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Subject: Cinelerra digest, Vol 1 #2539 - 10 msgs
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Today's Topics:
1. Re: DVD longer than half an hour? (John Detwiler)
2. Question - Cinelerra CV (Laura Winston)
3. Re: questions (Kurt Georg Hooss)
4. Re: Re: Cinelerra YUV4MPEG render problems. (Daniel Harris)
5. Re: Question - Cinelerra CV (Sean M. Pappalardo)
6. Re: Question - Cinelerra CV (Scott C. Frase)
7. Re: Question - Cinelerra CV (Scott Serr)
8. Re: Question - Cinelerra CV (Daniel Jircik)
9. Re: Question - Cinelerra CV (Kurt Georg Hooss)
10. Re: Question - Cinelerra CV (Herman Robak)
--__--__--
Message: 1
Subject: Re: [CinCV] DVD longer than half an hour?
From: John Detwiler <[email protected]>
To: Cinelerra <[email protected]>
Date: Mon, 23 Feb 2009 07:48:31 -0500
Reply-To: [email protected]
Thanks for that. I suspected that bit-rate was a factor, too.
I don't actually specify bit rate anywhere; I've just followed the cookbook.
Bit rate is implicitly set, I expect, by the '-target ntsc-dvd' option on
ffmpeg;
and I suppose that the 'YUV4MPEG Stream' and 'ffmpeg pipe' settings determine
the bit rate that Cinelerra will generate.
So, now I need to figure out where to throttle the bit-rate without conflicting
with, or overriding, any other parameters that I should care about.
If 2-5 MB/s can produce acceptable video, that's certainly worth being told.
This puts me on a path! Thanks again!
(To be clear, my 'half-an-hour' estimate is based on actual experience using
high street '4.7 GB' media.)
On 2009-02-23 03:54, mskala wrote:
> On Sun, 22 Feb 2009, John Detwiler wrote:
> > 3. Standard DVD+R have 4.7 GB capacity, and hold about half an hour of
> > mpg's. My finished project (including 'feature' and 'extras') will be
> > at least 60-90 minutes altogether.
>
> DVD+R discs don't hold "half an hour" of MPEG video. They hold 4.7G, and
> how much time that is depends entirely on the bit rate. There isn't one
> standard bit rate that everybody uses. In order to fill a DVD in half an
> hour you must be using a bit rate of about 20Mbps, which is almost
> certainly *much* too high. Many decoders won't even operate properly when
> fed such a high-rate stream; I think the spec sets a maximum of about
> 10Mbps. Commercially published DVDs routinely fit several hours on a
> single regular-density 4.7G disc, with bit rates as low as 2Mbps. Try
> reducing your bit rate by a factor of at least five.
>
> Is it possible you're estimating based on the space consumption of
> uncompressed video, or the output of some kind of camcorder that does
> some other kind of compression, like DV?
>
>
--__--__--
Message: 2
Date: Mon, 23 Feb 2009 13:09:27 +0200
From: Laura Winston <[email protected]>
To: [email protected]
Subject: [CinCV] Question - Cinelerra CV
Reply-To: [email protected]
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**Hello,
I'm unable to work out from your website whether *Cinelerra CV* is able
to do all these:
* capture video from 2 live camcorders via firewire / DV feed.
* render the 2 camera feeds into a single image with a horizontal
split on the screen.
* the recording needs to happen in real time on the pc.
* allow recording straight onto HDD of the laptop
Is your product suitable for all the above?
If not, can you suggest an alternate product that may be suitable?
