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software:feature:video [2020/08/07 07:22] – henriksoftware:feature:video [2022/03/28 07:54] (current) – torben
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-====== Video ======+====== Video/camera ======
  
 BBT has built-in support for video recording of important locations, such as the finish line. It is a very effective tool for verifying results and serves as a visual backup in situations like when a participant is racing without his tag or transponder. Video is a valuable tool to resolve many unforeseen circumstances. BBT has built-in support for video recording of important locations, such as the finish line. It is a very effective tool for verifying results and serves as a visual backup in situations like when a participant is racing without his tag or transponder. Video is a valuable tool to resolve many unforeseen circumstances.
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 ===== Supported cameras ===== ===== Supported cameras =====
-Short answer: Any IP Camera that is able to deliver a MJPEG stream via HTTP or RTSP.+Short answer: Any IP Camera that is able to deliver a H.264 or MJPEG stream via RTSP or a MJPEG stream via HTTP.
  
 Two modes of transportation is supported: RTSP and HTTP (multipart/x-mixed-replace). This can be thought of as the way the images are delivered from the camera and into BBT. Almost every consumer IP camera supports at least one of these. Two modes of transportation is supported: RTSP and HTTP (multipart/x-mixed-replace). This can be thought of as the way the images are delivered from the camera and into BBT. Almost every consumer IP camera supports at least one of these.
- 
-As image codec (the way images are turned into data to be sent on the network), we currently **only support MJPEG** (Motion JPEG). This is an older more simpler protocol than the standard used by most cameras today. We currently **do not support H.264**, although we would like to add this in the future. 
- 
-If your camera does not support MJPEG, see below for a workaround. 
  
 ===== Adding a camera ===== ===== Adding a camera =====
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   - Add the camera   - Add the camera
  
-Finding the correct URL can be very tricky, since many cameras have very poor documentation, and most are not the same. Often the camera supports multiple streams of different types (on different URLs), so you must select one that outputs a MJPEG stream. Consult your camera provider (or Google) to find out what the URL for your specific camera looks like. +Finding the correct URL can be very tricky, since many cameras have very poor documentation, and most are not the same. Often the camera supports multiple streams of different types (on different URLs), so you must select one that is compatible. Consult your camera provider (or Google) to find out what the URL for your specific camera looks like. In most cases, a default stream of H.264 via RTSP is available, and can be used.
  
 iSpy has an online camera database that you might use to find the correct URL for your camera: https://www.ispyconnect.com/sources.aspx iSpy has an online camera database that you might use to find the correct URL for your camera: https://www.ispyconnect.com/sources.aspx
  
 Example URLs can look like this (replace IP and username/password to match your camera): Example URLs can look like this (replace IP and username/password to match your camera):
- 
- 
  
 <nowiki> <nowiki>
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 //Note: BBT is optimized for flexibility and easy-of-use, not space. So be sure to have plently of free disk space when recording for long periods. // //Note: BBT is optimized for flexibility and easy-of-use, not space. So be sure to have plently of free disk space when recording for long periods. //
 +
 ===== Viewing video ===== ===== Viewing video =====
 All video recording (and the live buffer) is kept on the Timing Master. While wathcing/recording, any of the clients connected to the master will be able to freely jump back and forth in all the recorded video, independently of eachother, going forwards, backwards, freezing the frame etc.  All video recording (and the live buffer) is kept on the Timing Master. While wathcing/recording, any of the clients connected to the master will be able to freely jump back and forth in all the recorded video, independently of eachother, going forwards, backwards, freezing the frame etc. 
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-===== Workaround for non-MJPEG cameras using VLC ===== +===== Performance ===== 
-If your camera does not support MJPEG, or you cannot get it to work properly, you can use the free softwave VLC (https://www.videolan.org) to connect directly to the camera, and send out a video stream: +Many video cameras provide high frame rates and a large image resloution.
- +
-So instead of a direct connection (Camera --> BBT) you can use VLC to convert the video for you (Camera --> VLC --> BBT) +
- +
-**Example** +
- +
-Your camera stream (for example H.264) might be called  +
- http://username:password@192.168.1.227/videostream.cgi +
- +
-Using this command you can tell VLC to connect to that camera, and output an MJPEG stream on URL http://localhost:8080 +
- +
-<nowiki> +
-vlc.exe -vvv -Idummy  http://username:password@192.168.1.227/videostream.cgi --sout #transcode{vcodec=MJPG,venc=ffmpeg{strict=1}}:standard{access=http{mime=multipart/x-mixed-replace;boundary=--7b3cc56e5f51db803f790dad720ed50a},mux=mpjpeg,dst=:8080/} --run-time= 10 vlc://quit; +
-</nowiki>+
  
-In BBT you can then simply add http://localhost:8080 as the video source.+The BBT video feature is not meant for recording nice smooth videos, but rather as a means of having flexible integrated visual verification. Therefore BBT will save resources and disk space by only saving a few frames per second and reducing the image size.
software/feature/video.1596784971.txt.gz · Last modified: 2020/08/07 07:22 by henrik


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