Setting up oscam.dvbapi 2026: a complete guide

If you have already set up OScam, configured the reader and client, but the channels are still not decrypted — the problem is most likely inoscam.dvbapi 2026. The file is small, but it critically affects how the daemon interacts with the DVB subsystem of the receiver. Here we will break down each parameter with real examples, not abstract descriptions.

What is oscam.dvbapi and how does it work in 2026

dvbapi is a module within OScam that is responsible for local decryption directly on the receiver. The daemon receives ECM requests from the DVB device, sends them to the reader (local or network), receives CW, and returns it back through the DVB API of the Linux kernel. Without this module, OScam operates like a regular proxy server but does not decrypt anything locally.

The fileoscam.dvbapi manages CAID priorities, provider filtering, and mapping. It does not include the module — that is done byoscam.conf. The dvbapi file simply tells the module which CAID to prioritize, which to ignore, and where to add a delay.

Purpose of the dvbapi file and its connection with the dvbapi module of OScam

The dvbapi module in OScam communicates with the Linux kernel through two mechanisms: socketcamd.socket (local mode) or network TCP port 2000 (DVBAPI_NETWORK). The first option is when OScam runs directly on the receiver. The second is when the receiver sends PMT/ECM over the network to an external machine with OScam.

The fileoscam.dvbapi is read once when the module starts. Changes are not applied without restarting the daemon.

Where the file is located: /etc/tuxbox/config/oscam/ and /var/keys/

The path depends on the image and on the parameter-c with which the daemon is started. Standard locations:

• OpenATV, OpenPLi: /etc/tuxbox/config/oscam/oscam.dvbapi
• VTI: /etc/tuxbox/config/oscam.dvbapi (without subfolder)
• Manual installation: is determined by the parameterConfigDir — check throughps aux | grep oscam, look for the key-c /path/to/configs
• Some builds: /var/keys/oscam.dvbapi

If OScam starts without-c, it looks for configs in/etc/oscam/. You can check the active path in the web interface on port 8888: sectionFiles → dvbapi.

Supported modes: DVBAPI_3, DVBAPI_NETWORK, PMT protocol

OScam supports three modes of operation for dvbapi:

• DVBAPI v3 — classic mode through/dev/dvb/adapterX, direct interaction with the DVB stack. Works on most Enigma2 boxes.
• DVBAPI_NETWORK — the receiver (with a plugin like OpenWebif-dvbapi or built-in support) sends PMT via TCP to port 2000 to an external OScam. Useful when OScam is on a NAS or router.
• PMT protocol — transmission of Program Map Table directly, without camd.socket. Used in combination with pmt_mode 6 on modern images.

Enabling dvbapi in oscam.conf

Without the section[dvbapi] withenabled = 1 inoscam.conf the fileoscam.dvbapi is simply ignored. This is the first thing to check when there is a black screen. Here is a working configuration example:

[dvbapi]

Section [dvbapi]: enabled, au, pmt_mode, request_mode

Parameterau (Auto Update) enables automatic EMM key updates. For most tasks, set it to 1. Parameterpmt_mode — the most important and problematic. Values range from 0 to 6:

• 0 — reads PMT viacamd.socket, classic for old boxes
• 1 — reads PMT via files in/tmp/pmts/
• 2 — combined: socket + files
• 3 — only through socket, without files. Works well on old Dreambox DM800
• 4 — dvbapi v3, direct reading of PMT from DVB device
• 5 — like 4, but with support for multiple adapters
• 6 — recommended for modern Enigma2 (OpenATV 7.x, OpenPLi 9.x). Uses netlink socket of the kernel.

Parameterrequest_mode: 0 — OScam polls readers sequentially, 1 — parallel request to all readers simultaneously. When there are multiple sources, set to 1, otherwise the ECM time will accumulate.

Parameter boxtype: dreambox, dbox2, ipbox, qboxhd, pc

Valueboxtype determines how OScam interacts with the DVB daemon of the receiver. For Enigma2 boxes (Vu+, Gigablue, Formuler, Edision, and others) — alwaysdreambox. For PC with VDR or Kodi —pc. Incorrect boxtype — guaranteed black screen, even if everything else is configured correctly.

Parameter user and binding to reader

Parameteruser specifies which user fromoscam.user is used for local decryption. This user must have the required CAID listed in thecaid field. If the field is empty — the user has access to all CAID, which is usually fine for local decryption.

Syntax and priorities in the oscam.dvbapi file

This is where most tutorials give up and only write about priority lines. Let's break down all types of lines. The file is read from top to bottom, the first match wins — order matters.

Lines P (priority), I (ignore), M (map), D (delay), L (length)

P — Priority. Sets the priority for CAID/provider/channel. OScam will try this source first.

P: 0500:000000:0000:0000

I — Ignore. Completely excludes CAID or specific ECMPID from processing. Useful for channels with fake ECMPID that cause OScam to waste time on useless requests.

I: 0100:000000:0000:0000

M — Map. Redirects CAID to another. For example, if a channel is broadcast with CAID 0x1234, and you have a card/line for 0x0500 — it can be mapped.

M: 1234:000000:0000:0000:0500:000000

D — Delay. Adds a delay in milliseconds before sending ECM. This is necessary for channels that quickly change ECMPID — without a delay, OScam manages to send a request for an already outdated PID.

