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Add new rendering options... (forced yuv420p)

User avatar bartoloni
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i'm asking to add some new rendering options...
i'm using primarly the Mpeg4-DIVX rendering.. and i'm having CONTRAST ISSUES...
nothing that can't be fixed forcing the yuv420p... but maybe just add a small FLAG that add this to MLT parameters: mlt_image_format=yuv420p

Image

using standard presets all videos from my chinese drones/glasses/cams.. become bad contrasted: (probably just a bad conversion during rendering...)

Image

Last edited by bartoloni on Thu May 07, 2020 8:26 am, edited 2 times in total.
User avatar bartoloni
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i no longer require this change.. on latest builds+melt+ffmpeg forcing YUV420p i have a "greenish" rendered output...
jefbo
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Hi guys, may I reactivate Bartoloni's request of adding an option forced yuv420p?

I found a quite significant difference between the original video from my camera and the rendering in MP4 with standard profile "MP4 the dominating format". In the rendering is the colours are not so vivid, and there is a lack of contrast. I would like to upload 2 pictures showing the difference I am talking about, I don't see a way to upload it here, sorry.

Trying to minimize such "deterioration" I downloaded Bartoloni's profile "MP4 Dominant YUV420p". A short test shows that with this profile colours and contrast of the original are maintained. But unfortunately, when I try to render the whole video with this profile, the rendering crashes at 40-50% with the message:
Code: Select all
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fe5d0085240] st: 0 edit list: 1 Missing key frame while searching for timestamp: 1001

Don't know if this error might have something to do with the fact that on the timeline I have MP4 clips with YUV420 Video 8 bit and JPG images in RGB?
User avatar bartoloni
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yep.. maybe can be usefull to add some FLAGS on rendering GUi to force different color format...

 
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