On Fri, 17 Sep 2004, Norayr Chilingaryan wrote:
> http://www.geocities.com/nemrout/convert.html
>
> Please, look there, and tell me what U think...
> It seems that second picture deformed and much cropped...
It is _supposed_ to be deformed ;)
When you play it back on a DVD/CD player the picture appear correct.
> I get it with
> lav2yuv lalala.avi | y4mscaler -I sar=1:1 -I ilace=TOP_ONLY -O sar=PAL -O
> size=704x576 -S option=sinc:4 | mpeg2enc -f 8 -q 4 -s -o video_temp.m2v
> AsI understand it is a proper string for DVD capable mepg stream encoding
No, you have a weird mixture of VCD and DVD options in that command.
In this case, are you creating a VCD or a DVD? For a DVD you do NOT
want the "-I ilace=TOP_ONLY" option! Basically what you have done
with that (extra) option is throw away 1/2 of the information - that is
why the picture appears cropped.
For creating a DVD do not use the '-I ilace' option.
> it seems that when I try to get vcd capable mpeg1 stream with
> lav2yuv lalala.avi | y4mscaler -I sar=1:1 -I ilace=TOP_ONLY -O sar=PAL -O
> size=352x288 -S option=sinc:4 | mpeg2enc -f 1 -s -o video_temp.m1v
>
> there is no such crop, but picture seems(?) deformed ;(
As I mentioned earlier - that is 100% normal. Pixels are square on
a computer but are not square on a DVD/VCD/TV. The picture will
look fine on a TV or if you use 'mplayer' to play the movie.
> As far, as I understand, the best way is a second screenshot...
> But it is not correct...
Yes, it is indeed correct. Put the video on a disc and play it - OR
'mplayer' will play the movie
> So, please, view screenshots and tell me, which way is best...
If you leave out the '-I ilace' option for the DVD then both ways
are "best". It all depends which format you want - DVD or VCD. For
DVD:
lav2yuv lalala.avi | \
y4mscaler -I sar=1:1 sar=PAL -O size=704x576 -S option=sinc:4 | \
mpeg2enc -f 8 -q 4 -s -o video_temp.m2v
and for VCD:
lav2yuv lalala.avi | \
y4mscaler -I sar=1:1 -I ilace=TOP_ONLY -O sar=PAL -O size=352x288 -S option=sinc:4
| \
mpeg2enc -f 1 -s -o video_temp.m1v
Cheers,
Steven Schultz
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