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Why don't subtitles match dubbing?

60 videos recommended on HN
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Cited on HN 4 times, 2024–2025, never outright recommended score 0
Years with an HN recommendation, 2007–2026

Cited in subtitle threads for its explanation of why subtitles are condensed and adapted rather than literal.

Tom Scott explains why subtitles often differ from dubbed dialogue, covering how translation, timing and reading speed shape each. It features translators and voice talent working in several languages.

“Tom Scott's video on subtitling talks about this historical practice and how it is different today” (HN, 2025)

4 citations · Explainers

4 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@alister Jan 2024 Cites it
on HN thread Tom Scott: After ten years, it's time to stop making videos [video]
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> Unless the difference actually contains significantly different meaning and can lead to misunderstanding, I don't see why that'd an issue The following are some of the reasons why it's very desirable that audio and subtitles should match: (1) It's great when you're trying to learn a language or to watch in a language in which you're not fluent. It's extremely frustrating when the audio and subtitles don't match. This point is made by many people in the comments to the video[1]. (2) Even if you're fluent in the language, if you're watching with both audio and subtitles enabled, it's jarring when they don't match. (3) If you didn't understand something in the audio (because of poor pronunciation, poor sound quality, or whatever), and you turn on subtitles to see what was said, you expect to see exactly what was said, not something "similar in meaning". (4) A reason quoted directly from the YouTube comments[1] (which I think is a more common a problem that people realize): As someone with sensory processing issues but technically normal hearing - sometimes understanding what i'm hearing comes with a short delay, and accurate subtitles help bridge that gap so I can still keep pace with what i'm watching! If the subtitles don't match, however, it can COMPLETELY throw me off because of the conflict in information and I end up more confused than if i'd only read the subtitles or only listened to the audio. Accurate subtitles are an accessibility feature! > phrases that are commonl
Comments on the video cited for why accurate subtitles matter.
@cyphar Oct 2025 Cites it
on HN thread Why did Crunchyroll's subtitles just get worse?
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I agree there appears to be very little interest in subtitles in Japan from most Japanese people, but it is absolutely not true that Japanese subtitles are as haphazard as you say. The overwhelming majority of official Japanese subtitles I have seen (having studied Japanese for more than 5 years now) are not only word-accurate transcriptions, but also include transcriptions of noises (like あああああ for screams) as well as SDH-like notations for sound effects. Most include furigana for new/uncommon words as well. This has been the case for all anime, dramas, and movies I have watched with subtitles for the past 5 years (too many hours to count). Funnily enough, the complaints you have here actually apply more to English subtitles in my experience. Modern English subtitles tend to accurately transcribe what was said, but if you look at official subtitles from the mid-2000s and earlier you'll see that most subtitles are made much shorter than the original text. Tom Scott's video on subtitling talks about this historical practice and how it is different today[1]. Are you sure that the subtitle services you used are actually using official subtitles, and that they aren't actually translations or from some other source? How old are the shows you're watching (I believe some movies from the 70s I watched were character-accurate but that might not have been as common in the past)? [1]: [this video]
Covers historical practice of shortened subtitles versus today.

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