streaming video

Download Streaming Video

Post on 06-May-2015

245 views

Category:

Documents

1 download

Embed Size (px)

TRANSCRIPT

  • 1.Lets Stream! Using iMovie 2 An overview of video for streaming for the Internet

2. Workshop Agenda Video in instruction Tools and tips for streaming video Overview of iMovie 2 Hands-on with iMovie 2 Importing Editingand enhancing Exporting (video and computer files) 3. Two thoughts on video As part of the curriculum As an assignment within a curriculum 4. As a part of the curriculum When you are not in class Interesting topics Distance learning 5. About using video on the web Be aware of your audience! Bandwidth/connection speed? Processor speed? RAM? OS/browser/plug-ins? 6. As an assignment within the curriculum Another form of expression Engages students attention in content Useful technical skill 7. An example http://www.apple.com/education/dv/gallery/mov2.html 8. Finished video formats Video tapes Video files CDor DVD In multimedia production PowerPoint Hyperstudio On a webpage 9. Equipment needed Video camera Digital 8 Mini DV 10. Equipment needed Tripod Video tapes 11. Equipment needed FireWire cable iMac with iMovie 12. How do you stream? Take the best possiblevideo and audio! Use a tripod Less pans and zoomsthe better Use an external microphone Lighting is good 13. How do you stream? 14. How do you stream?codec Info Bandwidth 15. How do you stream?Bandwidth 16. Codec Compression-Decompression Makes video/audio files smaller so easier to transmit over the Internet Macs and PCs do not have the same default codecs 17. Example video footage H.263 compression, 12 fps, Keyframe rate = 99No audio compression 240 x 180 pixels QT file = 108 KB, AVI file = 697 KB5:17 seconds = 167 frames (or 167 individual pictures) 18. Possible compressionMultiple pictures that represent changes 19. Codecs apply to Bandwidth Images ImagesImagesSoundSoundSoundimages sound 20. Streaming codecsAs recommended by QuickTime for the Web 21. Audio Codecs Qualcomm PureVoice QDesign Music 22. Video Codecs Photo JPEG Motion JPEG Sorenson Video H.263 23. iMovies preset codec options Email Movie, small Web Movie, small Streaming Web Movie, small CD-ROM Movie, medium Full Quality, large Expert you set both video and audio 24. Is this a good video clip? 25. What was wrong? Background movements Bad zooms Horrible picture and sound quality Distracting transitions Small titles 26. How to improve it? Subtle background Portrait mode on video camera Use a tripod Stills are great! Zoom in from beginning or pan very slowly Slow down pan in iMovie 27. How to improve it? Get quality video and audio from the start Better to degrade than try to improve Good lighting Use transitions sparingly Remember change is bad! Large titles 28. Improvement 29. Lets get started!Using iMovie 2 30. iMovies Components 1Viewer2Bookshelf 3 Timeline 31. iMovies Components Eyeball view Clock view 32. Answers Pans and Zooms Large TitlesiMovie 2