If OBS cannot connect to YouTube Live on Airtel broadband, check the stream URL and key first, then isolate OBS and your local network before treating it as an ISP problem. A failed connection alone does not show that Airtel blocks YouTube RTMP.
The research for this article found no authoritative, current evidence that Airtel blocks YouTube RTMP. The sequence below helps you separate a wrong endpoint or protocol from a computer, router or connection fault, and then gather useful evidence about a possible route problem.
Do not assume Airtel blocks YouTube RTMP
Start with the exact error OBS reports. “Failed to connect” or a timeout is not the same symptom as an SSL or certificate error, and neither is the same as a stream that connects but drops frames. Each points to a different set of checks. Note the wording and time before changing anything.
YouTube’s guidance says to check the URL and whether the encoder supports RTMPS when a connection times out. An SSL error can also point to a wrong server or port. Meanwhile, OBS lists possible problems in the connection between your computer and the ingest server, including network congestion and hardware in the path. Those possibilities do not identify which one is responsible in your case. See YouTube’s RTMPS guidance and the OBS connection troubleshooting guide.
A useful diagnosis changes one thing at a time and records what happened. If you replace the URL, disable a VPN, move from Wi-Fi to Ethernet and restart the router all at once, a successful attempt will not tell you which change mattered. Begin with the endpoint and credentials; move outwards to software and equipment only when those are confirmed.
Copy the current URL and key from Live Control Room
Open YouTube Live Control Room and copy the server URL and stream key shown for the stream you intend to run. Use those current values rather than an old note, a screenshot or an endpoint copied from an unrelated tutorial. The key is a credential: do not paste it into a public support post or include it in a screenshot you share.
Check the URL character by character, including its protocol. For YouTube’s encrypted ingest path, the protocol should be rtmps://, not rtmp://. YouTube says both the protocol and server should be rtmps when using RTMPS. A different or stale URL can make OBS fail before the video itself becomes relevant.
Copy the stream key into the matching key field as well. A key problem is different from a connection problem, but stale or mismatched values can make a correctly configured connection attempt fail to start the intended broadcast. Avoid retyping a long key if copying it is practical, and check that no extra spaces were included.
Keep the first test simple: use the URL and key from Live Control Room without changing video settings, encoder choices or bitrate. If you are also investigating a black output after a connection succeeds, that is a separate fault; this guide to fixing a black screen in an OBS prerecorded stream covers that symptom.
Check OBS service and matching fields
In OBS Studio, open the stream settings and check that the service is configured for YouTube, then confirm that the server and stream key fields correspond to the values you copied. If OBS presents a service choice and a server field, do not assume choosing YouTube automatically means the manually entered URL is current. Compare what OBS will use with the value in Live Control Room.
If you use a custom server setting, inspect it carefully rather than switching between several presets at once. A service preset may populate a server address; a custom configuration may instead leave you responsible for entering one. The important point is that the actual address sent by OBS must match the current YouTube endpoint and protocol you intend to test.
Read OBS’s connection error before changing settings. A timeout suggests checking endpoint, protocol and reachability; an SSL error makes the server and port especially relevant. If OBS connects but the broadcast later drops frames, you have moved from initial connection troubleshooting to stream stability. The YouTube RTMP stream health warnings guide is relevant once a stream is reaching YouTube and reporting health warnings.
Do not change the video bitrate as a first response to an endpoint or SSL error. Bitrate affects the amount of data sent after a connection is established and can matter for a weak or congested upload path, but it does not correct a misspelt hostname or an rtmp versus rtmps mismatch. Keep the test controlled so the result remains interpretable.
Verify the RTMPS endpoint and port setting
Prefer the URL that Live Control Room currently gives you. YouTube’s documentation says port 443 may be specified when the encoder allows it. OBS’s current service configuration lists rtmps://a.rtmps.youtube.com:443/live2 as the primary ingest URL and rtmps://b.rtmps.youtube.com:443/live2?backup=1 as the backup. These are useful reference points, but service records can change; the URL displayed for your own stream is the better starting point.
When checking an address, include the protocol, hostname, port and path. A URL that looks broadly like a YouTube address can still be wrong if one of those parts differs. Do not add a port or replace the URL simply because a forum post suggests it. If your encoder setting supports it and YouTube’s current instructions call for it, verify that port 443 is specified as expected.
The primary and backup endpoints provide a controlled comparison if your setup makes both available. Test the current primary first, record the result, and then test the backup without changing other variables. If one works and the other does not, note that distinction. It narrows the question to the endpoint path or its handling, but it does not by itself establish why the difference occurred.
Do not use inbound port forwarding as a routine fix. OBS initiates an outbound connection to YouTube; the official guidance reviewed here points to the correct RTMPS URL and port rather than opening inbound ports on your router. If you are unsure whether a setting belongs to OBS or the router, leave the router’s inbound rules unchanged while performing these checks.
Test the local computer, router and connection
With the URL and key verified, test the local path in a reproducible order. First, check OBS network settings. OBS recommends leaving “Bind to IP” at its default in normal use; if you suspect IPv4/IPv6 behaviour, its guide suggests trying IPv4-only as a diagnostic option, then returning to the default if that does not help. On Windows, OBS also documents Network Optimizations and TCP pacing as settings to try. Change one setting, test, and record the outcome rather than keeping an unhelpful change.
