Problems with speed and reverse

[None]

## Problem with speed :

  Length of a video part does not update when I want to play it slower.

  I needed to comment some part of the code to make it working :

  openshot-1.2.2/windows/ClipProperties.py : 808
    ##if speed_multiplier < original_speed:
      # clip is longer now (keep the short version)
      ##clip_object.end_time = clip_object.start_time + original_length
    ##else:
      # clip is shorter
    clip_object.end_time = new_end_time

## Problem with reverse :

  When I want to play a part of a video in reverse, it does not keep the good part of the video
  I changed a part of the code :

  openshot-1.2.2/windows/ClipProperties.py : 813
    if localcboDirection.lower() == _("Reverse").lower():
      clip_object.reversed = True
      tmp = clip_object.start_time
      clip_object.start_time = clip_object.max_length - clip_object.end_time
      clip_object.end_time = clip_object.max_length - tmp
    else:
      clip_object.reversed = False

But I'm not too good in coding... it works but only at normal speed. when I want to make it slower, I have an other part of the video again

[Olivier Girard (eolinwen)]

Don't worry for that. And thanks a lot. It is a begin. It will be check and will include in the next version after.

[None (b-launchpad-veugeois-fr)]

I think I found why the patch wasn't working with reverse at low speed, I changed it (file openshot-diff).

But I'm not able to see the video neither. I guess the player does not manage reverse video at low speed.

I tried with a cutted clip of 15 seconds, output timestamps seem good but I get a white windows when I try to play the video :

on_mnuClipProperties_activate
on_txtOut_value_changed
on_cboKeyFrame_changed
on_txtHeight_value_changed
on_txtWidth_value_changed
on_scaleAlpha_value_changed
on_cboSimpleSpeed_changed
===original_speed : 1.000000
===localtxtIn : 0.000000
===localtxtOut : 14.925000
===localtxtLength : 14.925000
===localreverse : 0.000000
---clip_object.speed : 1.000000
---clip_object.max_length : 331.998333
---clip_object.start_time : 0.000000
---clip_object.end_time : 14.925000
===clip_object.reversed : 0.000000
===clip_object.start_time : 0.000000
===clip_object.end_time : 14.925000
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_cboSimpleSpeed_changed
on_frmClipProperties_configure_event
on_frmClipProperties_configure_event
on_btnClose_clicked
===original_speed : 1.000000
===localtxtIn : 0.000000
===localtxtOut : 14.925000
===localtxtLength : 14.925000
===localreverse : 0.000000
---clip_object.speed : 0.500000
---clip_object.max_length : 663.996667
---clip_object.start_time : 634.146667
---clip_object.end_time : 663.996667
===clip_object.reversed : 1.000000
===clip_object.start_time : 634.146667
===clip_object.end_time : 663.996667
project modified: Modified clip properties
state saved
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died
first_image == NULL get image died

[Olivier Girard (eolinwen)]

In fact, yes.
You can used it. Do a test like this.
In a video clip, appy a slow speed (in the tab speed). You look the application of the effect in the preview. In the middle, stop it. After, clic on the previous button (the 3 in the left) and see the result.

[None (b-launchpad-veugeois-fr)]

Hi !

  I tried you test, but if I change Speed to 1/2 and Direction to
Reverse on a split video, I can have any image on the preview neither,
It stays white.

Thanks for your help.

Best regards.

None

On 24/11/2010 16:35, cenwen wrote:
> In fact, yes.
> You can used it. Do a test like this.
> In a video clip, appy a slow speed (in the tab speed). You look the application of the effect in the preview. In the middle, stop it. After, clic on the previous button (the 3 in the left) and see the result.
>
> -- Problems with speed and reverse
> https://bugs.launchpad.net/bugs/676133 You received this bug
> notification because you are a direct subscriber of the bug. Status in
> OpenShot Video Editor: New Bug description: ## Problem with speed :
> Length of a video part does not update when I want to play it slower.
> I needed to comment some part of the code to make it working :
> openshot-1.2.2/windows/ClipProperties.py : 808 ##if speed_multiplier <
> original_speed: # clip is longer now (keep the short version)
> ##clip_object.end_time = clip_object.start_time + original_length
> ##else: # clip is shorter clip_object.end_time = new_end_time ##
> Problem with reverse : When I want to play a part of a video in
> reverse, it does not keep the good part of the video I changed a part
> of the code : openshot-1.2.2/windows/ClipProperties.py : 813 if
> localcboDirection.lower() == _("Reverse").lower():
> clip_object.reversed = True tmp = clip_object.start_time
> clip_object.start_time = clip_object.max_length - clip_object.end_time
> clip_object.end_time = clip_object.max_length - tmp else:
> clip_object.reversed = False But I'm not too good in coding... it
> works but only at normal speed. when I want to make it slower, I have
> an other part of the video again To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/openshot/+bug/676133/+subscribe

[Olivier Girard (eolinwen)]

Ah i have done an error. Sorry. I have not test with the reverse function but just only with the preview without this one.
It was a bug of MLT and i was believing that was resolved. I am using the version 0.5.10 and you ?
sudo apt-cache policy melt

[None (b-launchpad-veugeois-fr)]

I had the 0.5.6

The same issue with 0.5.10

$ aptitude show melt
Package: melt
State: installed
Automatically installed: yes

None

On 25/11/2010 18:09, cenwen wrote:
> Ah i have done an error. Sorry. I have not test with the reverse function but just only with the preview without this one.
> It was a bug of MLT and i was believing that was resolved. I am using the version 0.5.10 and you ?
> sudo apt-cache policy melt
>
> -- Problems with speed and reverse
> https://bugs.launchpad.net/bugs/676133 You received this bug
> notification because you are a direct subscriber of the bug. Status in
> OpenShot Video Editor: New Bug description: ## Problem with speed :
> Length of a video part does not update when I want to play it slower.
> I needed to comment some part of the code to make it working :
> openshot-1.2.2/windows/ClipProperties.py : 808 ##if speed_multiplier <
> original_speed: # clip is longer now (keep the short version)
> ##clip_object.end_time = clip_object.start_time + original_length
> ##else: # clip is shorter clip_object.end_time = new_end_time ##
> Problem with reverse : When I want to play a part of a video in
> reverse, it does not keep the good part of the video I changed a part
> of the code : openshot-1.2.2/windows/ClipProperties.py : 813 if
> localcboDirection.lower() == _("Reverse").lower():
> clip_object.reversed = True tmp = clip_object.start_time
> clip_object.start_time = clip_object.max_length - clip_object.end_time
> clip_object.end_time = clip_object.max_length - tmp else:
> clip_object.reversed = False But I'm not too good in coding... it
> works but only at normal speed. when I want to make it slower, I have
> an other part of the video again To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/openshot/+bug/676133/+subscribe

[Dstl (dstilio)]

that is actually the same problem we are facing here:
https://bugs.launchpad.net/openshot/+bug/667806

Nice to see that there is a step forward this issue :)

[Seppo Erviälä (seppo-erviala)]

This bug is still present in 1.3.1

[None (b-launchpad-veugeois-fr)]

You can use the second fix, posted on comment #2 (openshot-diffs)
Lines are not exactly the same, but you should update ClipProperties.py in order to fix the bug.
The only thing which won't be fixed, it's if you want to reverse a clip AND change the speed