Meaning of the codes of Japanese adult videos

Anyone who has looked into Japanese adult productions has come across curious acronyms in the titles — strings like IPX-896, MIAA-568 or MEYD-830. These codes are not random. They are part of a standardized cataloging system the Japanese industry has used for decades to give every work a unique identifier, much like an ISBN in book publishing or a UPC barcode in retail.

What is the JAV code?

The acronym JAV stands for Japanese Adult Video. Because the Japanese market produces thousands of titles a month, distributors and studios needed a simple, durable way to keep everything organized. The result is a code made of letters and a number, for example:

IPX-896
↑    ↑
│    └── Production number
└────── Studio or series code

This convention makes it easier to search, archive and list titles across retailer sites, private collections and the catalogs of major distributors such as FANZA (DMM).

How the system works

The letters at the start identify the studio, producer or label responsible for the release. The number shows the production sequence: IPX-001 would be the first title of that line, IPX-896 the 896th, and so on. When a studio relaunches a series or introduces a new one, the count usually restarts.

Japanese media has a reputation for meticulous cataloging, and adult video is no exception. In Western markets, the same work is often re-released under different marketing titles, which makes a unique code hard to pin down. In Japan, the code is the primary reference: any fan, store or distributor can recover the title, the studio and the cast even if the commercial name on the cover changes between markets.

The code also helps in several practical ways:

• finding a specific performer across different studios and lines;
• tracking the chronological order of releases from a given brand;
• avoiding confusion between visually similar or re-issued titles;
• preserving a historical record of the production for distributors and archives.

A large share of the industry sits inside the DMM / FANZA ecosystem, which acts as a digital and physical distributor, an export partner and, for smaller studios, the main sales channel. That is why so many different labels appear side by side on the same storefront.

List of main codes

The table below summarizes the most commonly encountered studio prefixes and what they cover. Where several sublabels belong to the same parent group, they are listed together so the structure of the industry stays visible.

Code	Studio / Label	Focus
IPX	IdeaPocket	Mainstream releases with established performers.
IPZ	IdeaPocket (older line, superseded by IPX in 2016)	Predecessor of the current IPX line.
IPVR	IdeaPocket VR	Virtual-reality releases under the IdeaPocket brand.
MIAA / MIDE / MIAB / MIAD / MIFD	Moodyz	Mixed lines covering newcomers, romance and lighter themes.
MIDD / MIRD / MDYD	Moodyz (older lines, 2000s–2010s)	Historical labels that helped define the current numbering scheme.
SSIS / SNIS / SIVR	S1 No.1 Style	One of the most recognized labels, with a roster of established stars.
SSNI	S1 No.1 Style (older line, 2016–2021)	Predecessor of the SSIS series.
ABP / ABS / ADN / ABW / ABF / ABVR	Prestige	Independent studio with a modern visual style, including VR and 4K lines.
FSDSS / FSD / FALENO / FSDVR	Faleno Group	Newer studio, cinematic direction and digital-first distribution.
MEYD / MADV / JUQ / JUX / JUL / MCSR	Madonna	Mature performers and family-themed drama.
EBOD / EYAN / EIKI	E-Body	Athletic performers and high-production visuals.
PRED / PPPD / PPPE / PPPR	Premium / OPPAI	Labels under the Hokuto group, known for high-end visual production.
RCT / RCTD	Rocket	Comedies, fantasy and parody releases.
WAAA	Waap Entertainment	School-themed and light-story productions.
HND / HUNTA / HUNTB / HUNTI / HUNTN / HNTR	Hunter	Everyday situations and humor across several sublabels.
CJOD / CJSS / CJVR	Crystal Japan	Colorful productions with an emphasis on glamour and humor.
VEC / VEMA / VENX / VENU / VEO / VEQ	Venus	Relationship- and infidelity-themed plots, with digital sublines.
NSPS / NGOD	Nagae Style	More realistic and intimate dramas.
SDDE / SDAB / SDDM / SDMM / SDMS / SDMU	SOD Create / Soft On Demand	Experimental formats, reality-style releases and documentary approaches.
STARS / STAR / SOD / SODC / SODF / SOE	SOD Star / Soft On Demand	Parent group behind dozens of sublabels; one of the largest in the sector.
DASS / DASD / DAS!	Das!	Niche fetishes and unconventional situations.
OKSN / OKAX / OKIT	Okasan Series	Dramatized family relationships and mature stories.
HOMA / HOKS / HODV / HONE	Hokuto Corporation	Large physical-distribution group (DVD) that anchors several well-known brands.
HBAD / HIBP / HIBI / HBDV / HNDV	Hibino	Drama- and psychology-driven productions.
ROE / RKI / ROOKIE	Rookie	Debut releases introducing new performers to the industry.
BF	B-Factory	Niche content and specific themes.
REAL / REALS	Real Works	Veteran studio, associated with documentary-style realism.
ATID / ADN / ADZ / SHKD	Attackers	Drama, psychological tension and complex scripts.
NATR / NKKD / NTRD / NHDT / NHDTB / NHDTM	Natural High	Humor, challenges and light fantasy across several sublines.
CJOB	Crystal Job	Unusual themes and fantasy releases.
BDSR	B-Box	Specific fetish content.
KAWD / KIDM	Kawaii	Younger performers with a romantic, school-themed atmosphere.
GANA / GVG / GVGQ / GVGK / GVGX / GODR / GOPJ / GGH	Global Media / Glory Quest	Mix of humor, everyday drama and independent production.
SCPX / SCOP	SCOOP	Documentary-style content and realistic simulations.
VANDR / VAND	V&R Planning	One of the pioneers of the 1990s, with several independent sublabels.
BEB / BBI / BBAN / BCP	BeFree / Banana	Pop-styled productions aimed at a younger audience.
WANZ	Wanz Factory	Veteran mid-sized producer, often a starting point for well-known performers.
SW / SWN / SWE / SWF / SWM	SOD Women	Female performers in everyday situations, under the Soft On Demand umbrella.
URE / UMD	Union Real Entertainment	Adaptations of manga and adult novels for video.
OAE	Orbit / Other Asia Entertainment	Independent labels distributed via DMM.
SORA / SKY / SKYN	Sky High Entertainment	Cinematic and artistic releases.
CLUB / CLUBS / CLUBD / CLUS / CLBD	Club-Style	Urban, nightlife-themed productions.
KTRA / KRMV	K-Tribe / Karma	Smaller studios with a youthful, alternative aesthetic.
SABA	Saba Entertainment	Amateur-style releases with a niche following.
YMDD / YMDS	Yume Dreams	Independent producer, intimate and documentary-style releases.
THZ	THZ Network	Digital-first distributor with a catalog similar to Faleno.
BLK / BLOR / BLSP	Black Package	Alternative aesthetics aimed at Japanese urban audiences.
MUKD / MUKC / MUKR	Mukai	One of the oldest labels, with relationship-driven narratives.
CND / CNDV / CNDX	CANDY	Colorful, youth-oriented releases, often in partnership with Kawaii.
GDTM / GDT	GOT	Short-form and independent releases linked to the indie AV circuit.
KMI / KMH / KMDS	KM Produce	Traditional group that has worked with a number of veteran performers.
RED / REDV	Red Hot Collection	Energetic productions and high-rotation short releases.
HNDS / HNDI	Honnaka	Natural, intimate direction reminiscent of Japanese documentaries.
T28 / T45 / T28P	TMA (Total Media Agency)	Studio known for parodies of anime and Japanese pop culture.
COSQ / COSP / COS	Cosmos / Cosplay Series	Fantasy and themed-costume productions, widely seen in the 2010s.
NACR / NACX	NACR Group	Independent studio focused on short and experimental releases.
FONE / FOTG	F-One	Mid-sized producer linked to the Soft On Demand group.
SVDVD / SVD	S-Video Group	Short-form releases aimed at digital distribution.
KSBJ / KSBVR	KSB Japan	Digital-first releases for online distribution.