Next, temporarily test with a VPN off if one is in use. A VPN changes the route from the computer to the service, so a different result is informative, although it does not identify a specific fault on its own. Check whether firewall or antivirus inspection may be interfering. If a careful test points to security software, restore protection and use a targeted OBS exception rather than leaving protection disabled.
Then simplify the physical path. Restart the modem or router, test a direct Ethernet connection instead of Wi-Fi if practical, and inspect or swap a cable that may be suspect. For a test, remove unnecessary extenders or switches between the computer and router. OBS identifies network cards, cables, routers, switches and extenders among the hardware that can contribute to connection problems.
Keep notes such as “Wi-Fi failed; direct Ethernet succeeded” or “VPN off made no difference”. A comparison like that is more useful than saying the connection is unreliable, because it tells you what changed. If your computer also runs a 24/7 stream, a local problem that causes repeated drops can interrupt the broadcast even when the file and YouTube settings are correct. For background on a different always-on workflow, see how a recorded chemistry revision channel can stream continuously.
Compare connectivity on another path if available
Only after checking the endpoint and local setup, compare the same computer and OBS configuration on another internet path if you can. A phone hotspot is often the simplest test; another ISP can also help. Keep the stream settings and endpoint constant. If the setup connects over the alternate path but repeatedly fails on Airtel, that raises the likelihood of a difference in the Airtel path. It does not prove an Airtel policy or identify whether the cause is routing, congestion, a transient fault or something else.
You can also compare the primary and backup YouTube endpoint while staying on the same network. Keep a small record with one row per attempt: network used, endpoint, time, error and result. Do not test several changes between observations. A repeatable comparison is more useful than an isolated success or failure, but even repeated tests are evidence for support, not a guaranteed diagnosis.
If both Airtel and the alternate connection fail with the same verified endpoint and key, look again at OBS, the URL and local security or network settings. If another device on the Airtel connection also has trouble reaching YouTube Live, that broadens the scope beyond one OBS installation, but it still does not demonstrate that RTMP is being blocked. If only one computer fails, focus on that machine’s software and hardware before concluding that the broadband route is responsible.
For a continuous channel, avoid turning a brief comparison into a permanent change without considering the actual workload and costs. Your useful next step is to identify the component that changes the outcome and decide whether it is stable enough for the channel’s operating needs. If your plan is to leave a playlist running rather than operate OBS on a local computer, this continuous playlist workflow with FFmpeg describes a different approach; it does not diagnose an Airtel connection.
Escalate with diagnostic evidence
If local checks do not resolve the issue, contact Airtel with evidence rather than a conclusion that the provider is blocking YouTube. OBS advises contacting the ISP when troubleshooting has not resolved a connection issue, since congestion or changes outside the user’s control can be involved. The evidence package below is practical guidance inferred from that troubleshooting sequence, not a published Airtel support requirement.
| Record | What to include |
|---|---|
| Time and place | When each attempt failed, and your city or locality |
| Connection path | Wi-Fi or Ethernet, router connection, and whether a hotspot or other ISP worked |
| OBS result | Exact error wording and the relevant OBS log |
| Endpoint test | Whether you used the current primary or backup URL, and the observed result |
| Controlled changes | VPN, firewall test, router restart or cable change, with each result |
Before sharing an OBS log, review it for the stream key or other private details and redact them. Give support the exact failure wording rather than a general description. Include plan details if useful to the support conversation, but do not assume the plan alone explains an ingest connection failure.
A clear report might say: the current URL and key were copied from Live Control Room; the protocol was RTMPS; the primary endpoint timed out at a recorded time on Ethernet; the same OBS setup connected over a phone hotspot; and the backup endpoint gave a specified result. That describes observations without claiming a cause that has not been established. Ask Airtel to investigate the connection path and provide the time and locality so they can assess the issue.
If you need the channel to continue while investigating, separate the immediate operating decision from the diagnosis. A different route succeeding can give you a temporary way to test or broadcast, but it does not prove why the Airtel attempt failed or guarantee that another connection will remain suitable. StreamNeo removes the need to leave your own computer running when a single uploaded video is the right format: you upload it and provide the YouTube stream key, while the broadcast runs and is monitored without a local OBS session. It is YouTube-only, so it is not a solution for every channel or for a fault that affects YouTube access more broadly.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
Does Airtel block YouTube RTMP?
The research for this article found no authoritative, current evidence that Airtel blocks YouTube RTMP. A failure on Airtel is not enough to establish that claim; compare the same setup on another path and gather logs before escalating.
Which URL should I use in OBS?
Use the current server URL shown in YouTube Live Control Room, with the stream key shown for that stream. For YouTube’s encrypted ingest, check that the protocol is rtmps://; YouTube says port 443 may be specified when supported by the encoder.
Should I open ports on my router?
Do not treat inbound port forwarding as a routine remedy for an OBS connection to YouTube. OBS makes an outbound connection, and the checks here focus on the correct RTMPS endpoint, local software and the connection path.
What should I send Airtel support?
Provide the failure time, locality, exact OBS error, a reviewed log with secrets removed, endpoint tested and whether wired or Wi-Fi changed the result. Include whether the same computer and settings worked on a hotspot or another ISP, while making clear that the comparison suggests a path difference rather than proving its cause.