Setting up oscam.dvbapi in 2026: a complete guide

If you are reading this, it means OScam is already running, the reader is connected, but the channel still does not open — or opens with a delay of 10+ seconds. Most likely, the problem lies in the fileoscam.dvbapi or in the section[dvbapi] of the config. The topic of oscam.dvbapi 2026 still raises questions because the documentation is scattered across forums from 10 years ago, and most guides simply copy each other without explaining the logic behind it. Let's break it down step by step.

What is oscam.dvbapi and what does it do

OScam works with DVB API — this is the Linux kernel interface for managing DVB devices. The fileoscam.dvbapi is not the main config, but a rule table: which CAID to process first, which to ignore, which to replace with another. Without this file, OScam still works, but with default priorities, which often leads to conflicts.

The main function of the file is to manage priorities, ignores, and mapping in the formatCAID:provid:srvid. This is especially important when there are multiple key sources or multiple CAIDs for the same channel on one receiver.

The role of DVB API in the decryption chain

The chain looks like this: the receiver gets the transport stream → the Linux kernel sees encrypted packets → OScam intercepts ECM via DVB API → goes to the reader for CW → returns the Control Word → the kernel decrypts the stream.oscam.dvbapi comes into play at the stage of selecting CAID and reader for the ECM request.

If the file is configured incorrectly, OScam may try to decrypt the channel using an unsuitable CAID — wasting time on requests that are bound to fail.

Where the file is located: /etc/tuxbox, /var/keys, /usr/keys

The location depends on the firmware and theConfigDir parameter with which the daemon is launched. Standard paths:

• /etc/tuxbox/config/oscam.dvbapi — OpenPLi, OpenATV, and most Enigma2 firmwares
• /var/keys/oscam.dvbapi — some builds for Vu+
• /usr/keys/oscam.dvbapi — found in older Gemini images
• /etc/oscam/oscam.dvbapi — when manually installed on a clean Linux or in Docker

To see which path your daemon is using, the easiest way is with the command:ps aux | grep oscam. The output will show something like-c /etc/oscam or--config-dir /var/keys — this is yourConfigDir. The file must be located exactly there, otherwise OScam simply will not see it.

Connection with dvbapi modules in oscam.conf

Fileoscam.dvbapi is not read at all if there is no section inoscam.conf called[dvbapi] with the parameterenabled = 1. This is a common mistake — the file is created, the rules are written, but the module is disabled. The daemon simply ignores the file and works with defaults.

Syntax and parameters of the oscam.dvbapi file

The file is read line by line, from top to bottom. The order of lines is critical — the first match by CAID:provid:srvid wins. If you place an ignore line after a priority line for the same CAID, the ignore will never work.

Lines P (priority), I (ignore), M (mapping), D (delay), A (always)

Each line starts with a prefix letter:

• P: — priority. Tells OScam: "for this CAID/provider, try the reader first"
• I: — ignore. OScam will not make ECM requests for this CAID at all
• M: — mapping. Replaces one CAID with another before the request
• D: — delay in milliseconds before the request (rarely needed)
• A: — always, forcibly uses the specified CAID even if the channel offers another

Real examples of lines:

P: 1830:000000          # priority for Viaccess CAID 1830, any provider

Format caid:provid:srvid:ecmpid:chid

Full format of the line:P: caid:provid:srvid:ecmpid:chid. All fields except CAID can be omitted or replaced with zeros — then the rule applies to all providers/services of this CAID.

CAID is written in hex without the prefix0x. Provider — also hex, 6 digits. SrvID — service identifier from EPG or from OScam logs. Usually, for most situations, a pair ofcaid:providis enough.

Using wildcards and comments

Zeros work as wildcards:P: 1830:000000 will apply to all CAID 1830 providers. If a specific provider is needed — specify it:P: 1830:003000.

Comments start with#. Empty lines are allowed. Lines without a prefix (P/I/M/D/A) are ignored by OScam, which is convenient for temporarily disabling a rule.

Configuration of the [dvbapi] section in oscam.conf

The working block of the config for a typical Enigma2 receiver looks like this:

[dvbapi]

Let's break down each parameter — because this is where most people get stuck.

The boxtype parameter (dreambox, dbox2, sh4, pc, pc-nodmx)

boxtype — is not a brand of hardware, but a type of interaction with the DVB stack. Values:

• dreambox — the standard for most Enigma2 receivers with hardware demultiplexers
• dbox2 — old Nokia/BetaResearch boxes, rarely encountered
• sh4 — some Vu+ and AB receivers on SH4 processors
• pc — Linux PC with a DVB card (Hauppauge, TBS, DigitalDevices)
• pc-nodmx — Linux PC or Android box without a hardware demultiplexer. OScam parses the transport stream itself

Invalidboxtype — the most common reason why the DVB API does not connect to the tuner at all. If the log is silent about dvbapi after startup, the first thing to change is this.

