I like the actual system, even a simpler one. What kills me is cropping it "visually" and so stretching the image.
From the user perspective another option can be: select the source pixel aspect ratio for stretching, the target format, and manually adjust zoom. Add a vertical offset to compensate for subtitles on black or minimal pan&scan, and magic! :D

To the Magnus list, add the NTSC SD formats, and you get an even longer and evergrowing list of formats. (NTSC SD scope letterboxed: 268 pixels of height... I projected that last week)




On Sat, May 18, 2013 at 8:05 AM, Magnus Eriksson <telegrafverket@gmail.com> wrote:
In my (swedish) everyday work these situations are the most common:

Square pixels:
HD 16:9. 1920 x 1080 -> 1920 x 1080
HD 1:1,85 1920 x 1038 -> 1998 x 1080
HD 1:1,66 1793 x 1080 -> 1793 x 1080
HD 1:1,37 1480 x 1080 -> 1480 x 1080
HD 4:3 1436 x 1080 -> 1436 x 1080
HD scope. 1920 x 803 -> 2048 x 858
SD 4:3 768 x 576 -> 1436 x 1080
SD 16:9 letterboxed  768 x 431 -> 1920 x 1080
SD scope letterboxed 760 x 321 -> 2048 x 858 (nasty)

Non square pixels:
SD 16:9 anamorfic 768 x 576 -> 1920 x 1080

The numbers are calculated on my cellphone, please correct me if necessary.

Another alternative might be a checkbox "square pixels" combined with a sort of zoom or "fill aspect FLAT/SCOPE" function.
What I´m aimaing at is a scaling option that makes incoming picture fit into outgoing FLAT or SCOPE without any stretching or cropping. Stretching or cropping should be an active choice from the operator (assuming that he or she knows the consequences)

Some scope films has burned subtitles in the black bar. A "manual" or "custom" choice would be necessary to handle those.

/M.E.

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