video-preservation-aic-presentation

A I MI N G F O R P E R F E C T … BU T C O N TE N T W I TH P R A C TI C A L ! V IDEO P RESERVATION AT BUIOH S TEVEN S I ELAFF S ENI OR E DI TOR & C OLLECTI O N M ANAGER B AYLOR U NI VERSI TY I NSTI TUTE FOR O RAL H I STORY T HE D ECISION : A UDIO VS V IDEO  Is it Required?  What is the Impact?  Extra Personnel  Extra Equipment & Training  Extra Storage Footprint  Audio hour = GB or less,  Video hour (HD) = 15-30 GB V IDEO F ORMATS Video oral history records consist of many formats, compression schemes & codecs! PC  VS MAC I SSUE Containers - AVI (PC) vs MOV (Mac)  Video drifts toward Mac culture  AVI prioritized years ago by LoC  MOV proprietary, but agreeable in Macland + Quicktime (also Apple support)  Both systems represented in Baylor Digital Library & BUIOH, but Macs the video work M AC P RO W ORKHORSES P RESERVATION P RIORITIES I S IZE File stats for codecs, compared to uncompressed:  Uncompressed 100 GB/hour  ffv1 45 GB/hour  ProRes422 20 GB/hour  H.264 MP4 GB/hour II L OCATION III A CCESSIBILITY IV M ETADATA C URRENT BUIOH P OLICY B ORN -D IGITAL V IDEO W ORKFLOW Record in h.264 MP4 tracks (currently 1080p @ 35mbps) Digital Library concatenates tracks into master Optional MKV wrapper for metadata (submitted as Google Sheet fields) Master placed on spinning disk Optional automated MP4 access copy process C URRENT BUIOH P OLICY D IGITIZED V IDEO E XPERIMENTATION P HASE E XPERIMENTATION P HASE FFV1 codec + Metroska (MKV) Video wrapper  Metadata fields needed?  Worth the extra step?  Worth the extra size? S HIFT TO P RO R ES 422  Best compression for the file size  Virtually lossless  Works well with Final Cut Pro  Able to keep it on spinning disk (1/2 the size) W ORKFLOW Create uncompressed files through digitization Transcode to Pro Res 422 Apply MOV wrapper w/ Name field MD only Move to spinning disk Delete raw files (LTO backup option) Optional automated MP4 access copy process …A NY Q UESTIONS ????