http://qa.mandrakesoft.com/show_bug.cgi?id=3172
------- Additional Comments From [EMAIL PROTECTED] 2003-03-11 15:52 -------
The best test is with mencoder. Try encoding an unencrypted VOB file, or TV if
you have a TV card, and compare fps between 9.0 and cooker.
Here is a script to encode a vob file in mpeg4 with libavcodec (adjust SCALE
and CROP values to your movie):
#!/bin/sh
SCALE=560:240
CROP=712:428:2:72
CIBLE=/space/video.avi
SOURCE=/space/dvd.vob
LAVCOPT=vcodec=mpeg4:vbitrate=800:v4me:vhq
mencoder -nosound -o /dev/null -ovc lavc -lavcopts $LAVCOPT:vpass=1 -vop
scale=$SCALE,crop=$CROP -zoom -sws 2 $SOURCE && mencoder -nosound -o $CIBLE -
ovc lavc -lavcopts $LAVCOPT:vpass=2 -vop scale=$SCALE,crop=$CROP -zoom -sws 2
$SOURCE
----------------
This one will encode TV on the fly (for French tv, adjust values/norm to your
country):
#!/bin/sh
case $1 in
1 ) freq=647.25
chaine=tf1 ;;
2 ) freq=687.25
chaine=france2 ;;
3 ) freq=735.25
chaine=france3 ;;
4 ) freq=823.25
chaine=canal+ ;;
5 ) freq=671.25
chaine=arte ;;
6 ) freq=799.25
chaine=m6 ;;
7 ) freq=775.25
chaine=tv5 ;;
* ) echo "unknown channel"
exit ;;
esac
echo "Press ENTER to start"
read
mencoder -tv on:Driver=v4l:input=0:norm=SECAM:freq=$freq:width=768:height=576 -
vop pp=hb/vb/dr/al/lb -oac mp3lame -ovc lavc -lavcopts vcodec=mjpeg -o
${chaine}.avi
----------------
For encoding in vorbis, I noticed it using transcode, I don't know if this is
reproducible with other softwares.
My CPU is an AthlonXP2400+.
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You are on the CC list for the bug, or are watching someone who is.
------- Reminder: -------
assigned_to: [EMAIL PROTECTED]
status: NEW
creation_date:
description:
This bug has been signaled on cooker mailing list, I signal it on behalf of
Wesley J Landaker, who could not reach Bugzilla:
> IO-APIC is enabled on my system, however all interrupts are routed to
> CPU0. This didn't used to be the case, and I see a *drastic*
> performance hit because of this (for instance, using mencoder to
> capture real-time TV I used to get 35fps, now I can't even get
> 20fps).
It has been confirme by several people with different kernels:
with standard kernel 2.4.21, I observed a very drastic performance problem with
mencoder, encoding a video or TV, or encoding sound in oggvorbis (about 5
times slower).
This happens also with the smp kernel, and this is even worse with the
multimedia kernel.
