[Kdenlive-devel] KDEnlive Bugs I encountered

[Stefan Naumann]

What about saving the project for example one time per 5 minutes or so. But then the project size is too big for it to be saved within a short period if time, so that the user can edit the project without trouble. Maybe, there should just be a little hint on the bottom if that happens. When KDEnlive crashes the project can then be recovered. If KDEnlive crashes while saving: have more than just one file. lets say 5. If the last one can't be loaded, the second can. I guess. Adobe Premiere has so small projects - why can't KDEnlive have this small projects?

Running stuff as seperate process would be nice, for example the transcoding dialog, if KDEnlive crashes, the dialog should still be present and untouched and ffmpeg should render the videos further. Most of the crashes I encountered where due to SegFaults. (is there another way to crash a program?). Finding them is a bit difficult (maybe because I'm still a novice in programming). So, of course - if a user can recover their project easily it's nice, but it's even better for them not having to recover them.

Another thing: why is AVCHD not supported? Or let's say badly. Editing it - there should be proxy clips (I like the ffmpeg way - so if you'll have more presets: do not remove the ffmpeg-way), and when the project is rendered - why should the renderer care about it being AVCHD or not? When in doubt: run ffmpeg over it with that high bitrates, that there can't be a loss of quality.

Regards Stefan.
 
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Waren Sie schon auf: www.oettinger-games.net.tf . Helfen Sie mit.


________________________________
 Von: Dan Dennedy <dan at dennedy.org>
An: For kdenlive developers <kdenlive-devel at lists.sourceforge.net> 
Gesendet: 5:38 Freitag, 20.Januar 2012
Betreff: Re: [Kdenlive-devel] KDEnlive Bugs I encountered
 
On Thu, Jan 19, 2012 at 2:01 PM, el jefe delito <eljefedelito at gmail.com> wrote:
> I am talking out of my backside here, as a non-programmer, but...
>> How can you handle a crash in a nice way? An application shouldn't
>> crash, but when it crashes it's too late.
>
> How does an app crash and not bring down the whole OS?  How does Adobe Flash crash often but not bring down Chromium?  How does the Desktop Capture crash and not bring down KDEnlive?  Is there a way to do something similar in other parts of KDEnlive, and allow these parts to be restarted?
>

These occur through process isolation. Web browsers like Chromium run
each tab and plugins in separate processes from the browser shell.
Kdenlive already spawns separate processes for screen capture,
transcoding, and rendering thereby protecting the editing project.

Kdenlive could potentially run the bulk of its editor in a separate
process and leave only the window and perhaps a dialog upon crash -
something like Firefox does as Brian mentioned. That would only add
minor user experience sugar over simply using the desktop environment
to restart kdenlive.

Now, the more extreme approach that would require serious engineering
is to run the majority of MLT in a separate process. To do this
strictly from MLT to Kdenlive would get messy due to things like GUI
toolkit and the way XVideo is being used today for better performance.
We may be able to add around something around MLT that runs the main
object graph in separate process and uses shared memory to transfer
the audio and image to a parent process using the MLT output plugins.
But that will also require the addition of a complete IPC layer over
the MLT API so the Kdenlive logic can still manipulate the object
model of the composition. And in the end, all that buys you is MLT
isolation, and crashing bugs within Kdenlive code still leaves
Kdenlive vulnerable.

-- 
+-DRD-+

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