Hi John
As I don’t see your timeline my guess is that this pops/clicks coming
from audio clipping. Meaning you reach 0dB or higher because you add one
audio on each other.
To avoid this make an audio crossfade. On 1 audio track a fade out and
on the other a fade in.
Audio crossfade seems still on the wish list.
https://forum.kde.org/viewtopic.php?f=270&t=127698#p340370
Eugen
Am 28.08.2018 um 16:54 schrieb Steve Brodie:
Hi John,
If it is only happening on transitions etc. could you do an export of
your audio only at 25fps, bring it back into Kdenlive as one
continuous WAV file and mute all the edited audio tracks and export
again at 60fps? Or does that introduce sync issues?
Steve
On 28 Aug 2018, 13:00 +0100, johnar1 <john...@protonmail.com>, wrote:
Hi, Eugen!
Yes, during problem there are no pops. They only appear in the
rendered output file. Another thing I have noticed is, that they only
happen at the beginning or end of overlapping clips when there is a
transition (Slide) or Volume Keyframable Effect involved.
Yes sir, I use Lubuntu 18.04 and Kubuntu 18.04.
I just checked and the clips are ususally 44.1khz 16bit.
The only way I can get rid of all pops is if I render with a 25FPS
profile.
50FPS, 59.9 and 60FPS all produce the same pops.
It's driving me so insane omg, I can't sleep anymore.
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On August 27, 2018 8:58 PM, Eugen Mohr <eugen.m...@gmx.net> wrote:
Hi John
I assume your audio file is not proper because FFMPEG can handle
44.1kHz. As Vincent Pinon mentioned: check if the audio is: 44.1kHz,
16 bit, WAV pcm (i.e. with the program MediaInfo). This is CD
standard. Maybe 24bits work as well.
Do you have this problem at playback or after you have rendered the
video out?
BTW: you are on Linux?
Eugen
Am 26.08.2018 um 22:28 schrieb johnar1:
Eugen, would you mind being a little more specific on what you
meant by 44.1khz audio and 60FPS video interfering with each other
over time, which causes clicks? I have searched everywhere on
google but could not find anything.
Is there a solution for this problem apart from converting every
audio track to 48khz?
Switching the 60FPS profile to 25FPS and rendering the audio
produces no clicks, but the audio has multiple blank parts and is
unusable.
Hope you can give a little more insight in this matter.
Thanks a bunch!
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On August 21, 2018 8:53 PM, Eugen Mohr <eugen.m...@gmx.net> wrote:
Hi John
It comes 2 things to my mind:
- Do you cut the audio at the zero point? In Audition (for
example) is a function that you can cut only at that point (when
the wave goes through zero) to avoid clicks.
- When audio frequency (i.e. 44.1kHz) and video frequency (i.e.
60fps) interfere each other after a time and from there you get
clicks. Video rendering is always video frequency driven. This
would be a FFMPEG problem.
Merlimau
Am 21.08.2018 um 19:55 schrieb johnar1:
Hey Jean, thank you for that valuable info.
I have tested the 18.08 version that you linked and unfortunately
the pops at the beginning of audio clips still occur, but I have
made an interesting discovery.
When I render the entire project, there are three pops at the
beginning of 3 clips, let's say at 01:23, 02:02 and 03:15 in the
time line.
These audio pops only come up in the rendered output, not during
playback.
When I only render a small selected zone surrounding the area
where I know the pop will be, it does not occur.
Only when I render the full project, they appear.
I have tried this with all three known audio pops that I have
spotted in the fully rendered project, and each time they
disappear when I only render a selected area around them.
The next thing I have noticed is that switching the playback
settings betwen SDL and RTAudio can affect this issue as well.
As you know me now, I will now enter full testing mode and report
back to you with a more detailed analysis.
I will compile the latest melt, ffmpeg and co in order to provide
a full report, but I will use the AppImage versio 18.8.0 which
you have suggested.
Anything else I should consider?
Best regards,
John
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On August 20, 2018 10:23 AM, Jean-Baptiste Mardelle
<j...@kdenlive.org> wrote:
On 18.08.2018 14:55, johnar1 wrote:
Hey Jean and guys!
Hello Johnar!
I have uncovered a new problem with the latest stable AppImage
18.04.1 release of kdenlive which is very troublesome.
Randomly, kdenlive will cause a "click" or "pop" sound at the
beginning of an audio track. I have observed that this happens
the most when two audio tracks are overlapping or a cut has
been made at the beginning of the a clip.
I have also found that audio pops disappear in the same footage
disappear when switching from SDL to RTAudio in the settings.
I am using a fresh install of Kubuntu 18.04 with updates and
Mlt and ffmpeg versions all from the Appimage, so this has to
be a thing in kdenlive or maybe the latest Alsa / Pulseaudio
package?
I have tried some stuff suggested in forums such as exporting
only the audio in wav, but without luck.
I have just uploaded the 18.08.0 AppImage containing the latest
MLT. Could you check if the problem still happens ?
It is available here:
https://files.kde.org/kdenlive/release/kdenlive-18.08.0-x86_64.AppImage.mirrorlist
Thanks for your feedback.
Jean-Baptiste
Any ideas?
Regards
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On July 26, 2018 9:20 AM, Jean-Baptiste Mardelle
<j...@kdenlive.org> wrote:
On 23.07.2018 00:21, Juku Trump wrote:
Hi,
Hello Juku!
Thanks a lot for your contribution and sorry for my late
reply. Your help is very welcome. I have now merged your
contribution. Regarding the tests, they need some work and
currently don't all pass and crash. We need to work on that.
Regarding other tasks, we really need to make a list of UI
improvements that could be done without too much knowledge of
the whole code. I will try to spend some time on it tomorrow,
help is welcome. But basically, if there is any UI related
thing that you want to improve, feel free to ask and we can
guide you if needed.
Best regards,
Jean-Baptiste
My name is Juku. I am a film hobbyist and I have been using
Kdenlive for about 8 years. As I'm also a developer, I
thought I would try my hand on contributing to Kdenlive.
I have mostly been a web developer so far, so I do not have
much experience with C++ (except for some tutorials) and I
have never done any Qt development.
I viewed the "Junior Jobs" section in Kdenlive Development
Information page and tried to fix #384511 for start ("New
project window does not fit to laptop screen (1366x768)").
Thanks to a hint by Christoph Feck in the comments below that
bug, I got it fixed and submitted the patch (D14281
<https://phabricator.kde.org/D14281>) for review.
Currently I'm having some trouble with the automated tests.
Should they succeed in their current state or are there some
known problems with them?
It would be helpful if someone would suggest some other tasks
which I could start with.
Thanks,
Juku