Re: Setting the right parameters for Matroska Stereo 3D

Leaving it as is should be fine as the input and output pixel width
are the same.

On Thu, Oct 14, 2010 at 8:53 PM, Jörg Knitter <[email protected]> wrote:
>  Hi Steve,
>
> thank you very much for your clarification.
>
> Concerning 2): I refer to the "aspect ratio" setting in MKVmerge GUI. Should
> I leave this empty?
> I just have checked the MKV specs and haven´t seen any aspect ratio
> parameter, so now I really don´t understand the sense of this option - or is
> this also a deprecated field?
>
> With kind regards
>
> Joerg
>
> Am 14.10.2010 20:30, schrieb Steve Lhomme:
>>
>> 1: Yes you can use the StereoMode field with the value 1. It's an
>> integer and mkvmerge probably doesn't check the value is in a valid
>> range.
>>
>> 2: The aspect ratio is defined by the ratio the
>> DisplayWidth/DisplayHeight. And the way to tell the geometry of the
>> side-by-side videos is using the same fields. So you don't have to
>> worry about the aspect ratio. It is what you put in the
>> DisplayWidth/DisplayHeight
>>
>> 3: It's likely your pixel size is 1920x1080, each side being 960x1080.
>> But the output should also be 1920x1080 (horizontal stretching). So
>> you should use 1920x1080 for the PixelWidth/PixelHeight and
>> DisplayWidth/DisplayHeight as well. The fact that the video is marked
>> as side-by-side means the decoding system has to cut the 1920x1080
>> picture in 2 at the middle.
>>
>> Steve
>>
>> On Thu, Oct 14, 2010 at 1:57 AM, Jörg Knitter<[email protected]>
>>  wrote:
>>>
>>>  Hi,
>>>
>>> I want to make a 3D-side-by-side MKV that corresponds to the latest
>>> Matroska
>>> standardisation. But I have several questions, and I want to make sure
>>> that
>>> everything is set right:
>>> 1) Can I use the "old" StereoMode field with mkvmerge GUI and simply set
>>> it
>>> to "1" for "side-by-side; left video first" which corresponds to the
>>> "old"
>>> "left-eye" setting? If I read correctly, you first wanted to abandon the
>>> "StereoMode field" and now even improved it with the new options which
>>> unfortunately do not fit to the old ones...
>>> Or do I really have to wait for the new releases?
>>> 2) If the source video is full hd and side-by-side so that the picture of
>>> every eye gets only the half horizontal resolution (like 3D TV), does the
>>> aspect ratio still have to be 16:9?
>>> 3) What display size do I have to enter? The final display size
>>> (1920x1080)
>>> or the size of the image that has to be displayed for every eye and
>>> scaled
>>> by the player, in this case 960x1080?
>>>
>>> With kind regards
>>>
>>> Joerg Knitter
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