A webinar is a closed room with a registration form. A live stream is an open broadcast anyone can join. It sounds like a detail, and that single difference decides your budget, your gear list and whether you end the day with contacts or with a view count. Here is when each format makes sense, how many people actually turn up, and what the two really cost.
Key takeaways
- A webinar sits behind registration, holds a limited room and produces contacts. A live stream is public, scales without limit and produces reach.
- Demandsage's 2026 roundup of webinar statistics puts live attendance at 35 to 45 % of registrants. Plan your capacity from that number, not from your sign up count.
- The same roundup reports an average viewing time of 42 minutes for a sixty minute webinar. Which is why the important part belongs in the first half.
- You can run a webinar yourself. A live stream that has to represent a brand needs at least two cameras, a proper audio feed and someone directing.
- Budget: a simple webinar runs from nothing to a few hundred euros. A one day conference stream with two cameras typically starts at 1,500 euros.
- If you want a contact list, do not run an open stream. If you want reach, do not hide the content behind a form.
What actually separates a webinar from a live stream?
Not the technology. Whether the viewer has to fill something in to get through the door. A webinar is an interactive room: registration, a limited audience, chat, questions, polls, and a presenter who can see who is connected. A live stream is a broadcast: it goes out on YouTube, LinkedIn or Facebook, anyone clicks and watches, and nobody knows anyone by name.
Everything else follows from that. A webinar hands you a list of people who raised their hand on a topic, and that list can be worked. A live stream hands you viewership numbers, a recording that keeps working in search, and no idea who watched.
The mix up usually goes one of two ways. A company wants contacts and pays for a large public broadcast where nobody registers. Or it wants reach and buries a good talk behind a form that only thirty existing clients ever complete.
When does a webinar make sense?
When the goal is a conversation with specific people rather than a view count. Webinars work for technical topics where the audience arrives with questions, for product training for existing clients, for partner onboarding, and anywhere you need to know who is on the other side.
Plan with real numbers. Demandsage's 2026 webinar roundup puts live attendance at 35 to 45 % of registrants, so a hundred people on screen means roughly two hundred and fifty sign ups. The same source reports an average of 42 minutes watched out of a sixty minute session, which means the closing point you are most proud of reaches less than half the room.
So build the running order backwards: the most valuable thing in the first fifteen minutes, questions in the middle, the sales part at the very end where only the genuinely interested are left. And send the recording to everyone who registered, including the people who never showed. That group is usually larger than your live audience.
When does a live stream make sense?
When the event has value for someone who has never heard of you. A conference, an awards evening, an opening, a panel with guests who bring their own audience. There a registration form is an obstacle, not a filter.
Technically it is a different league. A webinar is one person with a decent microphone. A stream from a stage is two or three cameras, an audio feed off the sound desk, a director, a backup connection and someone watching the chat. We broke down what happens inside such a broadcast in our piece on what a live stream really needs. This StreamYard walkthrough shows how the format is set up on the platform side.
One thing organisers realise too late: an online viewer has no coffee break. What works in the hall as a twenty minute pause is the end of the broadcast online. Either put something else in the gap or accept that half the audience will not come back.
What does it cost?
The gap is wider than most people expect. Rough numbers from our own projects.
- Webinar, in house: a platform from nothing to around 100 euros a month, plus a decent microphone and a light. The largest cost is the presenter's time and the preparation.
- Webinar with production support: a few hundred euros for direction, graphics and having someone handle the technical side while you talk.
- Live stream from a stage: for a one day event with two cameras, sound from the desk and a director, prices commonly start around 1,500 euros and rise with cameras, language feeds and recordings to edit.
Do not forget the line item everyone skips: connectivity on site. Hotel wifi is not a broadcast link. Ask for a wired connection on a dedicated line, or budget for a bonded mobile backup. We covered the same ground for conferences in our conference video checklist.
When should you run neither?
When you have no audience for the topic and hope the broadcast will attract one. It will not. Webinars and live streams are distribution formats, not acquisition channels. Without a list to invite or a guest who brings their own crowd, you are paying for a broadcast watched by twelve people.
We once streamed a conference where the online audience was smaller than the crew. The fault was not technical. The invitation went out four days ahead. Registrations cluster close to the date, but the invitation still has to be live at least two weeks out for anyone to have something to click.
The second case: when the content has no live value. If the talk will not produce a discussion and nobody will ask anything, record it as a video and skip the stress of going live. A recorded piece can be recut, corrected and used for a year. A broadcast gets one attempt.
Frequently asked questions
Can a webinar also go out publicly on social?
It can, most platforms handle both at once. Just decide which goal comes first. Run the same content publicly and behind a form at the same time, and most people skip the form, so the contact list you did this for never materialises.
What is the right length?
For a webinar, 45 minutes including questions. For an event broadcast, as long as the programme runs, but with cutaways and graphics between blocks. Going past an hour only works for training where people came for a specific skill.
Do we need a studio for a webinar?
No. You need a quiet room, a microphone close to the mouth and light in front of the face. The camera is the least important of the three. A studio pays off once you broadcast regularly or have several people in frame at once.
What happens to the content afterwards?
Send the recording to registrants within 24 hours, turn the audience questions into an article, and cut the best five minutes into short social pieces. An event that ends on the day it happens is the most expensive content you can make.
If online event duty has landed on your desk and you are not sure whether it is a webinar or a broadcast, write to us through contact or look at what our production team does. Tell us what you expect from the event, how many people you can invite and what the budget is, and we will tell you which format fits. For planning numbers, the webinar attendance benchmarks roundup is a reasonable starting point.
