0 -sameq /tmp/screencast. Today, we. FFmpeg¶ FFmpeg ist ein Kommandozeilenprogramm zur Erstellung und Umwandlung von Videos. Example using 2, 4, and. org Video Disk Recorder. There is a nice help page by the ffmpeg developers recommending to do encoding after recording, but this does not seem to make a lot of difference in my. mkv -vcodec mpeg2video -sameq -acodec copy -f vob -copyts -y video. Guida per installazione ed uso di fedora. Screencast example For example if your video is a low motion 5fps screen cast in a 1280 x 720 frame size you would have a formula like this: 1280 x 720 = 921,600 pixel count. The Leading Enterprise Video Platform VidGrid specializes in recording, hosting, in-video questions, interactive captions, integrations, and custom video API. Record any Arbitrary Area on Desktop. The sources used are from ffmpeg-0. avi ffmpeg -f oss -i /dev/dsp0. mp4 -s 1920x1080 -r 60 -strict -2 -filter:v "setpts=0. Create some kind of URL link file? (I tried but didn't show up in AllShare. Additionally ffscreencast will let you overlay. Byzanz — Simple screencast tool that produces GIF animations. Below we've selected a list of the best open source screen recorders for 2019, from desktop software (running on Windows, Mac, Linux) to browser add-ons. Very usefull to create presentation or tutorials. js Posted on September 9, 2017 This brief post will tell ya how to create a live stream and to make it available to any user that has a web browser. Guess what? Full 60 fps! So now I know it's not a kernel or system load problem. Yet developing an illustration in real-time is boring, similar to watching paint dry. 04, custom-built Ubuntu) to my office machine, I started having serious audio/video sync issues when producing screencasts using recordmydesktop. Headless Chrome is a mode where Chrome can run in an environment where there is no UI, for example a server. Recording -> Type -> Custom Output (FFmpeg) FFmpeg Output Type -> Output to URL; File path or URL -> udp://224. : Thought we might take another try at screencasting. OTOH, if I understand correctly your setup, you display a webcam output on screen and grab that with x11grab. avi but getting right window size isn't something I want to do by hand. It’s a java-based application and depends on JRE 8 and ffmpeg. screencast in WinXP. ffmpeg -f alsa -i pulse -f x11grab -s 1920x1080 output. I didn’t find a way to change the type of recording video format in GNOME Screencast, but I have a nice workaround. In that one we covered editing and joining clips, fading between clips and exporting our video. Now, he suggets…. I forked the ffmpeg tool I referenced, as I was dissatisfied with the state of affairs with Ubuntu's ffmpeg/avconv and the code for the ffmpeg tool was pretty. [Page 2] Libav (Avconv) Imposition on Users who want FFmpeg. mp4 In this command, -f x11grab tells FFmpeg that you want to capture a part of X11 display – that is, it asks FFmpeg to record your screen. Brief: In this article, we list you the best screen recorders for Linux. I recommend always recording at least 60 fps, especially when recording effects, transitions or any kind of animation. You might need to change the input device, you can list them with arecord -l. 0 -sameq /tmp/screencast. [email protected] 0 -vcodec huffyuv screencast. if this is the "worst" case scenario for the bears it's really not that bad if a top hasn't already been formed, we're close. The best case scenario for the bulls is that this count plays out. How to grab the desktop (screen) with FFmpeg or theFFmpeg Streaming Guide. Hello FFmpeg people and users! (and Hello Gentoo people, indirectly!) While I heavy-heartedly, since a few hours ago, abandoned all my work. Download in other formats: Plain Text; Powered by Trac 1. The latest stable version 3. Record your screen into high quality video. Screencasting with ffmpeg tutorial location: linuxquestions. (How I got Exile to run acceptably under wine, though, is a story for another day. Now we can edit the mkv, cut out failures, add noise filter, text or effects etc. Synchronizes audio and video properly (a common issue with VLC and ffmpeg/avconv). $ ffmpeg -f -i "1" -f avi udp://192. In this article we will explore two of the relatively lesser known tools for screencast on Ubuntu. CraigS, I cannot thank you enough for your help and great care. if I could force ffmpeg to drop or duplicate frames if audio/video is not in sync that would be totally OK for me, but as far as I understand the manual for ffmpeg's -vsync option, this is already the default. Here, the -target option tells ffmpeg to convert the file into an NTSC-compatible DV video. 