Friday, 3 February 2012

Export for Dvd...

I have also exported the video if it was to go onto dvd. So I have exported it as Microsoft avi with Pal DV Widescreen quality. This will give me good video quality and sound quality then the one for the web. The audio size is stereo but i have increased the bitrate to 320kbps 44.8 Khz. This video will have better quality sound than before.

Export for Web


I have exported the video ready for the Web. I have changed the settings to high quality widescreen H.264. This will give me a small file size, good quality and widescreen because the footage was shot in that format. The audio is stereo at 192kbps 44.8 Khz. I could increase the bitrate of the audio to give me better quality sound but my file size would increase.

Research on File Formats

History of file formats discovered

An important difference between film and video is the shape of the frame. The height and width for this proportion is called aspect ratio. Up to the year 1952 standard film ratio of a frame was three units high by four units wide. (also expressed as 1:33:1). This was found by Thomas Edison. In 1953 a more lasting change was signaled after the 20th Century Fox brought out the biblical epic The Robe in CinemaScope. The development of wide-screen formats later followed. In 1940, Stereophonic sound also became standard after the introduces Disney`s Fantasia.

Still today the widest aspect ratio at 2.35:1 the CinemaScope remains although new moderately widescreen formats are used to shot films or the Standard Academy ratio of 1.85:1, or the foreign Theatrical standard of 1.66:1.

However,Wide-screen formats require special lenses on the camera and projector that permits the wide image to be compressed onto a normal film frame, then uncompressed when projected. These are called anamorphic. The old ratio discovered by Edisons old ratio of 1:33:1 remains the standard for ordinary broadcast television.

We now have advanced digital video systems for motion pictures(High Definition video). They are also wide-screen but use a unique aspect ratio of 1:78:1.

Reference: Benedetti, R, Brown, M, Laramie, B, Williams, P 2004, pp.22-23,Creative postproduction, Pearson Education,Inc.

From the research

I exported my final video in four different file formats to see what the differences were between them all. The final export will be the settings of a video that will be aimed to go on the web.

From this the differences were file size and quality of video. For example, Microsoft AVI was good quality but a large file size and H.264 was a reasonable file size but lost some colour to the video.

If I was to think about the end result being put on the Internet, then the file size would be more important then the colour lost so I would export the video out of Premiere as H.264, but if it was to go onto DVD then file size for this video would be okay to export as Microsoft AVI to have better quality.

For both exports I set them to wide-screen high quality.

Example of Lossless and Lossy:




Reference for image: http://www.pxleyes.com/blog/wp-content/uploads/essential-video-formats-for-cg-artists/lossless1.jpg

Development Final Stage

I exported my audio from Garage Band as a Wav file and imported into Adobe Premiere. I then increased the volume track of it using the audio effects in Premiere so that after its exported, when its viewed the volume will be at it its greatest for maxium volume control.