Streaming Display - Revision history

G8PEF: /* Displaying BATC Streams on Your Portsdown */

2019-10-18T10:55:32Z

Displaying BATC Streams on Your Portsdown

G8GKQ: /* Displaying BATC Streams on Your Portsdown */

2018-07-31T13:58:11Z

Displaying BATC Streams on Your Portsdown

G8GKQ at 21:20, 15 July 2018

2018-07-15T21:20:09Z

G8GKQ: /* Displaying BATC Streams on Your Portsdown */

2018-07-14T21:55:08Z

Displaying BATC Streams on Your Portsdown

G8GKQ: /* Displaying BATC Streams on Your Portsdown */

2018-07-14T21:54:55Z

Displaying BATC Streams on Your Portsdown

G8GKQ: /* Transmitting after Viewing a Stream */

2018-07-14T21:52:40Z

Transmitting after Viewing a Stream

G8GKQ: /* Transmitting after Viewing a Stream */

2018-07-14T21:51:19Z

Transmitting after Viewing a Stream

G8GKQ: /* Displaying BATC Streams on Your Portsdown */

2018-07-14T21:42:18Z

Displaying BATC Streams on Your Portsdown

G8GKQ at 21:41, 14 July 2018

2018-07-14T21:41:03Z

G8GKQ: Created page with "===Displaying BATC Streams on Your Portsdown=== From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been a..."

2018-07-14T21:35:44Z

Created page with "===Displaying BATC Streams on Your Portsdown=== From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been a..."

New page

===Displaying BATC Streams on Your Portsdown===

From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown. This can be selected from Menu 2 using the "Stream Viewer" button.

[[File:GB3HV.jpg|240px]]

Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and if you are using the WWaveshare screen, the stream image is output on the RPi's composite video output. The stream audio is output on the audio terminals on the 3.5mm jack.

Note that the stream appears jerky on the Waveshare screen due to the low update rate (3 Hz?), but is smooth on the video output or on the Elelement 14 screen.

===Selecting the Stream===

[[File:menu20.jpg|480px]]

The stream menu is pre-programmed with 8 well-used BATC streams, however these can be changed by the user from the touchscreen. Simply press the "Amend Preset" button, and it will turn red, signifying that you should select the Preset button that you want to reprogram. After touching the chosen preset, you will be asked to enter the new streamname. BATC streamnames are generally the relevant callsign in lower case, for example "gb3hv". After pressing enter, you will be asked for the label that you want to appear on the preset button; this should not be more than 8 characters long otherwise it will not fit. After pressing enter, the Stream Selection Menu will reappear with your new stream.

When you selct a stream, there is a delay of about 5 seconds while the software (omxplayer) is loaded. If present, the stream will start to run with a

@@ Line 5: / Line 5: @@
 [[File:GB3HV.jpg|240px]] [[File:GB3VL.jpg|240px]]
-Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and, if you are using the Waveshare screen, the stream image is also output on the RPi's composite video output.  The stream audio is output on the audio terminals on the same 3.5mm jack.
+Once selected, the stream is displayed on the touchscreen (Waveshare or Official Raspberry Pi 7") and, if you are using the Waveshare screen, the stream image is also output on the RPi's composite video output.  The stream audio is output on the audio terminals on the same 3.5mm jack.
-Note that the stream appears jerky on the Waveshare screen due to the low update rate (3 Hz?), but is smooth on the video output or on the Element 14 screen.
+Note that the stream appears jerky on the Waveshare screen due to the low update rate (3 Hz?), but is smooth on the video output or on the Official Raspberry Pi 7" screen.
 ===Selecting the Stream===

@@ Line 1: / Line 1: @@
 ===Displaying BATC Streams on Your Portsdown===
-From software version 20180715, the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.
+From software version 20180715, the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.  Software Version 201807290 added the ability to monitor a stream and have the video and audio start when the stream becomes active.
 [[File:GB3HV.jpg|240px]] [[File:GB3VL.jpg|240px]]

@@ Line 1: / Line 1: @@
 ===Displaying BATC Streams on Your Portsdown===
-From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.
+From software version 20180715, the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.
 [[File:GB3HV.jpg|240px]] [[File:GB3VL.jpg|240px]]

@@ Line 3: / Line 3: @@
 From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.
-[[File:GB3HV.jpg|240px]][[File:GB3VL.jpg|240px]]
+[[File:GB3HV.jpg|240px]] [[File:GB3VL.jpg|240px]]
 Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and, if you are using the Waveshare screen, the stream image is also output on the RPi's composite video output.  The stream audio is output on the audio terminals on the same 3.5mm jack.

