renders the captions from the same transcript rather than re-transcribing.