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High-quality subtitle delivery requires far more than accurate transcription. Captions/Subtitles must comply with strict technical, linguistic, and platform-specific standards—covering reading speed, line length, avoiding burnt-in text overlap, timing accuracy, punctuation, speaker and regional guidelines.
Traditionally, these checks are performed manually, making caption and subtitle QC slow, inconsistent, and difficult to scale across large content volumes and multiple vendors.
CapMate, our cloud-native caption/subtitle quality control software, addresses this challenge by utilizing AI- powered automation.
CapMate evaluates subtitle files against many technical rules, automatically detecting issues such as timing and sync mismatches, burnt-in text overlaps, reading speed violations, incorrect segmentation, formatting errors, and platform non-compliance—significantly reducing manual QC effort and rework.
Built on this strong QC foundation, CapMate also supports AI-based subtitle creation, with QC intelligence applied during generation to help prevent common compliance issues from appearing in the first place.
Whether subtitles are created manually, generated using AI, or sourced from external vendors, CapMate ensures consistent, broadcast-ready quality—making automated QC, the backbone of every subtitling and captioning workflow.
Overview
High-quality subtitle delivery requires far more than accurate transcription. Captions/Subtitles must comply with strict technical, linguistic, and platform-specific standards—covering reading speed, line length, avoiding burnt-in text overlap, timing accuracy, punctuation, speaker and regional guidelines.
Traditionally, these checks are performed manually, making caption and subtitle QC slow, inconsistent, and difficult to scale across large content volumes and multiple vendors.
CapMate, our cloud-native caption/subtitle quality control software addresses this challenge by utilizing AI- powered automation.
CapMate evaluates subtitle files against many technical rules, automatically detecting issues such as timing and sync mismatches, burnt-in text overlaps, reading speed violations, incorrect segmentation, formatting errors, and platform non-compliance—significantly reducing manual QC effort and rework.
Built on this strong QC foundation, CapMate also supports AI-based subtitle creation, with QC intelligence applied during generation to help prevent common compliance issues from appearing in the first place.
Whether subtitles are created manually, generated using AI, or sourced from external vendors, CapMate ensures consistent, broadcast-ready quality—making automated QC, the backbone of every subtitling and captioning workflow.
CapMate delivers industry-leading automated subtitle QC, identifying, correcting, and preventing errors that commonly cause delivery rejections, rework, and inconsistent viewer experience.
CapMate’s comprehensive QC engine ensures subtitles comply with industry formats such as SCC, IMSC, TTML, STL, and SRT. It detects and corrects structural issues including invalid timecodes, unsupported characters, and formatting errors, while validating platform-specific requirements for Netflix, Prime Video, Disney+, ViacomCBS, and more.
CapMate automatically detects and corrects subtitle–audio synchronization issues, supporting both homogeneous and industry-first heterogeneous sync across languages. Built-in review and editing tools, along with precise manual adjustment controls, provide complete flexibility for fine-tuning subtitle timing.
CapMate automatically identifies missing subtitle segments and enables quick insertion and correction. It also detects foreign-language dialogue, suggests translations into the subtitle language, and supports creation of accurate forced narrative subtitles for compliant content delivery.
CapMate automatically detects overlaps between subtitles and burnt-in on-screen text, enabling corrective adjustments for clear readability. Subtitles can be repositioned automatically to avoid visual conflicts. CapMate also supports extraction of subtitles from videos containing burnt-in captions.
CapMate detects profanity and abusive language in subtitles, enabling configurable replacements. It also performs English spelling, grammar, and punctuation validation, allowing reviewers to easily accept or reject suggestions before exporting clean, delivery-ready subtitle files.
CapMate generates quality scores for both original and auto-corrected subtitles, along with confidence scores for subtitle–audio sync corrections. These insights help teams quickly prioritize content requiring manual review, improving efficiency across large subtitle volumes.
CapMate provides a powerful browser-based review and editing environment with synchronized audio and video preview. Users can edit subtitle text, timing, and styling, while visual timelines display waveforms, speech events, silence segments, missing subtitles, foreign- language sections, and audio cues.
CapMate enables seamless project sharing for collaborative subtitle review and editing. Teams can work together in real time, share faults with suppliers, and provide clients controlled access for review and approvals—streamlining communication and accelerating delivery cycles.
CapMate’s comprehensive QC engine ensures subtitles comply with industry formats such as SCC, IMSC, TTML, STL, and SRT. It detects and corrects structural issues including invalid timecodes, unsupported characters, and formatting errors, while validating platform-specific requirements for Netflix, Prime Video, Disney+, ViacomCBS, and more.
CapMate automatically detects and corrects subtitle–audio synchronization issues, supporting both homogeneous and industry-first heterogeneous sync across languages. Built-in review and editing tools, along with precise manual adjustment controls, provide complete flexibility for fine-tuning subtitle timing.
CapMate automatically identifies missing subtitle segments and enables quick insertion and correction. It also detects foreign-language dialogue, suggests translations into the subtitle language, and supports creation of accurate forced narrative subtitles for compliant content delivery.
CapMate automatically detects overlaps between subtitles and burnt-in on-screen text, enabling corrective adjustments for clear readability. Subtitles can be repositioned automatically to avoid visual conflicts. CapMate also supports extraction of subtitles from videos containing burnt-in captions.
