Split-Screen: Auto-Untertitel „Hallo Nackte von Smartphones hier.“ versus Profi-Untertitel „Hallo, Magda von smartspokes hier.
Automatic subtitles sound convenient, but they contain up to 15% errors. In our 45-second split screen, you can see how automatic captions distort names and numbers—and how verified subtitles become BFSG-compliant.

Why Automatic Subtitles Double Your Risk

(How Incorrect Captions Jeopardize Comprehension, Your Brand, and BFSG Compliance)

1 | What's It All About in 45 Seconds?

In just three seconds, “Magda von Smartspokes” suddenly becomes “Nackte von smartphones”. It sounds funny, but it costs trust and, in the worst case, BFSG compliance. Our 45-second split-screen video proves it.

In the clip, you can see automatic Adobe subtitles on the left and checked subtitles from smartspokes on the right – perfect for direct comparison.

2 | Why Automatic Captioning Often Fails 📉

Error type

Example

Risk

Word error rate (10–15 %)

smartspokes → Smartphones

Incorrect branding

Incorrect numbers

2023 → 2022

Incorrect information, compliance risk

Truncated lines

Accessibility Act

−10 % comprehension

According to recent scientific research, even modern ASR tools achieve an error rate of 8.8–10.5% when recognizing doctor-patient dialogues.1 Eye-tracking studies show that even a few errors in combination with unfavorable text segmentation significantly increase cognitive load. This is because errors disrupt reading flow and poor text segmentation forces the reader to expend more effort to understand the text, which is reflected in longer fixation times and more frequent regressions of eye movements. All key figures and sources can be found in detail in the first part of our series. ¹ Automatic speech recognition performance for digital scribes, PMC, 2023. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10593630/

3 | What Makes Professional Subtitles Better ✔️

3.1 Semantic Segmentation

Lines divided into meaningful units ≠ rigid 42-character cut → +15% text comprehension.

3.2 Manual QA

Names, technical terms, and numbers checked by humans → error rate < 2%.

3.3 BFSG-Ready Formats

Delivery as SRT, VTT, EBU STL – including speaker tags and according to the desired style guide.

4 | Studies Show: Subtitles Have a Measurable Impact

Subtitles measurably increase viewing and completion rates – this has been demonstrated by large, published studies. This publicly available data confirms what we observe every day in customer projects: accurate, semantically segmented subtitles significantly increase attention and completion rates.

Study / Platform Key Finding Source
Facebook Tests (2016) Captioned video ads increased average view time by 12%. (facebook.com)
PLY Media Study (2019)Only 66% of users watched videos without subtitles until the end – with subtitles 91% watched until the end(newtontech.net)

5 | YouTube Auto-UT – Unfortunately Not a Solution Either

Screenshot Untertitel-Vergleich in Word: Auto-UT vs. Profi-UT nebeneinander dargestellt

Screenshot 1: YouTube recognizes “Magda von smartspokes” as “Magmartworks.”

Screenshot 2: The proverb is completely mangled. “das gelbe vom Ei” becomes “dasselbe vom Ei.”  

Conclusion: Whether Adobe or YouTube – the average error rate remains at 10–15%. This is not sufficient for the legally required “clear and understandable communication” (§ BFSG).

6 | FAQ – Quick Answers

Are Automatic YouTube Subtitles BFSG-Compliant?

Usually not. Error rate > 10%, BFSG requires “clear and understandable.”

24–48 hours for clips < 30 minutes

Yes – Subtitle Edit is very well suited for simple formats such as SRT or VTT. You can use it to insert time codes, line breaks, and even simple speaker tags. For complex styles or accessibility requirements (e.g., fixed positioning, colors, synchronization with VoiceOver), we recommend that you have us proofread your subtitles. We would be happy to take a look at your file and let you know what needs to be done.

TL;DR – Too Long; Didn't Read

Automatic subtitles are practical – but prone to errors.
They confuse names and numbers and split sentences in illogical places. Studies show:
➡️ +10–15% loss of comprehension due to poor segmentation.
➡️ +12–20% watch time with professionally checked subtitles.

Our split-screen video shows the difference.
And unfortunately, YouTube is no exception – there, “Magda von smartspokes” suddenly became “Nackte von Smartphones” (Naked people from Smartphones).

BFSG is committed to comprehensibility.
We deliver checked, semantically segmented subtitles in VTT, SRT & Co. – including positioning & speaker tags.
➡️ Ready in < 48 hours.
➡️ Starting at $10/minute

👉 Learn more about subtitling & transcription here

Want More Tips and Tricks?

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TRANSLATION

“Made in Germany” from Baden-Württemberg stands for quality worldwide, and we are committed to upholding this reputation. A high-quality translation should be easy to read, easy to understand, and indistinguishable from an original text in the target language. That is our standard.

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