Hi again,

  I want to finish my analysis about rendering anamorphic MPEG with my last
tests.

  Cinelerra works fine with anamorphic video as Ichthyostega told when your
target video was MPEG video too. If you choice another format like MOV, it
uses the w-h size from Format window without attend aspect ratio, rendering
a 4:3 720x576 video.

  In conclusión, make a batch render file for creating a MPEG2 video based
on AC3 + YUV4MPEG stream (using pipe mpeg2enc) + mplex, cinelerra's manual
explain that. When finish, you can convert .mpeg to another formats with
ffmpeg, mencoder,... if you want.

Greetings.


2009/9/27 Artenaut End of world <[email protected]>

> Hi Ichthyostega,
>
>   You right!! I don't know why in my test I can't get the expanded
> anamorphic video, but I just try it again and it works. At least, I have
> more knowledge about tracks, although, there is still a lot of concepts to
> learn.
>
> Thanks a lot.
>
>
> 2009/9/26 Ichthyostega <[email protected]>
>
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>> Artenaut End of world schrieb:
>> > When I opened the source video on Cinelerra, it's played in 720x576 both
>> > Viewer window and Compositor window insted of 1024x576 as mplayer do.
>> > Perhaps, because Cinelerra process the source video like data, so
>> 720x576.
>>
>> Cinelerra doesn't automatically set up an aspect ratio for the project.
>> Usually, when you're going to do a project, which is mostly based on
>> anamorphotic footage, you set up the correct aspect ratio for the
>> whole project. If you use a non-standard aspect ratio, this has impact
>> on other areas like titles, included stills and included non-anamorphotic
>> footage (ideally, a video editor should adjust those automatically,
>> but Cinelrra doesn't you have to care yourself for that).
>>
>> Probably that's the reasoning behind why Cinelerra doesn't do this
>> setting for you.
>>
>> > Finally, this week I resolve the problem and now the Compositor window
>> show
>> > 1024x576 complete image: - first, resize vdeo track to complete image
>> size
>> > 1024x576 - second, use Scale effect and setting x to 1.7778.
>>
>> Sure, this works, but it causes additional processing and might even
>> degrade
>> your output quality. Thus, you should use this approach only for the
>> minority
>> of your footage, i.e. when you want to insert one anamorphotic clip into a
>> lot of non-anamorphotic footage.
>>
>> If most of your footage is anamorphotic, you should instead define your
>> project accordingly, i.e. set the correct aspect ratio in Settings>Format
>> If you do so, the viewer and the compositor will stretch your footage
>> on display, but no processing happens on the rendered output.
>>
>> hope that helps
>> Hermann Vosseler
>>
>>
>>
>>
>>
>>
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