[mythtv-users] Crop in Transcode?

Kevin Kuphal kuphal at dls.net
Thu Apr 26 01:12:11 UTC 2007


Robert Current wrote:
> On 4/25/07, Rod Smith <mythtv at rodsbooks.com> wrote:
>   
>> mencoder -vf kerndeint,softskip,crop=720:360:0:60,scale=720:480,hard
>> dup -ofps 30000/1001 -aspect 1.7777 -ovc lavc -lavcopts
>> vcodec=mpeg2video:vrc_bu
>> f_size=1835:vrc_maxrate=9600:vbitrate=${vbitrate}:keyint=18:turbo:trell:dc=10:au
>> toaspect=1 -oac lavc -lavcopts acodec=ac3:abitrate=192 -of mpeg
>> -o ${dest} ${src}
>>     
>
>
> Well I figured out my OTA HD recording of Simpsons episode was
> 1280x720, then I ran this command on the file:
>
> mencoder -vf \
> kerndeint,softskip,crop=960:720:160:0,scale=720:480,harddup \
> -ofps 30000/1001 -aspect 1.7777 -ovc lavc -lavcopts \
> vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9600:\
> vbitrate=4771000:keyint=18:turbo:trell:dc=10:autoaspect=1 \
> -oac lavc -lavcopts acodec=ac3:abitrate=192 -of mpeg \
> -o NEW-1111_20070424170000.mpg 1111_20070424170000.mpg
>
> The output was exactly what I was looking for, it converted the
> 1280x720 file with black bars on the right and left to a nice small SD
> like file at 720x480 that played back with ease.
>
> I still haven't figured out how to get the file stats by command line
> to see if it's a 1280x720 video to start with.  Once I can do that,
> I'll try to make it a script file, so I can put it in my User Jobs...
>   
As a suggestion, you could just make multiple user jobs and set the 
recording schedules you know to be of like resolution to use the 
appropriate job...

Kevin


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