[mythtv-users] myth video settings
Yan-Fa Li
yanfali at best.com
Mon Nov 1 21:37:23 UTC 2004
Stephen Tait wrote:
>
> However, I'm unsure as to what your problems with AVI's is. I have quite
> a few old rips that I haven't redone yet that are still in AVI (as well
> as some cartoons off the net), and have never had a problem with aspect
> ratio, although I use Xine FWIW.
>
From the mplayer documentation:
<quote>
One important feature of MPGs is that they have a field to describe the
aspect ratio of the video stream within. For example SVCDs have 480x480
resolution video, and in the header that field is set to 4:3, so that it
is played at 640x480. AVI files do not have this field, so they have to
be rescaled during encoding or played with the -aspect option.
</quote>
This is a problem specifically with 16:9 formatted material. There is
more than one aspect ratio. The two most common being 1.85:1 and 2.35:1
for movies in letterbox format. AVI apparently is unaware of this
distinction. I even have one disc, 24 season 1, that is formatted
1.78:1 or something odd like that.
Many thanks for responding though. The search continues. Maybe Xine is
smarter and actually works out the ratio based on the dimensions of the
encoding. Mplayer has to be told for AVI.
Yan
More information about the mythtv-users
mailing list