[CinCVS] Transitions between two loaded files.

2008-02-02 Thread Marcin Okraszewski
Hi,
I'm having a bit of trouble with transitions between two files. As I
finally figured out, I have to remove 1 second at the end of first
track and then drop the transition effect. Otherwise the first video
is frozen in the transition. But what bothers me, is that it is very
inconvenient to do. I have to do first a delete edits an then do
transition. I think it is one of most basic usage scenarios. Can't it
be done somehow easier?

Thanks for help,
Marcin Okraszewski

P.S.
I've read at least 10 times the section about transitions in
thedocumentation
(http://cv.cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_17.html).
While it works perfectly with the described example, when there is a
part cut out, it does not really help much with the last frozen frame
problem. The sentences the first asset needs to have enough data
after the edit point to fill the transition into the second edit and
It is a common error to put a dissolve transition just after the last
frame of an asset.  didn't really help me to understand what to do to
avoid the frozen frame. Just one sentence like To solve the problem,
remove trailing second from first asset, and then apply transition. I
think would help me an others as well.

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Herman Robak
On Sat, 02 Feb 2008 15:22:33 +0100, Marcin Okraszewski [EMAIL PROTECTED]  
wrote:



Hi,
I'm having a bit of trouble with transitions between two files. As I
finally figured out, I have to remove 1 second at the end of first
track and then drop the transition effect. Otherwise the first video
is frozen in the transition. But what bothers me, is that it is very
inconvenient to do. I have to do first a delete edits an then do
transition. I think it is one of most basic usage scenarios. Can't it
be done somehow easier?


 Not with the way Cinelerra currently works...

 ...which I personally think is a little wrong.  The way _I_ would
consider natural is not that the transition _begins_ at the edit
point, but that it would be _centered_ at the edit point.

 However, that would not suit your usecase.  For you, it would be
convenient if the transition _ended_ at the edit point.

 My feature suggestion to appease all parties would be to let
transitions have three allowed alignment, chosen by the user:
1. Start at the cut point
2. Center around the cut point (50/50 at the edit point)
3. End at the cut point

 If the timeline view is far zoomed out, it will be hard to do
this reliably with the mouse, though.  Use modifier keys and
a custom cursor or transition sub-icon to indicate the alignment,
perhaps?  Other suggestions?

 I, for one, would like this feature.

--
Herman Robak

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Marcin Okraszewski
  Not with the way Cinelerra currently works...

Bad news :( So is there maybe other prefered model of work, rather
than with separate files?

  My feature suggestion to appease all parties would be to let
 transitions have three allowed alignment, chosen by the user:
 1. Start at the cut point
 2. Center around the cut point (50/50 at the edit point)
 3. End at the cut point

Sounds good for me. Though maybe there could be like auto option
which would slide aligment depending on how much material on either
side it has available. If it as material availabe on both sides, it
takes center. Then, if there is not enough of it, it slides it to have
the transition without frozen frames.

Marcin

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread mskala
On Sat, 2 Feb 2008, Herman Robak wrote:
   However, that would not suit your usecase.  For you, it would be
 convenient if the transition _ended_ at the edit point.

When I'm syncing the transitions to music I normally want the start of the
transition to occur on the beat, so I hope that the current behaviour will
remain available even if there's an option created for something else.

I think what the original poster is missing is that while a transition is
occurring, you are really displaying both clips on the screen at once.
In effect there are two tracks even if it only shows on the timeline as
one, and the clips must overlap.  There's no getting around the fact that
the source material must include frames past the point where the
transition starts.  If you try to do transitions from the very end of one
clip to the very start of another, then of course you're going to have
problems and there's not much the system can really do about it; you're
saying Display this clip all the way to the last frame, and then keep
displaying it for one second more, but oh no, don't you dare freeze the
frame during that time!  Is it supposed to create frames from thin air?

Automatically reducing the clip's length by the length of the transition
to create the overlap may help, but only if you don't care about the
overall length of the clip; it would mean that two one-minute clips
combine to be 1:59 in length.  When doing music sync I *do* care about the
overall length, so clipping a second off would be extremely inconvenient.

I think it is the usual expected case that the clip you put on the
timeline won't be an entire video file up to the last frame - that's not
how video editing is normally done.  Remember that an edit isn't a file,
it's a chunk selected from a file.  Normally one would have some extra
frames on either side (the director says Lights, camera, action, the
clapboard claps, the actors do their thing, the director says cut, and
you only use the bit in the middle) and so it shouldn't be the default to
expect that the clip will go all the way up to the last frame of the
source footage.

If things were designed such that transitions went between tracks instead
of between edits on the same track, that might make it a lot easier to
understand.  I think it would mean an architectural change, though.
-- 
Matthew Skala
[EMAIL PROTECTED]Embrace and defend.
http://ansuz.sooke.bc.ca/

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Raffaella Traniello
On Sat, 2008-02-02 at 10:11 -0500, [EMAIL PROTECTED] wrote:
 If things were designed such that transitions went between tracks instead
 of between edits on the same track, that might make it a lot easier to
 understand. 
If it is for understanding, cross fading two clips overlapping on two
separate tracks using fade curves can help. 
Or just looking carefully at the cross fade symbol.

Raffaella


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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Marcin Okraszewski
This is what I suppose is the difference between professional and
home use. Though, I've tried quite several video editing tools, and
none of them freeze the last frame by default if the video wasn't cut.
OK, I did not try Adobe Premier, which probably targets the same
audience as Cinelerra. Anyway, the configurable behaviour, as
described by Herman, would probably satisfy all needs.

Marcin


On 2/2/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
 On Sat, 2 Feb 2008, Herman Robak wrote:
However, that would not suit your usecase.  For you, it would be
  convenient if the transition _ended_ at the edit point.

