OBS - Open Broadcast Studio - Revision history

G3gja at 14:13, 7 October 2023

2023-10-07T14:13:54Z

G3gja: /* Hardware */

2023-10-07T09:21:16Z

Hardware

G3gja: /* Using the system */

2023-10-07T09:18:37Z

Using the system

G3gja: /* Conclusion */

2023-10-07T09:17:17Z

Conclusion

G3gja: /* Using the system */

2023-10-07T09:14:32Z

Using the system

G3gja: /* FreeStreamCoder configuration */

2023-10-07T09:12:54Z

FreeStreamCoder configuration

G3gja: /* Conclusion */

2023-10-07T09:05:29Z

Conclusion

G3gja: /* Using the system */

2023-10-07T09:03:36Z

Using the system

G3gja: /* Hardware */

2023-10-07T09:01:54Z

Hardware

G3gja at 08:44, 7 October 2023

2023-10-07T08:44:31Z

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 The test card image will appear in the preview screen. If it does not fill the screen, right mouse click the image and then select Transform from the pop-up menu and then from the next pop-up menu choose Fit to screen. The image will then fill the preview screen. To keep these settings, click on the lock symbol at the right-hand end of the highlighted source button in the sources section. Now click the Transition button between the two screens and the image will transfer to the Program screen.
 ====Using the system====
 Set the Portsdown to 333kS/s symbol rate, FEC 3/4, DVB-S2 modulation and the Encoder to IPTS in. Set the Output to to suit your SDR. Set the output frequency.
 Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the RF output after a few seconds. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.

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 =====Hardware=====
-You will need a capable PC. It should have an Intel i5-10500 processor or better, 16GB RAM, an SSD and ideally an nVidia graphics card that supports NVENC video encoding. GTX1070, GTX1660, RTX A2000 or better are suitable models. It's also possible to use the QuickSync video encoder built into the Intel processor mentioned above or later versions with acceptable results.
+You will need a capable PC. It should have an Intel i5-10500 processor or better, 16GB RAM, an SSD and ideally an nVidia graphics card that supports NVENC video encoding. GTX1050, GTX1070, GTX1660, RTX A2000, RTX3050 etc. or better are suitable models. It's also possible to use the QuickSync video encoder built into the Intel processor mentioned above or later versions with acceptable results.
 Your Portsdown and PC must be connected to the same Ethernet network. Usually, you would add a cable from your Portsdown to a spare LAN port on the Internet router. Alternatively, use a small ethernet switch in the shack with a feed back to the router. Don't be tempted to use WiFi for either the Portsdown or the PC; the results will be disapointing.

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 Set the Portsdown to 333kS/s symbol rate, FEC 3/4, DVB-S2 modulation and the Encoder to IPTS in. Set the Output to to suit your SDR. Set the output frequency.
-Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the RF output. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.
+Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the RF output after a few seconds. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.
 A final reminder that the Pluto cannot handle H265 in this configuration. Don't try it as it confuses the Pluto, but the Lime Mini and the BATC Filter/Modulator board can take both H265 and H264.

← Older revision		Revision as of 09:17, 7 October 2023
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	====Conclusion====		====Conclusion====
−	This is a reasonably stable configuration for standard HD in a 333kS/s transmission for most uses that amateurs need such as talking heads and videos without lots of fine moving detail. It has been run for over an hour without skipping frames on a Core i5-10500 PC with an nVidia RTX A2000 6GB graphics card. Your mileage may vary depending on your hardware specs. It should be used as a starting point for your own experiments with OBS and FreeSteamCoder.	+	This is a reasonably stable configuration for standard HD in a 333kS/s transmission for most uses that amateurs need such as talking heads and videos without lots of fine moving detail. There's an acceptable delay of between 5 and 7 seconds between input and RF output. It has been run for over an hour without skipping frames on a Core i5-10500 PC with an nVidia RTX A2000 6GB graphics card. Your mileage may vary depending on your hardware specs. It should be used as a starting point for your own experiments with OBS and FreeSteamCoder.

@@ Line 50: / Line 50: @@
 Set the Portsdown to 333kS/s symbol rate, FEC 3/4, DVB-S2 modulation and the Encoder to IPTS in. Set the Output to to suit your SDR. Set the output frequency.
-Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the output of the SDR. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.
+Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the RF output. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.
 A final reminder that the Pluto cannot handle H265 in this configuration. Don't try it as it confuses the Pluto, but the Lime Mini and the BATC Filter/Modulator board can take both H265 and H264.

