This forum has been archived.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

[Begginers] problems with rendering H.264 mp4

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

I am new to Kdenlive, so please don't get too upset with question:)
I have captured some videos with Gopro Hero 4 with following settings: 1080p 60fps (NTSC)
For my project in Kdenlive I made a profile HDV with 1080p 60fps and edited video.
Then, I tried to render it with various options (e.g. Vimeo H.264, MPEG-4 and others) in hope to produce slick sharp video, just the same quality as my source files out of my gopro. However the quality of the product video (rendered) is either very degraded (its probably quality loss due to compression for some formats, I am very new to all this) or its sharp and nice but video is "laggy" (motion of image is disturbed) or something wrong with framerate (video kinda much slower).

So guys, could you point how could I take my 1080p 60fps videos and make the movie out of it with the same quality as the every single source file? I mean, how should I set up the profile and what are the render settings should I choose?

Thank you! 8)
capslock
Registered Member
Posts
699
Karma
4
OS
Hi there,
which render settings did you use? Did you set the bitrate manually or did you try the h.264 profiles as shown here: https://userbase.kde.org/Kdenlive/Manua ... e_Bit_Rate

If set manually it may be a good idea not to go below e.g. youtube's or vimeo's suggestion for 1080p60 videos. Or give the h.264/AAC high profile with default settings a try. Quality depends strongly on the codec and the bitrate, but the higher the bitrate (or the lower the h.264 quality setting when using profiles) the better the quality will be.
User avatar
ttguy
Moderator
Posts
1152
Karma
6
OS
Your "laggy" results are probably because those renders have produced files with a video bit rate that is too high for your play back device to handle.
straizys
Registered Member
Posts
2
Karma
0
Thanks for reply guys!

which render settings did you use? Did you set the bitrate manually or did you try the h.264 profiles as shown here: https://userbase.kde.org/Kdenlive/Manua ... e_Bit_Rate


No, I only tried all default settings, as I am pretty new to this, so I just assumed that one of the default settings would suit my needs.

The bitrate in H.264 as default is set to be:
Video 12000
Audio 384
User avatar
ttguy
Moderator
Posts
1152
Karma
6
OS
What version of Kdenlive are you on ? Because ver 0.9.10 which is the latest has the nice new feature of variable bit rate encoding.
https://userbase.kde.org/Kdenlive/Manua ... e_Bit_Rate
This is what capslock linked to. You give kdenlive a number for the video quality you want and it encodes it to that quality. It will produce a video where the bit rate varies depending on how detailed and how much action is happening in a given scene in the video.
If you use that option then the default setting it offers up will probably be good.

For example the File Rendering > MP4 group of render profiles has "H.264/AAC High Profile" and that offers up 3 different quality options to choose from - 18, 20 and 25.
Try each of those and see if one of those works for you.
User avatar
ttguy
Moderator
Posts
1152
Karma
6
OS
On the other hand - your issue might be to do with frame rate like you say.
You project profile is 60fps. But it is the render profile that makes the difference here. I don't think any of the default rener profiles encode at 60fps.

You need to figure out what melt options create video at 60 fps. https://userbase.kde.org/Kdenlive/Manua ... Parameters and create a custom render profile
https://userbase.kde.org/Kdenlive/Manua ... r_Profiles
gps
Registered Member
Posts
9
Karma
0
Hi Straizys, did you find a profile that solved the problem? I have the same issue despite having tried a lot of rendering profile settings.
There is a similar case treated here: viewtopic.php?f=272&t=123161&p=321471&hilit=kdenlive+gopro#p321471
Perhaps is better to treat it there instead.
regards


Bookmarks



Who is online

Registered users: Bing [Bot], blue_bullet, Google [Bot], Yahoo [Bot]