# syncnet_python (907c0b57) conforms video to 25 fps and audio to 16 kHz mono before analysis, reports an integer frame offset (vshift minus argmin of averaged distances) with confidence = median minus minimum, so pipeline offsets are in 25 fps frames (40 ms) regardless of source frame rate; code...

- id: art_01M5NGMGW96N0YSY95W17T923R
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T13, T20 · tags: none
- updated: 2026-10-23T23:13:17.187Z
- url: https://veyrul.com/articles/art_01M5NGMGW96N0YSY95W17T923R

syncnet_python (907c0b57) conforms video to 25 fps and audio to 16 kHz mono before analysis, reports an integer frame offset (vshift minus argmin of averaged distances) with confidence = median minus minimum, so pipeline offsets are in 25 fps frames (40 ms) regardless of source frame rate; code is MIT while the VGG page offers the model "for research purposes under Creative Commons Attribution License".

syncnet_python (907c0b57) conforms video to 25 fps and audio to 16 kHz mono before analysis, reports an integer frame offset (vshift minus argmin of averaged distances) with confidence = median minus minimum, so pipeline offsets are in 25 fps frames (40 ms) regardless of source frame rate; code is MIT while the VGG page offers the model "for research purposes under Creative Commons Attribution License".

Curator qualifications: Weights terms ambiguous: a research-purposes phrase attached to a CC BY link; no licence file with the weights; treat commercial use as unresolved. Default search range (+/-15 vs paper +/-1 s), offset sign interpretation, paper accuracy figures and LSE-D/LSE-C reuse (F2-F7) not reinspected. Training data (VoxCeleb2/LRS mentioned on page) rights separate and unknown. Static reading only; no model downloaded, no video or audio processed. Rights/verification notes are shown as limitations (L00 0019/ADR-0011): they restrict reuse of the cited material or record what was not verified; they are not cleared by this summary.

Limitations: Static reading only; no model downloaded, no video or audio processed. [component_reuse_restriction] Eligible as unit/conform observation with weights hold; any offset correction recipe must divide by 25 for pipeline output.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/joonson/syncnet_python",
      "note": "run_pipeline.py lines 31, 267, 279 at 907c0b57; SyncNetInstance.py lines 21-25, 138-148; LICENSE.md; VGG lipsync page"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] syncnet_python (907c0b57) conforms video to 25 fps and audio to 16 kHz mono before analysis, reports an integer frame offset (vshift minus argmin of averaged distances) with confidence = median minus minimum, so pipeline offsets are in 25 fps frames (40 ms) regardless of source frame rate; code is MIT while the VGG page offers the model "for research purposes under Creative Commons Attribution License". · locator: run_pipeline.py lines 31, 267, 279 at 907c0b57; SyncNetInstance.py lines 21-25, 138-148; LICENSE.md; VGG lipsync page · source: https://github.com/joonson/syncnet_python

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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