Search files, editable visual templates, and live browser targets from one registry-backed directory. Filtered query views stay crawlable for links but are deliberately noindex; the stable taxonomy pages below remain the canonical search surfaces.
Page 9 of 17; 24 results per page.
Halved frame rate where each output frame is the AVERAGE of the two it replaces, rather than one of them — what a long shutter angle actually produces. Substantially harder than clean decimation, because the interpolator must undo motion blur as well as invent the missing instants, and no input frame matches any ground-truth frame exactly.
The same five cues as a plain JSON array with float second timings — the shape most caption pipelines use internally between parsing one format and writing another. Handy as the expected intermediate when testing a converter, since it removes timestamp-formatting differences from the comparison.
A machine-readable index of all 67 timed-text, streaming-manifest and ad-signalling fixtures in this wave, with id, format, path and byte size for each. Useful as a work-list when running a parser across the whole suite, and as a manifest to diff against after regenerating.
Video QC companion SAMPLE (av-sync-notes.json) for Wave G suites.
Enhanced LRC with per-word timings in angle brackets alongside the usual per-line timestamps — the format karaoke and lyric-sync apps consume. Includes the standard metadata tags, an offset field, and a final empty timestamp that clears the display. Simple LRC parsers read only the line timings and silently render the word markers as visible text.
The clip as M4V — Apple's MP4 variant used by iTunes. Browser-playable; for testing M4V handling and M4V↔MP4 conversion.
The exact per-frame alpha used to composite every clip in this group, as an 8-bit greyscale clip: white is opaque subject, black is background, and edges carry genuine intermediate values because the matte is anti-aliased rather than binary. This is what makes matting output measurable — compare a predicted alpha against this frame by frame instead of inspecting a composite and forming an opinion.
The same subject and the same alpha, composited over busy patterned — no chroma screen, which is the case a general background-removal model actually has to handle. Score the predicted alpha against the ground-truth matte in this group.
The canonical keying setup: the subject over a chroma-green field carrying a deliberate vertical lighting falloff, because a perfectly flat key is unrealistically easy. Pull a key, then score the resulting alpha against the ground-truth matte in this group.
The same subject and the same alpha, composited over colour close to subject — no chroma screen, which is the case a general background-removal model actually has to handle. The background colour deliberately sits close to the subject's own, so colour alone cannot separate them and the model must use shape and motion. Score the predicted alpha against the ground-truth matte in this group.
The same subject and the same alpha, composited over dark studio — no chroma screen, which is the case a general background-removal model actually has to handle. Score the predicted alpha against the ground-truth matte in this group.
The same subject and the same alpha, composited over office interior — no chroma screen, which is the case a general background-removal model actually has to handle. Score the predicted alpha against the ground-truth matte in this group.
The same subject and the same alpha, composited over outdoor daylight — no chroma screen, which is the case a general background-removal model actually has to handle. Score the predicted alpha against the ground-truth matte in this group.
The clip in a Matroska (MKV) container with H.264 video — the flexible open container used for rich multi-track media. For testing MKV demuxing and remux/conversion.
The clip in a QuickTime (MOV) container with H.264 video — Apple's container, common from cameras and editors. For testing MOV parsing and MOV→MP4 conversion.
Video muxed with a 440 Hz sine tone — for A/V container and audio-track tests.
Video muxed with an 880 Hz tone — frequency twin for audio pipeline tests.
SAMPLE clip with audio delayed ~100 ms — for A/V sync detection tools.
SAMPLE clip with audio delayed ~250 ms — for A/V sync detection tools.
SAMPLE clip with audio delayed ~500 ms — for A/V sync detection tools.
Short black flash frames SAMPLE for colour and flash QC detectors.
A clip with a short pure-black insert — for black-frame detectors and QC tools.
On-screen running timecode burned into frames — for OCR and slate tools.
A short colour-bar test pattern clip — for colour pipeline and player QC.
We use Google Analytics and show ads via Adsterra. Non-essential cookies and ad scripts run only after you allow the matching categories. See our cookie policy.
