Subtitle Reading Speed: How Long Should a Subtitle Be?
Subtitle reading speed is measured in characters per second. Common limits are about 17-20 CPS, 42 characters per line and two lines per subtitle. Here's how to apply them.
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Subtitles
Guides, comparisons and how-tos for AI video, AI presenters, UGC-style ads, captions and translation.
How to Add Subtitles to an MP4 Permanently
To add subtitles to an MP4 permanently, burn them into the picture. Here's how with HandBrake on Windows or Mac, FFmpeg, or an online tool, and how to add switchable subtitles instead.
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How to Add Subtitles in Multiple Languages
To add subtitles in several languages to one video, add one subtitle track per language where the player supports it, or make one burned-in copy per language for social feeds.
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How to Add Arabic Subtitles to a Video
Arabic subtitles need right-to-left text, connected letters and the right font. Here's how to make them, fix punctuation that jumps to the wrong end, and upload or burn them in.
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How to Add Bengali (Bangla) Subtitles to a Video
To add Bengali subtitles, transcribe Bangla speech or translate existing subtitles into Bengali, save a UTF-8 SRT, then upload it or burn it in with a font that renders Bengali correctly.
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How to Translate a Video to English With AI
Turn a video in Spanish, Hindi, Arabic or another language into English with AI: subtitles in minutes, or an English dub that keeps the speaker's voice.
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How to Add Hindi Subtitles to a Video
How to add Hindi subtitles to a video: transcribe Hindi speech or translate existing subtitles, decide on Devanagari or Hinglish, fix fonts and encoding, then upload or burn them in.
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