Tools
Free utilities for broadcast, streaming & post.
Quick, accurate tools for the everyday maths of delivery: timecode, file size, safe areas, loudness, HDR metadata, audio layouts, reading speed. They run entirely in your browser — no sign-up, no upload, nothing stored.
Making videos or a podcast? Loudness, upload checks and safe zones for YouTube, Shorts, Reels, TikTok, podcasts and audiobooks, rather than broadcast or streaming delivery.Tools for creators →Audio sync calculator
Turn a lip sync offset into a plain instruction in frames, ms and exact samples, checked against EBU R37: from markers, a delay chain or drift, with a test clip.
Open →AudioAudio track layouts
EBU R123 / R48 track allocations as visual channel maps, the 5.1 broadcast-vs-film order trap, Dolby E placement, and broadcaster examples.
Open →AudioBroadcast loudness meter
Measure an MXF, MOV or WAV master per programme (integrated, true peak, LRA, short-term) against EBU R128, R128 s1 and ATSC A/85, with a PPM reading per channel.
Open →DeliveryChecksum manifest builder & verifier
Verify a delivery against its sha256sum/md5sum manifest (changed, missing and unlisted files called out) or generate one to send. Any size, nothing uploaded.
Open →PictureColour tag checker
Why an export looks washed out: its colour tags in the container and the bitstream, how Chrome, Safari and QuickTime show it (measured), and the setting that fixes it.
Open →DeliveryFile header reader
Drop a MOV/MP4/MXF and read its header in plain words: codec, resolution, rate, scan, bit depth, colour tags, audio tracks, timecode. Nothing uploaded.
Open →TimingFrame rate & runtime
Runtime conversion between rates: PAL speed-up (exactly 25/24), 2:3 pulldown frame counts, and which conversions change runtime and pitch.
Open →PictureHDR metadata checker
HDR10, HLG, Dolby Vision and HDR10+ in MXF, MOV or MP4 masters and Dolby Vision XML: metadata by layer and anything the standards say can’t be right.
Open →DeliveryIMF & DCP package viewer
Drop an IMF package or DCP: compositions on a timeline, every asset present or missing, PKL hashes checked, structural findings citing SMPTE clauses. Nothing uploaded.
Open →TimingLeader & clock builder
Build a start-of-programme leader — bars & 1 kHz tone, countdown clock, editable slate, black to programme start — as a timing sheet, a live clock, or a downloadable MP4.
Open →AudioLine-up checker
Check the bars and tone at the head of a master: tone level, frequency, EBU/BLITS ident and phase per channel against EBU R 68 or SMPTE RP 155, and the leader read out in timecode.
Open →AudioLoudness targets & gain
EBU R128, ATSC A/85 and real broadcaster deliveries (target, tolerance and true-peak ceiling in one table), plus a gain-to-target calculator.
Open →TimingLTC reader
Find the audio track carrying LTC in a MOV, MXF or WAV and read it: start and end timecode, frame rate, drop-frame, every jump, and how it lines up with the file’s timecode.
Open →AudioMono compatibility checker
Fold a stereo mix to mono and see what it loses, second by second: phase correlation, the worst sections, and dual-mono, one-sided or inverted channels, with the fix.
Open →TimingQC notes & marker converter
Paste or drop timecoded QC notes (CSV, TSV, text, Avid, Premiere or Resolve marker lists), validate every timecode, and export markers for Avid, Premiere Pro, Final Cut Pro or Resolve, with a report of anything lost.
Open →PictureSafe areas & aspect ratio
EBU R95 action/graphics safe and DPP/BBC caption cages at any resolution. Downloadable transparent PNG overlay, plus letterbox/pillarbox maths.
Open →TimingSegment timing checker
Find a master’s black and silence to the frame, and the head, parts, breaks and tail they make; compare them with your timing sheet or the file’s AS-11 segmentation.
Open →PictureSignal range checker
Super-black, super-white, reserved codes and out-of-gamut colour in ProRes, DNx, XDCAM, AVC-Intra, XAVC, HEVC and JPEG 2000 masters, frame by frame, against EBU R 103. In your browser.
Open →TimingSubtitle fixer & converter
Shift, resync and repair SRT, WebVTT, TTML, IMSC, EBU-TT-D, EBU-STL and SCC: fix drift from two sync points, trim overlaps, close gaps, snap to frames and convert between them, every change previewed and undoable.
Open →TimingSubtitle reading speed
Characters-per-second and WPM against a CPS ceiling you choose (one cue or a whole SRT, WebVTT, SBV, TTML, EBU-STL or SCC file), counting every character a viewer reads.
Open →TimingTimecode calculator
Add, subtract and convert SMPTE timecode across frames and real time: 23.976 to 60 fps, drop-frame and non-drop.
Open →AudioTrack layout verifier
Check a master’s real audio tracks against EBU R123 / R48: silent tracks, dual mono, copied pairs, Dolby E placement and 5.1 film order.
Open →DeliveryVideo file size calculator
Estimate master/mezzanine size from duration, codec, resolution and frame rate: ProRes, DNxHD, AVC-Intra, XDCAM, uncompressed.
Open →The tools measure, and judge only against the published standards each one names (EBU R 128, R 68, R 95, R 123, ITU-R BS.1770 and BT.2100, ATSC A/85, SMPTE ST 2086).