Cloud-based multistreaming sends one live feed through a service that distributes it to YouTube and other destinations. The right service depends on whether you want to produce in a browser, keep an encoder such as OBS and add a relay, or use an encoder-led workflow with custom outputs and monitoring.
There is no evidence-based universal winner among StreamYard, Restream and Castr. Compare how each fits the show you actually make: who operates it, where it needs to go, and what you need to see or control when it is live.
What cloud-based multistreaming does
Without a relay, your computer or encoder may need to send a separate stream to every platform. A cloud multistreaming service accepts one contribution feed and distributes it onward to the destinations you connect. Restream documents support for third-party streaming software, while Castr describes fanning a single encoder feed out to connected destinations. This can spare your local connection from having to carry a separate outgoing feed for every platform, though it does not remove the need for a reliable contribution feed or guarantee that each destination will behave alike.
The production feed and the destination broadcasts are different parts of the workflow. You may create the show in a browser studio, build it in OBS or another encoder, or use a service's cloud production tools. The service then passes the feed to YouTube and any other selected endpoints it supports. Features such as guest invitations, comments, recording, custom endpoints and playback on your own site are separate questions, not automatic consequences of sending one feed to several places.
This distinction matters if you are accustomed to a 24/7 channel. A scheduled devotional playlist or ambience loop is not necessarily the same job as a live, presenter-led programme. If you are deciding whether to run a persistent loop locally or elsewhere, the trade-offs in what a 24/7 loop really costs are a separate part of the decision. Multistreaming is most useful when the same live production needs to reach multiple destinations; it does not by itself turn a file into a continuous YouTube channel.
StreamYard for a browser-led studio
StreamYard is a candidate when you want to build the programme in a browser-led studio rather than maintain an encoder scene collection. Its vendor-authored material describes a browser studio and a camera and microphone feed distributed through the cloud. That kind of workflow can suit a presenter-led interview, a small organisation's weekly event, or a show where the person operating the broadcast wants production controls in the same place as the live session.
The trade-off is that the studio workflow is central. If you already have a carefully configured OBS or vMix production, first establish whether you want to replace that setup or connect it to the service in a way the current plan supports. A browser studio is not automatically a better fit for a continuous visual loop or an encoder-heavy programme with existing scenes, audio routing and automation.
StreamYard's Help Center says multistreaming is available on paid plans only and lists 3 destinations on Core, 8 on Advanced and 10 on Business. These are plan-specific figures from the Help Center reviewed for this article, not a promise that the same limits will remain in place; verify the current plan details before committing. StreamYard also explains that destinations are selected when creating a live stream and that services without a direct integration may be connected by custom RTMP when they accept an RTMP feed. See its multistreaming plan and destination guidance before treating a destination count as proof that your particular account can connect the service you need.
For a show with rotating guests, production convenience may matter more than the raw count. Check current guest, seat and destination terms directly rather than assuming they are included in the same way across plans. If you are planning a YouTube programme with several speakers, the practical preparation in how to stream with multiple people on YouTube can help you identify who needs to speak, appear on screen and operate the broadcast before choosing a studio.
Restream for an encoder relay or Studio
Restream is a candidate for two different workflows: use an encoder such as OBS and add its cloud relay, or produce with Restream Studio in a browser. That flexibility is useful if your requirements vary by programme, but it also means you should decide which workflow you are evaluating. The Studio's guest and production controls are not the same consideration as an encoder relay that forwards an existing programme.
Restream's Help Center describes streaming from software such as OBS as well as using its browser-based Studio. Its documentation also describes cross-platform chat, shared workspaces, Upload & Stream for recorded video, and Clips. Those tools may be useful to a team that wants to manage more than the outgoing feed, but check the current documentation and plans for the parts you intend to use. A feature listed for the service generally does not tell you by itself which plan includes it.