1:9999 This is a multicast address which means any pc on your local network can receive the stream. Convert media files like a geek: a guide to video transcoding with Avconv Posted by Immanuel on October 3rd, 2016 Tagged Tech , Linux , Avconv , Lightworks , Video , Record system audio , spotify , screencast. There is a nice help page by the ffmpeg developers recommending to do encoding after recording, but this does not seem to make a lot of difference in my. After you have recorded a session in. Bash ffmpeg posted on March 3, 2010 by matpolster; FFMpeg base Bash ffmpeg posted on January 7, 2010 by Homitsu; Convert. 40 GHz 12 MB de caché, 32 GB de RAM), pero por desgracia se ejecuta Windows 7. However, I'm rather clueless about all this, so I have no idea how to input this stream into UMS. This will record a lossless video using the 'huffyuv' codec at 1024x768 resolution at 25 frames per second. Screencasting on Slackware Linux using ffmpeg Posted on October 7, 2012 by lysender So I have this Slackware 14. Addendum to the first installment: yet more on screencasting with ffmpeg With a recent upgrade ( apt-get dist-upgrade to 12. OK, I Understand. ffmpeg -f x11grab -s 1280x800 -r 25 -i :0. Once you create a screencast, use one of the file hosting sites listed above to upload it and then paste the link to it to the appropriate thread in the forum. mpg The next section shows how to verify that the _qsv codecs use the GPU. I'll try to either find another version that does work, or try to fix the bug myself and submit a patch. It has all the tools needed to record screen, edit screencast videos & HTML5 elearning contents. ppm image files stored in the local ‘screencast’ directory. , rom, screen. screencast in WinXP. Screencast con ffmpeg:captura video de tu pantalla en linux. This is where a powerful tool like ffmpeg becomes useful. OTOH, if I understand correctly your setup, you display a webcam output on screen and grab that with x11grab. Wikipedia has a good comparison of screencasting software and list of screencasting software. The original source can be found here: FFMpeg Source ADDENDUM FOR THE USE OF Cisco-Provided Binary of OpenH264 Video Codec. (Vnc2flv is a rewrite of its predecessor, vnc2swf. mp4 In this command, -f x11grab tells FFmpeg that you want to capture a part of X11 display – that is, it asks FFmpeg to record your screen. FFmpeg is a very simpleRead More →. How to Compile ffmpeg,libvpx and x264 I am new to screencasting and want to be able to copy TV programs from my computer (Linux). I capture my videos using Kazam on Ubuntu, usually by resizing my second monitor to 800x600 and then capturing that. It allows to see how another person works through the eyes of this person. I tried other screencasting apps, probably all of them and they either simply don't work or they crash my computer (kazam). Really basic Blender video editing screencast: Part 2 A few weeks back I did my first Blender screencast showing how to do a few simple things with video using Blender. FFmpeg is able to use audio and video streams from many different sources. Creating a screencast. How to grab the desktop (screen) with FFmpeg or theFFmpeg Streaming Guide. dmenu/rofi (optional) interface to select and upload screenshots and gifs to imgur with the help of slop. I'm trying to create a screencast for playback on the web. The -vcodec parameter is necessary because ffmpeg doesn't support theora by itself. It will auto-detect all available monitors, cameras and microphones and is able to interactively or manually choose the desired recording device(s). Screencast Localization. You must install a directshow screen capturer and then can you use ffmpeg with -f dshow. gif -r 10 tells ffmpeg to reduce the frame rate from 25 fps to 10-s 600x400 tells ffmpeg the max-width and max-height--delay=3 tells gifsicle to delay 30ms between each gif--optimize=3 requests that gifsicle use the slowest/most file-size optimization. This gets updated when I use something new. Use the concat demuxer. avi -f mp3 audio. The more I change audio codecs to fit the flv container (that is the format which I'm trying) the more I'm thinking it's the codecs part. The software installer includes 28 files and is usually about 90. js Posted on September 9, 2017 This brief post will tell ya how to create a live stream and to make it available to any user that has a web browser. ffmpeg -f x11grab -s 640x480 -r 10 -i :0. The output follows. Today, I brought my shiny new nexus 4 into work. Intinya adalah kita menyuruh si ffmpeg tuk merekam langsung sesi X11 yang ada, nanti si ffmpeg akan langsung meng-encode si video ke file dalam format dan pengaturan yang menurut saya cukup bagus. We use cookies for various purposes including analytics. FFmpeg's VP9 Decoder Faster Than Google's 