<div>Hey Eugen,<br></div><div><br></div><div>yeah I am already trying to combat the pops by adding fade ins and fade outs at the end of every clip, which helps sometimes. <br></div><div><br></div><div>But whenever there is a Slide transition, I can't here a pop during playback, but the timeline indicator will halt/stop for a millisecond during that transition period in the timeline, and that is exactly where the pop occurs in the rendered output.<br></div><div><br></div><div>And it seems that nothing I do, in terms of switching different audio codecs, containers, even moving the clips or the transition where the pop occurs, solves the problem. Once the pop is there, it will continue to come up as if it was programmed at that specific spot.<br></div><div><br></div><div>The only thing that seems to help is lowering the framerate by changing to a different project profile, but that completely messes the audio up, putting it out of synch etc.<br></div><div><br></div><div>I will try going back to Ubuntu 16.04, maybe it's something about Alsa/Pulseaudio on 18.04. Really at the end with my math here.<br></div><div><br></div><div>Thank you for your patience, I really appreciate it<br></div><div><br></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton">Sent with <a target="_blank" href="https://protonmail.com">ProtonMail</a> Secure Email.<br></div></div><div><br></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div> On August 28, 2018 7:06 PM, Eugen Mohr <eugen.mohr@gmx.net> wrote:<br></div><div> <br></div><blockquote type="cite" class="protonmail_quote"><p><br></p><p><br></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal; background-position: 0% 0%; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto auto; background-origin: padding-box; background-clip: border-box;"><span style="background-color:white" class="highlight"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">Hi John</span></span></span><br></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal; background-position: 0% 0%; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto auto; background-origin: padding-box; background-clip: border-box;"><span style="background-color:white" class="highlight"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">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.</span></span></span><br></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal; background-position: 0% 0%; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto auto; background-origin: padding-box; background-clip: border-box;"><span style="background-color:white" class="highlight"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">To avoid this make an audio
crossfade. On 1 audio track a fade out and on the other a fade
in.</span></span></span><br></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal; background-position: 0% 0%; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto auto; background-origin: padding-box; background-clip: border-box;"><span style="background-color:white" class="highlight"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">Audio crossfade seems still
on the wish list. <a class="moz-txt-link-freetext" href="https://forum.kde.org/viewtopic.php?f=270&t=127698#p340370">https://forum.kde.org/viewtopic.php?f=270&t=127698#p340370</a></span></span></span><br></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal; background-position: 0% 0%; background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto auto; background-origin: padding-box; background-clip: border-box;"><span style="background-color:white" class="highlight">Eugen <span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size"></span></span><span style="font-size:12pt" class="size"></span></span><br></p><p><br></p><div><br></div><div class="moz-cite-prefix">Am 28.08.2018 um 16:54 schrieb Steve
Brodie:<br></div><blockquote type="cite"><div name="messageBodySection" style="font-size: 14px;
font-family: -apple-system, BlinkMacSystemFont, sans-serif;"><div>Hi
John, <br></div><div><br></div><div>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?<br></div><div><br></div><div>Steve<br></div><div><br></div><div><br></div></div><div name="messageReplySection" style="font-size: 14px;
font-family: -apple-system, BlinkMacSystemFont, sans-serif;"><div>On
28 Aug 2018, 13:00 +0100, johnar1 <a class="moz-txt-link-rfc2396E" href="mailto:johnar1@protonmail.com"><johnar1@protonmail.com></a>, wrote:<br></div><div> <br></div><blockquote type="cite" style="margin: 5px 5px; padding-left:
10px; border-left: thin solid #1abc9c;"><div>Hi, Eugen!<br></div><div><br></div><div>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.<br></div><div><br></div><div>Yes sir, I use Lubuntu 18.04 and Kubuntu 18.04.<br></div><div>I just checked and the clips are ususally 44.1khz 16bit.<br></div><div><br></div><div>The only way I can get rid of all pops is if I render
