[MPlayer-users] MPlayer-1.0pre8 detecting wrong aspect ratio

[Nico Sabbi]

Giacomo Comes wrote:
>>> I use a script for encoding with mencoder. The script reads the aspect
>>> ratio from the output of -identify. Now with this problem, the script
>>> fails to detect the aspect ratio, and I am having to provide it
>>> manually.
>>>       
>> if it's wrong it's wrong
>>     
>
> No Nico,
> 1.0pre8 and current svn have a BUG.
> The bug consists in the fact that mplayer does not detect correctly the
> aspect ration of MPEG1 streams.
>
> Example 1: 4/3 (1.33:1) PAL MPEG1 stream
> VIDEO:  MPEG1  352x288  (aspect 2)  25.000 fps  1152.0 kbps (144.0 kbyte/s)
>
> 1.0pre8 plays it as:
> Movie-Aspect is 1.81:1 - prescaling to correct movie aspect.
> VO: [xv] 352x288 => 522x288 Planar YV12
>
> 1.0pre7 plays it as:
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 352x288 => 384x288 Planar YV12
>
>
> The bug is not limited to 4/3 aspect ratio. Also 16/9 is misdetected.
> As already said, this bug breaks also any script that use mplayer to retreive 
> the aspect ratio of a movie (therefore a quick fix is welcome).
>
> Giacomo
> _______________________________________________
>   

what I changed in pre8 is the assignment of the A/R code; I moved it 
from the
demuxer domain (where it was totally out of place) to the video decoder 
layer
(where it belongs).
Previously the A/R assignment was completely wrong for mpeg1, because it 
was
assigned as for mpeg2.

Post some link to samples and we'll see what we can do :)