RE: [xine-devel] DVD questions

[Jerome P. <je...@ki...>]

Thank you for the information. The problem I have with this particular
DVD is that it is in 4:3 on the DVD but it is a widescreen edition. So
they encoded the black bars on the DVD itself. I used libdvdnav to
analyze the structure and it says it is 4:3. Also in the ifo_types there
is a flag letterboxed, but this one is always set to 0 apparently.

So I'm guessing for this particular DVD I would have to have the user
ask for cropping and won't be able to have the frontend do it
automatically.

Anyone could confirm ?

Then we go on the other questions, how do I do that using libxine API.

Thanks

On Wed, 2005-03-02 at 13:37 -0500, Mathieu Routhier wrote:
> Jerome,
> 
> First, you have to be aware that there are many different aspect ratios in
> movies (see
> http://www.geocities.com/SiliconValley/Bay/2933/favaspectratio.html), but
> that the DVD standard defines only two possible aspect ratios: 4/3 and 16/9.
> So whenever the original movie was shot in a different aspect ratio than
> those two, the DVD will have black bars on the frame itself (it wont be the
> player or the TV that adds them to fit the TV aspect ratio).
> 
> For example, a movie shot in 2.35 will appear on a DVD with an aspect ratio
> of 16/9 and will have black borders to fit 2.35 into 16/9.  Then if you have
> a 4/3 TV, there will be more black borders added to fit 16/9 into 4/3.
> 
> There are flags on the DVD that tell what the aspect ratio of the content
> is: 4/3 or 16/9.  However, I am not aware of any flag saying whether black
> borders were added to fit a higher aspect ratio into 16/9.
> 
> Mat
> 
> 
> -----Original Message-----
> From: xin...@li...
> [mailto:xin...@li...] On Behalf Of Jerome Poichet
> Sent: Wednesday, March 02, 2005 1:08 PM
> To: xin...@li...
> Subject: [xine-devel] DVD questions
> 
> Hi,
> 
> I have some questions regarding DVD playback.
> 
> It seems from my testing that angles are not really working. It will go
> through the angles (from a title point of view) but the image is always
> the same. Is that just for me or is this a known issue ? I have
> experienced this with special feature disc of X-men 1.5 when they
> analyze the final scene on different angles.
> 
> Also I'm having some issue with A Fistful Of Dollars. This is a 2-side
> DVD, one side is fullscreen, the other one widescreen. Though the
> widescreen version is actually a 4:3 letterboxed version, so on a
> widescreen TV it looks pretty bad, since there are black bars
> everywhere. I'm working on my own frontend and I was wondering if there
> was a way to fix this problem automatically. From my understanding there
> should be a flag on the DVD that says it is letterboxed, then when this
> flag is detected then I guess the image could be cropped. libxine is
> great at keep the aspect ratio whatever the output or the input is, so
> once cropped I'm sure the image would look good on a widescreen or
> fullscreen screen.
> 
> Finally I remember seing a PAN&SCAN parameter to the "zoom" function and
> I was wondering what happened to this feature ? How do I do pan&scan
> now ?
> 
> Thank you, and keep up the good work.
> 
> Jerome
> 
> 
> 
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now.
> http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
> _______________________________________________
> xine-devel mailing list
> xin...@li...
> https://lists.sourceforge.net/lists/listinfo/xine-devel
> 
> 
> 
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now.
> http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
> _______________________________________________
> xine-devel mailing list
> xin...@li...
> https://lists.sourceforge.net/lists/listinfo/xine-devel
> 
> !DSPAM:422607d7205791665835430!
>