On Sat, 11 Oct 2003, Maik Holtkamp wrote:
> I never noticed this cvd and just had a short introduction on
> dvdrhelp.com. Sound intressting. But I alreay produced some coasters
> trying to put svcd 16:9 in my hardwarebox.
>
> Do I have a chance that my hardware player will accept 16:9 cvd if
> as it does not support wide on svcd?
I will reply to both Maik and Nicolas at the same time (saves
an extra mail item ;))
Creating 16:9 SVCDs is legal BUT neither of my hardware players
(which handle normal SVCDs fine) can play wide screen SVCDs.
It is not necessary to carefully calcualte the sample aspect
ration (SAR)!
Here's a little secret. The encoder (mepg2enc) uses the input SAR
for exactly 1 thing: to attempt to deduce the display aspect ratio
(DAR). IF the input SAR is carefully calculated the input frame size
and SAR will give a DAR of 16:9
There is a MUCH easier way to create widescreen CVD or SVCD. Simply
scale the data using y4mscaler (or yuvscaler) and then specify
"-a 3" to mpeg2enc. That will override the calculations mentioned
above and set the DAR in the MPEG-2 stream to 16:9
... | y4mscaler -O size=352x576 | mpeg2enc -a 3 -f 4 ...
Try it - it works fine. But 16:9 SVCDs have played correctly only
with software players for me.
Cheers,
Steven Schultz
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