VK Video Live Won't Start a Broadcast After Pasting the RTMP Key: What to Check

First, determine where the failure occurs

Pasting the RTMP key by itself does not start a broadcast. The key links your broadcasting program to a prepared broadcast or channel, but the start is usually triggered separately: in OBS, another encoder, or the VK Video Live interface.

If the program shows a connection status but there is no preview on the VK Video Live page, the problem is more often related to the server address, key, network, or stream parameters. If the preview appears but the broadcast isn't published, you should check the broadcast page settings, channel status, and restrictions for that specific broadcast.

It helps not to change every setting at once. First, look at what exactly happens after you press the start button: the program immediately throws an error, reconnects endlessly, shows a black screen, or reports successful data transmission.

Check the RTMP address and whether the key is current

Two separate values are usually used to connect: the RTMP server address and the stream key. The address goes in the server field, and the key goes in the stream key field. If you swap them or paste the full address together with the key into one field, the connection won't go through.

Copy the data again from the page of the current broadcast. The key must not contain leading or trailing spaces, quotation marks, or an accidental line break. Don't paste interface explanations into it and don't add characters manually. If the key was created for a different broadcast, it may not work for a new one.

If in doubt, generate a new key, replace it in the program, and save the settings. It's best to fully stop the old broadcast so that two connections don't try to use the same stream. An RTMP key must not be published in chat, a description, or a screenshot: anyone who gets it can connect to your broadcast.

Set up the program to transmit the stream

In OBS and similar programs, choose a connection via a custom RTMP service if there's no ready-made VK Video Live option. In the server field, enter the RTMP address, and in the key field, enter only the key from the VK interface. Then start the broadcast in the program and check whether the status on the broadcast page has changed.

For the first test, use common parameters: the H.264 video codec and the AAC audio codec. A non-standard codec, an unsupported container format, or an overly heavy stream can cause the server to accept the connection but fail to process the video. If you previously used HEVC, AV1, or an unusual encoding scheme, temporarily switch to more compatible settings.

Check the image source in the program itself. A black screen may not be related to RTMP but to a disabled scene, incorrect window capture, or a missing microphone. If OBS shows an encoder error, computer overload, or constant reconnections, fix that error first and then try starting the broadcast again.

Rule out network problems

For a broadcast, not only internet speed matters but also the stability of the outgoing connection. With latency spikes or packet loss, the program may connect to the server and then drop the stream. This is especially common when working over unstable Wi-Fi, a VPN, a proxy, or a congested network.

During troubleshooting, connect the computer to a more stable network and disable the VPN and proxy if they aren't needed to access the service. Make sure your firewall or antivirus isn't blocking OBS. If the program log repeats messages about reconnecting, a timeout, or the server being unavailable, the cause may be the connection itself.

Also close any second program that might have been using the same key, and restart OBS. Sometimes an old connection keeps hanging after a failure, which is why a new start doesn't go through right away.

If the technical settings are fine

Check whether the broadcast was created on the right channel and whether it's open to start. Make sure you're authorized in the correct account, and that the broadcast page isn't closed, canceled, or waiting for a separate action in the interface. Button names and the order of steps may change after service updates.

If the stream reaches VK Video Live but publishing doesn't begin, save the error text and the time of the attempt. Check the service notifications, the channel status, and whether broadcasts are available for the account. When contacting support, don't send the RTMP key itself: it's enough to describe the steps, attach a screenshot without sensitive data, and include the message from the program log.

What to do, step by step

1. Stop the old broadcast and make sure the key isn't being used in another program.
2. Copy the current RTMP address and key from the page of the current broadcast.
3. Paste the address into the server field and the key into the separate key field.
4. For the test, choose H.264 and AAC, and check the scene, image source, and sound.
5. Disable the VPN, check network stability, and start the stream again.
6. If the connection is established but the broadcast isn't published, check the broadcast page, channel, and error message.