Thank you,
Laura Winston
The Negotiation Experts
[email protected] <mailto:[email protected]>
www.negotiations.com <http://www.negotiations.com/>
Tel: +61 1300 769 927
Fax: +61 (0) 2 8580 50 50
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<div class="moz-text-html" lang="x-western">
<div class="moz-text-html" lang="x-western"><strong></strong>Hello,<br>
<br>
I'm unable to work out from your website whether <b>Cinelerra CV</b>
is able to do all these:<br>
<ul>
<li>capture video from 2 live camcorders via firewire / DV
feed.</li>
<li>render the 2 camera feeds into a single
image
with a horizontal split on the screen. </li>
<li>the recording needs to happen in real time on the pc.</li>
<li>allow recording straight onto HDD of
the
laptop</li>
</ul>
Is your product suitable for all the above?<br>
<br>
If not, can you
suggest an alternate product that may be suitable?<br>
<br>
Thank you,<br>
Laura Winston<br>
<br>
The Negotiation Experts <br>
<a moz-do-not-send="true" href="mailto:[email protected]";
target="_blank">[email protected]</a> <br>
<a moz-do-not-send="true" href="http://www.negotiations.com/";
target="_blank">www.negotiations.com</a> <br>
Tel: +61 1300 769 927 <br>
Fax: +61 (0) 2 8580 50 50<br>
</div>
</div>
</body>
</html>
--------------030209060209050603010900--
--__--__--
Message: 3
From: Kurt Georg Hooss <[email protected]>
Organization: Schoepfung & Wandel
To: [email protected]
Subject: Re: [CinCV] questions
Date: Mon, 23 Feb 2009 16:09:45 +0100
Reply-To: [email protected]
bart, welcome to cinelerra.
my short answer to your questions:
1. yes it does run on ubuntu,
however i don't know about "special compilations".
my guess is "it should be possible to make it run"...
2. i have no idea what "magic bullet" is,
so maybe there is an effect plugin in cinelerra, i don't know.
however cinelerra is open-source community software,
so if you need a special feature, welcome to develop one
and share it with us.
cheers, georg
Am Friday 20 February 2009 15:33:14 schrieb Bartek:
> Hi,
> I'm interested in Your product, but I have few questions about it.
> 1. Will it run on special Ubuntu compilations (Playstation3 dedicated
> Ubuntu)
> 2. Will You include Magic Bullet Effect/any substitute?
>
> Regards
> Bart
>
> ----------------------------------------------------
> Rodzinne kibicowanie na Cracovii.
> Przy zakupie karnetu mecz Ekstraklasy ju=BF od 11 z=B3!
> Dzieci bezp=B3atnie, Panie za 1 z=B3!
> Wi=EAcej na: http://klik.wp.pl/?adr=3Dwww.cracovia.pl&sid=3D647
>
=2D-=20
dr. kurt georg hooss
schoepfung & wandel wissenschaftliche medienberatung
breite strasse 6-8, d-23552 luebeck
fon +49-(0)451-3003-474 (fax -333)
www.schoepfung-und-wandel.de
--__--__--
Message: 4
Date: Mon, 23 Feb 2009 23:23:55 +0000
Subject: Re: [CinCV] Re: Cinelerra YUV4MPEG render problems.
From: Daniel Harris <[email protected]>
To: [email protected]
Reply-To: [email protected]
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On Tue, Feb 10, 2009 at 1:11 AM, Ichthyostega <[email protected]> wrote:
> John Griffiths schrieb:
> > I hope Luminera will consider implementing a test suite to test the code
> > thoroughly.
>
> hehe, we don't just consider it ;-) we even write the tests before the
> implementation. But, actually detecting regressions within the video
> processing is not so easy as it might look at first sight.
>
> Hermann
>
>
>
Hello again
I have just been playing with cin and blender (what a great program that is)
and I was encountering the swscaler bug, and I found that if I rendered to a
slightly smaller size (in my case my video is 720x576 and i rendered to
640x480) all went well, but the surprising thing was when I played it in
mplayer it said it was 720x576? Not sure how that works but worth a try.
Why would swscaler be called when the video is not being scaled?
