delivery-qc
Delivery QC
Nothing leaves the studio on the strength of "it rendered". Every deliverable - the 30 s master, each cutdown, each vertical version, every episode - is measured against its spec by tools, not by eye, and the measurements are written into the package. A fail blocks delivery; a warn ships only with a human's sign-off recorded in the report.
Specs per deliverable
| Deliverable | Frame | fps | Duration rule |
|---|---|---|---|
| Ad master and cutdowns | 1920×1080 (16:9); optional 1080×1920 | 60 (25 for a China TV version) | the edit's computed length ±1 frame; broadcast spots exactly 30.0 / 15.0 / 6.0 s |
| Creator short, vertical | 1080×1920 | 30 or 60 as briefed | Shorts ≤ 180 s (research, 4.3) |
| Bilibili / YouTube long-form | 1920×1080 or 3840×2160 | 24 / 30 / 60 as briefed | as edited |
| Micro-drama episode | 1080×1920 | 24 | as edited; under 20 min (regulation, research 3.5); 1-3 min domestic, 60-90 s overseas |
Codec for all: H.264 High profile, yuv420p, BT.709 primaries, transfer and matrix tagged, constant frame rate, moov atom at the front (faststart); AAC-LC stereo 48 kHz (320 kb/s from the cut); MP4. YouTube recommends 2 consecutive B-frames and CABAC (research, 4.3); the x264 preset used may differ on B-frames - warn, do not fail.
Bitrate: the cut encodes crf 16 under a ceiling of 0.2 bits per pixel per frame, never under 8 Mb/s - about 25 Mb/s at 1080p60, 12 at 1080×1920×30, 10 at 1080p24 (bitrateCeilingMbps, shared by the encoder and QC). Fail above the ceiling by more than 10% (checked). Warn below YouTube's 1080p SDR reference (8 Mb/s at standard frame rates, 12 at high frame rates; research 4.3) - a static drama scene can legitimately fall under it, but a whole file that does is under-encoded for upload.