Proxy view to real time playback?

[Juandi Aznar]

Sorry but can't find a way to playback my footage at proxy/low res to get real time playback. When R3D files I know how to but with for example .mov?

Thanks!

[Matthias Aderhold]

Hi Juandi,

it pretty much depends on the codec the video of your Quicktime file is compressed with.
Some are more intensive on the CPU, others are less.
However, from my experience even laptop CPUs (somewhat recent) are perfectly able to playback e.g. 4K ProRes.

Playback at lower resolution is possible, if you would use Cineform as your Quicktime codec of choice.
If you load that into SCRATCH, you'll see a dropdown similar to the one you know from RED Raw and can playback the file at a lower resolution.


Cheers,
Mazze



> Juandi Aznar <juandiaz...@gmail.com> hat am 5. November 2018 um 13:46 geschrieben:

>
>
> Sorry but can't find a way to playback my footage at proxy/low res to get
> real time playback. When R3D files I know how to but with for example .mov?
>
> Thanks!
>

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[Dmitry]

It remains to convert video to proxy, work this way, and then do relink to the original video. If source video has another container, then repack it to mov.

понедельник, 5 ноября 2018 г. в 16:36:50 UTC+3, Mazze:

[Dmitry]

Manual:
https://www.assimilatesupport.com/akb/KnowledgebaseArticle50408.aspx
"How to playback R3D files in realtime without a RR installed.

• Use Proxy modes.
• On version 5.2 - go to the Player - Process - General and choose the Proxy that plays fine. The realtime playback depends on the hardware you have."

"
I don't think if I don't have an r3d file, I can't use this great feature - "proxy mode".
Unless it was kicked out after the fifth version of the program.

I could never figure out what "Player" is in this program. probably the surroundings of all the buttons around the viewport))) But apparently not, because the "process" button is not there. The General button is not there.

Maybe it is some kind of settings?

среда, 1 февраля 2023 г. в 10:43:47 UTC+3, Dmitry:

[Matthias Aderhold]

This is indeed a super old entry that does not fully apply anymore. 

With RED RAW you have two modes: one for playback, one for rendering out. 

You can set the debayer to half res for playback and full res for rendering. 

You‘re not rendering actual proxies, just selecting a proxy (playback) resolution to ensure smooth playback when working with the shots. 

Cheers,

Mazze

Mazze Aderhold

Freelance Engineer

Am 01.02.2023 um 09:12 schrieb Dmitry <esta...@gmail.com>:

Manual:

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[Dmitry]

I'll try to translate it into my own language))
I will have just a decoded picture on the left and a decoded and processed picture on the right, if I have worked with any color tools on it?

Right?

среда, 1 февраля 2023 г. в 11:42:43 UTC+3, Mazze:

[Vlademir Lisboa]

Hi Dmitry!

Go to R3D Menu, click on Resolution Tab and select the RES to playback

The realtime depends on your hardware configuration, but using 1/4 or 1/8 Res should work fine.

Give it a try! See attached screenshot.

Thanks a lot!

   Vlade Lisboa
=================
 Assimilate Inc Support
www.assimilateinc.com
   +55 11 98455 9063
    Skype: vladelisboa

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[Dmitry]

Thank you, Vlade ;)
no, I just found a variant under r3d and thought it could be used for 4k as well - regular 4k... quicktime (rec.709).
There will be no options under 709. Well, actually there aren't any.

And then - this option only helps with recalculation. Not for decoding. If in gop h264 stream long distances, it is not convenient to rewind - there will be jerks. Distance between keyframes if big. reference frames in stream, or you need mov container, which has its own index on frames.
It is not about resolution.
Also in big pictures you try to set reference frames far away from each other to compress 264/265 stream better.

среда, 1 февраля 2023 г. в 19:14:00 UTC+3, vlade lisboa:

[Dmitry]

It is not a problem to make a proxy - then cheat by conforming the whole thing. But it's a bit of a hassle.

среда, 1 февраля 2023 г. в 19:21:40 UTC+3, Dmitry:

[je...@assimilateinc.com]

Really unclear what your issue is in all of this, and what it is you want??

 

The options for decoding r3d are just that…nothing to do with h.264/265 and GOP…

People decode at lower res for many reasons:  they do not have system to playback full res in realtime or they do not want to send big files through conform/editing process…they then can decode to full res in finishing etc…

 

Are you trying to stream R3d files?

Is this a real project and you are not able to do something?

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[Dmitry]

It's just that maybe I didn't fully understand your advice.

If I need to enable proxy to display some h264 large video, do I need to "transcode" it to r3d beforehand by some miracle, then follow the advice for r3d?

среда, 1 февраля 2023 г. в 20:34:48 UTC+3, je...@assimilateinc.com:

[je...@assimilateinc.com]

This is all about h.264 format?

First you cannot encode to R3d..only Red cameras can do that.

You need/want proxies of h264 for what??

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[Dmitry]

Not proxy files h264), but proxy (prores proxy) files based on the source h264, which would be comfortable to produce scrolling playhead, more accurately selecting the right moments.
It's just a comfort.

Well, like in Davinci Resolve, when you right-click on the desired clip in the bin and command to generate a proxy file for such a clip, so it would be more convenient to work.

It's elementary stuff. Does no one knows about it who works with Scratch?

среда, 1 февраля 2023 г. в 20:44:30 UTC+3, je...@assimilateinc.com:

[je...@assimilateinc.com]

Generally Scratch does not have a Proxy workflow specifically…and to be honest has not been a big demand because you can playback most all formats in SCRATCH fast…

So converting h264 files to prores…unless they are 4k and above and your computer cannot handle the playback not sure why…

And then convert back to h264 for delivery?

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[Dmitry]

Well, as far as I'm concerned, playback is one thing, but scrolling with the same playhead is quite another.
Playback, of course, will not slow down.
But, since it's not in demand by a lot of people, then what's to say.

среда, 1 февраля 2023 г. в 20:53:12 UTC+3, je...@assimilateinc.com: