ND:Tools — Filmmaker's Toolkit

Frame Rate & Timecode Calculator

Duration conversions, frame counts, timecode math, and drop-frame handling

Source FPS

Target FPS

Duration

Format

Add or subtract timecodes, find duration between two points.

Timecode A

Operation

Timecode B

Frame Rate

Result (Timecode)

In Seconds

In Frames

Common Conversions

24→25: +4.17%

25→24: −4%

24→30: +25%

60→24: 2.5× slow

23.976→29.97: +25%

120→24: 5× slow

File Size & Data Rate Calculator

Professional bitrate calculator with resolution-aware calculations, image sequences, and DCP

Codec Preset

Resolution Preset

Frame Width

Frame Height

Frame Rate (fps)

Video Bitrate Mbps

Audio Bitrate kbps

Duration

Container Format

Container Overhead %

ProRes: 422 Proxy 422 LT 422 422 HQ 4444

H.264/H.265: H.264 1080p H.264 4K H.265 4K H.265 8K

DNxHR: LB (Proxy) SQ HQ HQX 444

Streaming: Netflix HD Netflix 4K Instagram Reel TikTok

Image Sequences: TIFF 16-bit DPX 10-bit EXR ZIP PNG-24 JPEG Q90

RAW/DCP: Blackmagic RAW 5:1 REDCODE 8:1 ProRes RAW DCP 4K

Target File Size

Size Unit

Duration

Frame Rate

Audio Bitrate kbps

Container Overhead %

Resolution (for bpp calc)

Container Format

Duration

Frame Rate

Bitrate Reference Guide

ProRes 422 HQ 4K: ~880 Mbps

ProRes 4444 4K: ~1.3 Gbps

H.264 1080p: 10-25 Mbps

H.264 4K: 35-68 Mbps

H.265 4K: 20-40 Mbps

DNxHR HQ 1080: 175 Mbps

Netflix 4K: 18-25 Mbps

Instagram Reel: ~8 Mbps

TIFF 16-bit 4K: ~1.9 GB/s

EXR 4K: ~500 MB/s (ZIP)

Dolby Atmos: 768 kbps

CD Quality (PCM): 1411 kbps

Tip: Select a codec preset and resolution — the bitrate auto-updates based on bits-per-pixel! Image sequences calculate per-frame sizes.

Run Time Builder

Build a running order — labeled clips, reels, cumulative timecode, target delta, and export

Frame Rate

Label (optional)

Duration

Reel/Group (optional)

Quick: 30s 1 min 5 min 10 min 1 hr

Bulk Import

One clip per line. Formats: 00:01:30:00 · Scene 5, 00:01:30:00 · Scene 5, 00:01:30:00, R2 · plain seconds.

Resolution Chart Generator

Generate production test charts — Siemens stars, zone plates, color bars, grids

Quick: HD 1920×1080 UHD 3840×2160 DCI 4K 4096×2160 DCI 2K 2048×1080

Width

Height

Chart Type

Overlay

Burn-in Text (optional)

Framing Guidelines Generator

Generate transparent overlays for any resolution — drop over video in your timeline

Source Aspect Ratio

Custom Source (if selected)

Output Canvas Resolution

Source Width

Source Height

Cinema Targets

Social Targets

Guides & Grids

Burn-in Label (optional)

Output: 3840×2160

Aspect Ratio Calculator

Letterbox / pillarbox, crop, desqueeze and pixel-aspect math — plus a reference for every ratio

Fit / Crop Calculator

Source Width

Source Height

Resolution Preset

Target Aspect Ratio

Custom (w:h or decimal)

Mode

Anamorphic Desqueeze

Recorded Width

Recorded Height

Squeeze Factor

Pixel Aspect — SAR · PAR · DAR

Stored Width

Stored Height

Pixel Aspect (PAR)

Ratio Reference

EDL ↔ XML Converter

Convert between CMX3600 EDL and FCPXML / Resolve XML

Drop EDL file here or click to browse

.edl or .txt — CMX3600 format

EDL Content

Output

FPS

Resolution

Subtitle Converter & Toolkit

Convert between SRT, VTT, STL, XML — plus clean, shift, merge

Drop file or browse

.srt .vtt .stl .xml .ass .ssa

Source

Target

STL Frame Rate

Content

Options

Time Shift (±sec)

Quality Control

Check reading speed, line length, duration and overlaps against broadcast / streaming limits — then auto-fix.

Max Reading Speed (CPS)

Max Chars / Line

Max Lines

Min Duration (s)

Max Duration (s)

Min Gap (frames)

Guidelines: Netflix EBU BBC

Scene Cut Detection

Analyze video for edit points — generates an EDL from detected scene changes

Drop video file here or click to upload

MP4, MOV, WebM — analyzed locally in your browser

Sensitivity

Min Shot Duration (sec)

Source Frame Rate

Sample Every (frames)

QC Detection

Black frames Frozen / duplicate frames Flash frames

Black Level (0–255)

Color Management & LUT Generator

Generate .cube/.3dl LUTs, ASC-CDL color decisions, and convert between color spaces

LUT Preview

Drop image here or click to upload

Before After

Preview updates live as you adjust — drag the slider to compare before / after

Scopes

Scopes read the graded (after) image and update live as you correct.

LUT Generator (.cube / .3dl)

Output Format

LUT Size33

From Color Space

To Color Space

Exposure (stops)0

Contrast1.0

Saturation1.0

Lift (shadows)0

Gamma (midtones)1

Gain (highlights)1

Shadows

Midtones

Highlights

Drag a wheel to push color into that tonal range · double-click to reset

Temperature (warm/cool)0

Tint (green/magenta)0

Tone Map

Creative Looks

CDL (Color Decision List) Generator

Warm Contrast Cool Teal Film Print Bleach Bypass Vintage Fade Cinematic Gold

ASC-CDL primaries: Slope = Gain (highlights), Offset = Lift (shadows), Power = Gamma (midtones).

Slope · Gain (R G B)

Offset · Lift (R G B)

Power · Gamma (R G B)

Saturation

Look Name

Parse Existing CDL

Color Space Preview

R128

G128

B128

About LUTs & CDL

.cube LUT
3D Lookup Table format supported by DaVinci Resolve, Premiere Pro, Baselight, Nuke

.3dl LUT
Autodesk Lustre format (10-bit lattice, red-slowest ordering), also compatible with Scratch, Flame

ASC-CDL
Industry standard for color corrections: Slope, Offset, Power, Saturation

Camera Log
Accurate transfer curves & native gamuts: ARRI LogC3, Sony S-Log3, RED Log3G10, Canon C-Log3, V-Log, BMD Gen5

Gamut Mapping
Rec.709 · Rec.2020 · DCI-P3 · ACEScg — converted through CIE XYZ so primaries map correctly