To send a camera feed from Larix Broadcaster to YouTube Live, copy the URL and stream key for the intended stream in YouTube Studio, then enter them in Larix as a connection. Larix can use a combined URL in this form: rtmp://a.rtmp.youtube.com/live2/STREAM_KEY, with STREAM_KEY replaced by the current key shown for your stream.
Treat the key as a password: do not share it or use a sample value from an article. If YouTube offers an RTMPS URL and your installed Larix version supports RTMPS, use the URL YouTube provides rather than changing the protocol by hand.
Choose the intended live stream in YouTube Studio
The connection details belong to a particular YouTube live-stream setup, so first make sure you are looking at the right stream. Open YouTube Studio, choose Create → Go live, and use the Live Control Room’s Stream tab. Select an existing stream or create the one you intend to broadcast to before copying anything.
This matters if you have more than one scheduled event, a test stream, or a continuing channel workflow. A valid key paired with the wrong event’s settings may not send the feed where you expect. For example, if you have a scheduled evening bhajan stream and a separate test event, verify the event name and details before using either set of credentials.
YouTube documents the encoder workflow in its live-streaming help: choose a stream, use its server URL and stream key in the encoder, then check the Live Control Room for the incoming signal. Follow the current controls shown in your account, because the Studio layout can change.
If your aim is a permanent recorded programme rather than a live camera feed, Larix is not the same workflow as sending a prepared video file. A guide to looping a YouTube study playlist without a gap covers a different kind of always-on output. Here, the task is to send what Larix captures from your mobile device to a selected live stream.
Copy the stream URL and key
In the selected stream’s Live Control Room, open Stream settings and locate the server URL and stream key. Copy the URL and the key exactly as displayed. YouTube may provide a default stream key or let you select a key profile; use the one currently associated with the stream you chose, not a remembered key from another setup.
YouTube’s guide to managing live-stream settings explains the stream settings and key controls. Labels and available choices can differ depending on the stream workflow. The important point is to copy the values from the current stream’s settings page, rather than reconstructing or guessing them.
Keep the values distinct while you work. The server URL identifies the YouTube ingest destination, while the key identifies the stream configuration. In encoder interfaces with separate fields, YouTube’s instructions say to put the server URL in the server or URL field and the key in the stream-key field. Larix’s documented connection format allows you to combine them in its connection URL field, as described below.
Do not put the key in a public note, screenshot, chat message, or article. YouTube describes stream keys as sensitive credentials; anyone who obtains one could attempt to send a feed to the associated stream. If you suspect that you have exposed it, reset the key in YouTube Studio and update Larix with the replacement. YouTube notes that channel owners or managers can reset keys.
Add a connection in Larix
Open Larix Broadcaster and find its settings or connection list. Add a connection, then give it a name you will recognise, such as “YouTube Live” or the name of your scheduled event. The label is for your own reference; it does not change the YouTube destination.
Larix screens vary between app versions and operating systems, so the exact path and wording may differ. Look for the connection’s URL field. Softvelum’s Larix documentation describes connection settings and the combined server-and-key URL format. No claim here depends on a specific screen design or an unverified app version.
Enter the complete URL in the connection URL field, save the connection, and make it the active destination before starting the broadcast. If Larix offers separate fields in your installed version, follow its current interface and documentation; do not paste a combined value into a field that is explicitly labelled for only the key. The aim is for Larix to send the feed to the correct YouTube server with the selected stream’s key.
Before you start, check that the connection name corresponds to the event you selected in Studio. This small check is useful if you keep several destinations, or if you have tested with more than one stream key. For workflows that rely on a scheduled event, the XSplit scheduled-live setup guide explains why the chosen event and the incoming encoder signal need to match; the same distinction matters when your encoder is Larix.
Compose the RTMP URL for Larix
For the standard YouTube RTMP destination, the combined form is:
rtmp://a.rtmp.youtube.com/live2/STREAM_KEY
Replace STREAM_KEY with the exact current stream key from the selected stream’s Live Control Room. The word STREAM_KEY above is only a placeholder. Do not copy it literally, and do not copy any key shown in an example elsewhere.
The structure is the YouTube server URL, a slash separator, and the stream key. For this YouTube destination, the server portion is rtmp://a.rtmp.youtube.com/live2; the key follows it after /. Check carefully for accidental spaces at either end, a missing slash, or a partial copy. Do not add explanatory brackets or quotation marks around the key.
Softvelum’s Larix material documents this server-plus-key approach for the app’s connection URL. YouTube’s current encoder instructions remain the authority for the URL and key assigned to your stream. If Studio shows a different URL for your selected settings, use the value it currently exposes and ensure Larix is configured in a way its installed version accepts.
When a destination offers separate server and key fields, the arrangement is easier to inspect: server in one field, key in the other. With Larix’s combined URL, a single typo can affect either part, so compare the saved value with the Studio settings without revealing the key to anyone else. You can review it privately on your own device; avoid sending it to someone for troubleshooting.
