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Grainy Video on Kdenlive

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generalfliphax
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Grainy Video on Kdenlive

Thu Jun 30, 2022 8:12 am
Hi There!

I wanted to Export a video on Kdenlive with HD 1080p 30 FPS. However, when the video has finished rendering, it results in a grainy composition where gradients didn't render well. I tried changing the default settings and enabling "Proxy Clips," but nothing helped. Does anyone have the solution to the problem?

Thanks! :)

Here's a screenshot between the grainy video and original. https://drive.google.com/file/d/1uQLbRg ... sp=sharing
berndmj
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Re: Grainy Video on Kdenlive

Fri Jul 01, 2022 5:58 pm
What OS and version of kdenlive are you using? Any effects on the clip(s)? What are the quality settings for the render? Which render profile did you select?
Proxy Clips are only good for editing and faster preview and should not be used for rendering as they are scaled down versions of the originals.


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zolder
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Re: Grainy Video on Kdenlive

Sun Jul 03, 2022 11:53 am
And what codec did you use to render?
generalfliphax
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Re: Grainy Video on Kdenlive

Tue Jul 05, 2022 9:43 pm
Here are my Settings:
----------------------------------------------------------------------------------------------------------------------------------------------------------
Computer and Model: Dell XPS 8940 Intel Core i5-10400 CPU, 8 GB RAM, Nvidia GeForce GTX 1660 Super
OS: Windows 10 Build 21H2
Kdenlive Version: 22.04.2
Clip Effects: None
Quality Settings: HD 1080p 60
Render Profile: MP4 H264/AAC 1920x1080 16:9 60 fps with Interlaced Scanning
Proxy Clips: Enabled
Render Codec: libx264

Hope this helps! :)

-Best regards
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zolder
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Re: Grainy Video on Kdenlive

Thu Jul 07, 2022 3:32 pm
generalfliphax wrote:Here are my Settings:
Render Profile: MP4 H264/AAC 1920x1080 16:9 60 fps with Interlaced Scanning


This seems a good one. That's the one i always use, without problems. and which works on most gear and internet.
Although 60fps is rather high. Mostly 30fps is enough, and mostly standard for video (cams and such).
So it could be that your rendering 30fps vids to 60fps which can give your problem?

No experience with kdenlive on win, so there i can't help you.
generalfliphax
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Re: Grainy Video on Kdenlive

Sun Jul 10, 2022 5:56 am
Hmmm... I went back to Kdenlive and tinkered with the settings a little bit, and noticed that my quality settings were varied upon the Rate Control dropdown. Some produced low quality video, while some produced the desired quality of my video. I eventually sticked with the CBR (Constant Bitrate) option, since, weirdly enough, produces the highest and crisp quality of video when undergoing some rendering tests. I will try to dig in if there is a bug with the other bitrate options in Kdenlive, other than that, I'll update if there's another problem with the bitrate options. For now, I will stick with CBR. Thanks for the help though, I really appreciate it :D Also, there are no changes to video quality when rendering from 30fps to 60 fps, so the frame rate wasn't the culprit :P

-Best Regards
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zolder
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Re: Grainy Video on Kdenlive

Thu Aug 18, 2022 3:30 pm
generalfliphax wrote:Also, there are no changes to video quality when rendering from 30fps to 60 fps, so the frame rate wasn't the culprit :P

-Best Regards


Nah. Frame rate doesn't make the quality. It can only ruin it if to low.
Your eye is fooled from about 20 fps, so everything above will be 'good quality'.

And even then the to low frame rate gives a stuttering view, where the quality of what you see can still be high.
In general: Frame rate ≠ quality


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