! 14:9 14 1.556 2 14:9 aspect ratio compromise between 4:3 and 16:9, acceptable on both used to shoot ads ! 3:2 13.5 1.5 common digital cameras NTSC DV still camera photos, classic 35mm film (36x24mm), DSLR 4圆" prints VistaVision film Game Boy Advance, some tablets paper format JIS-B paper formats DV-NTSC 720x480, 1920x1280, 2400x1600 ! 1:1 9 1 square classic Kodak photos, large-format photos instagram shows well in both display orientations also slide projectorsģ2:27 10.6 1.185 compressed for cameras DVCPRO HD 640x540, 1280x1080ġ9:16 1.1875 "Movietone ratio", 1926-1932 when film converted to sound sdtv_aspect matches 1/2/3, undocumented for others. RPi is the aspect_ratio ID for Raspberry Pi video configuration. It used to be 60 or 30 Hz.Ĭolor broadcasting required shifting the frequency by 1/1001 to avoid interference patterns. NTSC framerates are often weird fractions like 59.94 Hz (p) or 29.97 Hz (i). In the old dying field of SDTV, the more common variants are 525i and 625i, interlaced NTSC and PAL.Ĭhoice depends on the scope of reference - displayed image vs transmitted signal. a NTSC can be also called 525p, as the 480 visible lines are part of total of 525 lines.
#Oxenfree game frequency 60.8 tv#
To confuse things, in the area of TV signals the resolutions are typically listed in active/visible pixels,īut the signal types are often referred to by their total lines. Total = height + front porch (v) + vsync + back porch (v) Sync end = height + front porch (v) + vsync Total = width + front porch (h) + hsync + back porch (h) Sync end = width + front porch (h) + hsync can be used to force custom resolutions slightly smaller than screen without putzing with display timingįrame rate = PixelClock / ( Htotal * Vtotal ) if enabled and nonzero overscan shrinks the available framebuffer, it is the former Overscan - black pixels/lines on the sides usually eats into the active area, or maaaaay be taken out of the porches the total lines MUST be odd for interlaced modes there is a vertical porch-synch-porch in the middle of the frame, and one extra scanline to shift the half-image introduces various artefacts, lower-quality than progressive scan half the lines for the same vertical frequency (at half the frame rate) that's critical to flicker, half the data, half the bandwidth Interlacing - "i", each frame consists of two halves, showing odd and then even lines Progressive scan - "p", each frame is drawn separately in one go positive, "+", for rising edge-falling edge (less common) Sync polarity - negative, "-", for falling edge-rising edge (timing on falling edge) calibration signals, teletext, copy-restriction, and other data commonly in the invisible lines in back porchįront porch, back porch - period before and after sync pulse Vertical blanking interval (VBI) - number of front-porch lines + hsync pulse length + back-porch lines in lines timescale in us Horizontal blanking interval (HBI) - front porch interval + hsync pulse length + back porch interval in pixels timescale in ns Total lines - Vtotal - visible lines + vertical blanking interval Total pixels - Htotal - visible part of the line + horizontal blanking interval
#Oxenfree game frequency 60.8 plus#
Total area - the active area plus invisible components in the blanking intervals duration of an interval equals number of pixels divided by frequencyĪctive area - commonly understood as the resolution the rectangular set of pixels that are visibleĪctive pixels - the visible part of the lineĪctive lines - the lines of the visible image Pixel clock - the heart of display timing, elementary timing unit everything else counts in the pixel clock ticks Vertical lines for aspect ratio signaling (VESA/CVT)ĭescription of the signals to be done later.