Credentials do not configure picture quality. Resolution, frame rate, codec, audio, and bitrate are separate encoder choices. If you are also preparing a long recorded programme, the advice on preparing long MP4 files for reliable playback in OBS is about file playback rather than Larix credentials, but it illustrates why media settings and destination settings should be checked separately.
When to use RTMPS
RTMPS is RTMP carried over an encrypted connection. YouTube recommends it when the encoder supports it, but compatibility depends on the particular encoder and version. Do not assume every Larix installation, operating system, or release supports RTMPS simply because another version does.
In YouTube Studio, open Stream settings and use the lock control beside Stream URL to expose the RTMPS URL, if the option is available. Copy that URL as YouTube presents it. Do not just change rtmp to rtmps in the standard address: the provided secure URL may include server or path details that need to be retained.
YouTube’s RTMPS help page describes the secure protocol and encoder requirement. Check the documentation or settings for the Larix version actually installed on your device before selecting it. If support is unclear, stay with the RTMP URL exposed for the stream rather than guessing at compatibility.
| Choice | What to use | Main consideration |
|---|---|---|
| RTMP | The standard URL shown in Studio, combined with the current key as Larix expects | Use when it is the available compatible configuration; the transport is not the encrypted RTMPS connection. |
| RTMPS | The RTMPS URL copied from Studio’s lock control, with Larix support confirmed | Provides encrypted transport, but a protocol or URL mismatch can prevent connection. |
If an RTMPS attempt returns an SSL error or times out, check that you copied the RTMPS URL from Studio, that Larix supports it, and that you have not mixed the standard and secure URL formats. YouTube’s troubleshooting information notes that port 443 can resolve some SSL errors where the URL or encoder configuration calls for it. Do not add a port speculatively; follow the URL and instructions relevant to the setup you are using.
Keep the key private and verify the connection
Once the connection is saved, return to Studio and start the Larix broadcast. Watch the Live Control Room for the incoming preview or signal. For a scheduled stream, YouTube’s documented process includes reviewing the preview and then choosing Go live when you are ready. Sending a signal from the phone and making the event public are separate actions in that workflow.
If Studio receives no signal, check the basics in order: is the intended Larix connection active; is Studio showing the matching stream; is the full server URL present; is there a slash before the key; and is the key the current one from that stream’s settings? A key recently reset in Studio will make an older saved Larix connection stale. Update the connection with the replacement key and save it.
If Studio sees the signal but the picture or sound is wrong, the URL may already be working. Check Larix’s camera and microphone permissions, confirm audio is enabled, and inspect the selected output settings. A missing microphone permission is different from a bad stream key. YouTube’s encoder settings guidance covers supported formats and recommended settings; choose settings your device and stable upload connection can sustain.
YouTube’s recommendations for bitrate depend on resolution, frame rate, and codec. Its encoder guidance recommends constant bitrate and a two-second keyframe interval, with the interval not exceeding four seconds. Treat these as configuration guidance rather than a promise of quality: the phone’s encoding ability and the available upload connection still matter. If the signal connects but playback stutters, test a lower output setting or a steadier connection before changing credentials.
When the broadcast is finished, stop sending from Larix and end the live stream in Studio as appropriate to the event workflow. A continuing feed from the phone is not the same as a finished event in the Control Room. Confirm the stream has ended in YouTube rather than assuming that closing the app completed every step.
A mobile encoder also has practical limits for an always-on channel: the phone must remain powered, connected, and available to run the app. If your aim is a recorded video running while your own computer is off, StreamNeo can remove the need to keep that computer running by turning an uploaded file into a YouTube live stream; that is a different workflow from using Larix as a mobile camera encoder.
For a longer-running channel, separate the immediate camera setup from the operational design. A live camera feed needs an active device and stable connection, while a looped recorded stream depends on prepared media and a different encoder workflow. The VPS options for 24/7 YouTube streaming in India offer a comparison for readers assessing a computer-based continuous setup, not a substitute for selecting the correct Larix key.
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
Where do I find the YouTube stream key for Larix?
In YouTube Studio, choose Create → Go live, select the intended stream, and open its Live Control Room Stream tab or Stream settings. Copy the current key shown there, along with the stream URL; do not reuse a value from an unrelated stream or a sample.
What RTMP URL should I enter in Larix Broadcaster?
For the standard YouTube RTMP server, the combined format is rtmp://a.rtmp.youtube.com/live2/STREAM_KEY. Replace the placeholder with the exact current key for the selected stream, and use the connection format supported by your installed Larix version.
Can I change RTMP to RTMPS myself?
No. If Studio exposes an RTMPS URL, copy that full URL from the lock control in Stream settings and first verify that your installed Larix version supports it. Changing the letters in the standard URL by hand may leave out required URL details or create a connection error.
What should I check if YouTube shows no incoming signal?
Confirm Larix is using the active connection for the stream selected in Studio, then check the full URL, slash separator, and current key. If you reset or exposed the key, replace it in Larix; for RTMPS errors, verify the copied protocol and version support before changing any other settings.