FAQ/TIPS

• Build Tips:
  • In MacOS X, remove "-Wno-pessimizing-move" from CMakeLists.txt.
  • Use "Release" build instead of "Debug" build.
• Are the movements of test material artificial?

No, those are all natural movements. Objects are put under the water, whse surface is manually waved.

• I've mistakenly encoded the material with SEIDecodedPictureHash=0. Do I have to re-encode with that value being 1?

Not really. We have confirmed that setting SEIDecodedPictureHash to 1 increases 57 bytes/frame regardless of the video resolution; without affecting PSNR values at all. Just attach verbatim log files to your submission. We'll handle appropriately.

• Can we change the team name, members, contact person after registration?

Yes, of course. Please e-mail the Secretariat.

• Is the picture that should be provided used as some kind of long term reference picture by the encoder?

Yes, the picture should be used as some kind of LTR picture. i.e., the first frame (provided frame) is encoded/decoded first and kept as one of the reference frames thereafter.

However, our codec realizes that mechanism in similar (but quite ad-hoc) manner as LTR mechanism.

• Is shuffling of the video sequence allowed, e.g. is pre and postprocessing of the input/output of the encoder allowed?

No, it is not allowed. However, it sounds very interesting. You can provide the results as "FYI data".

• Is changing of the parameters of the encoder allowed?, e.g. QP, AI/RA/LD, etc ...

No, encoding parameters shall not be changed. Coding structure is Lowdelay B, QP=22-37. It is aimed for the participants to solely concentrate on picture generation.