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Video in learning process


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Video in learning process

  1. 1. Video in learning process Veronika Rogalevich [email_address]
  2. 2. What is video? <ul><li>Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion. </li></ul><ul><li>Video - „I see“, visual motion, picture and sound </li></ul><ul><li>Video is actively used in education and has a great pedagogical value </li></ul><ul><li>Video helps to engage students, it can be used as social learning activity... </li></ul>
  3. 3. Types <ul><li>Analog video (VHS, Betamax) </li></ul><ul><li>Digital video (DVD, Blu Ray Disk, QuickTime, AVI, WMV, MPEG4), recorded with digital video cameras </li></ul><ul><li>Digital video provides better quality and sharing opportunities(video is a file!) </li></ul>
  4. 4. Analog video standards
  5. 5. Display Resolution Standard One frame (width and length) Aspect ratio Picture size in video editing software DV-NTSC 720x480 4:3 720x534 DV-NTSC 720x480 16:9 960x534 DV-PAL 720x575 4:3 768x576 DV-PAL 720x576 16:9 1024x576 HDTV 1280x720   1280x576 HDTV 1920x1080   1920x1080
  6. 6. Aspect ratio <ul><li>4:3 : traditional television uses that, it can be used if You plan to put some slides or pictures beside the video picture (videolectures) </li></ul><ul><li>16:9: HDTV uses that, try to prefer this, because but pixels used in  digital video  often have non-square aspect ratios and DV standard corresponds to wide-screen formats. </li></ul>
  7. 7. Video cameras and medias <ul><li>Analog or digital, from 1990-nties DV is dominating) </li></ul><ul><li>Web-cameras (webcams), on laptops, iMacs etc. </li></ul><ul><li>Different cassetes </li></ul><ul><li>DV (Digital Video): small, medium ( DVCPRO, Panasonic) , large ( DVCAM) and extra-large ( DVCPRO XL ) . </li></ul><ul><li>All DV cassettes use tape that is ¼ inch (6.35 mm) wide. </li></ul><ul><li>Small or S-size is MiniDV cassette, most popular, are used for recording baseline DV, DVCAM as well as  HDV </li></ul>
  8. 8. DVCAM-L, DVCAM-M and MiniDV
  9. 9. File-based media <ul><li>Tapeless recording </li></ul><ul><li>Optical discs (DVD, Mini DVD) </li></ul><ul><li>Flash memory cards (SD cards) </li></ul><ul><li>Hard-disk drives </li></ul><ul><li>Sony  XDCAM  family of cameras can record DV onto either  Professional Disc  or  SxS  cards. </li></ul><ul><li>Panasonic DVCPRO HD and AVC-Intra camcorders onto  P2  cards. </li></ul><ul><li>Panasonic  AVCHD  camcorders record DV video onto  Secure Digital  memory cards. </li></ul><ul><li>JVC GY-HM750 records onto Secure Digita l (SD) or SxS memory cards. </li></ul>
  10. 10. Raw video <ul><li>Most DV and  HDV  camcorders can feed live DV stream over  IEEE 1394 interface   also called FireWire, to an external file-based recorder (i.e. computer) . </li></ul><ul><li>Video is stored either as native DIF bitstream or wrapped into an audio/video  container  such as  AVI ,  QuickTime  and  MXF . </li></ul><ul><li>DV-DIF  is the raw form of DV video. The files usually have extensions *.dv or *.dif. </li></ul>
  11. 11. Main raw formats <ul><li>DV-AVI  is Microsoft's implementation of DV video file, which is wrapped into an AVI container. This container is used primarily on Windows-based computers, though Sony offers two tapeless recorders, the HDD-based HVR-DR60 [16]  and the CompactFlash-based HVR-MRC1K, [17] for use with DV/HDV camcorders that can record in DV-AVI Quicktime -DV  is DV video wrapped into Quicktime container. This container is used primarily on Apple computers (MOV-files). </li></ul><ul><li>MXF -DV  wraps DV video into MXF container, which is presently used on P2-based camcorders (Panasonic) and on XDCAM/XDCAM EX camcorders (Sony). </li></ul>
  12. 12. Additional accessories <ul><li>Cables (USB, FireWire) </li></ul><ul><li>Microphones (wireless with transmitters, directional, condencer microphones) </li></ul><ul><li>Tripods </li></ul><ul><li>Chargers and batteries </li></ul><ul><li>Bags </li></ul><ul><li> </li></ul>
  13. 13. Types of educational videos <ul><li>Video lectures („ Talking head s“, tutorials ): main focus is the teacher who speaks directly to a live audience or the camera , with slides or without ) </li></ul><ul><li>Using authentic archive video material : digitized materials from libraries (, archives </li></ul><ul><li>Animated screenshots : animated screenshots of using software together with a soundtrack in the form of ‘mini-movies’ </li></ul><ul><li>Instructional 'how to videos' of a practical activity :  to show the process, procedures and different stages of doing something concrete </li></ul>
  14. 14. <ul><li>Interviewing an expert or expert presentation : guest speakers, who present an alternative viewpoint , used for further discussion s with students. </li></ul><ul><li>Video blogs 'think aloud‘: personal reflection of learner or teacher on some subject,  record their thoughts and actions , tone, humour and spontaneity. </li></ul><ul><li>Video case studies/simulations/role plays:  the intention is to simulate an event such as a lab experiment where safety might potentially be at risk or to engage in a role-playing situation in the form of a case study where the students can experiment with different responses and behaviors . Video in this case provides ‘real life’ context, and/or emotional impact </li></ul>
