[Cin] Cannot render above 60FPS

Pierre autourduglobe p.autourduglobe at gmail.com
Sat Jun 19 20:59:21 CEST 2021

I don't know of any commercial cinema or television network that shows 
productions at more than 60 frames per second.

Yes, I have worked in the past with cameras that could run up to 2000 
frames per second and nowadays I imagine there are cameras that can run 
even faster than that. But those blazing fast speeds were always 
intended to create slow motion in a normal broadcast at 24 (cinema) or 
29.97 (NTSC television) frames per second.

I suppose it's possible that those working in special effects or 
animation may eventually want to maintain a high frame rate throughout 
their production process.

Likewise, it is possible that the scientific community or museums and 
other special facilities that present non-standard video works may 
decide to use much higher frame rates than those used in film or television.

A sector that was developing a lot before COVID... was the video game 
competitions in front of large audiences, in big auditoriums equipped 
with giant screens. Can we imagine that they will eventually want to 
broadcast image montages at the same high speed as those of the games in 

I think having the ability to render at high bitrates is a good thing 
for Cinelerra-GG. But renders that deviate from the usual broadcast 
possibilities should be clearly marked or classified.


Le 21-06-19 à 04 h 05, Igor BEGHETTO via Cin a écrit :
> What I know 72, 90, and 144 are not standard frame rates. I don't 
> remember for 100 fps, seems to me not.
> 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

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