Rev Accuracy Analysis

We submitted files to Rev in order to measure their true accuracy and provide empirical evidence of their product quality.

Read on for the results.
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We submitted 8 files with good quality audio, of varied subject matters, and with a duration of 5+ minutes to Rev.

What We Measured

  • Spelling and Grammatical Errors
    Since punctuation errors are subjective, we measured accuracy for both including and excluding punctuation and case.
  • Word Error Rate (WER)
    The WER measures the number of substitutions, deletions, and insertions, divided by the number of words in the reference.
  • Order & Delivery Process
    We measured the time elapsed from ordering to order confirmation and time elapsed from order received to delivery.
  • Revision and Support Experience
    We also measured the time elapsed for editing and correcting the returned transcripts from Verbit.

Rev's average accuracy rate for the 8 files submitted ranged between 84.7% to 94.4% accuracy.

The industry standard for caption quality is a 99% accuracy rate. This means that there is a 1% chance of error or leniency of 15 errors total per 1,500 words.

The FCC, DCMP, and WCAG have all set captioning quality standards to ensure captions are comprehensible. Failure to uphold these standards could affect your brand, messaging, or result in a costly lawsuit.

For more information on caption quality, read Best Practice for Caption Quality.

Here's a comparison of the files we submitted alongside their accuracy rate.

Rev’s average accuracy rate including punctuation for the 8 files submitted: 84.7%

Even when we omit punctuation, Rev’s accuracy falls short of 99%, and the average accuracy rate for the 8 files comes to: 94.4%

*Why include or omit punctuation? Punctuation errors can be subjective, so we measured both cases.

At 3Play Media, our accuracy rate is measured including punctuation.

Common Errors

Throughout files, we saw errors such as extra and incorrect words inserted into sections with no dialogue, false starts, misplaced commas, and spelling errors.

Incorrect Words

Rev’s Errors:

  • Incorrect words
  • Extra words
  • Missed words
  • False starts

Why This Matters:

  • Incorrect wording creates confusion for the reader
  • Impacts reading comprehension and retention


Rev’s Errors:

  • Use of nonexistent words
  • Incorrect spelling of names and titles
  • Incorrect tense usage

Why This Matters:

  • Affects your branding
  • Affects the meaning of the content
  • Spelling errors distract the reader


Rev’s Errors:

  • Missing commas
  • Missing apostrophes
  • Missing hyphens
  • Incorrect capitalization

Why punctuation matters:

  • Affects meaning of the content
  • Affects reading comprehension

Missing Speaker Identifications

Rev’s Errors:

  • Missing speaker identifications

Why punctuation matters:

  • Helps distinguish speaker
  • Important when there are multiple speakers

Why Are There Errors?

Rev’s transcription process largely contributes to the inconsistencies and errors found within each file.

  1. Each individual file that comes through is cut up into smaller segments.
  2. These segments are then distributed across a pool of transcribers.
  3. Once the transcription is complete, Rev pieces back together the original file.

Note: There is no quality assurance process. The Final file is never reviewed before being sent back to the customer.

As a result of Rev’s process the customer must spend more time and money reviewing and fixing the inconsistencies of the final file.

Order Details

Time from Order Made to Order Received:
13 minutes

Average Caption File Turnaround Per Video:
2 hours, 35 minutes

Delays in Publishing:
File’s unsatisfactory accuracy rate of 85-94% required additional editing time and a futile support conversation.

The Support Experience

We submitted a ticket to Rev Support regarding the high number of errors of one of the files submitted.

The key takeaway:

Rev does not measure their 99% accuracy using real data, nor can they point to actual metrics to validate this claim.

Rev did not offer to reprocess the file.

The issue was never resolved.

The Bottom Line on Quality

Rev demonstrates quick turnarounds and low-cost rates. However, based on our findings, Rev does not demonstrate, nor can they guarantee 99% accuracy.

Rev’s process and lack of QA lead to inconsistencies throughout a single file. As a result, quality is sacrificed for quicker turnarounds.

Don’t Let Inaccurate Captions Hurt Your Content

3Play Media guarantees a 99% accuracy rate for every file.

(In fact, we have a measured accuracy rate of 99.6%!)

Get Started with 3Play Media