Difference between revisions of "FAQ"

Revision as of 14:06, 14 February 2008

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General FAQs

Why doesn't dyloxin talk on the Synfig IRC channel?

dyloxin is a bot that sits in the Synfig IRC channel and stores the IRC logs, not a human. It has no commands, so you won't get any response out of it either.

Why are the CIA in the Synfig IRC channel?

"CIA-28" and friends are bots that sit in the Synfig IRC channel and report whenever they detect a new commit in the subversion repository, giving the committer's name, revision number, and commit log message. The same information for recent commits can be found on cia.vc. ohloh.net has similar pages of statistics.

FAQs relating to the current Synfig release (0.61.07)

Many issues are documented in the bug tracker and on the download page.

What happened to my synfig toolbox?

If you no longer have a synfig toolbox, it means the window positions in your settings file for the toolbox got corrupted during a crash or something and your synfig toolbox is now off the screen. You should remove or edit your settings file to get it back. This bug (1836848) was fixed in SVN r1167.

libsynfig-0.dll was not found

If you get the error message "libsynfig-0.dll was not found" please check that you have synfig (as well as synfig studio) correctly installed.

Can I do anything to improve the stability of synfigstudio?

If you're running on a Hyperthreading or multi-core CPU (e.g Pentium 4 with Hyperthreading or Intel Core2 Duo or Quadcore, etc.) then you may find Synfig is more stable if you restrict it to run on only one processor.

How do I do this on Windows?

To do this on windows, start Synfig Studio, then Ctrl-Alt-Del and choose Task Manager. Select the processes tab, find synfigstudio.exe in the processes list and right click on it. Choose 'Set Affinity' and make sure only one CPU is checked. Unfortunately, this setting isn't preserved so you either have to do this manually each time you start Synfig Studio or use a tool such as the Tom's Hardware Guide Task Assignment Manager.

How do I do this on Linux?

On linux, you need to install schedutils.

Then run synfigstudio like this:

taskset -c 0 synfigstudio

Or if you have synfigstudio open already, run this:

taskset -p -c 0 `pgrep synfigstudio`

Why can't I get sound to work?

Synfig GUI implies that sound files can be loaded and played with the animation previews, to aid with e.g. lip synching. Synfig relies on a helper library called FMOD to handle sound. Unfortunately, it appears that this feature was not fully implemented, and the 'play' code is commented out. Windows support for sound does not even appear to have been attempted. If you need to need to synch to a soundtrack, the easiest way is to use video editing software to add the sound effects afterwards, or use an audio editor to take careful note of the audio cues, and animate the action to coincide with those timestamps.

See this page for sound implementation guidelines.

How do I render to a Video Format from Synfig under Windows

Rendering to video from Synfig requires the libav library. This has not yet been compiled in for the Windows builds. The best solution is render to a sequence of png files and use ffmpeg to assemble them to a video file. Rendering to an animated gif file does work. Rendering to a sequence of png files, is helpful for adding standard audio files in Quicktime Pro, to get a *.mov file.

I have a weird problem building from source. What's up?

Your copy of pkg-config probably doesn't look in the right places for .pc files. If you are installing to /usr/local, try running "export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig" before building or installing anything.

Where did the polygon, draw, sketch, and width tools go?

They are disabled by default due to problems. Instead of the polygon tool, you should use the bline tool. Instead of the width tool, you should just modify the width ducks directly. The draw tool was never completed, is very buggy, and frustrating to use. Since the draw tool is being disabled, then we might as well disable the sketch tool too. You can re-enable them without recompiling by setting some environment variables (you can set environment variables on windows too). Set SYNFIG_ENABLE_POLYGON, SYNFIG_ENABLE_DRAW, SYNFIG_ENABLE_SKETCH and SYNFIG_ENABLE_WIDTH to 1. On Linux/Unix/MacOSX this is as simple as running these commands in a terminal:

export SYNFIG_ENABLE_POLYGON=1
export SYNFIG_ENABLE_DRAW=1
export SYNFIG_ENABLE_SKETCH=1
export SYNFIG_ENABLE_WIDTH=1

Then run synfigstudio from the same terminal. You can probably find some way of getting these variables set automatically when you log in, but it depends on the distro. In Ubuntu you can put them in ~/.xprofile for example.

The polygon, draw, and sketch tools will be on by default in future releases of Synfig, from 0.61.07 onwards. They can be disabled by replacing 'ENABLE' with 'DISABLE' in the above lines.

Why doesn't walk.sif from the SVN work?

In the SVN repository, there's a walk cycle example, but the sif file includes features that are incompatible with the current version of Synfig. A re-worked example can be found in the Walk Cycle Tutorial.

If you can look at the source code and figure out why the .sif file won't load, we'd love to have a fix.

Why does only the first frame of my animation render?

You probably have Use current frame checked in the render dialog box.

Why don't I get the colors I'm expecting?

This Wikipedia article talks about how color output is non-linear, that if 0 is black and 100 is white, then 50 is only about 22 percent of the brightness of white, rather than 50% as you might expect.

In synfig there is an option (on by default) to make sure that if you ask for 50, you get 50% of the brightness of white.

See "File>Setup>Misc>Visually Linear Color Selection". If you turn that off, everything will go back to its non-linear, yet strangely comfortable and familiar mode.

FAQs relating to earlier Synfig versions

These issues have been addressed in the current version of Synfig.

The plant layer doesn't work/displays erratically/doesn't render. Why?

The plant layer should allow pictures like this one to be drawn, but again it had a bug that prevented if from working correctly in Synfig 0.61.06 and earlier. The bug was fixed in svn r620 and release 0.61.07

Further fixes were later added to stop it crashing when 'stem size' or 'splits' were set too high.

Missing icons? synfig/studio doesn't render anything?

You probably compiled synfig with g++ 4.1 using optimisation level 2 or higher. g++ has a bug that prevents Synfig Studio from compositing the images properly. Please recompile synfig using ./configure --enable-optimization=0 or disable optimisation and then rebuild the synfig images. The binary packages for some GNU/Linux distributions are affected by this. Bug #1509627

As of svn r774, it is now OK to build with any optimization level. Also, using gcc 4.2.1 or newer it's possible to successfully build old versions of synfig with strong optimization.

synfigstudio can't find icons?

(I know they rendered fine, but they show up with red crosses everywhere).

This is #1568925 that was introduced in SVN 180. Workaround is to set an environment variable at runtime like this: export SYNFIG_ROOT=/usr (or similar) or just install into /usr/local instead. Fixed in SVN r486.

I'm using synfigstudio on a laptop but can't draw anything using my mouse. What gives?

Try disabling the the touchpad from the input devices dialog. Unfortunately synfigstudio will not remember this setting so you have to do it every time you start synfigstudio.

This was fixed in svn r487 and so synfig 0.61.06 and newer won't have this problem.

Why is everything yellow? / Why are all the colors wrong?

This can happen when you switch between locales, due to a bug in version 0.61.05. It's fixed in the subversion repository (r228). To work around the problem, do the following: from the main window, choose File > Setup > Gamma and set all 3 sliders back to the default value of 2.2.