101 Posted by timothy on Sunday February 23, 2014 @07:50AM from the healthy-competition dept. Posts and writings by heiko. I didn’t find a way to change the type of recording video format in GNOME Screencast, but I have a nice workaround. $ ffmpeg -i capture. I have a few other issues with my project though. Streaming WebM to display in browser with HTML5 is currently quite problematic - none of the well-known streaming servers support WebM at the moment. app ), execute colmap gui if you installed COLMAP or execute. Just a simple command line, and you are taking your video. A while back, I wrote a script to do a live screencast of your desktop to a smart TV. The source to FFMpeg is not modified by Screencast-O-Matic. There are two steps to getting a usable video output. UScreenCapture is a desktop recording/screencasting driver for the Microsoft Windows® operating system. Record your screen into high quality video. Screencast is a screen recorder application. Tag: ffmpeg ubuntu install. 1BestCsharp blog 7,380,961 views. Very usefull to create presentation or tutorials. PNG file inside the target Screencast folder every time you release the mouse or a hotkey. Lastly, if you want to adjust the FPS of your AVI, try adding -framerate X when executing ffmpeg, where X is your desired FPS. Screencasting is the process of recording screencast - a video stream of picture from the screen (desktop, application or a single window). Visit the Trac open source project at. The problem is that some packages (cmake, protobuf, xcb first of all) fail on build. 5 GHz and 1 GB RAM, producing a screencast is a pain. Live streaming is not my highest priority, but if you're interested in streaming and you need some specific feature, feel free to contact me. View on GitHub Download (. 0 -vcodec mpeg4 -sameq -f alsa -i pulse -ar 44100 -acodec libmp3lame -ab 192k -ac 2 output. The term screencast compares with the related term screenshot ; whereas screenshot generates a single picture of a computer screen, a screencast is essentially a movie of the changes over time that a user sees on a computer screen, enhanced with audio narration. ffmpeg -f x11grab -s 800x600 -i :0. Screencasting with ffmpeg in FreeBSD. Screencast adalah rekaman digital dari komputer output layar, juga dikenal sebagai screen capture video, audio yang sering mengandung narasi. Another solution worth considering is RecordScreen. $ ffmpeg -i source. 0 -sameq screencast. yuk ke caranya buka terminal dan pastekan code berikut di terminal dan screencast otomatis dimulai saat itu juga. Here are some useful FFMPEG commands that you can make use of to manage your media files. If you are recording a screencast, make sure you set the bitrate high enough to avoid artifacts in the source material. Confession time: this tutorial is about a *lot* more than just API Platform. - It has been available since version 59. Screenpresso will possibly offer to download and install a codec (FFmpeg-codec), and we advise you to accept. I think http://sourceforge. In this section, we present a series of GA-based experiments to analyze several sample design considerations. Is there a way to fix this issue? ffmpeg screencast desktop-recording video-recording audio-sync. After that you can compress it at any time you want: ffmpeg -i grab. I've just added some tools to the screencast software page, it now lists Sizer, MouseZoom, ffmpeg and GSpot for Windows along with ffmpeg for Linux and Adobe Premiere for Windows and Mac. Screencast allow you to record your screen to HD and FullHD videos. There are several tools for Linux which can be used for screen recording. $ ffmpeg -i source. ffmpeg -f x11grab -s 1280x800 -r 25 -i :0. 264 encoded video file with resolution of 1024x768 and frame rate of 2 fps. Audacity is a great tool popular and cross platform to add sound or re-record your audio. py which is, as its name suggests, a Python script. Screencasting is the process of recording screencast - a video stream of picture from the screen (desktop, application or a single window). Directly records from OpenGL apps. avi file if already exists. There are many software to stream and record desktop on Ubuntu. FFmpeg is a quite handy app to quickly record the desktop or create a screencast in Linux, immensely useful to create tutorial videos. 