Difference between revisions of "Portsdown Video Sources"
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This version of the C920 includes a very capable hardware H264 encoder, which is not included in the newer version. This camera is supported by both the Portsdown 2020 and the Portsdown 4. The responses to the commands above are listed here: [[:Media:C920_Old.pdf]] | This version of the C920 includes a very capable hardware H264 encoder, which is not included in the newer version. This camera is supported by both the Portsdown 2020 and the Portsdown 4. The responses to the commands above are listed here: [[:Media:C920_Old.pdf]] | ||
| + | ====Logitech C920 - New Version==== | ||
| + | Response to lsusb: | ||
| + | ID 046d:0892 Logitech, Inc. OrbiCam | ||
| + | This newer version of the C920 has different electronics without the H264 hardware encoder included. The reponses to the commands above are listed here: [[:File:C920_New.pdf]] | ||
| − | ====Logitech | + | ====Logitech C910==== |
| + | Response to lsusb: | ||
| − | + | ID 046d:0821 | |
====Logitech B910==== | ====Logitech B910==== | ||
| + | |||
| + | Response to lsusb: | ||
| + | ID 046d:0823 | ||
| + | |||
| + | ====Logitech C170==== | ||
| + | |||
| + | Response to lsusb: | ||
| + | ID 046d:082b Logitech, Inc. Webcam C170 | ||
| + | The Logitech C170 is a basic 640x480 webcam with single channel (48k) audio. The parameters are here: [[:File:C170.pdf]] | ||
| + | |||
| + | ===Format Selection in ffmpeg=== | ||
| + | |||
| + | To select the camera output format to be used as an input by ffmpeg, one of the 3 following parameter values can be used: | ||
| + | |||
| + | -f v4l2 -input_format h264 | ||
| + | -f v4l2 -input_format yuyv422 | ||
| + | -f v4l2 -input_format mjpeg | ||
Latest revision as of 20:31, 23 August 2020
The video encoders on the Portsdown transmitter need specific configuiration for each video device. Information about some of these devices has been collated on this page. The exact model of device can be found by using the Linux command lsusb and checking the manufacturer and device IDs - each are 4-digit hex numbers.
The information needed to configure the cameras for the Portsdown can be gleaned from the following commands:
v4l2-ctl --list-devices v4l2-ctl -d /dev/video1 --list-formats-ext arecord -l arecord -f S16_LE -c 2 -r 60000 -D hw:1,0 -d 5 testS16_LE.wav
Then trial and error is required to fine-tune the response.
WebCams
Logitech C920 - Old Version
Response to lsusb:
ID 046d:082d Logitech, Inc. HD Pro Webcam C920
This version of the C920 includes a very capable hardware H264 encoder, which is not included in the newer version. This camera is supported by both the Portsdown 2020 and the Portsdown 4. The responses to the commands above are listed here: Media:C920_Old.pdf
Logitech C920 - New Version
Response to lsusb:
ID 046d:0892 Logitech, Inc. OrbiCam
This newer version of the C920 has different electronics without the H264 hardware encoder included. The reponses to the commands above are listed here: File:C920_New.pdf
Logitech C910
Response to lsusb:
ID 046d:0821
Logitech B910
Response to lsusb:
ID 046d:0823
Logitech C170
Response to lsusb:
ID 046d:082b Logitech, Inc. Webcam C170
The Logitech C170 is a basic 640x480 webcam with single channel (48k) audio. The parameters are here: File:C170.pdf
Format Selection in ffmpeg
To select the camera output format to be used as an input by ffmpeg, one of the 3 following parameter values can be used:
-f v4l2 -input_format h264 -f v4l2 -input_format yuyv422 -f v4l2 -input_format mjpeg