This forum has been archived. All content is frozen. Please use KDE Discuss instead.

How to convert fullHD to HD without visual quality decrease

Tags: None
(comma "," separated)
jantoth
Registered Member
Posts
2
Karma
0
Hi there,

I am recording videos in full HD with 30fps.

When converting with KDENLIVE to 720p the is
significant really significant visual quality loss.

I have been fighting with that issue for weeks and finally
I decided I will continue recording with fullHD.

However, when I upload videos to my provider
he only supports 720p so all my half year work is pointless
because all the videos ale bury because of this conversion.

https://github.com/xjantoth/microservice/blob/master/images/kdenlive-forum.png

Can anyone help

-Jan
User avatar
bartoloni
Moderator
Posts
1510
Karma
4
OS
you have to use directly ffmpeg...

ffmpeg -i original1080.mp4 -vf scale=-1:720 -c:v libx264 -crf 18 -preset veryslow -c:a copy destination720.mp4
jantoth
Registered Member
Posts
2
Karma
0
Thanks for the response, I tried it however, the result is the same.
There is not much improvement, I am wandering whether it is actually possible
to convert this.

I can't get is because I am doing from something with high quality
to someting which is a little bit [b]less quality[/b] and result is terrible.
User avatar
bartoloni
Moderator
Posts
1510
Karma
4
OS
try reducing CRF value to 0... (this is the best quality...)

Code: Select all
ffmpeg -i original1080.mp4 -vf scale=-1:720 -c:v libx264 -crf 0 -preset veryslow -c:a copy destination720.mp4


Bookmarks



Who is online

Registered users: Baidu [Spider], Bing [Bot], Google [Bot], Yahoo [Bot]