OSCam (Open Source Conditional Access Module) is a software CAM (Conditional Access Module) used primarily to decrypt digital TV streams — especially DVB (Digital Video Broadcasting) — by interfacing with smart cards, card servers, or software emulators.
It supports many encryption systems:
OSCam can act as:
au = 1 on the Card’s Home ReaderIf you have multiple readers with the same CAID, only set au = 1 on the reader physically holding the card that needs updates. All other readers for the same provider should have au = 0.
[reader]
label = local_card
protocol = internal
device = /dev/sci0
cardmhz = 357
mhz = 450
group = 1
emmcache = 1,3,2
blockemm-unknown = 1
blockemm-g = 1
au = 1
caid = 0x1830
detect = cd
mhz_auto = 1
Key Parameters Explained:
label : A unique name for this reader. Used for logging and client assignments.protocol : Options include internal (internal smart card reader), mouse (serial phoenix), smargo, smartreader, pcsc, or network (for remote peers).device : Path to the reader. For internal: /dev/sci0, /dev/sci1. For USB: /dev/ttyUSB0 or SmartReader:123456 (using serial number).group : Integer (1-255). Clients are assigned to groups. A client in group 1 can use a reader in group 1. This is your primary sharing control.au (Auto Update): Set to 1 if this card needs to receive EMMs (Entitlement Management Messages) to keep its subscription alive.caid : Conditional Access ID (e.g., 0x1830 for Nagra, 0x0500 for Viaccess). Optional but helps OSCam prioritize.| Metric | Good | Acceptable | Bad | |--------|------|------------|-----| | ECM time | < 80 ms | 80–150 ms | > 300 ms | | CPU usage (single card) | < 5% | 5–15% | > 25% | | Cache hit ratio | > 60% | 30–60% | < 20% | | Uptime | Months | Weeks | Days |
If you share a specific error line from your log, I can help pinpoint the exact issue in your oscam.server. oscam+server+config
The configuration of an OSCam server involves editing its configuration files, usually found in /etc/tuxbox/config/ or a similar path depending on your installation. The main files are:
| Software | Type | Best for | |----------|------|----------| | TVHeadend | DVB backend + descrambling | Integrated TV server | | DVB‑Link | Commercial | Windows + MediaPortal | | Minuet | Lightweight card server | Low‑power devices | | RasPlex + OSCam | Combined | Raspberry Pi | Irdeto , Conax , Nagravision , Viaccess ,
OSCam remains the most flexible and widely supported.