[theora-dev] ffmpeg2theora aspect ratio

j at v2v.cc j at v2v.cc
Thu Dec 3 16:31:15 PST 2009

On 12/03/2009 11:11 PM, Stefan Bender wrote:
> Hi,
> I discovered the following lines in ffmpeg2theora.c (~l.550):
>     if ((float)this->aspect_numerator/this->aspect_denominator < 1.09) {
>         this->aspect_numerator = 1;
>         this->aspect_denominator = 1;
>         frame_aspect=(float)(this->aspect_numerator*this->picture_width)/
>                             (this->aspect_denominator*this->picture_height);
>     }
> This prevents the correct display of video that has an pixel
> aspect ratio of 1.09, which is the ratio with which some dvb
> content is delivered.
> This code was introduced in svn revision 14125 and was
> whitespace corrected in svn revision 15823 and my question is
> what is the purpose of this code?
> Or: what is expected to break if these lines are removed?
> The encoding of dvb content, at least, works better without it.
i had some footage where this was used.
but i think it should be take out, will review it and take it out if i
can not find a good reason for it to be there...


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