0 and via sbopkg, I installed ffmpeg including all dependencies (required and optional) and its dependencies required/optional dependencies. Here is ffprobe -show_frames output for the mp4box mp4 that plays correctly (notice coded picture numbers 7,9,8):. If ffmpeg complains that it has no hq preset, then try some of the others. mp4 -f avi -vcodec msmpeg4v2 -r 26 -b 800K -acodec libmp3lame -ac 2 -ar 44100 -ab 64k video. There are several tools for Linux which can be used for screen recording. It tales a very long time to get rid of it, so do yourself a favor and use FFMPEG X, Handbrake, MPEG Streamclip, or other. Download this decoder to play an AVI or MOV file that. The sources used are from ffmpeg-0. Thank you so much for sharing this technique. Did you know? Turn on looping for your embedded video so it will play over and over and over and over and over and you get the idea. In this article, I’m going to describe how to create a desktop screencast recording with or without audio in Xubuntu 16. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. mpg ##### How to do Proper Screencasts on Linux Using FFmpeg: While many screencasting tools exist on Linux, none of them is able to really pull a high-quality screencast. Add a second image or video to your main footage, like a facecam for gaming. y4m file if you wished using ffmpeg or mencoder or something (thanks to Harald Sitter for this line). Here are some useful FFMPEG commands that you can make use of to manage your media files. It allows us to use a variety of inputs and. 10-ffmpeg gstreamer0. Today, we. Suppose you have a PC that stores all your music, downloaded podcasts, video podcasts, photos, and so on. Download in other formats: Plain Text; Powered by Trac 1. 264 mov files so ffmpeg will be the tool to use to do the transcoding into mov. 50 on cloudflare-nginx server works with 1953 ms speed. js Posted on September 9, 2017 This brief post will tell ya how to create a live stream and to make it available to any user that has a web browser. Perhaps you need to prepare some videos for training, demos, or other uses? Or make a killer youtube video of some geeky action from your desktop?. If so what command was used. I am using ffmpeg to. Free screen recorder tool. At work, we routinely use ffmpeg for conversion of various video formats into flv. If you have trouble getting UScreenCapture to use a higher frame rate check this tutorial. 5 GHz and 1 GB RAM, producing a screencast is a pain. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. This is no rocket science, I just don't want to google everytime I need it. I recommend always recording at least 60 fps, especially when recording effects, transitions or any kind of animation. First, why screencast? From e-learning to presentations, screencasting is a great way to demo your products and services. The source to FFMpeg is not modified by Screencast-O-Matic. ffmpeg-gif - shell script to convert video to high quality GIF with ffmpeg #opensource. Here is the dmesg for my mic by ART uaudio0 at uhub0 port 2 configuration 1 interface 0 "M-One USB" rev 1. Just a simple command line, and you are taking your video. The setup code is the same as homebridge. Additionally ffscreencast will let you overlay the camera stream on top of the desktop session. I have quite a few videos created with Jing that were saved to Screencast in. After that you are ready to go right away. It has live-streaming capabilities as well. [Page 2] Libav (Avconv) Imposition on Users who want FFmpeg. FFmpeg and its photosensitivity filter are not making any medical claims. Preparation. I didn’t find a way to change the type of recording video format in GNOME Screencast, but I have a nice workaround. After that you can compress it at any time you want: ffmpeg -i grab. avi -f mpeg2video -sameq mpeg2. Screencast is a screen recorder application. Today, we. Also, replace 'server' with your server address, and check the input dimensions (-s wxga above) and the output dimensions (VideoSize in ffserver. You may have to register before you can post: click the register link above to proceed. It allows us to use a variety of inputs and. You can use this command to create a screencast using ffmpeg. Posted on December 3, 2012 Author John Sonmez Categories HACKS/UTILS Tags linux screencast, record desktop linux, record terminal linux, screen recorder linux ubuntu 2 thoughts on "Record screen with ffmpeg on Linux". FFmpeg, by Fabrice Bellard, et al. mp4 In this command, -f x11grab tells FFmpeg that you want to capture a part of X11 display - that is, it asks FFmpeg to record your screen. But, if you are up to screencast your gaming experience then you are probably going to have some FPS-drop problems. OK, I Understand. Some Useful FFMPEG Commands (Screencasting, Rotate Video, Add Logo, etc. @severen Hi and thank you for the interest in this package. On Windows you can record your screen to an. Short status report – you should have created a project, added a reference to the AForge. I am planning to use FFMpeg to record my screen actions(for a screencast) for Windows and Mac. Standard Video. I'll try to either find another version that does work, or try to fix the bug myself and submit a patch. Dies gilt weltweit. ПК, который я использую, имеет аппаратное обеспечение (Intel Core i7-4930K с шестью ядрами 3,40. See also FFmpeg#Screen capture and Wikipedia:Comparison of screencasting software. ffmpeg screencast/desktop-recording with video overlay and multi monitor support. Screen Capture using Xvfb. Hi, I recorded some videos using FFmpeg on Ubuntu 14. 