Interlaced scaling is broken

[premultiply]

When scaling interlaced content just one field is used for deinterlacing leading to very poor resolution on static picture parts (fonts, edges etc.) while upscaling SD content for example.

SVT builds are using proper adaptive field/frame deinterlacing.

[jaskie]

Can you provide me with configuration and steps to reproduce this behavior? It can be observed while decoding a file, encoding a stream or yet another case?

[premultiply]

It can be reproduced by playing SD clip on HD 1080i5000 decklink channel.
Just take a clip with static text or logo content with diagonal edges over video and compare the result to the SVT builds.

[jaskie]

With which specific SVT's build (2.0.6 or 2.0.7...) your comparison is?

[premultiply]

http://casparcg.com/builds/CasparCG%20Server/2.1.0/CasparCG%20Server%20f15ba601fe06a7f57512c14c5958cadebf56d970_windows.zip
and
http://casparcg.com/builds/CasparCG%20Server/master/CasparCG%20Server%20aecd9cf02724299b6c23067639e363f1ca032ba1.zip

[jaskie]

Finally fixed in d409a07.