[mythtv-users] Struggling with MythArchive

[John Pilkington]

>
> The command line that I quoted in #11297 was
>
>   mythffmpeg -threads 2 -v verbose -i
> "/home/john/Mythrecs/1102_20121207205600.mpg" -target pal-dvd -b:v 6000k
> -s 720x576 -acodec mp2 -b:a 256k -ac 2 -aspect 16:9
> "/mnt/MythOnRoot/Mytharch_work/work/1/newfile2.mpg"
>
> That worked, but you may want to change mp2 to ac3, and it uses only the
> main stereo audio channel.
>

This was for re-encoding a BBC-HD  DVB-T2 recording to a DVD-type 
format. On my "Centrino Duo" laptop ~2006 I typically see 25 to 30 fps. 
  The -b:v parameter seems to be ignored, or more likely treated as an 
upper limit; the output size is probably determined by a q value 
typically shown as 2.0 that is likely to be part of the pal-dvd 
parameter package.  It's probably explained somewhere in the ffmpeg docs 
but my Google-fu didn't find it.

Another comment:  if the output is further shrunk by m2vrequantiser 
within MythArchive, the shrink factor is exact.  Usually, when I start 
from DVB-T SD, there's an overshoot by around 1 percent.

HTH

John P