[Cin] Cannot render above 60FPS

[Andrew Randrianasulu]

On Saturday, June 19, 2021, Andrew Randrianasulu <randrianasulu at gmail.com>
wrote:

>
>
> On Saturday, June 19, 2021, Igor BEGHETTO via Cin <
> cin at 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)
>

additionally this camera apparently can record at 90 (and up to 200) fps

https://www.arri.com/en/learn-help/learn-help-camera-system/frequently-asked-questions/alexa-mini-lf-faq#accordion-83760




>
>
>>
>> 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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