Re: audio normalize

2019-07-05 Thread j...@dodin.org

Le 05/07/2019 à 00:27, Daniil V. Kolpakov a écrit :


Again, that depends on the task, it won't help you if you mix the audio
from the several clips in a complicated way.


as said in my first post, it's not the case. This audio is live take 
with only one (stereo) mike, not a studio one with multi track...


jdd

--
http://dodin.org


Re: audio normalize

2019-07-05 Thread j...@dodin.org

Le 04/07/2019 à 23:22, Steven Boswell II a écrit :
On Thursday, July 4, 2019, 2:44:57 PM MDT, j...@dodin.org  
wrote:
 > why use an other editor when kdenlive (seems to) already have the 
tool, apart if you say the tool is broken


kdenlive doesn't have a level-compressor, and it also doesn't give you 


I know this

Feel free to resist this good advice if you want to, but you're only 
making your work more difficult.

We're just trying to help.



but you don't help, not answering on subject.

I know all what you say, but it's too long for me to make it right now, 
I simply don't have the time to fine tune the audio track - the original 
band sound is already not that good, for reason out of my reach.


thanks for your help anyway

jdd


--
http://dodin.org


Re: audio normalize

2019-07-04 Thread Daniil V. Kolpakov

On 04.07.2019 23:44, j...@dodin.org wrote:

Le 04/07/2019 à 22:03, Daniil V. Kolpakov a écrit :


Edit the project in Kdenlive using unnormalized video clips you have,
then render using audio-only profile to a .wav file, then normalize the
file using an audio editor (for example the Audacity as suggested), then
open up the kdenlive project again, add an empty audio track, put the
edited wav to this track right from the beginning of the timeline, then
mute or remove original sound track. I do it all the time (although
using Ardour not Audacity).


two things:

* why use an other editor when kdenlive (seems to) already have the 
tool, apart if you say the tool is broken


Well it's not broken per se, just incomplete. It's a well known drawback 
that Kdenlive currently lacks a master bus, for example. This means that 
while you can drop a compressor on a track you cannot make it compress 
the mix of, say, a video track with the voice on it plus backing track 
with music, thus you cannot guarantee there is no clipping of the audio 
in the end.



* there is a much simpler workflow

when I happen to have a source already cut (for example if I made only 
short clips), I use this script


...
#!/bin/bash

rep="mp4-hd" ;
mkdir  $rep ;

for a ; do
 b=`echo "$a" | cut -d'.' -f1` ;
 ffmpeg -i $a -af loudnorm -ar 44100 -b:v 12000k -movflags faststart 
$rep/$b.mp4 ;

done
exit


notice the "loudnorm" option.


Again, that depends on the task, it won't help you if you mix the audio 
from the several clips in a complicated way. Also, I'd rather -c:v copy 
for the ffmpeg and do the whatever processing with reencoding of the 
audio before cutting in Kdenlive if the indention would be to cut with 
the video files where audio tracks would be pre-processed somehow.


Re: audio normalize

2019-07-04 Thread Steven Boswell II
On Thursday, July 4, 2019, 2:44:57 PM MDT, j...@dodin.org  
wrote: > why use an other editor when kdenlive (seems to) already have the 
tool, apart if you say the tool is broken

kdenlive doesn't have a level-compressor, and it also doesn't give you an 
accurate view of your audio waveform, in case there are other issues with your 
audio that need inspection and correction.Use the tool that's appropriate for 
the job.There's a reason that Adobe After Effects is a separate program from 
Adobe Premier.

Feel free to resist this good advice if you want to, but you're only making 
your work more difficult.We're just trying to help.

-Steven
  

Re: audio normalize

2019-07-04 Thread j...@dodin.org

Le 04/07/2019 à 22:03, Daniil V. Kolpakov a écrit :


Edit the project in Kdenlive using unnormalized video clips you have,
then render using audio-only profile to a .wav file, then normalize the
file using an audio editor (for example the Audacity as suggested), then
open up the kdenlive project again, add an empty audio track, put the
edited wav to this track right from the beginning of the timeline, then
mute or remove original sound track. I do it all the time (although
using Ardour not Audacity).


two things:

* why use an other editor when kdenlive (seems to) already have the 
tool, apart if you say the tool is broken


* there is a much simpler workflow

when I happen to have a source already cut (for example if I made only 
short clips), I use this script


...
#!/bin/bash

rep="mp4-hd" ;
mkdir  $rep ;

for a ; do
b=`echo "$a" | cut -d'.' -f1` ;
	ffmpeg -i $a -af loudnorm -ar 44100 -b:v 12000k -movflags faststart 
$rep/$b.mp4 ;

done
exit


notice the "loudnorm" option.

https://trac.ffmpeg.org/wiki/AudioVolume

jdd


--
http://dodin.org


Re: audio normalize

2019-07-04 Thread j...@dodin.org

Le 04/07/2019 à 17:15, Steven Boswell II a écrit :
On Wednesday, July 3, 2019, 2:28:42 AM MDT, j...@dodin.org 
 wrote:

 >Can somebody point me to a "normalize" doc (the wiki is empty)?

In my opinion, non-linear video editors like kdenlive are best used to 
composite several different clips together, not perform major processing 
on them.


I use it mostly to cut the 4 hours track in clips a song long (or a 
medley). Right now I only use "normalize" as effect. I used to do more 
like on this (2011) clip:


http://dodin.org/piwigo/picture.php?/139382-20110617_01_rolling/category/4812

but I'm aging and if I still use two or three cams to make the take, I 
rarely mix them (it's mostly as backup)




If you've got an audio file of someone singing, I would recommend fixing 
it first in audacity, then importing the fixed clip into kdenlive.


I know I can do this, but it's a lot of works. Asking kdenlive to make 
HD clips from the source on a decent machine (i7, 16Gb ram, ssd) takes 
around three time the gig time (and the gig is around 4 hours), only 
counting machine time :-(



First, you'll want to level-compress it, not merely normalize it.
I recommend Chris' Dynamic Compressor, which can be found at 
https://github.com/theDanielJLewis/dynamic-compressor-for-audacity .

You can put the compress.ny file into your Audacity plugins folder.
Normal audio clips can use the default compress ratio of 0.5.
For speech and vocals, I tend to boost that to 0.75 for better results.

Hope this is helpful.


sure it is, thanks

jdd


--
http://dodin.org


Re: audio normalize

2019-07-04 Thread Steven Boswell II
   On Wednesday, July 3, 2019, 2:28:42 AM MDT, j...@dodin.org  
wrote: >Can somebody point me to a "normalize" doc (the wiki is empty)?

In my opinion, non-linear video editors like kdenlive are best used to 
composite several different clips together, not perform major processing on 
them.
If you've got an audio file of someone singing, I would recommend fixing it 
first in audacity, then importing the fixed clip into kdenlive.First, you'll 
want to level-compress it, not merely normalize it.I recommend Chris' Dynamic 
Compressor, which can be found at 
https://github.com/theDanielJLewis/dynamic-compressor-for-audacity .You can put 
the compress.ny file into your Audacity plugins folder.Normal audio clips can 
use the default compress ratio of 0.5.For speech and vocals, I tend to boost 
that to 0.75 for better results.
Hope this is helpful.
-Steven


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theDanielJLewis/dynamic-compressor-for-audacity

Chris's Dynamic Compressor plugin for Audacity. Contribute to 
theDanielJLewis/dynamic-compressor-for-audacity de...
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