Need help: mimoLive sometimes doesn't recognize mp4 files half way through

[Oliver_Boinx]

Hi @kohki.shikata Thanks for digging into this and reporting your findings!

@kohki.shikata

NDI Video source is also same behavior. I used ProPresenter 7.5 with NDI Syphon. I added video source NDI video and set to Placer layer variant. Once it behavior was OK, but after some layer sets changed, NDI video source has never came back. Just black screen appeared.

You should be able to simply use the NDI source in mimoLive to get the output from ProPresenter. If ProPresenter has Syphon and runs on the same machine, you can simply use a Syphon source.

@kohki.shikata

It means that the cause is not for that movie files and it’s for mimoLive’s video switching function doesn’t work well at M1, doesn’t it?

mimoLIve doesn’t “work well” on M1. This means that it works to a certain degree. Your document might simply push too hard. The internals for this problem are quite complicated, so it isn’t an easy solution on our end. Your information may help us to get to the bottom of this.

@kohki.shikata

And I would like to say another point, when many times push the layer live button or layer set recall button, sometime media file sources and NDI video source doesn’t show up, but the webcam Logicool C920n’s source always fine to show up. It means UVC is OK, another one is not OK? Hmm, I have no idea.

That is interesting.

@kohki.shikata

By the way, I paid attention to the render performance monitor. It shows always that “Free GPU memory: 15MB of 10.67GB”. Is this correct? I wonder it’s not at all.

I don’t think it is correct. We ask the OS for a value of the free space on the GPU and this is what is reported. However, it doesn’t take into account data that is taking up space but no longer needed. This data will simply be overwritten when new data needs to be loaded into the graphics memory. Also, this feature doesn’t take into account the shared memory situation of the M1. It also may be that the OS doesn’t report correct values for Rosetta 2 processes.

@kohki.shikata

Besides, the video source from ProPresenter with looped footage via NDI syphon plays little bit jerky. I think it might be cause for that NDI and NDI Syphon doesn’t optimized at M1.

I’m quite interested in learning how this is wired. Is ProPresenter running on the same computer? If so, it wouldn’t need NDI Syphon, you could simply use a Syphon source in mimoLive. This will greatly reduce the processsing needed, as you don’t need to encode NDI and then decode it. Also, I think ProPresenter supports NDI output directliy, so if it is on another computer, you wouldn’t need NDI Syphon either as you should be able to simply use the NDI Source in mimoLive.

[Oliver_Boinx]

@hutchinson.james_boi

It must be a huge project for them as they have to rewrite an awful lot of the code I believe. My understanding is the current version of mimoLive still uses quartz composer heavily which is deprecated by Apple for a good while now.

I wish them the best of luck and speed.

It is quite a job. Thanks for the kind wishes!