Tests proving that 24sps (samples per sec.) are not necessary for a 24fps realtime verificationĭoremi (now Dolby) Cineplayer offers this option. On the temporal resolution side I can show you 8sps and 12sps On a 15" screen, the j2k decoding "lowres-1" (1kpixel/line) is more than enough,Ģkpixel resolution is a waste. Lower resolution is more acceptable than lower frame rate. and amazed by the plasticity of their brain We had to show them the Oude-Delft modified 16mm projectorīefore a second passage to make them more scrutinizing. Nobody could see any artifacts on the 12sps shots, only a few people felt something We projected at 24fps three similar sequences of a film about Tango dance respectively shotĪt 24, 12 and 8sps. **In 1969 at Eclair Corp of America we made an experiment with non warned cinemagoers in LA. Would this 'light playback' be acceptable for those of you in charge of cinema festivals DCP control? (focus-puller swiftness and precision is not our job here.)
#CINEPLAY PLAYER VERIFICATION#
To produce SD images with more than enough resolution for the 15" screens we use for DCP verification (B) do not convert the upper tiles of the jpg2000 images, only use the low level tiles, e.g. Smooth enough** to allow the verification of audio/subtitle sync. This makes for an 8 samples per sec film which projected at 24fps shows realtime movements (A) convert only one frame every three and repeat it 3 times on the display side To eliminate the looong j2k conversion which shokes slow-CPU laptops : Option, by using two simple methods (A) lower temporal sampling, and (B) lower resolution, To avoid this I asked VLC (HandBrake wiil follow) if they can add a faster than realtime "DCP light playback"
Is used for the realtime verifications.(kind of an overkill isn't?) Or sync+level+dispatch audio problems, 20% of them must be corrected and re-encoded.ĭcp-o-matic is heavily used for these corrections, and the Sony 4K SRX-R320 projector of the Cinémathèque They should be delivered as 'conform' to DCP rules but in practice, because of improper subtitles Among 4000 films the Grenoble Open Air festival selects ninety short-form films per year.
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