AI‑Powered Subtitling with Auto‑Timing

Checksub automatically transcribes spoken content and syncs subtitle blocks to audio waveforms, drastically cutting the hours spent on manual time‑coding. The engine supports 150+ languages and can handle multiple speakers in a single file.

Business outcome: Reduces subtitle production time by up to 70 % compared to manual entry, enabling teams to publish faster.

Built‑In Multi‑Language Translation Engine

Instead of copying text into external translation tools, teams can translate subtitles directly inside Checksub’s editor while maintaining frame‑accurate timestamps. The translation layer covers over 150 languages and allows side‑by‑side editing of source and target languages.

Business outcome: Eliminates the duplicate work of re‑syncing translations; a marketing team can localise a 2‑minute video into 6 languages in a single session.

AI Dubbing with Synthetic Voice Synthesis

Checksub generates machine‑voice dubbing directly from translated subtitles, offering a range of synthetic voices across genders and languages. While lip‑sync is not perfected, the feature is fast enough for internal videos and social media content.

Business outcome: Provides an affordable voice‑over option for teams that otherwise would skip dubbing due to time or budget constraints.

Collaborative Correction Editor

The in‑browser editor lets team members review and adjust machine‑generated subtitles, translations and dubbing scripts together. Comments, track changes, and version history keep feedback loops inside the platform.

Business outcome: Cuts review cycles by centralising feedback, so a localization team can approve a video in hours instead of days across email and spreadsheets.

Credit‑Based Consumption with Flexible Plans

Checksub uses a credit system tied to video length and the AI services applied (subtitling, translation, dubbing). Teams start with a free trial and can scale credits up or down monthly, avoiding large upfront commitments for occasional localization spikes.

Business outcome: Matches costs directly to usage, making it viable for both small startups testing international content and growth‑stage companies with regular multilingual pipelines.

Wide Format Support for Post‑Production

Subtitles can be exported in SRT, VTT, and other standard formats, while dubbed audio tracks are downloadable as separate files. This lets editors slot Checksub outputs directly into professional post‑production tools like Premiere Pro or DaVinci Resolve.

Business outcome: Maintains compatibility with existing video workflows, so video editors don’t need to abandon their preferred editing suite.

• Unified subtitling, translation and dubbingChecksub is one of the few platforms where a team can handle all three localization tasks without exporting files between tools.
• Collaborative correction editorThe in‑app review and editing environment is genuinely useful for teams that need to polish AI output before publication.
• Very wide language coverageWith 150+ languages, the platform supports niche language pairs that many competitors ignore, which is crucial for global campaigns.
• Pay‑as‑you‑go credit modelThe credit system is transparent and lets businesses experiment with localization without locking into expensive annual contracts.

• AI dubbing quality varies by languageSynthetic voices sound natural in English and a few other major languages, but in less common languages the intonation can be robotic.
• Credits consumed quickly by longer videosA 30‑minute training video multiplied by 4 languages can drain a standard credit pack, making the cost unpredictable for heavy users.
• Human review remains mandatory for professional workThe AI‑generated subtitles and dubbing still need a final human touch to fix timing, nuance, and cultural adaptation—this tool accelerates, but doesn’t replace, human editors.
• Professional RealityIf your use case demands cinema‑grade lip‑sync or zero‑error subtitling out of the box, budget for dedicated post‑production staff—Checksub’s AI output alone won’t deliver broadcast‑ready results.

Global social media campaign localization

A marketing team shoots one hero video, then uses Checksub to auto‑generate subtitles in 4 languages, translate them, and add machine‑voice dubbing—all within a morning. The integrated editor lets a bilingual reviewer approve everything before the video goes live.

Rapid e‑learning module translation

An instructional designer uploads a 10‑minute English course video, generates French and Spanish subtitles and AI voice‑over tracks, then shares the project with a subject‑matter expert for final sign‑off directly inside Checksub.

Media agency offering low‑cost multilingual dubbing

A production house adds a budget‑friendly dubbing option to its client menu by using Checksub for AI‑generated voice tracks. Human sound engineers then polish the output for an offering that undercuts traditional dubbing studios.

Internal corporate communications in multiple languages

An internal comms team localizes a CEO town‑hall recording into the company’s six operating languages. Checksub’s shared editor lets regional managers review translations and voice‑overs simultaneously, cutting the turnaround from a week to under two days.

Sign up for a free Checksub account to receive trial credits and explore the interface.

Upload a short video (under 2 minutes) to test the automatic subtitling engine and check timing accuracy.

In the correction editor, adjust any timing errors or mistranscriptions, then apply AI translation to see how it handles your content.

Generate an AI dubbing track for one language, review the voice quality, and export both the subtitle file and audio to integrate into your existing video production workflow.