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 Now select the DVB Tables tab. Enter your callsign and optionally the location in the top boxes. The rest can be left as default.
-Select the MPEG Transport Stream tab.  Set DVB to DVB-S2, Symbol Rate 333, FEC to 3/4, FEC frame to 64800, Codec to H264, Image size 1280 x 720, FPS to 25, Audio codec to AAC and Audi AAC kb/s to 64. That completes the set up of FreeStreamCoder.
+Select the MPEG Transport Stream tab.  Set DVB to DVB-S2, Symbol Rate 333, FEC to 3/4, FEC frame to 64800, Codec to H264, Image size 1280 x 720, FPS to 25, Audio codec to AAC and Audi AAC kb/s to 64. Take note if you are using a BATC Filter/Modulator board, the DVB setting must be DVB-S. DVB-S2 is not supported. That completes the set up of FreeStreamCoder.
 ====OBS configuration====

← Older revision		Revision as of 09:05, 7 October 2023
Line 55:		Line 55:

	====Conclusion====		====Conclusion====
−	This is a reasonably stable configuration for standard HD in a 333kS/s transmission for most uses that amateurs need such as talking heads and videos without lots of fine moving detail. It has been run for over an hour without skipping frames on a Core i5-10500 PC with an nVidia ~~RTX2000A~~ graphics card. Your mileage may vary depending on your hardware specs. It should be used as a starting point for your own experiments with OBS and FreeSteamCoder.	+	This is a reasonably stable configuration for standard HD in a 333kS/s transmission for most uses that amateurs need such as talking heads and videos without lots of fine moving detail. It has been run for over an hour without skipping frames on a Core i5-10500 PC with an nVidia RTX A2000 6GB graphics card. Your mileage may vary depending on your hardware specs. It should be used as a starting point for your own experiments with OBS and FreeSteamCoder.

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 Now click the Start button on the FreeStreamCoder and then the Tx button on the Portsdown. If all is well, the virtual LED on the FreeStreamCoder will change from Red to Green and a DATV output will appear at the output of the SDR. When the transmission is stopped on the Portsdown, it's best to stop the FreeStreamCoder too.
-A final reminder that the Pluto cannot handle H265 in this configuration. Don't try it as it confuses the Pluto, but the Lime Mini can take both H265 and H264.
+A final reminder that the Pluto cannot handle H265 in this configuration. Don't try it as it confuses the Pluto, but the Lime Mini and the BATC Filter/Modulator board can take both H265 and H264.
 ====Conclusion====
 This is a reasonably stable configuration for standard HD in a 333kS/s transmission for most uses that amateurs need such as talking heads and videos without lots of fine moving detail. It has been run for over an hour without skipping frames on a Core i5-10500 PC with an nVidia RTX2000A graphics card. Your mileage may vary depending on your hardware specs. It should be used as a starting point for your own experiments with OBS and FreeSteamCoder.

@@ Line 6: / Line 6: @@
 You will need a capable PC. It should have an Intel i5-10500 processor or better, 16GB RAM, an SSD and ideally an nVidia graphics card that supports NVENC video encoding. GTX1070, GTX1660, RTX A2000 or better are suitable models. It's also possible to use the QuickSync video encoder built into the Intel processor mentioned above or later versions with acceptable results.
 Your Portsdown and PC must be connected to the same Ethernet network. Usually, you would add a cable from your Portsdown to a spare LAN port on the Internet router. Alternatively, use a small ethernet switch in the shack with a feed back to the router. Don't be tempted to use WiFi for either the Portsdown or the PC; the results will be disapointing.
-−
 =====Software=====
 Your PC should be running Microsoft Windows 10 or 11 and be updated to the 22H2 release. If using an nVidia graphics card it is essential to use the latest drivers. See the nVidia website.

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 In the Controls menu select Settings and then Video on the left-hand side of the pop-up window. Set the top two resolution options to 1280 x 720. Lanczos gives the best Downscale filter results but you can play with this setting if the CPU loading is too high.
-Now select the Audio settings menu. Change the default Global Audio Devices Mic/Auxilliary to a valid hardware device. This might be the integrated microphone of a C920 camera, if plugged, in for example. Sample Rate should be set to 48kHz and Channels to Stereo.
+Now select the Audio settings menu. Change the default Global Audio Devices Mic/Auxilliary to a valid hardware device. This might be the integrated microphone of a C920 camera, if plugged in, for example. Sample Rate should be set to 48kHz and Channels to Stereo.
 Next select the Tools menu from above the Preview screen. Click the VirtualCam button and then click the Start button in the window that appears. Also select the AutoStart check box and leave everything else as default. Close the window.