Your content is a channel. Castr limits how much of it you can broadcast.

Elena had the rights, the catalogue, and the plan. Her company’s library ran to hundreds of titles and thousands of hours, sitting in storage doing nothing, and the case had become plain: turn the archive into a channel her viewers could watch inside the app, and a shelf full of content becomes a living part of the product. She picked a streaming tool that advertised 24/7 pre-recorded playout, started loading the schedule, and somewhere around the fiftieth file it stopped her. Fifty files per channel. Four hours per file. A loop that resets after thirty days. Uploaded one at a time, each re-uploaded in a required format before it would play. The channel was supposed to be the depth of her library. The tool could only put a thin slice of it on air, slowly, by hand.

That is not a pricing objection, and the difference matters. A price you can negotiate. A ceiling built into how the product is packaged, you cannot. Elena did not need a discount. She needed a platform whose limits did not stop at the edge of a small channel, because her whole reason to launch one was that her content was deep.

Who is building channels now

Elena is one of three kinds of teams doing the same thing in 2026, and it is worth seeing all three, because they are the reason this comparison is not really about one small channel. There are archive owners turning a back-catalogue into a channel people can watch around the clock. There are programmatic broadcasters who want to create, schedule and retire channels automatically, from code, not from a dashboard. And there are teams generating video with AI at a velocity no manual workflow was built for, who need somewhere to broadcast the firehose as a channel. Different inputs, one shared requirement: a playout that keeps up with your content instead of capping it. That single requirement is where the two platforms part ways.

The first wall: your content cannot keep up with the tool

On Castr, even the top plan caps a channel at 50 files, 240 minutes per file, and a loop that resets after 30 days. Worse than the numbers is the workflow behind them: files go up one at a time, each re-uploaded in a specific format, and a scheduled file that has not finished uploading simply will not play. For a creator looping a highlight reel that is fine. For a real archive it is a wall, and for a content pipeline it is a bottleneck.

This is exactly where a programmatic or AI-driven team feels it first. If your pipeline is producing dozens or hundreds of new videos a week, a manual, one-file-at-a-time uploader capped at fifty is not a limit you grow into, it is a wall you hit on day one. FastPix Cloud Playout does not cap the catalogue and does not make you feed it by hand. Content arrives through the application programming interface (API), at whatever rate you produce it, and goes onto a channel with no file limit, no duration limit, and no loop that expires. It runs two kinds of channels: looped channels, a continuous playback of a content set, ideal for shorter or simpler channels that are not on air around the clock, and scheduled channels, a programmed timeline with an electronic programme guide (EPG) for full 24/7 broadcast. You put your content on air, all of it, and program it like a channel rather than fitting it into a box.

The second wall: one channel

Every Castr plan, including the $749.99 tier, includes exactly one playout. A media company rarely launches one channel; it launches a genre channel, then a spin-off, then a short-run channel around an event. On Castr that means a sales call and a custom contract before you can run a second. On FastPix a channel is $99 a month, you add as many as you want, and a portfolio of channels is the normal case, not the exception.

The third wall: it only runs one way

Castr is a tool you operate by hand, in a browser, and its API is gated to higher plans, so automating playout is off the table for most users. That is fine if a channel is a thing a person sets up once. It is a problem if a channel is a thing your system creates.

FastPix gives you both doors to the same channel. There is a drag-and-drop dashboard with a programme-guide preview for the channels you would rather run by hand, and a full API, available on every plan from signup, for the channels your system runs for you. You decide per channel: schedule a boutique channel yourself in the browser, and let code spin up, fill and retire a hundred others. The programmatic broadcaster automates the lot, the AI-video team pipes new content onto a channel the moment it is generated, and the person who just wants to drag clips onto a timeline can still do exactly that. Same channel, two doors.

The channels people actually run

The pattern is easier to see in the concrete. These are the channels teams build off content they already have or produce.

Sports highlights and classic matches

Scheduled channel

A rights-holder turns a season of highlights, press conferences and classic games into a 24/7 channel with a real programme guide, and stands up a second channel for a single tournament, then takes it down when the tournament ends.

Genre, movie, kids and music channels

Scheduled or looped

A deep entertainment catalogue becomes an evergreen channel, a movie-genre channel, a kids or animation channel, a music-video loop, each one airing far more than fifty files and refreshed on a schedule rather than rebuilt every thirty days.

News, faith and regional loops

Looped or lightly scheduled

A regional broadcaster, a faith organisation or a community publisher runs a rolling loop of recent segments with lower-third overlays and a watermark, updated continuously as new content lands, without babysitting an uploader.

Programmatic and AI-generated channels

API-driven

A team producing video at scale, whether from a programmatic pipeline or an AI generator, pushes new content straight onto a channel through the API as it is made, and spins up short-run or personalised channels from code. The channel keeps pace with production because nothing is loaded by hand.

One platform, not a bolt-on

The deeper difference is what the channel is connected to. On Castr, playout is a feature inside a multistream tool. On FastPix it is one surface of a single video platform, so the same content that airs on your channel is already video on demand (VOD) in your app, can be cut into social clips by In-Video AI. You can mix video on demand and a real live feed inside one channel, dropping a live event into a scheduled lineup without standing up a second product, and place your own promo or ad content and overlays directly in the schedule. A channel stops being an island and becomes part of how your video already works.

You can see who is actually watching

Most playout tools hand you a stream and leave you guessing. FastPix reports server-side analytics on the channel itself: how many people are watching right now, where in the world they are, how many watched across the day, and which programme held them. Because it is measured server-side rather than inside a single player, it holds up across devices and even on the surfaces you simulcast to, and almost no playout provider gives you that by default. For a channel, that is the difference between broadcasting into the dark and running something you can actually read.

Where Castr is the right call

To be fair, and it matters: Castr is a good, affordable, reliable tool for the job it was built for. Churches and event teams run weekly streams on it happily, and a creator multistreaming to social platforms or standing up one simple looping channel will find it quick and cheap. This comparison is not that job. It is the broadcaster’s job: a deep catalogue or a fast content pipeline, a portfolio of channels, mixed live and on-demand, run through an API. When creating channels is something your business does at scale, the limits a weekly streamer never notices become the whole story.

The question is not which tool is cheaper for one small channel. It is which one keeps up when your content, and your channel count, start to move.

The two, side by side

Elena’s channel went live on a platform that could hold the whole archive, take new content through the API as fast as it arrived, and run a second and third channel beside it. Load the library. Program the schedule. Pipe in the new content. Run the next channel. Put it all on air. Modern video is what we do.