The parameters user, pmt_mode, request_mode, listen_port

user — the username of OScam from which DVB API requests are sent. It must exist inoscam.user without service restrictions.

pmt_mode controls how OScam reads the channel's PMT table. Values 0–6:

• 0 — reads PMT from Enigma2 via camd.socket (default, works in most cases)
• 1 — reads PMT directly from the DVB stream
• 2 — combination: PMT from the stream + camd.socket
• 3, 4 — for problematic firmware where Enigma2 incorrectly transmits PMT
• 6 — only camd.socket, without direct reading of DVB. Used when there is no access to/dev/dvb

request_mode: 0 = sequential requests to readers, 1 = parallel. Mode 1 is faster but creates more load on the server.

listen_port: 0 means operation through socket/tmp/camd.socket. If you set a port (for example, 9000), OScam will listen on TCP — this is needed for integration with external players like VLC or Kodi through a softcam client.

au=1 for auto-update and delayer

au = 1 enables EMM auto-update — needed if you have a physical card in the reader and need to update entitlements. For pure cardsharing, you can leave it at 0.

delayer — delay in ms before sending CW to the decoder. Usually 0. Sometimes helps with freezes on old firmware where the decoder cannot process CW in time — try 100–300 ms.

Debugging: reading the log and solving typical problems

Most problems with oscam.dvbapi 2026 are solved through the log. If you are not reading the log — you are working blindly.

Enabling debug level (-d 255) and searching for the dvbapi line

Run OScam with maximum debug level:

oscam -c /etc/oscam -d 255 -l /tmp/oscam.log

Or write inoscam.conf:

[global]

Then filter the log:grep -i dvbapi /tmp/oscam.log. There should be lines like:

dvbapi: Found /dev/dvb/adapter0/demux0

If there are no lines about dvbapi at all — the module did not initialize. Checkenabled = 1 in the section[dvbapi].

Error 'no matching reader' and 'ECM rejected'

no matching reader means that no reader took on the ECM of this CAID. Reasons: the reader does not have rights for this CAID (checkcaid= inoscam.server), or the CAID is listed in ignore inoscam.dvbapi, or the reader is offline.

ECM rejected — the reader received the request but rejected it. This is either a problem with the key source or an incorrect CAID mapping inoscam.dvbapi — the request was sent with the wrong CAID that the server expects.

The channel does not open with the reader in working status

This is the most confusing situation: the OScam web interface shows the reader as connected, ECM requests are going through, CW is returned — but the channel still shows a black screen. Three main scenarios:

The first — incorrectpmt_mode. OScam receives CW but does not know which PID to write it to because the PMT was not read correctly. Try switchingpmt_mode from 0 to 1 or 3 and restart the daemon.

The second — socket conflict. If a built-in firmware emulator (SoftCam.Key-based) is running on the receiver, it also occupies/tmp/camd.socket. OScam cannot connect. Solution: disable the built-in emulator or change the socket path viaboxtype.

The third — permissions on/dev/dvb. If OScam is not running as root, you need to add the user to thevideo group:usermod -a -G video oscam. Check current permissions:ls -la /dev/dvb/adapter0/.

How to choose a key source: criteria not tied to the service

The fileoscam.dvbapi is configured, the config is correct — now the quality of operation completely depends on the key source. Here’s what to check technically, regardless of which service you are using.

Stability of uptime and ECM response time

ECM response time (ECM time) — a key indicator. In the OScam web interface on the reader page, it is displayed directly in the table. Normal: 100–400 ms. At 500–800 ms, there will already be periodic freezes. More than 1000 ms — the channel will constantly freeze.

Uptime is checked manually: observe the reader for 24 hours through the log or web interface. A good source does not drop more than once a day and recovers in seconds.

Support for necessary CAIDs and local providers

Before connecting, clarify the list of supported CAIDs with the provider. Standard: Viaccess (0500, 1830), Nagravision (1800), Conax (0B00), Irdeto (0604), Cryptoworks (0D00). Local providers often use specific CAIDs that not all servers support.

You can check that the server actually returns CW for the required CAID in the OScam log: the linefound (1830&003000/XXXX/XXXX/XX) after the ECM request means successful decryption.

Connection protocol and connection limit restrictions

OScam supports several protocols for connecting to servers: CCcam, NewCamd (ncam), Camd35, Gbox, CS378x. CCcam and NewCamd are the most common. CCcam operates on port 12000 (by default), NewCamd on 15050.

Note the limitations: most servers allow 1-2 simultaneous connections per account. If you have multiple receivers, you need either multiple accounts or one OScam server as a proxy for all devices. Attempting to connect 3 receivers to one account with a limit of 1 = constant disconnections.

Configuring oscam.dvbapi 2026 is not magic, but a sequential diagnosis. The correct path to the file, a working section[dvbapi] in the config, the appropriateboxtype and reading the log with-d 255 close 90% of the problems. The remaining 10% are rights to/dev/dvb and socket conflicts, which are also visible in the log if you look closely.