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Дата изменения: Wed Mar 12 19:48:58 2008
Дата индексирования: Sun Apr 13 00:42:44 2008
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Поисковые слова: aircraft

Revised: 1/23/08

American Institute of Physics Author Guidelines for Essential Multimedia Submissions
Essential Multimedia vs. Supplemental Multimedia Essential multimedia files are peer-reviewed and are considered to be necessary to an article to support the science presented in the article. In addition, it is believed that a complete understanding of the article is not possible without viewing or hearing the multimedia file. Because of this, essential multimedia files must be archived with the article, and are therefore subjected to a set of polices and procedures designed to ensure their archival integrity. Supplemental multimedia files serve to enhance the article, but are not considered vital to support the science presented in the article. Similarly, it is believed that a complete understanding of the article does not depend upon viewing or hearing the multimedia file. While attempts will be made to preserve supplemental multimedia files, they are not considered to be archival and are not subject to the policies and procedures established to preserve multimedia in an archival format. When preparing multimedia files as Essential Multimedia, authors need to understand that the archiving policies and procedures require limitations to be placed on the types of files which can be submitted with the manuscript. Acceptable Essential Multimedia files can be QuickTime Non-Streaming, MPEG, or DV files. In general, AVI files are not acceptable at this time as Essential Archival Multimedia files, although they may be submitted as supplemental files. Video Submissions Peer reviewed video submitted to the American Institute of Physics is accepted in the form of a digital video file. Acceptable file formats include QuickTime Non-Streaming (.qt or .mov), MPEG (.mpg), and DV (.dv). The preferred formats are .mov and .mpeg. Details about each of these file formats are outlined below. Video file naming convention to be determined In addition, either a representative "still" image taken from the video or a text caption is required for use as a placeholder for the video file in PDFs and print. These are not intended to convey meaning about the content of the video; rather it will be used as a static representation of the video file and be linked to the multimedia file. If an image is used, care should be taken to extract it from the video so it has reasonable clarity of fine lines and details. Acceptable file formats for still images are PS (.ps), EPS (.eps), and TIFF (.tif). An important note about AVI (.avi) video files: Multimedia files are typically created and encoded in a compressed format. Many of the compression algorithms used to create AVI files are proprietary, and result in files that do not pass AIP's archival policies and procedures. At the current time, AVI video files that do not pass the archival format test when submitted are not considered to be acceptable for Essential Multimedia. However, all AVI files are acceptable as supplemental multimedia files. Most applications offer the option of saving multimedia in a variety of formats. When saving a video file, authors should use the "Save As..." option and select .qt, .mpg, .mov, or .dv as the file type. 1 of 3

Revised: 1/23/08

Audio Submissions Peer reviewed audio files may also be submitted to AIP. Acceptable file formats include PCM (.pcm), WAV (.wav), AIFF (.aif), and MP3 (.mp3) at 128 Kbs or greater. Audio file naming convention to be determined. General Guidelines for all Multimedia Submissions At this time, AIP has not specified a maximum file size for submission; however authors are strongly encouraged to adhere to the following guidelines during file preparation: · The acceptable file formats outlined above are playable using standard media players such as QuickTime and Windows Media Player. Media players should be used to check file properties and image/sound quality prior to submission. For video submissions, fonts, lines, and image details should be of sufficient size and weight to be visible when played at half size. · Attention should be paid to the file size to make download time reasonable since streaming formats are not acceptable for submission at this time. A recommended target size for each multimedia file is 3-5 Mb. · Authors are encouraged to use one of the accepted compression codecs to minimize file sizes. · Animations must be formatted into a standard video file.

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Revised: 1/23/08

Multimedia Detailed Specifications
Acceptable Essential Multimedia Video File Formats · QuickTime Non-Streaming (.qt or .mov) o 24 Bit (Millions) Color o Video Compressor/Codec o Audio Uncompressed/None Animation Motion JPEG (MJPEG) DV NTSC DV PAL · MPEG o Video Compressor/Codec MPEG2 (.mpg) MPEG4 (.mpg or .mp4) o Video data rate 6Mbs or greater o Audio

48,000 samples per second 16 bit Uncompressed/PCM Stereo or Mono

48,000 samples per second 16 Bit Uncompressed (PCM) or MPEG Audio at 224Kbs or greater

·

DV (.dv) o DV NTSC o DV PAL PAL Video Parameters · Image size (H:V) 720:576 pixels · Frame Rate 25 frames per second

NTSC Video Parameters · Image size (H:V) 720:480 pixels · Frame Rate 29.97 frames per second

Acceptable Essential Multimedia Audio File Formats · PCM, WAV, AIFF, MP3 (at 128 Kbs or greater) o Audio Parameters 44,100 or 48,000 samples per second 16 Bit Stereo or Mono Supplemental Video File Format (not acceptable for Essential Multimedia files) · AVI (.avi) o 24 Bit (Millions) Color o Video Compressor/Codec o Audio Uncompressed/None 48,000 samples per second Motion JPEG (MJPEG) 16 Bit DV NTSC Uncompressed/PCM DV PAL Stereo or Mono 3 of 3