1:9999 This is a multicast address which means any pc on your local network can receive the stream. A screencast is a digital recording of computer screen output, also known as a video screen capture, often containing audio narration. Very usefull to create presentation or tutorials. With that long command, you’re screencasting. Watch a screencast for more information. $ FFmpeg -y -s -i input. Screencast adalah rekaman digital dari komputer output layar, juga dikenal sebagai screen capture video, audio yang sering mengandung narasi. January 24, 2017 by techedemic · 0 Comments. September 10, 2015 · If you make screenshots and share it to several people few dozen times per day you might appreciate the ability to do it quickly and in a secure way. This project was created 4 years ago, there might be better ways to turn a video into a GIF now, use google!. Screencasting is as simple as pasting the command above (one you’ve modified it to suit you) into a terminal. Also, replace 'server' with your server address, and check the input dimensions (-s wxga above) and the output dimensions (VideoSize in ffserver. On Linux ffmpeg can capture X11 screen with a command below: ffmpeg -f x11grab -r 25 -s cif -i :0. ogv file with any video player such as mplayer or vlc. 0 -sameq screencast. FFmpeg is a quite handy app to quickly record the desktop or create a screencast in Linux, immensely useful to create tutorial videos. One of the principal purposes of WikiProject Screencast is to provide an overview of available software and best practices for producing screencasts. Sometimes, to make our tickets more understandable, we include screenshots or screencasts. $ ffmpeg -i capture. Converting to web formats. Note that this filter is not FDA approved, nor are we medical professionals. VidGear is a powerful python Video Processing library built with multi-threaded Gears(a. webm -fs 5000k -pix_fmt rgb24 out. Here is the line. 0 -sameq /tmp/screencast. Μπορειτε να πεξετε με τις ρυθμισεις για να φτιαξετε το αρχειο στην επιθυμητει σας ποιοτητα. You can find more about it on the FFmpeg official website. ] If you're using KDE4 and have found the screencast feature ( System Settings > Desktop > [All Effects] : Video Record) you're probably wondering how to play the files it produces. Really basic Blender video editing screencast: Part 2 A few weeks back I did my first Blender screencast showing how to do a few simple things with video using Blender. The ffmpeg-muxed mp4 has pts's that are not in order, they match the coded_picture_number order. Screencasting is an important task for many people for many reasons including making a video tutorial, creating a presentation, compiling a how-to tutorial or do a software review or having the fun of streaming while playing pc games. The application displays a live preview of what is being recorded on video so you don't have any surprises during and after the recording. If FFmpeg is missing you can easily install it right from the same terminal by typing: sudo apt-get install. I didn’t find a way to change the type of recording video format in GNOME Screencast, but I have a nice workaround. Money is paid on code merge in the relevant project. See also FFmpeg#Screen capture and Wikipedia:Comparison of screencasting software. I am getting the audio device with this statement @ QString AudioDeviceName= Q. Camtasia offers a PowerPoint plug-in that turns your presentations into videos. 0 -sameq /tmp/screencast. ffmpeg -f x11grab -r 25 -s 1024x768 -i :0. It's a java-based application and depends on JRE 8 and ffmpeg. Screencasting with ffmpeg is not a hard job. On Linux ffmpeg can capture X11 screen with a command below: ffmpeg -f x11grab -r 25 -s cif -i :0. I capture my videos using Kazam on Ubuntu, usually by resizing my second monitor to 800x600 and then capturing that. Record from your computer and webcam simultaneously. To get started in Kino you must convert the captured video into the DV (Digital Video) format. 0 device (for the first instance of X). sudo dnf install peek ffmpeg gstreamer1-plugins-ugly Flatpak. 