question about pal and progressive

[awe007]

hi,

i´m still a littel bit confused about my genreted avs script. i´m using df4u, docce, reauthorist. with the help of the full dvd backup guide i tried to backup an old dvd. two strange things happend.


the first belongs to the aspect ration. the dvd cover says 1:1,85 (16:9) but the m2v file and therefore the docce4u settings are 4:3. strange thing. i thought doitfast automatically detects the right ascept ratio?

because im living in europe most of our dvd are progressive. in doitfast i diasbled the ntsc detection (because my dvd is pal). the genereted avs script contains "convertToYUY2(interlaced=true). is this command correct for progressive pal movies? in my opinion it isn´t. i´m confused because i don´t know why dif added this command. in fact i didn´t check the "interlace" option. perhaps someone can give me some information about the things that had to be changed in the avs script when dealing with progressive material...


thx for the help and a nice weekend...

frank

[Master Yoda]

Im not sure whats wrong with the aspect, it may be that is is 16:9 but not anamorphic, so its letterboxed.Like a film called Leon, the box says its 16.9, but the movie its self is 4.3 because its letterbox.

ConvertToYUY2(interlaced=true), this wont affect of damage the progressive film, well i dont think so.Its defualted to interlaced=true, this way if you have a interlaced source its already set, where if it was just ConvertToYUY2 u may forget to and interlaced=true. But you can change it if you want, for progressive use ConvertToYUY2(interlaced=false)

[awe007]

hi,

thx for the info....the thing with interlace=true is ok. hmm the thing with the aspect ratio still is strange. it is an old dvd called "stalingrad" (old german dvd). do i have any options to tell doitfastforyou that it is dealing with a 16:9 ? or perhaps just changing from 4:3 to 16:9 in the docce4u settings..??


thx

frank

ps good to know that there are some other pal user..:-))

[Master Yoda]

The aspect.On the case it says its widescreen, but on the dvd itself its stored fullscreen.This is because its not anamorphic.Its letterboxed.Leon is the same.

[RobertR]

I guess what confuses awe007 is non-anamorphic 16:9 against anamorphic 16:9. The first one has black bars at top and bottom of video (so it's letterboxed ;)). There is nothing realy wrong with this (except you are loosing some bitrate to encode those black bars). Have a look at generated m2v files in some software dvd player to verify this. DIF4U doesn't realy use aspect ratio info. It just passes it either to RA or to DoCCE4U/BatchCCEWS. If DIF4U is wrong (very unlikely as it would mean bad authoring of orignal dvd) you can change aspect ratio in DoCCE4U/BatchCCEWS.

On a side note there are much more PAL users here than just 3 of us ;)

[arlsair]

Originally posted by RobertR
The first one has black bars at top and bottom of video (so it's letterboxed ;)). There is nothing realy wrong with this (except you are loosing some bitrate to encode those black bars).
This black bars don`t need much bitrate, but the difference is the vertical resolution.
For non-anamorph you have black bars (ca. 72 pixels each) so the vertical resolution is 432 pixel. For anamorph the vertical resolution is full 576, which costs more bitrate, but gives also a better, more detailed picture.