Historical context

The JAV catalog system is older than the internet. It dates back to the VHS era of the 1980s, when Japanese video shops needed a way to file thousands of releases in dense physical shelves. The studio-prefix-and-number pattern was already in place before the DVD transition of the late 1990s, and it survived the move to digital distribution almost unchanged.

The biggest single shift came with the rise of DMM in the 2000s. As online retail centralized the market, FANZA (the consumer-facing arm of DMM) became the de-facto catalog for the entire industry. Today, the same JAV code that appears on a DVD sleeve will also resolve on a FANZA product page, which is why the system has remained so durable: it works equally well on a paper sleeve, in a database and on a streaming storefront.

More recent additions follow the same logic. VR lines (such as SIVR, IPVR, ABVR, FSDVR) keep the studio prefix and simply add a "VR" suffix, so the catalog stays unified. The same approach has been used for 4K remasters, digital-only lines and compilation series. The code is, in effect, a permanent identifier that outlives format changes.

Rules of thumb for reading a code

Four short heuristics cover most cases:

• The letters identify the studio; identical prefixes always point to the same parent label, even across subseries.
• The number increases chronologically; lower numbers are older releases from that line, higher numbers are newer.
• A suffix like VR, Z, D or B usually marks a format variant (virtual reality, digital remaster, special line or compilation) rather than a different studio.
• If two codes share the same letter group but a different number range, you are looking at different subseries of the same studio, not unrelated producers.

When in doubt, pasting the full code into the search field of a major distributor remains the most reliable way to identify a release, since the catalog is updated continuously.

Conclusion

Codes like IPX-896 or MIAA-568 are, in practical terms, the ID system of the Japanese adult video industry: a long-standing convention that keeps an enormous production organized and that travels well across retailers, archives and re-releases. Understanding the pattern is also a small window into the broader culture of cataloging that runs through Japanese audiovisual media — from manga volumes and anime episodes to retail product codes — where a stable identifier is treated as part of the product itself.