0+0,0 -vcodec libx264 -maxrate 15000k -bufsize 15000k -acodec libfdk_aac -b:a 32k -ar 11025 -f flv num55. There is a nice help page by the ffmpeg developers recommending to do encoding after recording, but this does not seem to make a lot of difference in my. 4 FFMpeg concat demuxer corrupted output (freezed video on some concatenated parts) 2016-04-26T14:57. Also note that if you just need “point to point” streaming, you can also use ffmpeg for the streaming, which tends to be faster and more reliable in my experience, though doesn’t have a nice GUI to help you 🙂. 0 /tmp/screencast. gif -r 10 tells ffmpeg to reduce the frame rate from 25 fps to 10-s 600x400 tells ffmpeg the max-width and max-height--delay=3 tells gifsicle to delay 30ms between each gif--optimize=3 requests that gifsicle use the slowest/most file-size optimization. ffmpeg -f alsa -ac 1 -i hw:0,0 -f x11grab -framerate 25 -video_size 1280x1024 -i :0. There are several tools for Linux which can be used for screen recording. I am using a framerate of 15 fps and a value of 2000M for the rtbufsize option. Posts and writings by heiko. While the command is running, you’ll be able to know exactly what FFMPEG is doing. I followed the instructions provided at https://trac. A slim PHP wrapper around ffmpeg to record screen,best for recording your acceptance test using s. Long ago (2006?) at a previous job, I used ffmpeg to do some screen recordings or "screencasts". Download this decoder to play an AVI file that is encoded with TSCC on a system where Camtasia is not installed. It is part of the Unreal Media Server. Screencasting with FFmpeg, jack_capture and Xephyr Introduction Not satisfied with the quality of the screencasts made with recordMyDesktop I started looking for an alternative that might yield better results, especially the video part. This method known for giving the best results for capturing screen and is one of the the most flexible methods. Under openbox, I get a black overlay when running silentcast (). Guess what? Full 60 fps! So now I know it's not a kernel or system load problem. 2a Final By bobiras2009 torrent or any other torrent from the Applications Android. How To Play Screencast Video Recorder Demo APK On PC,Laptop,Tablet. While creating a screencast, If I want to speak, that should appear in the capturing stream. The app stands out by offering users a rich choice in output formats. How to Compile ffmpeg,libvpx and x264 I am new to screencasting and want to be able to copy TV programs from my computer (Linux). Current popular options are either Java-based stream-m and experimental 2. bat , Mac: COLMAP. Afrikaans Shqip አማርኛ العربية Հայերեն Azərbaycan dili Euskara Беларуская мова বাংলা Bosanski Български Català Cebuano Chichewa 简体中文 繁體中文 Corsu Hrvatski Čeština‎ Dansk Nederlands English Esperanto Eesti Filipino Suomi Français Frysk Galego. Capture Screen with ffmpeg / screencast. Lancer la création d'un screencast quelconque avec la commande ffmpeg. mov -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > out. png screencast. prahladyeri. They often have a terminal or notepad open on the screen were the content author "narrates" the video by typing comments rather than speaking. The following other wikis use this file: Usage on ar. It grabs frames from my webcam (a Logitech Pro 9000) at 320×240 resolution. flv -s 352×288 -b 512 -ab 128 output. It allows us to use a variety of inputs and. He co-founded the screencast tutorial site ShowMeDo in 2005 (used by 50,000 people a month) and founded the professional screencasting company ProCasts in 2008. ffmpeg) submitted 7 hours ago * by HarmonicAscendant Hi, just spent the whole morning fiddling with FFMPEG and have finally got results with:. Camtasia offers a PowerPoint plug-in that turns your presentations into videos. ffmpeg -y -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1920x1080 -i :0. 10-plugins-good packages. 5 GHz and 1 GB RAM, producing a screencast is a pain. dmenu/rofi (optional) interface to select and upload screenshots and gifs to imgur with the help of slop. In my case I took 512x384. ffmpeg -f alsa -ac 1 -i hw:0,0 -f x11grab -framerate 25 -video_size 1280x1024 -i :0. I can play them just fine, but when I export them into Lightworks the most of the picture is shuttering black screen. SWF is the only format it will create video in. Did you know? Turn on looping for your embedded video so it will play over and over and over and over and over and you get the idea. Addendum to the first installment: yet more on screencasting with ffmpeg With a recent upgrade ( apt-get dist-upgrade to 12. Tools For Screencasting On Your Windows Desktop Ryan Matthew Pierson / 26 May 2015 / Play Text and still images can document a computer process or describe software features well, but video can do. It captures a VNC desktop session (either your own screen or a remote computer) and saves as a Flash Video (FLV) file.