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ISO recording on m1 max

I would like to know if there is any technical limit in order for me to ISO record all my sources:

1 sony a6600 at 4k, 24fps going through a camlink 4k

1 sony a6100 at 4k 24fps going through a HD60s+

1 screen that has 3440x1440 resolution, but I want to record only a portion of it, a 1920x1080 section of it

1 external microphone going through the same camlink 4k

1 external microphone going through a scarlet solo.

And VERY VERY important, the ISO recorded files should be in HEVC and a format readable by QuickTime and Final Cut Pro x.

Is it possible @craigs ?

 

Thanks! the software is expensive so I prefer to know this before jumping into it :)

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  • CraigS ☝️

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view

    Wirecast Pro trial is free with no time limit.
    Wirecast doesn't support HEVC ISO recording because the system resources are significant. Consider that one may need to record multiple sources. That's often the intent of ISO recording. Given that ISO records are often used in post-production the goal is easy to edit files such as Apple ProRes. x264 is supported with user-controlled data rate for file size control but the file is still an easier-to-edit form of x264. HEVC is not a good codec for live recording. It's taxing even when using non-real-time recording. Even an M1 Max could be brought to its knees in various circumstances. The computer hardware would have to support multiple live simultaneous 8-bit HEVC encodes (and 10-bit would be even more severe which is what one might want for post-work).

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  • The m1 max have HEVC hardware encoders. I’m able to record 4 sources, at 4K 20Mbps without any issue and the quality of the video is great. Everything is achieved using ffmpeg and the file size are very reasonable. So I’m not buying the  “it’s not a good codec for live recording”, for my scenario is perfect. 
    The Wirecast demo is free for 30 days, but the iso recording feature is disabled, it says that it’s only active for active pro users. 

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  • Anyway, is there a way for me to access a demo of the pro version of Wirecast so I can test the iso recording feature?

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  • This is what I'm talking about. So I can't test it.

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view
    Nicolas Schurmann said:
    The m1 max have HEVC hardware encoders. I’m able to record 4 sources

     M1 Max has two HEVC hardware encoders and that would not be adequate given the potential needs in Wirecast. The developers have discussed this. Keep in mind Telestream is an encoder company (not just Wirecast) so the developers have a lot of expertise in this area.

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  • Thank you CraigS !, I would reconsider using HEVC in Wirecast, vmix has this option, so does OBS studio and other streaming softwares. I'll contact desk support. Thank you!

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view
    Nicolas Schurmann said:
    vmix has this option,

     Windows handles this differently than Mac and Mac Arm processors differently than Intel and NVIDIA assisted acceleration which is Windows only.
     

    Nicolas Schurmann said:
    OBS studio

     OBS doesn't do multiple live streams.

    Again, given the way Wirecast works and the nature of hardware accelerated encoding and the potential number of simultaneous ISO and Live sources, there would be a number of points of failure.

    On the other hand, Wirecast supports Apple Pro Res encoding on Windows

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  • I see, maybe there is a way to limit how many times the hardware encoder has been used? Or enable it only for recording? Again I was successful to use it with ffmpeg, but I was only recording and I recorded 3 streams and two where 4K. This is a feature that I would definitely use. If there are many points where Wirecast could fail then probably I would use it just for recording, and h.264 for streaming or so. 

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      • CraigSModerator
      • Telestream Desktop Forum Moderator
      • CraigS
      • 4 mths ago
      • Reported - view

      Nicolas Schurmann Bringing up this request to the developers for HEVC encoding give hardware acceleration limits. Investigation WIRE-20590

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view
    Nicolas Schurmann said:
    I see, maybe there is a way to limit how many times the hardware encoder has been used?

     Yes, the developers have talked about how they'd have to do that. That would be tricky. You don't want to hit a fail point while you're doing anything live whether recording or streaming. The limits also change depending on Mac model or GPU series on Windows. 

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