Re: [CinCVS] Effects order.

2006-08-05 Thread Ichthyostega

Dan Streetman wrote:

I've had the same problem, but my opinion is all the transitions should be also 
added as effects.
To me, it makes more sense to have effects than transitions.  They do the same 
thing,



Hi Dan,

...the problem is: from a technical viewpoint, they don't do the same thing,
because they are pulling video data out of two sources wheras effects
pull out of one source (the predecessor in the effects chain).
While I agree with you that it would be much more intuitive to have transitions
behave like effects this would imply a generalisation of the effects
infrastructure and there are good chances this would mean touching and adapting
every existing effect as well.

Cheers,
Hermann




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Re: [CinCVS] Effects order.

2006-08-04 Thread Jonas Wulff
On Thu, 2006-08-03 at 20:09 +0200, Herman Robak wrote:

 You may get almost the desired result by crossfading the effects, using
 keyframes, if the transition is a crossfade.  Otherwise, you have to
 use two tracks.
 

Wouldn't it be helpful then to enable transitions to blend between two
tracks, not just two edits?

Just a thought...
 Jonas


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Re: [CinCVS] Effects order.

2006-08-04 Thread mark stavar
I believe that this approach was used in the past by Adobe
Premiere. I think they were known as A and B tracks, reminicent
of the the old A and B rolls when editing was done on film. To my
knowledge all commercial editors have since moved away from this
approach.On 8/4/06, Jonas Wulff [EMAIL PROTECTED] wrote:
On Thu, 2006-08-03 at 20:09 +0200, Herman Robak wrote: You may get almost the desired result by crossfading the effects, using keyframes, if the transition is a crossfade.Otherwise, you have to use two tracks.
Wouldn't it be helpful then to enable transitions to blend between twotracks, not just two edits?Just a thought... Jonas___Cinelerra mailing list
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Re: [CinCVS] Effects order.

2006-08-04 Thread Jonas Wulff
But in recent Premiere versions you can still use transitions between two 
different tracks (but you are not limited to A and B tracks, of course, and you 
can blend between edits aswell...)

 Original-Nachricht 
Datum: Fri, 4 Aug 2006 23:06:00 +1000
Von: mark stavar [EMAIL PROTECTED]
An: cinelerra@skolelinux.no
Betreff: Re: [CinCVS] Effects order.

 I believe that this approach was used in the past by Adobe Premiere.  I
 think they were known as A and B tracks, reminicent of the the old A and B
 rolls when editing was done on film.  To my knowledge all commercial
 editors
 have since moved away from this approach.
 
 On 8/4/06, Jonas Wulff [EMAIL PROTECTED] wrote:
 
  On Thu, 2006-08-03 at 20:09 +0200, Herman Robak wrote:
 
   You may get almost the desired result by crossfading the effects,
 using
   keyframes, if the transition is a crossfade.  Otherwise, you have to
   use two tracks.
  
 
  Wouldn't it be helpful then to enable transitions to blend between two
  tracks, not just two edits?
 
  Just a thought...
  Jonas
 
 
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Re: [CinCVS] Effects order.

2006-08-03 Thread Hermann Vosseler

Marcin Kostur wrote:

Suppose i have two video tracks which i would like to join with a transition. 
Additionally i need
to corret colors (e.g. histogram) on those tracks,

...

If i apply effect to each track, then the transition will use uncorrected part  
in overlapping
moment (is it a bug?).

...

The way i did  it was correct a track and render but it introduced unecessary 
DV-reencoding.


Andraž Tori wrote:

you probably want to say that two edits overlap. just render them first with 
all the corrections
you want and then use the new media files.


Hello Andraž,
Hello Marcin,

quite often, I got struck by this behaviour. I consider it -- not quite
a bug, but rather a shortcomming of the design, i.e. the way transitions
are implemented and controlled in cinelerra.
Basicalliy, it forces me to render the parts withl plugins to a lossles format
before setting up the transitions. (Rendering to dv or mjpeg of course is
not an option because of the quality loss introduced by re-encoding).
This approach works, but really can't be called a solution:

 - it is destructive, wheras all editing should be non-destructive
 - it forces me into using a huge amount of disk space (which can
   get a nightmare in large projects)
 - it's against the natural workflow: normally, we first select the
   takes and try to cut, and later on, if all cuts are OK and the
   whole flow of the movie is working, we do the fine tuning.
   With this problem we either can't use transitions while cutting
   (if we need the effects, e.g. slow motion), or we can't use a
   preliminary version of the effects later on to be enhanced.

So I think, we should open a enhancement ticket on this. What's
your oppinion?

Cheers,
Hermann




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Re: [CinCVS] Effects order.

2006-08-03 Thread Andraž Tori
On Thu, 2006-08-03 at 18:11 +0200, Hermann Vosseler wrote:
 Marcin Kostur wrote:
  Suppose i have two video tracks which i would like to join with a 
  transition. Additionally i need
  to corret colors (e.g. histogram) on those tracks,
 ...
  If i apply effect to each track, then the transition will use uncorrected 
  part  in overlapping
  moment (is it a bug?).
 ...
  The way i did  it was correct a track and render but it introduced 
  unecessary DV-reencoding.
 
