Display Resolutions - Revision history

G8PEF: /* Element 14 7 inch screen */

2019-10-18T10:46:22Z

Element 14 7 inch screen

2019-10-18T10:45:27Z

Element 14 7 inch screen

2019-10-16T18:48:54Z

Element 14 7 inch screen

2019-01-29T10:42:41Z

Element 14 7 inch screen

2018-01-05T21:13:45Z

Transmitted Resolution

2017-12-22T16:18:38Z

Transmitted Resolution

2017-12-22T16:08:02Z

Element 14 7 inch screen

2017-12-22T16:04:59Z

Video from EasyCap

2017-11-07T17:07:15Z

2017-10-10T08:34:38Z

Element 14 7 inch screen

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 The Waveshare 4 inch screen is 480x320.  The screen image is inverted compared to the Waveshare 3.5 inch screen, so there is a menu selection in the console to specifically select this screen.
-===Element 14 7 inch screen===
+===Official Raspberry Pi 7 inch screen===
 The Official Raspberry Pi 7" touchscreen display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  From software version 201910103, it is possible to enable a simulatanious composite video ooutput..  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.

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 ===Element 14 7 inch screen===
-The Element 14 7 inch display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  From software version 201910103, it is possible to enable a simulatanious composite video ooutput..  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.
+The Official Raspberry Pi 7" touchscreen display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  From software version 201910103, it is possible to enable a simulatanious composite video ooutput..  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.
 ===Transmitted Resolution===

@@ Line 27: / Line 27: @@
 ===Element 14 7 inch screen===
-The Element 14 7 inch display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  Note that fitting this display disables the "Composite Video Output" and VideoView modes.  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.  Additionally, the VideoView mode is tailored to the GPIO-connected touchscreens, and only writes to them.
+The Element 14 7 inch display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  From software version 201910103, it is possible to enable a simulatanious composite video ooutput..  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.
 ===Transmitted Resolution===

@@ Line 27: / Line 27: @@
 ===Element 14 7 inch screen===
-The Element 14 7 inch display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if "TonTec35" is selected as the display type in the Portsdown Console Menu.  Note that fitting this display disables the "Composite Video Output" and VideoView modes.  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.  Additionally, the VideoView mode is tailored to the GPIO-connected touchscreens, and only writes to them.
+The Element 14 7 inch display is 800x480 pixels.  This display currently works in the transmitting modes of the Portsdown if selected as the display type in the Portsdown Console Menu.  Note that fitting this display disables the "Composite Video Output" and VideoView modes.  This is because it creates a new framebuffer and directs all imagery towards itself and not to the composite video output.  Additionally, the VideoView mode is tailored to the GPIO-connected touchscreens, and only writes to them.
 ===Transmitted Resolution===

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 The default CAMH264, ANALOGCAM, PATTERN and CONTEST resolution is 704x576@25p.  If the calculated video bitrate (from SR and FEC) is below 300K, this is reduced to 352x288@15p. and for video bitrates of less than 150K it is further reduced to 160x140@15p.
-The default CAMMPEG-2 and ANALOGMPEG-2 resolution is 720x576@25p.   If the calculated video bitrate (from SR and FEC) is below 300K, this is reduced to 352x288@15p.   The CARDMPEG-2 resolution is 720x576.
+The default CAMMPEG-2 and ANALOGMPEG-2 resolution is 720x576@25p.   If the calculated video bitrate (from SR and FEC) is below 300K, this is reduced to 352x288@15p.   The CARDMPEG-2 resolution is 720x576@5p.
 ===Receiver Compatibility===
 There is no concept of a "PAL" or an "NTSC" DVB-S or DVB-S2 receiver.  When PAL or NTSC is used in the receiver description it may refer to an analog video output from the receiver.  What has been noticed is that some DVB-S receivers designed for use in North America do not decode 720x576 resolution and were manufactured on the basis that they would only ever receive 720x480 signals; as such they are not fully DVB-S compliant.  Note that there is a flag in the datastream to indicate if a digital signal was originally coded from a PAL or NTSC signal.  This flag is not used in decoding, but may be used in be professional receivers to assist in the reconstruction of an analog signal.

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 ===Video from EasyCap===
-The Fusicai EasyCap (as sold by the BATC Shop) outputs 720x576 in PAL mode, and 720x480 in NTSC mode.  This mode can be switched by making selections on the Portsdown Console Menu or the Touchscreen menu.  The PAL/NTSC selection on these menus ONLY adjusts this input mode; no other settings are changed.
+The Fushicai EasyCap (as sold by the BATC Shop) outputs 720x576 in PAL mode, and 720x480 in NTSC mode.  This mode can be switched by making selections on the Portsdown Console Menu or the Touchscreen menu.  The PAL/NTSC selection on these menus ONLY adjusts this input mode; no other settings are changed.
 ===Raspberry Pi Framebuffer===

← Older revision		Revision as of 17:07, 7 November 2017
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	The Waveshare 3.5 inch screen is 480x320. Note that this is a 3x2 aspect ratio, not 4x3, so some vertical compression (flattening and widening) of the transmitted image occurs.		The Waveshare 3.5 inch screen is 480x320. Note that this is a 3x2 aspect ratio, not 4x3, so some vertical compression (flattening and widening) of the transmitted image occurs.
		+
		+	===Waveshare 4 inch Screen===
		+
		+	The Waveshare 4 inch screen is 480x320. The screen image is inverted compared to the Waveshare 3.5 inch screen, so there is a menu selection in the console to specifically select this screen.

	===Element 14 7 inch screen===		===Element 14 7 inch screen===