HTH Dan
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<br><br><div class=3D"gmail_quote">On Tue, Feb 10, 2009 at 1:11 AM, Ichthyo=
stega <span dir=3D"ltr"><<a href=3D"mailto:[email protected]";>p...@icht=
hyostega.de</a>></span> wrote:<br><blockquote class=3D"gmail_quote" styl=
e=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; =
padding-left: 1ex;">
John Griffiths schrieb:<br>
<div class=3D"Ih2E3d">> I hope Luminera will consider implementing a tes=
t suite to test the code<br>
> thoroughly.<br>
<br>
</div>hehe, we don't just consider it ;-) we even write the tests=
before the<br>
implementation. But, actually detecting regressions within the video<br>
processing is not so easy as it might look at first sight.<br>
<br>
Hermann<br>
<div><div></div><div class=3D"Wj3C7c"><br>
<br>
</div></div></blockquote></div><br>Hello again<br><br>I have just been play=
ing with cin and blender (what a great program that is) and I was encounter=
ing the swscaler bug, and I found that if I rendered to a slightly smaller =
size (in my case my video is 720x576 and i rendered to 640x480) all went we=
ll, but the surprising thing was when I played it in mplayer it said it was=
720x576? Not sure how that works but worth a try. Why would sw=
scaler be called when the video is not being scaled? <br>
<br>HTH Dan<br>
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--__--__--
Message: 5
Date: Mon, 23 Feb 2009 20:16:22 -0500
From: "Sean M. Pappalardo" <[email protected]>
To: [email protected]
Subject: Re: [CinCV] Question - Cinelerra CV
Reply-To: [email protected]
Laura Winston wrote:
> * capture video from 2 live camcorders via firewire / DV feed.
> * render the 2 camera feeds into a single image with a horizontal
> split on the screen.
> * the recording needs to happen in real time on the pc.
> * allow recording straight onto HDD of the laptop
I haven't done any capture work with Cinelerra myself, but I can tell
you that it is an NLE, that is a non-linear editor, which means it's not
intended for real-time operations.
Will you be displaying the rendered output on some live display during
recording, or do you just need reliable real-time capture?
If the latter, why not just capture the raw DV streams with dvgrab or
similar, then edit them in Cinelerra later to create the split-screen
effect?
If the former, you might be able to set up a pipe using dvgrab and a
series of mjpegtools to accomplish what you need. Something like dvgrab
<parameters> | lavplay | yuvscaler <upper portion of the screen> >
fifoTop.yuv
and a similar command for the bottom half in a second terminal (on a
second processor core, preferably.)
I don't know if yuvplay supports joining, but if so, in a third terminal
you could try yuvplay fifoTop.yuv fifoBottom.yuv | mpeg2enc <parameters>
-o final.mpg
Sean
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--__--__--
Message: 6
Subject: Re: [CinCV] Question - Cinelerra CV
From: "Scott C. Frase" <[email protected]>
To: [email protected]
Date: Mon, 23 Feb 2009 20:26:48 -0500
Reply-To: [email protected]
On Mon, 2009-02-23 at 20:16 -0500, Sean M. Pappalardo wrote:
>
> Laura Winston wrote:
> > * capture video from 2 live camcorders via firewire / DV feed.
> > * render the 2 camera feeds into a single image with a horizontal
> > split on the screen.
> > * the recording needs to happen in real time on the pc.
> > * allow recording straight onto HDD of the laptop
>
> I haven't done any capture work with Cinelerra myself, but I can tell
> you that it is an NLE, that is a non-linear editor, which means it's not
> intended for real-time operations.
Sean/Laura,
Video capture is currently broken in Cinelerra CV. However, there is a
Live Video function in the Heroine Warrior version of Cinelerra
(www.heroinewarrior.com). You might want to give that a shot.
scott
--__--__--
Message: 7
Date: Mon, 23 Feb 2009 19:43:34 -0700
From: Scott Serr <[email protected]>
To: [email protected]
Subject: Re: [CinCV] Question - Cinelerra CV
Reply-To: [email protected]
Laura Winston wrote:
> **Hello,
>
> I'm unable to work out from your website whether *Cinelerra CV* is
> able to do all these:
>
> * capture video from 2 live camcorders via firewire / DV feed.