 Andraž Tori wrote:
  you probably want to say that two edits overlap. just render them first 
  with all the corrections
  you want and then use the new media files.
 
 Hello Andraž,
 Hello Marcin,
 
 quite often, I got struck by this behaviour. I consider it -- not quite
 a bug, but rather a shortcomming of the design, i.e. the way transitions
 are implemented and controlled in cinelerra.
 Basicalliy, it forces me to render the parts withl plugins to a lossles format
 before setting up the transitions. (Rendering to dv or mjpeg of course is
 not an option because of the quality loss introduced by re-encoding).
 This approach works, but really can't be called a solution:
 
   - it is destructive, wheras all editing should be non-destructive
   - it forces me into using a huge amount of disk space (which can
 get a nightmare in large projects)
   - it's against the natural workflow: normally, we first select the
 takes and try to cut, and later on, if all cuts are OK and the
 whole flow of the movie is working, we do the fine tuning.
 With this problem we either can't use transitions while cutting
 (if we need the effects, e.g. slow motion), or we can't use a
 preliminary version of the effects later on to be enhanced.
 
 So I think, we should open a enhancement ticket on this. What's
 your oppinion?

That this is quite some work to be implemented, especially in the GUI
which needs to be changed to allow for a plugin to be attached to a
specific edit. And also changes in XML format...

bye
andraz



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Re: [CinCVS] Effects order.

2006-08-03 Thread Herman Robak
On Thu, 03 Aug 2006 18:11:52 +0200, Hermann Vosseler [EMAIL PROTECTED]  
wrote:



Marcin Kostur wrote:
Suppose i have two video tracks which i would like to join with a  
transition. Additionally i need

to corret colors (e.g. histogram) on those tracks,

...
If i apply effect to each track, then the transition will use  
uncorrected part  in overlapping

moment (is it a bug?).

...
The way i did  it was correct a track and render but it introduced  
unecessary DV-reencoding.


Andraž Tori wrote:
you probably want to say that two edits overlap. just render them first  
with all the corrections

you want and then use the new media files.


Hello Andraž,
Hello Marcin,

quite often, I got struck by this behaviour. I consider it -- not quite
a bug, but rather a shortcomming of the design, i.e. the way transitions
are implemented and controlled in cinelerra.


 It is a shortcoming in the design, and it has been discussed before.
The problem is actually not the effect order, but the fact that effects
are applied to the timeline only.  The transition effects peeks into
parts of the source video that is beyond the edit, and not on the time-
line.  Whether you apply the effects before or after the transition, it
will not fix this problem.

Say clip A has a brightness correction and clip B has a colour correction,
applied as effects, and a crossfade between them:

  (CF)
A
   BBB
brightness correctioncolour correction

At the clip point, A starts fading away, but suddenly loses the brightness
correction.  B's colour correction slams in at 100% before B is visible,
and is applied to the mix of A and B.

What Marcin and Hermann want, is the brightness correction to be applied
_only_ to A _throughout_ the crossfade, and the colour correction to be
applied _only_ to B, also during the crossfade.

Some of us suggested that we should implement this, with extra markings
on the timeline to indicate when effects would bleed into transitions.
However, it was deemed too complex, and dropped.

You may get almost the desired result by crossfading the effects, using
keyframes, if the transition is a crossfade.  Otherwise, you have to
use two tracks.

--
Herman Robak

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Re: [CinCVS] Effects order.

2006-08-01 Thread Marcin Kostur

Dear Andraz,

In transision 2 tracks overlap - and i need to correct them before
transiting which is in C2 gui impossible.

Marcin

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Re: [CinCVS] Effects order.

2006-08-01 Thread Andraž Tori
you probably want to say that two edits overlap.

just render them first with all the corrections you want and then use
the new media files.

bye
andraz

On Tue, 2006-08-01 at 10:34 +0200, Marcin Kostur wrote:
 Dear Andraz,
 
 In transision 2 tracks overlap - and i need to correct them before
 transiting which is in C2 gui impossible.
 
 Marcin
 
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Re: [CinCVS] Effects order.

2006-08-01 Thread Marcin Kostur

Hi Andraz

Of cource, i meant edit.

That is exactly what i did. But it is annoying if you have more than
one edit (e.g 100). And requires reencoding.

On the other hand this also means that transistions which have overlap
are not compatible  with effects which is a major cinelerra concept-bug.
It should be somehow possible to apply the effect to edit before doing 
transition.


the best

Marcin Kostur

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[CinCVS] Effects order.

2006-07-12 Thread Marcin Kostur

Dear Users,

There is the next problem i have with snv 2.0:

Suppose i have two video tracks which i would like to join with
a transition. Additionally i need to corret colors (e.g. histogram) on 
those tracks,
but the color correction depends on the shot - (e.g one was couldy one 
sunny).


What should i do?

If i apply histogram to each track, then the transition will use 
uncorrected part
in overlapping moment (is it a bug?). If I apply histogram to the whole 
video

then the control over histogram parameters becomes very difficult
(invisible keyframe settings). Stacking tracks is also very cumbersome
(suppose i have 20 of them ;-)
The way i did  it was correct a track and render but it introduced 
unecessary

DV-reencoding.

Do you have any tips?

The best

Marcin



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