CapMate detects profanity and abusive language in subtitles, enabling configurable replacements. It also performs English spelling, grammar, and punctuation validation, allowing reviewers to easily accept or reject suggestions before exporting clean, delivery-ready subtitle files.
CapMate generates quality scores for both original and auto-corrected subtitles, along with confidence scores for subtitle–audio sync corrections. These insights help teams quickly prioritize content requiring manual review, improving efficiency across large subtitle volumes.
CapMate provides a powerful browser-based review and editing environment with synchronized audio and video preview. Users can edit subtitle text, timing, and styling, while visual timelines display waveforms, speech events, silence segments, missing subtitles, foreign- language sections, and audio cues.
CapMate enables seamless project sharing for collaborative subtitle review and editing. Teams can work together in real time, share faults with suppliers, and provide clients controlled access for review and approvals—streamlining communication and accelerating delivery cycles.
In addition to automated QC, CapMate offers integrated subtitle creation tools that accelerate turnaround while maintaining quality, consistency, and delivery compliance.
CapMate enables AI-based subtitle generation tightly integrated with its automated QC intelligence. Subtitles are created with built-in validation for timing, segmentation, reading speed, and formatting—helping prevent common compliance issues and reducing downstream QC effort and rework.
CapMate displays key audio events directly on the timeline, enabling users to easily verify and refine generated subtitles. These visual cues support accurate timing, improved segmentation, and informed editing—enhancing subtitle clarity, usability, and delivery readiness.
CapMate enables creation of multilingual subtitles using an integrated AI-based translation engine. Verified primary subtitles can be translated into additional languages, with intelligent alignment to original timing and segmentation—ensuring consistency, readability, and faster global content delivery.
CapMate enables AI-based subtitle generation tightly integrated with its automated QC intelligence. Subtitles are created with built-in validation for timing, segmentation, reading speed, and formatting—helping prevent common compliance issues and reducing downstream QC effort and rework.
CapMate displays key audio events directly on the timeline, enabling users to easily verify and refine generated subtitles. These visual cues support accurate timing, improved segmentation, and informed editing—enhancing subtitle clarity, usability, and delivery readiness.
CapMate enables creation of multilingual subtitles using an integrated AI-based translation engine. Verified primary subtitles can be translated into additional languages, with intelligent alignment to original timing and segmentation—ensuring consistency, readability, and faster global content delivery.
Whether subtitles are ingested from existing files or generated directly within CapMate, everything moves through one unified workflow. Automated QC and correction handle the heavy lifting, flagging and fixing sync, timing, burnt-in overlap, and compliance issues. Anything that needs a closer look can be reviewed and refined in CapMate’s built-in editor, with synchronized audio/video preview and a visual timeline for precise adjustments. Teams collaborate in real time throughout, sharing files with suppliers and routing content to clients for approval, so subtitles move from first draft to delivery-ready without ever leaving CapMate.
Input Formats
Export Formats
Editing Capabilities
Review Capabilities
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Subtitles focus on spoken dialogue (same or translated language) and assume the viewer can hear audio.
Captions include dialogue plus audio cues (speaker, sounds, music) and are designed for deaf or hard-of-hearing viewers.
CapMate detects sync errors, burnt-in text overlaps, missing subtitles and forced narratives, reading speed and line length violations, punctuation errors, conformance violations, etc.
Yes, CapMate automatically pinpoints the exact location and type of issues, allowing users to jump directly to problem areas instead of manually reviewing entire files.
Yes, CapMate® can automatically correct a range of issues, it supports auto-correction for errors related to sync, duration (Min and Max), burnt-in overlaps, caption positioning, punctuation etc.
Yes, CapMate detects and corrects random-sync offset, segment-wise sync offset, and drift sync errors.
Yes, CapMate supports heterogeneous sync correction where subtitle language differs from spoken audio, ideal for dubbed and multilingual content.
Yes, CapMate detects overlaps across the entire frame and auto-corrects overlaps by changing position of subtitles.
Yes, CapMate detects burnt-in subtitles and reports start time, end time, duration, and language, with export available as a CSV file.
Yes, CapMate performs punctuation QC and provides auto-suggestions for supported punctuations.
Yes, it detects cases where subtitle text closely matches burnt-in subtitles in the video and flags redundant subtitles to prevent double-subtitling.
Yes, CapMate detects missing subtitle segments and forced narrative audio events.
Yes. CapMate provides a built-in Editor/Review tool that allows users to review and edit subtitle timing, text, and on-screen position using an interactive timeline for precise and efficient corrections.
Yes. CapMate generates subtitles from MP3, WAV, MOV, or MP4 files, automatically synced with audio and delivered as QC-validated, auto-corrected files.
Generated subtitles automatically undergo QC for readability, speed, line length, burnt-in overlaps, and conformance before delivery.
CQS is a weighted score based on QC violations that reflects the overall quality of original and auto-corrected subtitle files.
CapMate supports SCC, TTML, SRT, DFXP, SMPTE-TT, IMSC, EBU-STL, WebVTT, iTT, and PAC formats.
Supported formats include MP4 (H.264/AAC), audio-only MP4, WAV, MP3, and MOV.
No. CapMate is a cloud-based SaaS platform accessible via a web browser or REST APIs.
Yes. CapMate is available for trial so users can evaluate its subtitle and caption QC capabilities before subscribing.
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