[mythtvnz] Good parameters for mencoder conversion of TV3 Myth recording to DivX?

[Steven Ellis]

Matt Poff wrote:
> Hi,
>
> I've been trying to set-up a good mencoder command string to
> downsample and convert some TV3 recordings but i'm getting some weird
> aspect ratios with the result...
>
> The first string i tried was this:
>
> |mencoder -o FILE.avi -of avi -ffourcc DX50 -lavcopts vbitrate=750:vhq
> -ovc lavc -oac mp3lame -vf pp=lb FILE.mpg
>
> But the results were an almost square picture area (squeezed
> anamorphic?) with a lot of black space around the frame. I tried using
> the autocrop feature to detect  picture boundaries:
>
> ||mencoder -o FILE.avi -of avi -ffourcc DX50 -lavcopts
> vbitrate=750:vhq -ovc lavc -oac mp3lame -vf cropdetect FILE.nuv|
>
> Still the same problem. The generated output is 720x576 in both cases.
> Does anyone have any settings they use to get correct aspect ratio
> transcodes from TV3 recordings?
>
> Thanks,
> Matt
Your problem is the input is 720x576 tagged as 16:9.

You can either tag the DivX as 16:9, or resize the input to a reasonable
16:9 size during conversion

Steve

-- 
Steven Ellis - Technical Director
OpenMedia Limited
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