  15. 15. <ul><li>Videoing real events and situations: The purpose is to capture an action that cannot be physically brought into the classroom ( any outdoor event or situation, trips etc.) </li></ul><ul><li>Presentation/performance skills and feedback: The aim is to capture, review and enhance performance of individuals and groups through reflection and discussion . Recorded perfomances. </li></ul><ul><li>Students create their own video : the most interactive and pedagogically effective variant. Students create their own portfolios, participate in projects on concrete topics and record videos (upload them on the web). </li></ul>
  16. 16. Main processes <ul><li>Idea, purpose and scenario </li></ul><ul><li>Technical preparation </li></ul><ul><li>Flming </li></ul><ul><li>Importing video to computer </li></ul><ul><li>Editing </li></ul><ul><li>Publishing and distributing (usually online) </li></ul><ul><li>Embeding videos into learning environments, blogs, web-pages etc. </li></ul>
  17. 17. Technical preparation <ul><li>Charged batteries </li></ul><ul><li>Camera(s) in bags </li></ul><ul><li>Tapes or flash memory cards </li></ul><ul><li>Tripod </li></ul><ul><li>Microphones (charged) and properly adjusted </li></ul><ul><li>Light (if needed) </li></ul>
  18. 18. Filming <ul><li>Use the tripod! </li></ul><ul><li>Follow the scenario ( if you have one) </li></ul><ul><li>Make a number of scenes (do not film all the movie without stop) </li></ul><ul><li>Shoot one scene at least 2-3 times (so You can choose the best one) </li></ul><ul><li>Try different compositions and corners, general, portrait and detailed perspectives. </li></ul><ul><li>Film also some cover plans (some neutral objects around) to insert them in some long or boring places. </li></ul><ul><li>Zooming should be slow and smooth </li></ul>
  19. 19. Imorting your clips to computer <ul><li>Connect camera to your computer using FireWire or USB cables </li></ul><ul><li>or take out memory card and insert to the card-reader </li></ul><ul><li>Open video editing program </li></ul><ul><li>Choose Import video (Capture video, Add video) </li></ul><ul><li>Or just copy and paste clips from camera (phone) to hard disk of the computer. </li></ul>
  20. 20. Editing software <ul><li>Free and easy to use: Windows Live Movie Maker , iMovie , Pinnacle VideoSpin , Cinerella </li></ul><ul><li>Commercial and professional: </li></ul><ul><li>Avid – most popular, for PC and Mac </li></ul><ul><li>Adobe Premiere – compatiable with other Adobe products, for Mac and PC. </li></ul><ul><li>Pinnacle Studio – easy to use, enough possibilities </li></ul><ul><li>Apple Final Cut – professional software for Mac-platform </li></ul><ul><li>Cyberlink PowerDirector – new, easy to use, PC-platform </li></ul><ul><li>Corel VideoStudio – animation, 3D possibilities, PC. </li></ul>
  21. 21. Remember, commercial software manufacuters offer free trials for 30 days!
  22. 22. Publish your video <ul><li>Choose the putput file in your video editing program : wmv in Movie Maker, avi, mov, mpeg2, mpeg4, flv </li></ul><ul><li>Digital video requires a lot of space: 1 frame is 1 MB, 1 hour is 12,9 GB (uncompressed). </li></ul><ul><li>DVD capacity is usually 4 GB </li></ul><ul><li>Blu-Ray disks: from 25 GB to 200 GB (good for HD video) </li></ul><ul><li>Make a good quality file for DVD (AVI, MP4, MOV) and compressed smaller files for web (wmv, flv, mp2) </li></ul>
  23. 23. Compression standards <ul><li>H.264/MPEG-4 Part 10  or  AVC : standard for recording, compression, and distribution of high definition video (HDV) </li></ul><ul><li>MPEG-2 : lossy compression, used in DV broadcasting (satellite TV), DVD, Blu-Ray. </li></ul><ul><li>MPEG-4 : compression of AV data for web (streaming media) and CD distribution, voice (telephone, videophone) and broadcast television applications , Mobile phones (3GP ). </li></ul>
  24. 24. Share! <ul><li>YouTube : (2 GB, 15 minutes) </li></ul><ul><li>Vimeo : (500 MB per week, no time limits) </li></ul><ul><li>Veoh : (no time limits, 1 GB without Veoh Web Player and no limits if You have one!) </li></ul><ul><li>DailyMotion : (150 MB, 20 minutes) </li></ul><ul><li>TeacherTube: (100 MB) </li></ul>
  25. 25. Embed! <ul><li>Every video channel has embedding oppotunities (codes). </li></ul><ul><li>Copy the code and paste it to Your blog, website, learning environment in HTML-editor. </li></ul><ul><li>Let’s try: </li></ul><ul><li>Find and click the Share-button below videoclip and then Embed-button – you can see the code below, just copy it and paste to Your blog in HTML-view. </li></ul>
  26. 26. If You have some questions or comments, get in touch! <ul><li>Veronika Rogalevich </li></ul><ul><li>Educational technologist </li></ul><ul><li>Tallinn University Center of E-learning </li></ul><ul><li>[email_address] </li></ul>