On Saturday, June 19, 2021, Igor BEGHETTO via Cin <cin@lists.cinelerra-gg.org> wrote:

What I know 72, 90, and 144 are not standard frame rates. I don't remember for 100 fps, seems to me not.

ST 12-3:2016 - SMPTE Standard - Time Code for High Frame Rate Signals and Formatting in the Ancillary Data Space 

Abstract:This standard specifies time code formats with the frame counts 72, 96, 100 and 120 and the frame count 120 with drop-frame compensation. This standard also specifies a transmission format for conveyance of the time code and frame count in the ancillary data space of serial digital interfaces.

https://ieeexplore.ieee.org/document/7438725

but try to get also all pdfs from 

https://www.smpte.org/free-standards-and-publications

while you can..  downloading pdfs from tbis site seems to fail me probably due to my location (may be i have them on my main machine, but my machine is 1700km away and offline) 

 

I think only standard frame rates should be taken into consideration by Cinelerra-GG, otherwise what is a standard for?
If an User uses a no standard frame rate She/He may have problem to play it somewhere.
If You, like me, think that Cinelerra-GG is a professional program (I would say mostly Prosumer) only the standard frame rate should be there to avoid future/next problem with users (and broadcast). And could it happen for Video/Audio sync?
IMHO, all of you can make a screencast with screen recorder at any (?) frame rate you want but when you use a NLE the Format Project should use the standard frame rates.
What I know Cinelerra-GG may work with any source frame rate but the Project Format should be conformed to standards.
The check on the frame rate that Cinelerra-GG performs are just for that.
Sorry if I think so.

I would like to know by Pierre, Sam, RafaMar and other Professionl Video Editor what they think about it.

Thanks!
IgorBeg

 

Il 18/06/2021 15:46, Andrea paz via Cin ha scritto:

cool! Did you tried to import resulted files back into Cingg and try to proxy them?)

Rendered again at 144 fps ==> OK; closed CinGG; start CinGG ; load the
file mp4 at 144 fps (1080p) ==> OK
Proxy a 1/2 default (mpeg) ==> error:

    int FFMPEG::open_encoder(const char*, const char*):
    check_frame_rate failed
/home/paz/video_editing/prova/CinGG-std-test.proxy2-mp4.mpeg
    proxy: failed=1 canceled=0
    int ProxyRender::create_needed_proxies(int):
    Error making proxy.
    proxy: failed=0 canceled=0

(The proxies are 2 because in the timeline I had created a clip and
then brought it back into the timeline as a nested clip, appended to
the previous edit.)

Created a proxy in mov.mov (1/2) ==> OK
Done various editing with proxy/original ==> OK
Deleted the proxy ==> OK