Generating video thumbnails seems to be broken in current SVN.
freevo cache --video-thumbs --directory=/freevo/video/thumbtest/
hangs forever, the process (ps axfww) tree looks like this:
...
17184 pts/1 S+ 0:00 \_ /usr/bin/python
/usr/bin/freevo cache --video-thumbs --directory=/freevo/video/thumbtest/
17186 pts/1 S+ 0:00 \_ python
/usr/lib/python2.5/site-packages/freevo/helpers/cache.py cache --video-thumbs
--directory=/freevo/video/thumbtest/
17188 pts/1 S+ 0:00 \_ /usr/bin/python
/usr/bin/freevo
--execute=/usr/lib/python2.5/site-packages/freevo/util/videothumb.pyc
/usr/bin/mplayer /freevo/video/thumbtest/test.avi
/var/cache/freevo/vfs/freevo/video/thumbtest/test.avi.raw.tmp
17190 pts/1 Sl+ 0:00 \_ python
/usr/lib/python2.5/site-packages/freevo/util/videothumb.pyc /usr/bin/mplayer
/freevo/video/thumbtest/test.avi
/var/cache/freevo/vfs/freevo/video/thumbtest/test.avi.raw.tmp
...
17193 pts/1 S+ 0:00 /usr/bin/mplayer -vo png:z=1:outdir=/tmp -ao null
-frames 8 -ss 211 -zoom /freevo/video/thumbtest/test.avi
When I interrupt "freevo cache ..." with control-C, the freevo process(es)
stop, but the mplayer process still hangs in the background (also note
that the parent of the process now is init, not python/freevo).
The videothumb-0.log file contains the following entries (debugging
enabled):
2009-05-14 19:08:00,894 DEBUG encodingcore.py (406):
source='/freevo/video/thumbtest/test.avi'
2009-05-14 19:08:00,895 DEBUG encodingcore.py (412): Video length is 422.0
2009-05-14 19:08:00,896 DEBUG encodingcore.py (927):
CommandThread.__init__(parent=<encodingcore.EncodingJob instance at 0x84b6f2c>,
command=['/usr/bin/mplayer', '-vo', 'png:z=1:outdir=/tmp', '-ao', 'null',
'-frames', '8', '-ss', '211', '-zoom', '/freevo/video/thumbtest/test.avi'],
updatefunc=None, finalfunc=<bound method EncodingJob._videothumb_parse of
<encodingcore.EncodingJob instance at 0x84b6f2c>>, flushbuffer=0,
data='data.png', lock=None)
2009-05-14 19:08:00,898 DEBUG encodingcore.py (940): /usr/bin/mplayer -vo
png:z=1:outdir=/tmp -ao null -frames 8 -ss 211 -zoom
/freevo/video/thumbtest/test.avi
2009-05-14 19:08:00,929 DEBUG encodingcore.py (942): /usr/bin/mplayer thread
running with PID 17192
Traceback (most recent call last):
File "/usr/lib/python2.5/site-packages/freevo/util/videothumb.py", line 143,
in <module>
encjob._wait()
File "/usr/lib/python2.5/site-packages/freevo/encodingcore.py", line 916, in
_wait
raise EncodingError('thread still running')
encodingcore.EncodingError: thread still running
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
self.run()
File "/usr/lib/python2.5/site-packages/freevo/encodingcore.py", line 947, in
run
line = output.readline().strip()
IOError: [Errno 4] Interrupted system call
I'm running the current kaa SVN (r3981) and REL-1_8_4 SVN (r11502)
on a Debian lenny box, using mplayer SVN-r26940 from debian-multimedia.org.
One issue is that this mplayer version doesn't support the "outdir=..."
option in the png video-output driver. Currently I'm using the the
following hack to get the thumbnails working again (but I don't know
if the os.chdir() has any negative side-effects on other parts):
--- freevo/src/encodingcore.py (revision 11502)
+++ freevo/src/encodingcore.py (working copy)
@@ -464,12 +464,13 @@
self.length = 0
position = str(int(self.length / 2.0))
- arguments = [ '-vo', 'png:z=1:outdir=/tmp', '-ao', 'null', '-frames',
'8', '-ss', position, '-zoom' ]
+ arguments = [ '-vo', 'png:z=1', '-ao', 'null', '-frames', '8', '-ss',
position, '-zoom' ]
if self.titlenum:
arguments += [ '-dvd-device', self.source, 'dvd://%s' %
self.titlenum ]
else:
arguments += [ self.source ]
+ os.chdir('/tmp')
self._run(mplayer, arguments, self._videothumb_parse, None, 0,
'data.png')
The other issue is freevo not recognizing the mplayer error. If I enter
"mplayer -vo png:z=1:outdir=/tmp ..." on the command line I get an
error (telling me that outdir is not supported) and mplayer crashes.
I think freevo should somehow be able to detect this error/crash
and not just hang forever. Maybe some kind of race condition?
so long,
Hias
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