> * render the 2 camera feeds into a single image with a horizontal
> split on the screen.
> * the recording needs to happen in real time on the pc.
> * allow recording straight onto HDD of the laptop
>
> Is your product suitable for all the above?
>
> If not, can you suggest an alternate product that may be suitable?
Laura, I'd look at video security applications on Linux. About 8 years
ago Linux Journal had an article on DIY security video camera system for
a daycare center.
Maybe
http://www.zoneminder.com/
I suspect they keep the feeds/streams separate. I know the multi-camera
acquisition boards put many analog feeds into one stream, but that won't
help with your digital and laptop needs. There probably is a hardware
solution out there - and then it'd just be dv_grab I guess.
--__--__--
Message: 8
Date: Mon, 23 Feb 2009 20:49:18 -0600
Subject: Re: [CinCV] Question - Cinelerra CV
From: Daniel Jircik <[email protected]>
To: [email protected]
Reply-To: [email protected]
--00163642661b57267b0463a12a43
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Steep learning curve but check out http://www.veejayhq.net/
ciao
Daniel
On Mon, Feb 23, 2009 at 8:43 PM, Scott Serr <[email protected]> wrote:
> Laura Winston wrote:
>
>> **Hello,
>>
>> I'm unable to work out from your website whether *Cinelerra CV* is able to
>> do all these:
>>
>> * capture video from 2 live camcorders via firewire / DV feed.
>> * render the 2 camera feeds into a single image with a horizontal
>> split on the screen.
>> * the recording needs to happen in real time on the pc.
>> * allow recording straight onto HDD of the laptop
>>
>> Is your product suitable for all the above?
>>
>> If not, can you suggest an alternate product that may be suitable?
>>
>
> Laura, I'd look at video security applications on Linux. About 8 years ago
> Linux Journal had an article on DIY security video camera system for a
> daycare center.
>
> Maybe
> http://www.zoneminder.com/
>
> I suspect they keep the feeds/streams separate. I know the multi-camera
> acquisition boards put many analog feeds into one stream, but that won't
> help with your digital and laptop needs. There probably is a hardware
> solution out there - and then it'd just be dv_grab I guess.
>
>
>
>
> _______________________________________________
> Cinelerra mailing list
> [email protected]
> https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
>
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Steep learning curve but check=A0 out <a href=3D"http://www.veejayhq.net/";>=
http://www.veejayhq.net/</a><br>ciao<br>Daniel<br><div class=3D"gmail_quote=
">On Mon, Feb 23, 2009 at 8:43 PM, Scott Serr <span dir=3D"ltr"><<a href=
=3D"mailto:[email protected]";>[email protected]</a>></span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Laura Winston wro=
te:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
**Hello,<div class=3D"Ih2E3d"><br>
<br>
I'm unable to work out from your website whether *Cinelerra CV* is able=
to do all these:<br>
<br>
=A0 =A0* capture video from 2 live camcorders via firewire / DV feed.<br>
=A0 =A0* render the 2 camera feeds into a single image with a horizontal<b=
r>
=A0 =A0 =A0split on the screen.<br>
=A0 =A0* the recording needs to happen in real time on the pc.<br>
=A0 =A0* allow recording straight onto HDD of the laptop<br>
<br>
Is your product suitable for all the above?<br>
<br>
If not, can you suggest an alternate product that may be suitable?<br>
</div></blockquote>
<br>
Laura, I'd look at video security applications on Linux. =A0About 8 yea=
rs ago Linux Journal had an article on DIY security video camera system for=
a daycare center.<br>
<br>
Maybe<br>
<a href=3D"http://www.zoneminder.com/"; target=3D"_blank">http://www.zonemin=
der.com/</a><br>
<br>
I suspect they keep the feeds/streams separate. =A0I know the multi-camera =
acquisition boards put many analog feeds into one stream, but that won'=
t help with your digital and laptop needs. =A0There probably is a hardware =
solution out there - and then it'd just be dv_grab I guess.<div>
<div></div><div class=3D"Wj3C7c"><br>
<br>
<br>
<br>
_______________________________________________<br>
Cinelerra mailing list<br>
<a href=3D"mailto:[email protected]"; target=3D"_blank">cinele...@skol=
elinux.no</a><br>
<a href=3D"https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra"=
target=3D"_blank">https://init.linpro.no/mailman/skolelinux.no/listinfo/ci=
nelerra</a><br>
</div></div></blockquote></div><br>
--00163642661b57267b0463a12a43--
--__--__--
Message: 9
From: Kurt Georg Hooss <[email protected]>
Organization: Schoepfung & Wandel
To: [email protected]
Subject: Re: [CinCV] Question - Cinelerra CV
Date: Tue, 24 Feb 2009 01:21:05 +0100
Reply-To: [email protected]
Laura, thanks for asking, but no.