D: 0500:000000:1234:0000:500

L — Length. Sets the length of ECM for a specific CAID. Used rarely, mainly for non-standard cards.

L: 0500:000000:0000:0000:272

Format CAID:ProviderID:SID:ECMPID

Each line uses the format:

[type]: CAID:ProviderID:SID:ECMPID

All values in hex. Zeros mean wildcard — any value is acceptable. Examples of masks:

• 0500:000000:0000:0000 — all channels with CAID 0500, any provider
• 0500:020000:0000:0000 — CAID 0500, only provider 020000
• 0500:020000:1234:0000 — specific channel SID 0x1234 from the provider
• 0500:020000:1234:0200 — specific ECMPID 0x0200 on a specific channel

Examples of priority for the desired CAID for a specific channel

Suppose the transponder carries channels with two CAIDs: 0x0500 (Viaccess) and 0x1800 (Nagravision). You only have a line working on Viaccess. Without the dvbapi file, OScam might try Nagravision first and waste time. The solution:

# Priority of Viaccess over Nagravision for all channels

If there are several providers with the same CAID on the transponder, and you have different lines with different quality — specify the specific ProviderIDs in order of preference:

P: 0500:020000:0000:0000

The first line — provider 020000 has priority. If it doesn't work — it will try 030000. The last line is a fallback for all other providers with this CAID.

Ready-made template fileoscam.dvbapi for a typical Enigma2 installation:

# Ignore fake CAIDs

Diagnostics and troubleshooting of dvbapi

A black screen after setup is a normal part of the process. No panic, just methodical diagnostics.

Reading oscam.log and the web interface (port 8888)

First, open the OScam web interface:http://[IP_receiver]:8888. Go to the sectionClients — look for a client with the type dvbapi. If it’s not there, the module did not start.

Inoscam.log (usually/tmp/oscam.log or there where the configs) look for lines:

dvbapi: found /dev/dvb/adapter0/demux0

If you seedvbapi: disabled —enabled=1 in oscam.conf is not set. If there is no mention of dvbapi at startup — OScam is built without module support (this happens with some binaries).

Errors: 'no stream found', 'cw not found', 'fatal error'

no stream found — OScam does not see the DVB adapter. Check that/dev/dvb/adapter0 exists:ls /dev/dvb/. Check permissions:ls -la /dev/dvb/adapter0/ — the user under which OScam runs must have access todemux0 anddvr0.

cw not found — The ECM request reached the reader, but there is no response. Either the CAID is not supported by your line, or the line is down. Check the status of the readers in the web interface.

Conflict with another softcam — if CCcam or MGcamd is running on the receiver at the same time, they may capture camd.socket first. OScam will not receive PMT. Stop all other softcams before starting OScam.Multiple tuners

— with two or more tuners (adapter0, adapter1) OScam must handle DVB devices for each. The web interface sectionServices → DVB API will show how many adapters are captured. If specific adapter mapping is needed — use theboxtype parameter and check mtab mapping viacat /proc/mounts.Check via oscam status and dvbapi log level

For detailed dvbapi logging, increase the logging level in

oscam.conf:[global]

[global]
logfile         = /tmp/oscam.log
maxlogsize      = 512
loglevel        = 64

The value 64 is a mask for dvbapi events. After restarting, the log will become verbose, but you will see every PMT request, every ECM, and every CW response. Do not keep loglevel=64 constantly — the log grows quickly.

Restarting the daemon:

# Enigma2 via init.d&& sleep 2&& oscam -c /etc/tuxbox/config/oscam -b

After restarting, switch the channel in Enigma2 — this will cause the player to resend the PMT to OScam.

How to choose a line source for stable decryption

Configurationoscam.dvbapi 2026 by itself will not yield anything if the line source is unstable. The quality of the source is visible directly in the OScam log — no marketing promises are needed.

Criteria for evaluating the quality of the source without reference to names

Look at the ECM time in the log. The line looks something like this:

2026/06/10 14:23:01 c (ecm) [user] Succeeded (ecmtime=180ms)

Good ECM time is up to 300 ms. Normal is 300–800 ms, viewers may occasionally notice slight freezes when switching. More than 1000 ms is a problem, and channels with fast CW updates (every 10 seconds) will start freezing constantly.

Stability of uptime, ECM response time, support for the required CAID

The uptime of the reader is visible in the OScam web interface: the sectionReaders, columnConnected. If the reader reconnects more than once a day — the source is unstable.

Support for the required CAID — check immediately during testing. In the sectionReaders → Info the CAIDs that the server provides are visible. If the required CAID is not in the list — the source is not suitable for your package, no matter how many channels it claims.

A good source also shows a minimal variation in ECM time. If the average is 200 ms, but sometimes jumps to 3000 ms — this is a sign of an overloaded server or unstable upstream.

Signs of an unreliable source

In the OScam log, it looks like this:cw not found on channels that should work. Orreader disconnected followed byreader reconnected every few minutes.

Another sign is chaotic ECM times: 100 ms, then 2500 ms, then 80 ms, then timeout. This indicates problems on the server side: queues, overload, unstable card.

Freezes every 10–30 seconds with a stable connection to the server — most likely, the server is not able to update CW in time. Checkecmtime in the log at the moment of the freeze.