On Friday 16 January 2004 12:23, Steven M. Schultz wrote:
> On Fri, 16 Jan 2004, James Finnall wrote:
> ARGH - that's the rate control bug that was supposedly fixed a
> few days ago :(
>
> As a workaround could you try a larger '-b' option with mplex?
> That's the video buffer size. Normally the DVD default of 220
> is enough, but I am curious if '-b 300' or perhaps a bit larger
> will work.
>
Well, -b 300 didn't work and neither did -b 500. The man page is interesting
though on this setting. It appears that the default value is 46KB.
I do have some interesting results to report though, it may be related to this
bug and maybe help to track it down. When I couldn't get the current CVS
to build my project. I moved the build directory back to what I had several
days ago. To my surprise it still didn't build. Exact same error message.
I know these tools had worked. But I had the sound drop outs. The only
change I made in the project was reducing the time for the still images. I
dropped them to 15 seconds from 60 seconds. Which also produces 4 times
the start/end sequences on the encoding because segment is shorter but the
overal video project remains 90 minutes. So I went back to the current CVS
from this morning and changed back to 60 seconds on the segment lengths.
And now it builds again all the way through! The data rate is at 7500kbps as
reported by mplayer. I burned it to DVD and it still has the sound drop outs.
(also -b 300 was set) Also, Ogle once again is reporting errors in the e0
video stream.
Could my sound drop outs be from undected buffer overflows?
Since I created a script to run instead of typing the commands each time, I
will include it at the end as well. Perhaps you will see something that I should
not be doing and/or another way to create it that would not produce the errors.
> Looks like you've snagged the first bug that needs to be fixed
> before a release - congratulations!
~~~~~~~~~~~~
Thank you. I have long awaited an opportunity to do something worthwhile
in my life. I would just like to take this opportunity to offer my sincerest
gratitude to all the developers that have made this moment possible.
James
=======================================================================
bash-2.05a# cat doit.sh
#!/bin/sh
# Creates (10) 60 second videos of the jpeg image and encodes them.
# It cat's them together to create a 90 minute video sequence.
# The video is mulitplexed with the audio and the DVD is mastered.
rm *.mpg
rm *.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo0.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo0.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo1.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo1.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo2.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo2.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo3.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo3.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo4.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo4.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo5.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo5.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo6.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo6.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo7.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo7.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo8.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo8.m2v
jpeg2yuv -v 0 -n 30 -I p -f 29.97 -l 60 -j photo9.jpeg | mpeg2enc -v 0 -f 8 -b 6000 -n
n -o photo9.m2v
cat *.m2v > sequence2.m2v
cat sequence2.m2v > sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
cat sequence2.m2v >> sequence.m2v
mplex -v 0 -f 8 -r 7000 -b 300 -M -o video%d.mpg sequence.m2v audio1.m2a
rm -r output
dvdauthor -o output -x project.xml
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