with a 25FPS profile.<br></div><div>50FPS, 59.9 and 60FPS all produce the same pops.<br></div><div><br></div><div>It's driving me so insane omg, I can't sleep anymore.<br></div><div><br></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user
protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton">Sent with <a target="_blank" href="https://protonmail.com">ProtonMail</a> Secure Email.<br></div></div><div><br></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div>On August 27, 2018 8:58 PM, Eugen Mohr <a class="moz-txt-link-rfc2396E" href="mailto:eugen.mohr@gmx.net"><eugen.mohr@gmx.net></a> wrote:<br></div><div><br></div><blockquote type="cite" class="protonmail_quote" style="margin: 5px 5px; padding-left: 10px; border-left:
thin solid #e67e22;"><p><br></p><p><br></p><p><br></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:normal"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">Hi John</span></span><br></p><p><br></p><p><br></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:normal"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">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.</span></span><br></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:normal"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">Do you have this
problem at playback or after you have rendered the
video out?</span></span><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:12pt" class="size"></span></span><br></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:normal"><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size">BTW: you are on
Linux?</span></span><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:12pt" class="size"></span></span><br></p><div><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:10pt" class="size"></span></span><span style="font-family:"Arial", "sans-serif"" class="font"><span style="font-size:12pt" class="size"></span></span>Eugen<br></div><div><span style="font-size:10pt" class="size"></span><span style="mso-ansi-language:EN-US" lang="EN-US"></span><br></div><p><br></p><div><br></div><div class="moz-cite-prefix">Am 26.08.2018 um 22:28 schrieb
johnar1:<br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid #3498db;"><div>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.<br></div><div><br></div><div>Is there a solution for this problem apart from
converting every audio track to 48khz?<br></div><div>Switching the 60FPS profile to 25FPS and rendering
the audio produces no clicks, but the audio has multiple
blank parts and is unusable.<br></div><div><br></div><div>Hope you can give a little more insight in this
matter.<br></div><div><br></div><div>Thanks a bunch!<br></div><div><br></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user
protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton">Sent with <a target="_blank" href="https://protonmail.com">ProtonMail</a> Secure Email.<br></div></div><div><br></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div>On August 21, 2018 8:53 PM, Eugen Mohr <a class="moz-txt-link-rfc2396E" href="mailto:eugen.mohr@gmx.net"><eugen.mohr@gmx.net></a> wrote:<br></div><div><br></div><blockquote type="cite" class="protonmail_quote" style="margin: 5px 5px; padding-left: 10px; border-left:
thin solid #d35400;"><p><br></p><div>Hi John<br></div><div><br></div><div>It comes 2 things to my mind:<br></div><div>- 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.<br></div><div>- 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.<br></div><div><br></div><div>Merlimau<br></div><div><br></div><div><br></div><div class="moz-cite-prefix">Am 21.08.2018 um 19:55
schrieb johnar1:<br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid #34495e;"><div>Hey Jean, thank you for that valuable info.<br></div><div><div><br></div></div><div>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.<br></div><div>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.<br></div><div>These audio pops only come up in the rendered
output, not during playback.<br></div><div>When I only render a small selected zone
surrounding the area where I know the pop will be,
it does not occur.<br></div><div>Only when I render the full project, they appear.<br></div><div>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.<br></div><div><div><br></div></div><div>The next thing I have noticed is that switching
the playback settings betwen SDL and RTAudio can
affect this issue as well.<br></div><div><div><br></div></div><div>As you know me now, I will now enter full testing
mode and report back to you with a more detailed
