Interlaced scaling is broken

jaskie / Server

This fork of CasparCG Server contains enhancements used in broadcast play-out system used in TVP.

http://playoutautomation.tvp.pl

GNU General Public License v3.0

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Interlaced scaling is broken #1

Closed premultiply closed 5 years ago

premultiply commented 7 years ago

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 commented 7 years ago

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 commented 7 years ago

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 commented 7 years ago

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

premultiply commented 7 years ago

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 commented 5 years ago

Finally fixed in d409a07702bdbeb0732c3105971fc9481918ffbd.