Re: doc-view.el blog posting

[Bill Clementson]

Hi all,

Bill Clementson <billclem@gmail.com> writes:

> Hi Peter,
>
> Peter Dyballa <Peter_Dyballa@Web.DE> writes:
>> Am 03.09.2007 um 20:58 schrieb Bill Clementson:
>>
>>> Wouldn't libtheora be necessary for outputting OGG format videos?
>>
>> Yes, libtheora is needed to encode video material. Ogg is just a
>> container format for *some* streams of compressed data (audio, video,
>> text).
>>
>>
>> Perian does not offer any ready to use tools. It only has the APIs
>> and library functions. With QuickTime Pro or iMovie or such gadgets
>> it might work to save the recorded scene in an Ogg container with
>> Vorbis audio and Theora video contents.
>>
>> If Perian is missing things like Theora, the XiphQT plug-in has it:
>> http://www.xiph.org/quicktime/.
>>
>>
>> I am not doing anything with video or audio programmes (and my clone
>> is missing spare time, too), except listening to some free music
>> recorded at concerts or watching some funny video.
>
> Ok, thanks for the info. I've had "partial" success in creating an ogg
> video file from my QT movie. I did the following:
>
> 1. Downloaded XiphQT package from:
> http://www.xiph.org/quicktime/download.html
> 2. Moved XiphQT.component to ~/Library/Components/
> 3. Loaded my doc-view.mov movie into iMovie
> 4. In iMovie, selected File/Share... menu option
> 5. Selected "Expert Settings" from the drop down menu
> 6. Selected "Movie to Ogg" as the Export: option and pressed
> "Options..."
> 7. Under "Video Settings", I selected "Best" for Frames per Second and
> "Best" for Compressor Quality and "High" for Sharpness
>
> The movie was converted to OGG format (e.g. - an OGG container with
> the sound in the Vorbis codec and the video in the Theora
> code). However, although the resulting sound quality was ok, the video
> quality was very poor. It was so poor that, although I could make out
> what was happening in the movie, it is doubtful that anyone would want
> to watch it. So, I guess converting .MOV movies to OGG format isn't
> really a viable option.
>
> On Mac OS X, I can use VLC to view OGG videos; however, I haven't been
> able to find any screenrecording utility that will save to OGG. Does
> anyone have any recommendations?

Just for the record (and in case any Mac OS X users find themselves in
the same predicament), I was able to finally convert my Quicktime
Movie to OGG. The issue was iMovie converting everything first to DV,
when it did the export. If you are able to use QuickTime Pro to export
again as OGG you don't have the same problem. I converted the movie to
OGG format and have posted it on my blog. A description of what I went
through and a link to the doc-view.ogg movie are here:
http://bc.tech.coop/blog/070904.html

The OGG format movie is actually smaller in size (~9MB as opposed to
~16MB for the Quicktime movie) and of comparable quality.

Thanks to Tassilo, Peter, and Xavier for the pointers and suggestions.

- Bill