[MPlayer-dev-eng] hdtv decoding (Decoding Euro 1080)
mplayer at hzoli.2y.net
Sun Dec 28 03:34:00 CET 2003
> I know this is a litle off-topic but: I want to decode a HDTV MPEG2 PS
> with mplayer (Euro 1080 transmission via Astra 19.2). However I get a
> choppy output and warnings every second or so:
What do you mean by choppy? Is your machine fast enough for HDTV? I
need to use -framedrop and -vop field on my 1.73GHz Athlon to watch US
ATSC 1080i broadcast using nForce2 integrated video with -vo xv and
the nvidia driver. Using xvmc may help, but so far I had no luck with
xvmc, and I did not have time and interest to investigate why. I
usually prefer to re-encode HDTV to MPEG-4 at 1024x576 resolution
(which is the resolution my 32 inch monitor supports). This also
allows applying filters like hqdn3d, de-interlacing etc, which I
cannot do real-time because my CPU is too slow.
> size restrictions for MP at ML or MPEG1 exceeded! (1920x1088)4% 66.5% 62 0 1%
Those are just warnings, they do not affect anything in the decoding
process, and I think they should be removed from mplayer.
> can the size restriction warning above being turned off somehow ? I
Yes, edit the source code and recompile. That's what I did.
> suppose mplayer is right and Euro1080 is somewhat transmitting out of
> spec but this way mplayer could be used for some real high definition TV
No, 1080 is perfectly fine standard MPEG-2, but it's MP at HL. Actually
I thought that 1920x1080 is the US HDTV standard, the European
standard is supposed to have 1152 lines at 25Hz frame rate. I guess
Euro1080 is using 1080i because it makes it easier use 1080i content
from the US.
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