Video: 5 Fun Things in Fedora 12

Gregory Maxwell gmaxwell at
Mon Nov 30 20:52:57 UTC 2009

2009/11/30 Máirín Duffy <mairin at>:
> To be fair, the video is aimed at people who are not yet using Fedora.

Understood. But it's poor sales for fedora when you use an approach
which works less well for Fedora than it does for windows.

Obviously excluding non-linux users is not an option.

>> The site requires flash.
>> …  If anyone doing fedora marketing wants to put up videos that don't
>> require proprietary software to view, please feel free to drop me an
>> email. I'd be glad to help, or if I'm too busy I can connect you
>> with someone else willing and able to help.
>> Supporting open video technology isn't especially hard, and it doesn't
>> require losing compatibility with people still on proprietary platforms.
>> ... though it is a little more involved than just dropping the videos
>> on youtube.
> I hope you didn't mean to hurt my feelings with your message because it
> could certainly be interpreted that way.

!  No, I didn't.  We all have important things to do with our time, there
is no crime in not taking some step, even an easy one, when we think
doing so will conserve some resources.

I had no idea what your intentions were, only that the result required
flash. I assumed that you simply were unaware of the issue and was
trying to offer to help out, rather than just complaining that it
ought to be done some other way.

The point of saying that its easy is that I simply wanted to make the point
that I'm not suggesting you undertake a super-human effort. Obviously
I failed to account for the difficulties that you already had!

> As noted, the videos were created in Fedora 12 using PiTiVi. I attempted
> to encode them 3 times, for a total of 3 hours rendering time (I let the
> last one render overnight last night since I had wasted hours already)
> using an Ogg container, Theora video codecs, and Vorbis & Celt sound
> codecs. Every single time, the video rendered completely out-of-sync.
> Even though gstreamer was used to render it, it refused to play in
> gstreamer players, only playing in mplayer.

CELT? Celt is completely inapplicable for this use case. PiTiVi
shouldn't be offering it.

This bug sounds vaguely like what you experienced:

One possible work around would be to render to high quality MJPEG in AVI
(which is effectively lossless) plus PCM audio then use a tool like ffmpeg
to Theora to transcode.

> You can ask anyone who knows me - I am insanely religious about software
> freedom and codec freedom. After spending hours filming, editing,
> rendering, and uploading these video (I would guesstimate about 12 hours
> total, during my holiday vacation time) I became impatient and just
> wanted to share the video instead of putting myself through continued
> pain trying to do it the right way.
> Can you help me get this working with ogg & Is there a bug in
> PiTiVi or F12's theora / ogg / celt / vorbis encoders that resulted in
> my having such a poor experience? What do you suggest? I used all of the
> default settings in PiTiVi as I wasn't sure what encoder settings to
> tweak (and at ~1 hour rendering time per attempt making wild guesses
> would not be a prudent usage of my time.)

There must be a bug, because the encoders alone are no less speedy than
what you ended up using, at least not in any material way.

I've never used pitivi before, but I'll install it and attempt to reproduce
your issue.  Could you possibly make your project file available to me if
I'm unable to reproduce this with a trivial test case?

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