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Are you sure? yes no
mencoder: Increase volume using af filter?
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Yes, mencoder is not maintained anymore, but I also want to increase
brightness and haven't yet divined the ffmpeg incantations for that.
Google has shown me how to do it using lameopts, but I'm using lavc.
This does not appear to increase the target volume by 10dB.
mencoder \
-oac lavc \
-ovc lavc -of mpeg \
-mpegopts format=xsvcd:tsaf -vf scale=480:480,harddup,eq2=1.0:1.0:0.2 \
-srate 44100 \
-af lavcresample=44100:volume=10 \ <<<<<<<<<<<<<<<<<<<<<<
-lavcopts vcodec=mpeg2video:<snip>:acodec=mp2:abitrate=224:aspect=4/3 \
-ofps 30000/1001 \
-mc 0 -noskip \
-o "${N}_svcd.mpeg" "$1"
What am I doing wrong?
On Mon, Jul 02, 2012 at 12:15:14PM -0500, Ron Johnson wrote:
> Yes, mencoder is not maintained anymore, but I also want to increase
> brightness and haven't yet divined the ffmpeg incantations for that.
>
> Google has shown me how to do it using lameopts, but I'm using lavc.
>
> This does not appear to increase the target volume by 10dB.
>
> mencoder \
> -oac lavc \
> -ovc lavc -of mpeg \
> -mpegopts format=xsvcd:tsaf -vf scale=480:480,harddup,eq2=1.0:1.0:0.2 \
> -srate 44100 \
> -af lavcresample=44100:volume=10 \ <<<<<<<<<<<<<<<<<<<<<<
> -lavcopts vcodec=mpeg2video:<snip>:acodec=mp2:abitrate=224:aspect=4/3 \
> -ofps 30000/1001 \
> -mc 0 -noskip \
> -o "${N}_svcd.mpeg" "$1"
>
>
> What am I doing wrong?I think you trying to set the "volume" option of the lavcresample filter
(I don't think it has one).
I think you want instead to have an additional volume filter, so it
must be ",volume" instead of ":volume".
Also both -srate and -af lavcresample is rather overkill, either one of
them is enough to change the sample rate.
On 07/02/2012 01:17 PM, Reimar Döffinger wrote: > On Mon, Jul 02, 2012 at 12:15:14PM -0500, Ron Johnson wrote: >> Yes, mencoder is not maintained anymore, but I also want to increase >> brightness and haven't yet divined the ffmpeg incantations for that. >> >> Google has shown me how to do it using lameopts, but I'm using lavc. >> >> This does not appear to increase the target volume by 10dB. >> >> mencoder \ >> -oac lavc \ >> -ovc lavc -of mpeg \ >> -mpegopts format=xsvcd:tsaf -vf scale=480:480,harddup,eq2=1.0:1.0:0.2 \ >> -srate 44100 \ >> -af lavcresample=44100:volume=10 \ <<<<<<<<<<<<<<<<<<<<<< >> -lavcopts vcodec=mpeg2video:<snip>:acodec=mp2:abitrate=224:aspect=4/3 \ >> -ofps 30000/1001 \ >> -mc 0 -noskip \ >> -o "${N}_svcd.mpeg" "$1" >> >> >> What am I doing wrong? > > I think you trying to set the "volume" option of the lavcresample filter > (I don't think it has one). > I think you want instead to have an additional volume filter, so it > must be ",volume" instead of ":volume".I should have known that, from looking at the -vf options. Thanks. And yes, that did the trick.> Also both -srate and -af lavcresample is rather overkill, either one of > them is enough to change the sample rate.Which is, to use that hateful PHB phrase, "best practice"?