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Hi Björn, *,

(fullquote since it has been a while since the post, so new
subscribers might not even have the original mail :-)) (my reply

On Tue, Aug 14, 2012 at 10:28 AM, Bjoern Michaelsen
<> wrote:

here is approximately one year since we migrated LibreOffice to one "core" repo:

I think it would be totally awesome to run gource:

over that one year and show how we are doing.




I created one - those who are in Berlin at the Conference and attended
the Opening Talks already have seen a speed-up version of it after the
Keynote, but here it is in all its glory (and with sound):

It is from the MELD_LIBREOFFICE_REPOS til l 2012-09-28

Boring details for those interested:

Produced with
git log --pretty=format:user:%aN%n%ct --reverse --raw --encoding=UTF-8
--no-renames MELD_LIBREOFFICE_REPOS.. >/tmp/mergedrepo_gource.log
(created the log in a separate step, since otherwise gource would take
long time parsing the log before doing something useful, and because I
wanted to start at that tag.  "gource --log-format git" will reveal
that command)

./gource --date-format "%Y-%m-%d (%A)" --no-vsync --max-files 4000
-1280x720 -s 0.1 -c 3 -r 25 -i 15 --disable-auto-skip
--bloom-multiplier 0.4 --bloom-intensity 0.4 --hide
filenames,dirnames,usernames,tree,mouse,progress --stop-at-end --path
/tmp/mergedrepo_gource.log -o - |ffmpeg -r 25 -f image2pipe -vcodec
ppm -i - -f yuv4mpegpipe -pix_fmt yuv420p - 2>/dev/null |
~/rpmbuild/BUILD/x264_8bit/x264 --demuxer y4m --preset placebo --qp 0
-o /tmp/lossless8bit_gsource.mkv -

Then muxed with the audio, audio delay 650 ms, video stretch factor
(to match the audio's length) of 1.13.
The delay is set to match the audio with the video, make it look at
the video was visual effect to the sound :-) - works out quite nice at
least at the very start as well as in a few other places..

Note: Don't use placebo when playing with it - use ultrafast until
you're happy. If you want to create the real encode, also using
something else than slower (i.e. veryslow or placebo) will drastically
increase encoding time with only little gain wrt. filesize

The tailing slideshow was created using pitivi, avidemux2, aegisub & mplayer
(background from the presentation template)

Create basic stuff in pitivi, have it render it as lossless jpeg (the
only lossless codec offered that won't cause 16 seconds to be in the
500+MB range), then use avidemux to fix the encoding glitches
(pitivi/gstreamer at a few places decides to ignore the topmost video
layer for a single frame, resulting in only the photo being displayed,
without the motif-frame meant to cover the rest).
Did the text in aegisub (an advanced subtitle editor), then combined
the two with mplayer and fed it into x264 (again with the lossless


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