Interlacing
From CasparCG Wiki
Please note: This page currently only has information about version 1.8.
Please see Category:CasparCG_Server_2.0_pre-release for info about the CasparCG Server 2.0 alpha version.
You can have interlaced output of both dynamic Flash content and pre-rendered videos and images to SDI, HD-SDI or HDMI via several available consumers.
Videos with interlacing cannot be de-interlaced at run-time in the current version of CasparCG Server.
Interlacing via the Flash Producer
By changing the frame rate in the Flash Document Properties inside Adobe's Flash Professional to twice the normal rate, the Flash Producer and an SDI Consumer will output interlaced dynamic output. Please see the tables in the Frame Rates section for examples and guidelines.
The current version of CasparCG Server assumes that interlaced output via the Consumers should be made with upper/odd field dominance if an interlaced output preset is chosen in the Bluefish Feature App.
Interlacing via the FFmpeg Producer
The current version of CasparCG Server assumes that interlaced output should be made with the PAL-centric upper/odd field dominance. Therefore the FFmpeg Producer has a DV field dominance switcher function that is automatically used on all DV files, whereby the first row of the image is discarded. The result is that all DV files (both interlaced and progressive) will be shifted 1 pixel upwards.
If you render to a DV codec with upper/odd field dominance, this automatic field dominance switcher function will result in an incorrect output with a jumpy result. Note that DV should always be progressive or lower/even field dominance (with the notable exception of Avid DV50,) so this should not cause any real-world problems.
The DV field dominance switcher function cannot be controlled or turned off in the current version.