Restream's pricing FAQ says its free tier lets users select 2 destinations from 30+ social channels, and its pricing page describes custom RTMP and support for third-party streaming software. The figures and plan details can change, so check the official Restream pricing page at the time you decide. Its FAQ says Studio streaming in 1080p is supported on the Professional plan; it also says Restream does not impose a resolution restriction when you use custom software, although the destination platform may impose its own. These are separate statements: the resolution accepted or shown at YouTube is not settled by the relay's own policy alone.
The encoder-relay arrangement can be a sensible fit if you have already built a stable OBS production and want to avoid maintaining a separate outbound stream to each site. It will not solve problems in the encoder's source, scenes or connection automatically. If YouTube's control room reports no incoming data, start by checking the encoder-to-YouTube path and stream key rather than assuming that a multistreaming provider is the cause; this guide to diagnosing a YouTube Live “no data” warning addresses that specific failure mode.
Castr for encoder-led needs
Castr is a candidate when the show is encoder-led and the requirements include custom outputs, an embedded player, stream-health monitoring or a larger destination count. Its product page describes a single RTMP, SRT or WHIP encoder feed sent to connected destinations, as well as direct integrations including YouTube. This is a different emphasis from choosing a browser studio first: you should expect to bring or arrange the production feed rather than choose Castr solely for browser-based guest production.
Castr lists 6 destinations on Starter, 10 on Standard, 20 on Premium and 30 on Ultra and Events. It says those limits count across the account, and that higher counts may be available on request. The same page documents custom RTMP and SRT outputs, an embedded player, monitoring and analytics; it lists transcoding and adaptive bitrate on Premium and higher. Treat each figure and feature as a claim to verify on Castr's multistreaming page when you assess the current account-wide limit and feature bundle. A published maximum is useful only if it covers your actual endpoints and is available on the plan you are considering.
For example, a local news loop might need YouTube plus a station website player and a partner endpoint. In that case, the ability to use a custom output or embed playback may be more important than having a browser studio. A devotional channel that only needs YouTube and one social destination may have no reason to pay for a larger destination capacity or additional controls. Match the tooling to the broadcast, not the most expansive plan description.
Monitoring also has a practical boundary. A service may expose stream-health information, but you still need to decide who will look at it and what they will do if a feed or destination fails. If your current problem is a YouTube warning about a changing video resolution, troubleshooting that stream-health warning is more targeted than comparing destination counts. Monitoring is valuable when it informs a response plan, not simply because a dashboard exists.
Compare destinations and production workflow
The table summarises the reviewed vendor evidence. Counts and plan names below come from official vendor pages reviewed for this article; they are not fixed service guarantees. Recheck plan terms before purchase, and confirm that the specific channels you need are supported rather than relying on a headline total.
| Service | Production path described by vendor | Destination evidence reviewed | Consider it when |
|---|---|---|---|
| StreamYard | Browser-led studio with cloud distribution | Help Center lists 3 destinations on Core, 8 on Advanced and 10 on Business; multistreaming is paid-plan-only | You want a browser studio and a modest set of destinations |
| Restream | Third-party encoder such as OBS, or browser Studio | Pricing FAQ says free users may select 2 from 30+ social channels; paid counts vary by plan | You want a relay for an existing encoder or the choice of Studio and encoder workflows |
| Castr | Encoder feed or Castr cloud production | Product page lists 6 on Starter, 10 on Standard, 20 on Premium and 30 on Ultra and Events, account-wide | You need encoder-led distribution, custom outputs, embedded playback or documented monitoring |
A destination count is only one constraint. A “platform” total may include services you do not use, while a custom RTMP connection may work only if the receiving destination accepts that kind of feed and you have the required credentials. Confirm whether the destination is a direct integration or a custom endpoint, whether it needs separate permissions, and whether the service's plan counts it towards a limit.
Also distinguish production controls from distribution. A browser studio may make it easier to bring a guest into a live show, while an encoder gives you continuity with a scene-based workflow you have already configured. Restream documents both routes; StreamYard's positioning is browser-led; Castr's cited page centres on an encoder feed or its cloud production. Those are meaningful differences, but none settles whether the individual product suits your operator, content or destination mix.
