1 00:00:00,450 --> 00:00:04,140 So now let's take a look at capturing video using screenshots. 2 00:00:04,620 --> 00:00:05,910 So what does that mean? 3 00:00:06,120 --> 00:00:15,030 So sometimes if it's zoom in a bit, so sometimes if you have issues with accessing a video stream, 4 00:00:16,530 --> 00:00:22,350 let's assume it's a YouTube or live Facebook video stream that you want to process for some reason or 5 00:00:22,350 --> 00:00:23,190 Twitch stream. 6 00:00:23,670 --> 00:00:29,910 Now there all functions like remote and a couple others that allow you to plug in the URL or code for 7 00:00:29,940 --> 00:00:32,820 YouTube video and stream it using Python. 8 00:00:33,270 --> 00:00:40,740 However, a lot of the video companies like YouTube and Twitch, they don't like libraries can do that, 9 00:00:40,740 --> 00:00:46,260 so they occasionally try to block those things by putting up, making making slight changes in the algorithm 10 00:00:46,470 --> 00:00:47,460 that breaks those code. 11 00:00:48,090 --> 00:00:56,160 So one way to do it is you just bring up the stream on your video player, a web browser, and you use 12 00:00:56,160 --> 00:01:01,530 something a method called capturing screenshots as capturing screenshots of your desktop and turning 13 00:01:01,800 --> 00:01:02,640 it into a video. 14 00:01:03,060 --> 00:01:08,430 So the previous company I was at, we actually used that to process Twitch streams. 15 00:01:09,390 --> 00:01:11,820 It was quite an efficient way to do it. 16 00:01:11,910 --> 00:01:16,980 However, we wouldn't be doing what into two or three different Twitch streams at one time. 17 00:01:17,580 --> 00:01:23,940 This was a gambling EA Games gambling company, bingo that I was at, and we used the screenshot grabber. 18 00:01:24,450 --> 00:01:25,650 We didn't use image grab. 19 00:01:25,710 --> 00:01:26,550 We use another one. 20 00:01:26,970 --> 00:01:29,100 But it was good because it was quite fast. 21 00:01:29,550 --> 00:01:34,800 I actually experimented with many of them, so we actually have to install this here. 22 00:01:35,070 --> 00:01:37,180 So I'm going to install that right now. 23 00:01:37,180 --> 00:01:41,190 We don't have it in this environment that I'm using. 24 00:01:41,670 --> 00:01:44,220 So I'm just going to pause the video and store these things here. 25 00:01:44,490 --> 00:01:47,940 Now these are the install instructions for Mac and Linux. 26 00:01:48,450 --> 00:01:48,810 You can. 27 00:01:49,170 --> 00:01:50,490 This has to be done in terminal. 28 00:01:50,520 --> 00:01:56,130 If you're using a Mac or Linux Windows, you can run the pipe command service, but exclamation pip, 29 00:01:56,130 --> 00:01:58,500 install Polu and PIP installed by screenshot. 30 00:02:00,630 --> 00:02:02,810 So I've installed these these function. 31 00:02:02,820 --> 00:02:06,870 These are libraries here, and let's grab a screenshot. 32 00:02:06,870 --> 00:02:10,110 So let's run this function here and it's what it does. 33 00:02:10,110 --> 00:02:13,860 It grabs a screenshot of our current screen using image stock grab here. 34 00:02:13,980 --> 00:02:18,180 Image grab function is loaded here, and it saves it as fullscreen or PNG. 35 00:02:18,420 --> 00:02:22,700 So let's take a look and see if this works and you can see what. 36 00:02:22,710 --> 00:02:26,070 Specifically, it grabs a screenshot of the screen you on just now. 37 00:02:26,730 --> 00:02:27,840 So that's pretty cool. 38 00:02:29,070 --> 00:02:34,680 So what about if you wanted to do it like in the video stream so we can do it this way? 39 00:02:34,980 --> 00:02:39,630 What this does, it allows us to grab a specific region of the screen we're looking for. 40 00:02:39,660 --> 00:02:40,950 So we draw a bounding box. 41 00:02:40,950 --> 00:02:46,590 We're looking at a top left corner of the screen and we're going to displayed it as a video displaying 42 00:02:46,590 --> 00:02:51,420 the FBS of that here, which is a useful tool to get to see the performance of it. 43 00:02:51,930 --> 00:02:53,970 And you can see it's printing graphics here. 44 00:02:54,000 --> 00:03:01,170 You can actually use the TV to DOT protects the displays as well, and you can see this is our window 45 00:03:01,170 --> 00:03:03,720 here in top left window that we're looking at. 46 00:03:04,140 --> 00:03:11,880 When I move my most of it, it should probably the most of the mouse doesn't is invisible, but let's 47 00:03:11,880 --> 00:03:12,660 see this. 48 00:03:12,810 --> 00:03:17,660 It should know it has a bit of a lag, so you can see that it works pretty cool. 49 00:03:17,670 --> 00:03:21,260 And we do have the Bugs Bunny still playing in the back for the previous stream. 50 00:03:21,270 --> 00:03:23,160 So just ignore that can be distracting. 51 00:03:24,000 --> 00:03:25,080 Let's go back to this. 52 00:03:26,070 --> 00:03:31,200 So yeah, you can see it has a couple of seconds too late, but that's OK. 53 00:03:31,830 --> 00:03:33,540 So let's stop this now. 54 00:03:33,810 --> 00:03:36,710 Let's zoom out and stop that code. 55 00:03:37,320 --> 00:03:42,640 And what if you needed a fast frame rate grabber use and this? 56 00:03:42,690 --> 00:03:44,500 This is not a library that's loaded here. 57 00:03:44,520 --> 00:03:46,530 I'm not sure if I install this before this find. 58 00:03:47,520 --> 00:03:48,170 Yep, I did. 59 00:03:48,210 --> 00:03:51,240 And you can see immediately the frame rate is much, much faster. 60 00:03:52,170 --> 00:03:54,330 You can see that it has no, almost no lag. 61 00:03:54,930 --> 00:03:56,370 You can see where it was over it here. 62 00:03:56,460 --> 00:04:02,550 It was creating multiple layers of it because it's capturing it for each other point. 63 00:04:02,560 --> 00:04:05,400 So let's just move this box away. 64 00:04:06,010 --> 00:04:08,190 And this one doesn't grab a mouse as well. 65 00:04:09,340 --> 00:04:10,350 Doesn't grab this things. 66 00:04:10,350 --> 00:04:15,540 Maybe it's not in the region, actually, it's looking at, Oh yeah, it's in this region here. 67 00:04:15,540 --> 00:04:22,170 It's looking at so we can move this window over it and you can see there's minimal lag here. 68 00:04:22,230 --> 00:04:28,560 So if you needed to get a live video stream in here, this is one way to do it. 69 00:04:28,690 --> 00:04:34,350 This is one where you can put a video player right here and load the video here and process it using 70 00:04:34,350 --> 00:04:36,930 any open carry function that you want to do. 71 00:04:37,650 --> 00:04:40,050 So that's it for this lesson. 72 00:04:40,290 --> 00:04:43,850 Hope you enjoyed it, and I'll see you in the six. 73 00:04:43,860 --> 00:04:49,920 I started the seventh lesson here, which is importing YouTube videos into open TV, which is another 74 00:04:49,920 --> 00:04:52,020 cool way we can process video streams. 75 00:04:52,500 --> 00:04:54,510 So stay tuned for that lesson. 76 00:04:54,720 --> 00:04:55,230 Thank you.