 When I'm syncing the transitions to music I normally want the start of the
 transition to occur on the beat, so I hope that the current behaviour will
 remain available even if there's an option created for something else.

 I think what the original poster is missing is that while a transition is
 occurring, you are really displaying both clips on the screen at once.
 In effect there are two tracks even if it only shows on the timeline as
 one, and the clips must overlap.  There's no getting around the fact that
 the source material must include frames past the point where the
 transition starts.  If you try to do transitions from the very end of one
 clip to the very start of another, then of course you're going to have
 problems and there's not much the system can really do about it; you're
 saying Display this clip all the way to the last frame, and then keep
 displaying it for one second more, but oh no, don't you dare freeze the
 frame during that time!  Is it supposed to create frames from thin air?

 Automatically reducing the clip's length by the length of the transition
 to create the overlap may help, but only if you don't care about the
 overall length of the clip; it would mean that two one-minute clips
 combine to be 1:59 in length.  When doing music sync I *do* care about the
 overall length, so clipping a second off would be extremely inconvenient.

 I think it is the usual expected case that the clip you put on the
 timeline won't be an entire video file up to the last frame - that's not
 how video editing is normally done.  Remember that an edit isn't a file,
 it's a chunk selected from a file.  Normally one would have some extra
 frames on either side (the director says Lights, camera, action, the
 clapboard claps, the actors do their thing, the director says cut, and
 you only use the bit in the middle) and so it shouldn't be the default to
 expect that the clip will go all the way up to the last frame of the
 source footage.

 If things were designed such that transitions went between tracks instead
 of between edits on the same track, that might make it a lot easier to
 understand.  I think it would mean an architectural change, though.
 --
 Matthew Skala
 [EMAIL PROTECTED]Embrace and defend.
 http://ansuz.sooke.bc.ca/

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Herman Robak

On Sat, 02 Feb 2008 16:11:46 +0100, [EMAIL PROTECTED] wrote:


On Sat, 2 Feb 2008, Herman Robak wrote:

  However, that would not suit your usecase.  For you, it would be
convenient if the transition _ended_ at the edit point.


When I'm syncing the transitions to music I normally want the start of  
the
transition to occur on the beat, so I hope that the current behaviour  
will

remain available even if there's an option created for something else.

I think what the original poster is missing is that while a transition is
occurring, you are really displaying both clips on the screen at once.
In effect there are two tracks even if it only shows on the timeline as
one, and the clips must overlap.


 In my opinion, as user should not have to understand this in order to
use transitions.  My rationale for proposing alternative behaviours on
the transition effect is that such a common effect should be immediately
usable to naive and lazy users.
 The align-on-end approach will always work without surprises, and will
be the safest way for the user who has lax requirements on the timing:
A user who just drops uncut clips on the timeline, and puts transitions
between them.

 My suggested before-mid-after snapping is not a truly general feature.
For ultimate flexibility a transition should be freely moveable.  After
all, moving the _edit_ point to adjust a transition is not The Right
Thing.  You may have found an edit point that is well timed without
a transition, and that information should be preserved.

But I'm not sure how useable a freely slideable transition would be.

--
Herman Robak

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Herman Robak
On Sat, 02 Feb 2008 16:01:41 +0100, Marcin Okraszewski [EMAIL PROTECTED]  
wrote:



 My feature suggestion to appease all parties would be to let
transitions have three allowed alignment, chosen by the user:
1. Start at the cut point
2. Center around the cut point (50/50 at the edit point)
3. End at the cut point


Sounds good for me. Though maybe there could be like auto option
which would slide aligment depending on how much material on either
side it has available. If it as material availabe on both sides, it
takes center. Then, if there is not enough of it, it slides it to have
the transition without frozen frames.


 Clever, but fraught with surprises.  The user will have to know
about what is going on, or not care about the timing and alignment.

--
Herman Robak

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Re: [CinCVS] Transitions between two loaded files.

2008-02-02 Thread Ichthyostega
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Herman Robak schrieb:
 My suggested before-mid-after snapping is not a truly general feature. For 
 ultimate
 flexibility a transition should be freely moveable.  After all, moving the 
 _edit_ point
 to adjust a transition is not The Right Thing.  You may have found an edit 
 point that
 is well timed without a transition, and that information should be preserved.

thanks Herman for this proposal. I've noted it for Cin-3 and will
provide the necessary infrastructure.

- -- Hermann V.

-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFHpK0GZbZrB6HelLIRAuPoAKCKexnrBeX0C0Z3IbhZ3cDYqSBEwgCbBklh
5Lz+5OD/wDCFjY5rL18xzwI=
=nzyo
-END PGP SIGNATURE-

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[CinCVS] Transitions between two loaded files.

2008-01-27 Thread Marcin Okraszewski
Hi,
I'm having a bit of trouble with transitions between two files. As I
finally figured out, I have to remove 1 second at the end of first
track and then drop the transition effect. Otherwise the first video
is frozen in the transition. But what bothers me, is that it is very
inconvenient to do. I have to do first a delete edits an then do
transition. I think it is one of most basic usage scenarios. Can't it
be done somehow easier?

Thanks for help,
Marcin Okraszewski

P.S.
I've read at least 10 times the section about transitions in the
documentation 
(http://cv.cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_17.html).
While it works perfectly with the described example, when there is a
part cut out, it does not really help much with the last frozen frame
problem. The sentences the first asset needs to have enough data
after the edit point to fill the transition into the second edit and
It is a common error to put a dissolve transition just after the last
frame of an asset.  didn't really help me to understand what to do to
avoid the frozen frame. Just one sentence like To solve the problem,
remove trailing second from first asset, and then apply transition. I
think would help others too.

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