- Turn on Syphon in Isadora in stage set up
In OBS, on the bottom left, there is the box for sources.
Click on the + button to bring up the source option
You should see Syphon in the pop up menu.
When you select Syphon, then you need to set the source e.g. Isadora Stage 1.
Your syphon feed should appear in the left hand preview window. Use CUT or the slider to bring the preview into the output pane.
You might need to check the Settings (Bottom RIght tab) for the quality of the recording.
Click on Record. It will default to the movie folder.
Best of luck with it.
screenshot-2026-02-21-at-09.52.33.pngscreenshot-2026-02-21-at-09.52.56-resized.png
Oh I realised something from that,
I put it as a QuickTime movie, that makes the file 15 gb for just 5 min.
Ill try also record to an ssd... for now since I need to figure out the obs and first show is in half an hour:)
Thanks
[ANSWERED] Challenge recording 1 hour, tomorrow
With 55gb left, you might get a warning that you are low on space if your drive is a Terabyte, since this would put you below 5% drive space pretty quickly.
Assuming you are using the MP4 / H264 Record Stage Setup - Codec:
🎥 Typical 1080p H.264 Bitrates
| Quality Level | Bitrate (Mbps) | Approx File Size (1 hour) |
|---|---|---|
| Low (YouTube compressed / conferencing) | 5 Mbps | ~2.2 GB |
| Standard consumer camera | 8 Mbps | ~3.6 GB |
| High quality DSLR / mirrorless | 12 Mbps | ~5.4 GB |
| Very high quality | 20 Mbps | ~9 GB |
| Visually lossless / mezzanine | 40 Mbps | ~18 GB |
The Data Rate can be set in the Record Stage Setup dialog, via the 'Max Data Rate' selector.
You really shouldn't need to use anything higher than 12 Mbps.
Here are some specs on recording transfer sppeds:
🎥 Typical 1080p 30fps H.264 Bitrates
| Quality Level | Bitrate (Mbps) | Required Write Speed |
|---|---|---|
| Low (streaming) | 5 Mbps | ~0.6 MB/s |
| Standard | 8 Mbps | ~1 MB/s |
| High quality | 12 Mbps | ~1.5 MB/s |
| DSLR quality | 20 Mbps | ~2.5 MB/s |
| Very high | 40 Mbps | ~5 MB/s |
Your external USB drive (assuming SSD) is likely fast enough for the job.
I use Black Magic Designs Disk Speed Test to verify my drive speeds for such things.
It is included in the FREE Black Magic Desktop Video software: Blackmagic Design Downloads
It sounds like you have a lot of items on your HD. 1hr of HD video is about 10GB and your buffer is probably getting overloaded etc.
If you can free up some space, you might have more chance of getting a record but nonetheless, try the OBS/wirecast route and hopefully it will record a better copy without stressing your remaining space.
eamon
hi Eamo,
Thank you! I am on a mac studio M1. Today I tried to record directly in Isadora with 55gb space left. After about 25 minutes I got a message that there was not enough space to proceed. So I am a bit surprised and try to find solutions.
It is only ghe visual I need.
All the best
Eva
Hi Eva
Without knowing much more and in the interim of awaiting better minds to come along, would it make sense to pipe your isadora feed into OBS or similar?
Maybe by making the recording there it might lessen the size and strain on your computer? You can achieve this via syphon or NDI?
It would probably be better to record direct to your internal drive versus an external one too.
Without a greater picture of your machine specs and patch, that is what I would try first. I have never recorded directly in Isadora.
If you wish to have the audio too, you need a piece of software called, BlackHole. This will help route the audio internally to OBS etc. I believe you still need this app or similar to route audio for recording.
My 2cents
Hope this helps.
Eamon
hello,
I need to record 1 hour in HD quality, a live show in isadora, but it seems it consumes a lot of space. Can somone help me how to do that? Can I maybe place it somehow on my ssd drive that has usb ( not usb c)?
All ghe best Eva
[ANSWERED] Pythoner Virtual Environments Not Showing Up
@drpjm
Did you close and re-open Isadora? It won't remap the python environment until that is done.
I assume you have watched these tutorials: Using the Pythoner Actor – Do More in Isadora with Python - YouTube
NOTE: Python is not initialized in Isadora until a Pythoner actor is added to the project. You can update the 'environment activation file' and restart Isadora, and the Python Virtual Environment setting under the Help menu will appear GRAYED OUT & (Awaiting Activation) until the Pythoner actor is added to the project.
[ANSWERED] Pythoner Virtual Environments Not Showing Up
I am new to Isadora and I am working to integrate some Python code using the Pythoner actor. The concepts and practices I saw in the Youtube tutorials and the documentation make sense. However, I am having trouble with the creation of Virtual Environments on Mac OS and Isadora 4.
I created a virtual environment using the provided Apple script and the script to activate it. However, Isadora says "Awaiting Activation". I attached the screenshot for the view in Isadora as well as the current ActiveVirtualEnvironmentPath.txt file. Am I missing a setup step?
Thanks!