@@ Line 3: / Line 3: @@
 From software version 20180715 (Stretch), the capability to display selected streams from the BATC Streaming Server has been added to the Portsdown.  This can be selected from Menu 2 using the "Stream Viewer" button.
-[[File:GB3HV.jpg|240px]]
+[[File:GB3HV.jpg|240px]][[File:GB3VL.jpg|240px]]
 Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and, if you are using the Waveshare screen, the stream image is also output on the RPi's composite video output.  The stream audio is output on the audio terminals on the same 3.5mm jack.

@@ Line 19: / Line 19: @@
 ===Transmitting after Viewing a Stream===
-The stream viewer outputs the stream audio using the RPi's PWM-based audio output.  Unfortunately, this output is then not available for Portsdown filter-modulator ior Ugnly Mode transmissions until after a reboot.  A warning message has been added to remind users of this.
+The stream viewer outputs the stream audio using the RPi's PWM-based audio output.  Unfortunately, this output is then not available for Portsdown filter-modulator or Ugly Mode transmissions until after a reboot.  A warning message has been added to remind users of this.
 ===Viewing non-BATC Streams===

← Older revision		Revision as of 21:51, 14 July 2018
Line 20:		Line 20:

	The stream viewer outputs the stream audio using the RPi's PWM-based audio output. Unfortunately, this output is then not available for Portsdown filter-modulator ior Ugnly Mode transmissions until after a reboot. A warning message has been added to remind users of this.		The stream viewer outputs the stream audio using the RPi's PWM-based audio output. Unfortunately, this output is then not available for Portsdown filter-modulator ior Ugnly Mode transmissions until after a reboot. A warning message has been added to remind users of this.
		+
		+	===Viewing non-BATC Streams===
		+
		+	This capability can be used to view streams other than those from the BATC Server. However, to set this up, the stream presets file needs to be edited with a text editor - it is not possible to set-up non-BATC stream viewing from the touchscreen. To set up a non-standard stream, simply edit the file home/pi/rpidatv/scripts/stream_presets.txt with a text editor and reboot. Once the new stream is entered in the file, it can be selected from the touchscreen, but cannot be amended.
		+
		+	Thanks to Heather M0HMO for doing the initial research to enable this capability.

@@ Line 5: / Line 5: @@
 [[File:GB3HV.jpg|240px]]
-Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and if you are using the WWaveshare screen, the stream image is output on the RPi's composite video output.  The stream audio is output on the audio terminals on the 3.5mm jack.
+Once selected, the stream is displayed on the touchscreen (Waveshare or Element 14 7 inch) and if you are using the Waveshare screen, the stream image is output on the RPi's composite video output.  The stream audio is output on the audio terminals on the 3.5mm jack.
 Note that the stream appears jerky on the Waveshare screen due to the low update rate (3 Hz?), but is smooth on the video output or on the Elelement 14 screen.
@@ Line 15: / Line 15: @@
 The stream menu is pre-programmed with 8 well-used BATC streams, however these can be changed by the user from the touchscreen.  Simply press the "Amend Preset" button, and it will turn red, signifying that you should select the Preset button that you want to reprogram.  After touching the chosen preset, you will be asked to enter the new streamname.  BATC streamnames are generally the relevant callsign in lower case, for example "gb3hv".  After pressing enter, you will be asked for the label that you want to appear on the preset button; this should not be more than 8 characters long otherwise it will not fit.  After pressing enter, the Stream Selection Menu will reappear with your new stream.
-When you selct a stream, there is a delay of about 5 seconds while the software (omxplayer) is loaded.  If present, the stream will start to run with a
+When you select a stream, there is a delay of about 5 seconds while the software (omxplayer) is loaded.  If present, the stream will start to run with a delay of about 4 seconds more than the flash stream viewed on a PC.  The stream is displayed until you touch the screen again.  If the selected stream is not active, the stream simply does not start.  Occasionally, an active stream refuses to start; this is a bug and the stream will generally start if you cancel (by touching the screen) and re-select it.