[opensuse-marketing] openSUSE conference videos ready for post production
Moin, not all but a good bunch of videos we put to http://community.opensuse.org/conference/ as .dv files. Now we're looking for helping hands for post production of the videos. To ease the download pain you should use a download manager like Down Them All or aria2 DigitalTom created a how to page a while ago: http://en.opensuse.org/Recording_openSUSE_Talks He volunteered also to upload the files to tube.o.o when ready. Thanks for your support M -- Michael Löffler, Product Management SUSE LINUX Products GmbH - Nürnberg - AG Nürnberg - HRB 16746 - GF: Markus Rex -- To unsubscribe, e-mail: opensuse-marketing+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-marketing+help@opensuse.org
Hello, (just noticed that I sent this reply to Michael only on monday...) Am Freitag, 2. Oktober 2009 schrieb Michael Loeffler:
not all but a good bunch of videos we put to http://community.opensuse.org/conference/ as .dv files. Now we're looking for helping hands for post production of the videos. To ease the download pain you should use a download manager like Down Them All or aria2
DigitalTom created a how to page a while ago: http://en.opensuse.org/Recording_openSUSE_Talks He volunteered also to upload the files to tube.o.o when ready.
I downloaded the Legal_Juergen_Weigert_2009.09.20_08-16-47.dv video and noticed that it is (technically) stereo, but with only one channel having sound (the talk) and the other channel just being silent. This means you hear sound only on one (of two) speakers/earphones etc. Is there a way to fix this (drop the silent channel and switch to mono)? kdenlive doesn't seem to have such a feature, or I didn't find it. Note 1: I have no idea if this affects all videos, but there are chances - I guess the camera setup didn't change too much at the conference ;-) Note 2: This is not a promise to do the post production ;-) Regards, Christian Boltz --
How deep can subprojects be nested? I think we have no limit of deepness, at least no one reached it until now ;) [> Paul Elliott and Adrian Schröter in opensuse-buildservice]
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Is there a way to fix this (drop the silent channel and switch to mono)? kdenlive doesn't seem to have such a feature, or I didn't find it.
Google for: ffmpeg stereo to mono Something like (I didn't test this): # ffmpeg -i inputvideo.dv -ac 1 outputvideo.dv -- John Lange www.johnlange.ca -- To unsubscribe, e-mail: opensuse-marketing+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-marketing+help@opensuse.org
ffmpeg trick worked. I guess it's better to run it on finished videos
as a last step, just to fix the sound.
kdenlive has "Mono to stereo" audio effect, but looks like it's doing
the opposite thing.
I'm looking at Infrastructure_Klaas_Freitag_2009.09.17_13-03-26.dv.
And the sound quality in not perfect, not to say worse. There is a
lot of those glitches. In most cases sound disappears for up to a
second and then comes back. This must have something to do with that
radio mic.
Christian, do you hear something like that on
Legal_Juergen_Weigert_2009.09.20_08-16-47.dv? I'm still downloading
it..
-Denis
On Wed, Oct 7, 2009 at 10:48 AM, John Lange
Is there a way to fix this (drop the silent channel and switch to mono)? kdenlive doesn't seem to have such a feature, or I didn't find it.
Google for: ffmpeg stereo to mono
Something like (I didn't test this):
# ffmpeg -i inputvideo.dv -ac 1 outputvideo.dv
-- John Lange www.johnlange.ca -- To unsubscribe, e-mail: opensuse-marketing+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-marketing+help@opensuse.org
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Hello, on Samstag, 10. Oktober 2009, Denis Kulagin wrote:
ffmpeg trick worked. I guess it's better to run it on finished videos as a last step, just to fix the sound.
Yes, it works - but I have the impression that it reduces the volume a bit. After some googling, I found out that mplayer / mencoder can do this without reducing the volume: mplayer -af pan=1:1:1 Legal_Juergen_Weigert_2009.09.20_08-16-47.dv (mencoder syntax should be similar, use -o file to define the output file) For the records: the above command is based on http://lists.mplayerhq.hu/pipermail/mplayer-users/2008-March/072387.html
I'm looking at Infrastructure_Klaas_Freitag_2009.09.17_13-03-26.dv. And the sound quality in not perfect, not to say worse. There is a lot of those glitches. In most cases sound disappears for up to a second and then comes back. This must have something to do with that radio mic.
Christian, do you hear something like that on Legal_Juergen_Weigert_2009.09.20_08-16-47.dv?
Fortunately not. It "only" has some background noise. (Can this noise be filtered out somehow? Audacity has a good noise filter, but AFAIK it can't work on videos.) BTW: the mencoder way seems to be the better one, because the "empty" channel comes with some noise. Completely dropping this channel therefore saves us 50% of the noise ;-) Regards, Christian Boltz --
Man möge mich korrigieren. Du hast es nicht anders gewollt ;-) Jaaaa, gibs mir! ;-) [> Christian Boltz und Johannes Kastl in suse-linux] -- To unsubscribe, e-mail: opensuse-marketing+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-marketing+help@opensuse.org
participants (4)
-
Christian Boltz -
Denis Kulagin -
John Lange -
Michael Loeffler