Check endpoints, player and monitoring needs
Write down every intended destination before comparing plans. Include YouTube, any social channels, a website player and any partner or internal endpoint. For each, note whether you need a direct integration or a custom RTMP or SRT output, who supplies the stream credentials, and who has permission to authorise the connection. A channel being named on a vendor page does not establish that your account is already connected or that every plan supports it.
If you want viewers to watch on your own website as well as YouTube, ask whether the service provides an embedded player and how that player fits your page. Castr explicitly describes an embedded player in the evidence reviewed here. The sources used for this comparison do not establish that an owned-site player is a focus for StreamYard or Restream, so do not assume equivalent playback functions across the three. If your website is central to the project, test that journey separately from the YouTube stream.
For a feed that must continue while the operator is busy, specify what “monitoring” should tell you. Do you need to know that the encoder is connected, that the service is forwarding, or that a destination is receiving the broadcast? Those are distinct points in the chain. A monitoring feature may help diagnose one stage without proving that viewers at every destination can watch or hear the programme.
YouTube's own encoder requirements are another independent check. Use the current official YouTube Help guidance on encoder settings, bitrates and resolutions for the account and stream you are preparing. This article does not supply bitrate, codec, resolution, frame-rate, latency or eligibility figures: they should not be inferred from a relay provider's policy or a remembered setup. If your stream is mostly a still image and music, YouTube-specific output choices still deserve separate attention; this guide to bitrate for a static-background music stream is relevant to that kind of channel.
Choose by operating requirements
Start with the operator's preferred production path. If you want to bring a camera, microphone, guests and graphics together in a browser-led session, evaluate StreamYard's studio workflow and verify the current destination plan. If your scenes and capture sources already live in OBS, test Restream as an encoder relay and decide whether its Studio tools matter to your team. If you need an encoder feed with custom RTMP or SRT outputs, an embedded player or documented monitoring, include Castr in the evaluation and verify the plan bundle.
Next, map the failure points that matter overnight or during a live event. A relay can reduce the need for your local encoder to send one independent feed per destination, but it does not eliminate source, encoder, internet, account-authorisation or destination failures. Decide who can see a warning, what they can inspect, and whether there is a fallback broadcast path. For a 24/7 channel, a plan based on an occasional human studio operator may be a poor match for a pre-recorded loop unless the workflow supports the way you actually publish.
Finally, compare the cost only after you have a workflow and endpoint list. Do not pay for a destination ceiling you will not use, and do not choose a low listed count if it excludes a required custom endpoint or feature. The published figures here describe the reviewed vendor pages, not a promise of what a later checkout will show. Confirm current pricing, limits, support terms and cancellation conditions directly with each provider.
When the main issue is repeatedly maintaining a file-based YouTube loop from a personal computer, that is a different operating problem from producing and relaying a live show. StreamNeo can remove that particular need to leave your own computer running for the file-based broadcast; it is YouTube-only and does not replace a ing workflow to several social destinations. Choose it only if that distinction matches your channel.
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 cloud multistreaming send one upload to every platform?
It generally accepts one contribution feed and distributes it to connected destinations, rather than asking your local encoder to send a separate feed to each one. Destination support, custom endpoint requirements and plan limits still vary, so confirm each target before you build the workflow.
Which service works with OBS?
Restream documents support for third-party streaming software such as OBS, and Castr describes an encoder-feed workflow. StreamYard is the browser-led studio candidate in this comparison; check its current documentation if you intend to connect an external encoder instead of producing in the studio.
Are the destination counts permanent?
No. The figures in this article are the plan limits stated on vendor pages reviewed for this comparison, and providers can change plans or bundles. Recheck the current official page and checkout details for the plan you intend to use.
Can a multistreaming relay guarantee my YouTube stream is healthy?
No. It can distribute a contribution feed, but it cannot guarantee that your source, encoder, account permissions, connection or YouTube destination will remain healthy. Check YouTube's current official requirements and decide how you will detect and respond to interruptions.