Free Pro Video Reference Tools
Browser calculators and reference charts for editors, DITs, colorists and post supervisors: timecode, DCP naming, subtitle limits, delivery specs, offload time, file size and log curves. Each page names the standard or vendor table behind its numbers.
CPL Line-Length Checker
Paste subtitle lines and check each against Netflix, BBC and CJK characters-per-line limits on a visual ruler, with an exact overflow count for every line that's too long.
Use ToolISDCF DCP Name Generator
Build a spec-correct ISDCF DCP composition name field by field — title, content type, aspect, language, territory, audio, resolution, studio, date, facility, standard and package type — with a live, color-coded preview. Free, no upload.
Use ToolLog Curve Comparison Plotter
Overlay ARRI LogC3, LogC4, Sony S-Log3, Panasonic V-Log and RED Log3G10 on one exposure chart from their published formulas, and read every curve's signal at any stop — free, no upload.
Use ToolNetflix CPS Reading-Speed Checker
Check a subtitle event's reading speed (CPS) against Netflix's per-language ceiling — paste the text and timing, see the worked formula and a pass/fail verdict.
Use ToolOffload & Checksum Time Calculator
Estimate how long it really takes to copy a card, verify the checksum and make a second backup. Enter your footage size and source/destination interfaces to see a Gantt chart with the governing bottleneck named on every bar.
Use ToolPlatform Delivery Spec Card
Pick Netflix, Prime Video, Apple TV+, Disney+, YouTube or BBC/DPP and get its delivery spec as one card — codec, loudness, captions, start timecode. Free.
Use ToolPost-Production Schedule Planner
Enter a delivery date and stage durations — walks backward through QC, export, buffer and review rounds to the real edit start date.
Use ToolSMPTE Color Bars Code Value Chart
Rendered SMPTE color bars with every R'G'B', Y'CbCr and code value computed live for your bit depth, range and matrix — click a patch for the exact numbers, free and instant.
Use ToolTimecode Calculator
Add and subtract SMPTE timecodes, convert timecode to frames or real duration, and switch between 23.976, 24, 25, 29.97 drop-frame and 60 fps — free, right in your browser.
Use ToolVideo File Size Calculator
Estimate video file size from a codec preset — ProRes, DNxHR, XAVC or H.264 at your resolution and frame rate — or from any bitrate, or backwards from a target size.
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