Hard Authentication of H.264 Video Applying MPEG-21 Generic Bitstream Syntax Description (gBSD)
Bibliographic record
Abstract
While trivial research has been conducted in watermarking and authentication of H.264 video in recent years, most techniques require cascaded operations within a video adaptation scenario. In this paper, we propose an authentication scheme for adapted H.264 video content to detect integrity at the receiver's side without the need for cascaded operations. The proposed scheme utilizes MPEG-21 gBSD for hard authentication of H.264 video in the compressed domain and does not necessitate any cascaded decompression and recompression. The design uses content-based authentication which is derived from a hash value. The authentication data is embedded as a fragile watermark, and the marking space is selected during the adaptation process of the H.264 video by parsing the gBSD. The authentication information is embedded in already encoded videos during adaptation. Proof of concept and performance evaluation is also presented.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".