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<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">Hi John<br>
</span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">If you say “programmed”.
What is coming to my mind is hardware. Do you have a sound
card or video card
involved which helps rendering? I don’t know if there are some
temp files in
Kdenlive who stores some intermediate steps?</span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-US"
lang="EN-US">MLT, QT,
FFMPEG? I don’t know the software routing from pressing play
until something happens.</span></p>
</p>
Eugen<br>
<br>
<div class="moz-cite-prefix">Am 28.08.2018 um 20:10 schrieb johnar1:<br>
</div>
<blockquote type="cite"
cite="mid:nnrIblSdeu5F_Po24EcGhGWzV-Pz2uT7T-OgFelbQnc4C16zRSsghuB3UOLlfv1UWnMf5K9_KBNfFQ5DB9seXEmiv2VUzh3P2fdmzrPMvmE=@protonmail.com">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<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"
moz-do-not-send="true">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
<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">
<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;
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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;
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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%;
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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"
moz-do-not-send="true">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;
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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"
moz-do-not-send="true"><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"
moz-do-not-send="true">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"
moz-do-not-send="true"><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"
moz-do-not-send="true">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"
moz-do-not-send="true"><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"
moz-do-not-send="true">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"
moz-do-not-send="true"><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"
moz-do-not-send="true">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"
moz-do-not-send="true"><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"
moz-do-not-send="true">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>
</blockquote>
<br>
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