analysis.<br></div><div>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.<br></div><div><div><br></div></div><div>Anything else I should consider?<br></div><div><div><br></div></div><div>Best regards,<br></div><div><div><br></div></div><div>John<br></div><div><br></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user
protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton">Sent
with <a target="_blank" href="https://protonmail.com">ProtonMail</a> Secure
Email.<br></div></div><div><br></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div>On August 20, 2018 10:23 AM, Jean-Baptiste
Mardelle <a class="moz-txt-link-rfc2396E" href="mailto:jb@kdenlive.org"><jb@kdenlive.org></a> wrote:<br></div><div><br></div><blockquote type="cite" class="protonmail_quote" style="margin: 5px 5px; padding-left: 10px;
border-left: thin solid #2ecc71;"><div>On 18.08.2018 14:55, johnar1 wrote:<br></div><div><br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid
#9b59b6;"><div>Hey Jean and guys!<br></div><div><br></div></blockquote><div><br></div><div>Hello Johnar!<br></div><div><br></div><div><br></div><div><br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid
#9b59b6;"><div>I have uncovered a new problem with the
latest stable AppImage 18.04.1 release of
kdenlive which is very troublesome.<br></div><div><br></div><div>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.<br></div><div><br></div><div>I have also found that audio pops disappear
in the same footage disappear when switching
from SDL to RTAudio in the settings.<br></div><div><br></div><div>I am using a fresh install of Kubuntu 18.04
with updates and <br></div><div><div>Mlt and ffmpeg versions all from the
Appimage, so this has to be a thing in
kdenlive or maybe the latest Alsa / Pulseaudio
package?<br></div></div><div><br></div><div>I have tried some stuff suggested in forums
such as exporting only the audio in wav, but
without luck.<br></div><div><br></div></blockquote><div><br></div><div>I have just uploaded the 18.08.0 AppImage
containing the latest MLT. Could you check if the
problem still happens ?<br></div><div>It is available here:<br></div><div><br></div><div><a class="moz-txt-link-freetext" href="https://files.kde.org/kdenlive/release/kdenlive-18.08.0-x86_64.AppImage.mirrorlist">https://files.kde.org/kdenlive/release/kdenlive-18.08.0-x86_64.AppImage.mirrorlist</a><br></div><div><br></div><div>Thanks for your feedback.<br></div><div><br></div><div>Jean-Baptiste<br></div><div><br></div><div><br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid
#9b59b6;"><div>Any ideas?<br></div><div><br></div><div>Regards<br></div><div><br></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user
protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton"> <br></div></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div>On July 26, 2018 9:20 AM, Jean-Baptiste
Mardelle <a class="moz-txt-link-rfc2396E" href="mailto:jb@kdenlive.org"><jb@kdenlive.org></a> wrote:<br></div><div><br></div><blockquote type="cite" class="protonmail_quote" style="margin: 5px 5px; padding-left: 10px;
border-left: thin solid #e74c3c;"><div><br></div><div class="moz-cite-prefix">On 23.07.2018
00:21, Juku Trump wrote:<br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid
#1abc9c;"><div dir="ltr"><div>Hi,<br></div><div><br></div></div></blockquote><div><br></div><div>Hello Juku!<br></div><div><br></div><div>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.<br></div><div><br></div><div>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.<br></div><div><br></div><div>Best regards,<br></div><div><br></div><div>Jean-Baptiste<br></div><div><br></div><div><br></div><blockquote type="cite" style="margin: 5px 5px;
padding-left: 10px; border-left: thin solid
#1abc9c;"><div dir="ltr"><div>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.<br></div><div><br></div><div>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.<br></div><div><br></div><div>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 (<a href="https://phabricator.kde.org/D14281" class="gmail-phui-handle" style="text-decoration:none;color:rgb(19,108,178);font-family:"Segoe
UI","Segoe UI
Emoji","Segoe UI
Symbol",Lato,"Helvetica
Neue",Helvetica,Arial,sans-serif;text-align:left">D14281</a>) for
review.<br></div><div><br></div><div>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?<br></div><div><br></div><div>It would be helpful if someone would
suggest some other tasks which I could
start with.<br></div><div><br></div><div>Thanks,<br></div><div>Juku<br></div></div></blockquote></blockquote><div><br></div></blockquote></blockquote><div><br></div></blockquote></blockquote><div><br></div></blockquote></blockquote><div><br></div></blockquote></div></blockquote></blockquote><div><br></div>