CSIRO Film Collection: videos 900 - 998 - compressed versions

CSIRO produced its first film in 1946. It was a two-hour, five-part epic in black and white designed for a specialist audience of Commonwealth scientists meeting in London. It showed them - in the most graphic way possible at the time - the nature and extent of the research facilities of an organisation embarking on the problems of post-war reconstruction.\n\nWithin a few years, a permanent film unit was established and began to specialise in producing films for the specific audiences on particular areas of research.\n\nBy the 1960's, it became apparent that many of the films were of interest to a much wider audience. Schools, colleges and universities were beginning to introduce the audio-visual medium to the learning process and CSIRO films were in increasing demand. Makers of television programmes looked to CSIRO films for images of science not yet accessible to the public eye.\n\nLineage: These files are compressed video in a MP4 container (.mp4). For archival quality video, look for the uncompressed versions in "Related Links". While some files may differ, generally this collection has the following attributes. Video codec: H264 - MPEG-4 AVC (part 10) (acv1). Video resolution: 720x576. Frame rate: 25. Decoded format: Planar 4:2:0 YUV. Audio codec: MPEG AAC Audio (mp4a). Audio sample rate: 44100 Hz. Bits per sample: 32. AAC Extension: SBR.

澳大利亚联邦科学与工业研究组织（CSIRO）于1946年制作了首部影片。该片全长两小时、分为五个篇章，为黑白史诗作品，专为在伦敦参会的英联邦科学家这一专业受众打造。影片以当时最为直观的视觉呈现方式，展现了该机构着手解决战后重建难题之际，其研究设施的全貌与覆盖范围。

短短数年内，该机构便设立了常设影视部门，并开始专注于针对特定研究领域的目标受众制作专属影片。

到20世纪60年代，诸多CSIRO影片的受众群体已明显拓展至更广范围。当时中小学、学院与高校正逐步将视听媒介融入教学环节，CSIRO出品的影片需求与日俱增。电视节目制作方也纷纷从CSIRO的影片中获取公众尚未得见的科学影像素材。

文件谱系：本批次文件为封装于MP4容器（MP4 container）内的压缩视频，文件扩展名为.mp4。若需获取存档级画质视频，请至“相关链接”中查找未压缩版本。尽管部分文件存在个体差异，但本数据集整体具备以下通用属性：视频编码格式为H264 - MPEG-4 AVC（第10部分，编码标识acv1）；视频分辨率为720×576；帧率为25帧/秒；解码格式为平面4:2:0 YUV；音频编码格式为MPEG AAC音频（编码标识mp4a）；音频采样率为44100Hz；采样位深度为32位；AAC扩展特性为SBR。