Cinelerra is capable of professional multitrack video and audio editing,
but generally only with pre-recorded track data. No live performances.
For recording e.g. dv data from camcorder,
use the Kino or dvgrab programs for editing in Cinelerra.
Splitting the screen is no problem, however.
With live, real-time editing, I have no experience,
so I cannot recommend any software. I have heard, though, of
"LiVES - Open Source Video Editor for GNU Linux". Go check it out.
Cheers
Georg
Am Monday 23 February 2009 12:09:27 schrieb Laura Winston:
> **Hello,
>
> I'm unable to work out from your website whether *Cinelerra CV* is able
> to do all these:
>
> * capture video from 2 live camcorders via firewire / DV feed.
> * render the 2 camera feeds into a single image with a horizontal
> split on the screen.
> * the recording needs to happen in real time on the pc.
> * allow recording straight onto HDD of the laptop
>
> Is your product suitable for all the above?
>
> If not, can you suggest an alternate product that may be suitable?
>
> Thank you,
> Laura Winston
>
> The Negotiation Experts
> [email protected] <mailto:[email protected]>
> www.negotiations.com <http://www.negotiations.com/>
> Tel: +61 1300 769 927
> Fax: +61 (0) 2 8580 50 50
--
dr. kurt georg hooss
schoepfung & wandel wissenschaftliche medienberatung
breite strasse 6-8, d-23552 luebeck
fon +49-(0)451-3003-474 (fax -333)
www.schoepfung-und-wandel.de
--__--__--
Message: 10
Date: Tue, 24 Feb 2009 10:06:05 +0100
To: [email protected]
Subject: Re: [CinCV] Question - Cinelerra CV
From: "Herman Robak" <[email protected]>
Cc: "Laura Winston" <[email protected]>
Reply-To: [email protected]
On Mon, 23 Feb 2009 12:09:27 +0100, Laura Winston
<[email protected]> wrote:
> **Hello,
>
> I'm unable to work out from your website whether *Cinelerra CV* is able
> to do all these:
>
> * capture video from 2 live camcorders via firewire / DV feed.
> * render the 2 camera feeds into a single image with a horizontal
> split on the screen.
> * the recording needs to happen in real time on the pc.
> * allow recording straight onto HDD of the laptop
>
> Is your product suitable for all the above?
>
> If not, can you suggest an alternate product that may be suitable?
Dvswitch comes fairly close:
http://dvswitch.alioth.debian.org/wiki/
dvswitch takes raw DV as input and output. It is solely intended
for live work, either capturing DV over firewire or relaying it
over TCP/IP. Relaying requires a _fast_ network, mind you, and
there is very little tolerance for congestion and packet loss.
It has picture-in-picture, but not split-screen. I have proposed
split-screen (or rather the general case: arbitrary shaped PiP)
to the author, and he was not downright dismissive. :-)
Beware, this software is still young, and the setup is partially
command-line driven. The limited feature set makes it simpler
to master, though.
NUUG and Debconf have used dvswitch for a while.
--
Herman Robak
--__--__--
_______________________________________________
Cinelerra mailing list
[email protected]
https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
End of Cinelerra Digest
