@article{ART003383181},
author={Jewook Lee and Jieun Lee and Byeongchan Park and Yongtae Shin},
title={CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments},
journal={ Journal of Software Forensics},
issn={3092-541X},
year={2026},
volume={22},
number={3},
pages={1-8}
TY - JOUR
AU - Jewook Lee
AU - Jieun Lee
AU - Byeongchan Park
AU - Yongtae Shin
TI - CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments
JO - Journal of Software Forensics
PY - 2026
VL - 22
IS - 3
PB - Korea Software Assessment and Valuation Society
SP - 1
EP - 8
SN - 3092-541X
AB - Forensic watermarking is used in OTT services to identify the source of illegally distributed content. Conventional A/B watermarking supports CDN cache reuse but requires two variant segments for each content resolution and segment, increasing storage and management overhead. This paper proposes a request-based forensic watermarking architecture that stores a single common segment and Watermark Embedding Metadata (WEM) and embeds a Watermark Identifier (WMID) at the CDN edge upon user request. Experiments with 10 videos encoded at four resolutions showed that storage was reduced from 7.48 GB to 3.74 GB, corresponding to a 49.98% reduction. Under warm-cache conditions, the proposed method also maintained a 100% cache hit ratio for 10, 50, and 100 concurrent users. These results indicate that the proposed architecture reduces storage overhead while preserving the cache reusability of conventional A/B watermarking.
KW - OTT;A/B Forensic Watermarking;CDN Edge;Common Segment;WEM
DO -
UR -
ER -
Jewook Lee, Jieun Lee, Byeongchan Park and Yongtae Shin. (2026). CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments. Journal of Software Forensics, 22(3), 1-8.
Jewook Lee, Jieun Lee, Byeongchan Park and Yongtae Shin. 2026, "CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments", Journal of Software Forensics, vol.22, no.3 pp.1-8.
Jewook Lee, Jieun Lee, Byeongchan Park, Yongtae Shin "CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments" Journal of Software Forensics 22.3 pp.1-8 (2026) : 1.
Jewook Lee, Jieun Lee, Byeongchan Park, Yongtae Shin. CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments. 2026; 22(3), 1-8.
Jewook Lee, Jieun Lee, Byeongchan Park and Yongtae Shin. "CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments" Journal of Software Forensics 22, no.3 (2026) : 1-8.
Jewook Lee; Jieun Lee; Byeongchan Park; Yongtae Shin. CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments. Journal of Software Forensics, 22(3), 1-8.
Jewook Lee; Jieun Lee; Byeongchan Park; Yongtae Shin. CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments. Journal of Software Forensics. 2026; 22(3) 1-8.
Jewook Lee, Jieun Lee, Byeongchan Park, Yongtae Shin. CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments. 2026; 22(3), 1-8.
Jewook Lee, Jieun Lee, Byeongchan Park and Yongtae Shin. "CDN Edge-Based Forensic Watermarking Architecture for Reducing Redundant Storage of A/B Variant Segments" Journal of Software Forensics 22, no.3 (2026) : 1-8.
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