Screening formats guide
- When a computer is used as a broadcast medium, all resolutions are possible, from the lowest to the best.
- But all computer media used without the appropriate video cards (Blackmagic, AJA, Matrox …) face similar problems, and are therefore not recommended as a screening device.
- Quality: it is possible to encode video quality far superior to that of a DVD, and easy to download with the H264 format (a variant of MP4)
- Diversity: From the master of the film, all encodings are possible: Quicktime, AVI, FLV, MPEG-4, H264, etc. …
- Plurality of delivery modes: DVD 'data', the web, ftp, by email, USB key, hard drive, etc … Computer media are increasingly used as the medium for selecting films for festivals.
- Cheap to tansmit and distribute.
- Rates: the video is at 25 frames per second, film at 24. Computer screens and mobile devices operate at frequencies between 60 and 120 Hertz. Because of the mismatch in rate, camera movements are generally not as fluid on a computer medium.
- Couleurs et gamma : les ordinateurs ne sont pas de fidèles lecteurs vidéos et distordent les couleurs et le gamma, y compris les logiciels dont on attendrait le plus de fidélité : Quicktime, Final Cut Pro sans carte vidéo, Lecteur DVD, Itunes, etc.