need some mencoder/ffmpeg help
I am trying to get the right quality settings to do the following:
rip dvd chapters to file (using mencoder) in mpeg quality (so that its already in the form to turn back into dvd.
then, to encode into flash streaming file.
i have a bash script to loop through the chapters:
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd:tsaf \
-vf scale=720:480,harddup -srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=98 00:vbitrate=5000:\
keyint=18:vstrict=0:acodec=ac3:abitrate=192:aspect =4/3 -ofps 30000/1001 \
-o $1/$2/$i/$1_$2_$i.mpg dvd://$i
and then i do:
#convert to flv
ffmpeg -i $1/$2/$i/$1_$2_$i.mpg -deinterlace -s 640x480 -ar 22050 -r 25 -qmin 3 -qmax 6 -f flv - | flvtool2 -U stdin $1/$2/$i/$1_$2_$i.flv
the problem with the .FLV file is that with some movement, i am seeing pixelation. i tried setting qmin and qmax to 2.. it make a huge file, but there were still alot of pixelation.
the mpeg file didn't have pixelation.
i am guessing that maybe the mpeg file that i have created is the problem.
there are also a lot of different ways to tweak the flv encoding.
i have 2 ways to tweak, encode from DVD to the mpeg format for the later use of easily going back to DVD video, but then encode to another format that would be a better source material (ie. AVI file) for the FLV conversions.
seeing if anyone could help me with some parameters that would get high quality output.
Fight the googled out!
rip dvd chapters to file (using mencoder) in mpeg quality (so that its already in the form to turn back into dvd.
then, to encode into flash streaming file.
i have a bash script to loop through the chapters:
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd:tsaf \
-vf scale=720:480,harddup -srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=98 00:vbitrate=5000:\
keyint=18:vstrict=0:acodec=ac3:abitrate=192:aspect =4/3 -ofps 30000/1001 \
-o $1/$2/$i/$1_$2_$i.mpg dvd://$i
and then i do:
#convert to flv
ffmpeg -i $1/$2/$i/$1_$2_$i.mpg -deinterlace -s 640x480 -ar 22050 -r 25 -qmin 3 -qmax 6 -f flv - | flvtool2 -U stdin $1/$2/$i/$1_$2_$i.flv
the problem with the .FLV file is that with some movement, i am seeing pixelation. i tried setting qmin and qmax to 2.. it make a huge file, but there were still alot of pixelation.
the mpeg file didn't have pixelation.
i am guessing that maybe the mpeg file that i have created is the problem.
there are also a lot of different ways to tweak the flv encoding.
i have 2 ways to tweak, encode from DVD to the mpeg format for the later use of easily going back to DVD video, but then encode to another format that would be a better source material (ie. AVI file) for the FLV conversions.
seeing if anyone could help me with some parameters that would get high quality output.
Fight the googled out!