I had the pleasure to work with some video editing resently. The background is that my sister got some 8mm cine film from our youth converted to a DVD. As this DVD contains clip from many different 8mm cine films mixed together, I would like to split them up and be able to combine them in a new way.<\/p>\n
I got the DVD as a dmg image from a mac, so the first thing was to see what kind of dmg image it was.<\/p>\n
xxx@stas ~\/Delta $ file film-compressed.dmg\nfilm-compressed.dmg: VAX COFF executable - version 8343<\/pre>\nThis type is a compressed image, so the first thing I need is to decompress it. For this a tool named dmg2img<\/a> is available in the Gentoo portage tree.<\/p>\ndmg2img -v film-compressed.dmg film-uncompressed.iso<\/pre>\nThen I can mount the image and copy the contents out. Now I have the raw data for my videos<\/p>\n
sudo mount -o loop -t auto film-uncompressed.iso isoMount<\/pre>\nThough was the vob files with error in the form of wrong length. Opening a file in vlc or another tool indicated a length of 9 seconds even though the clip was 3 minutes long. I fixed it together with a conversion using ffmpeg. So a quick script later, my computer was working on the conversion.<\/p>\n
#!\/bin\/bash\n\nFILES=.\/isoContents\/VIDEO_TS\/*1.VOB\n\nfor f in $FILES\ndo\n OUTPUT_FILE=`echo $f | cut -f 4 -d \"\/\" | cut -f 1 -d \".\"`\n OUTPUT_FILE=\".\/mp4Files\/${OUTPUT_FILE}.mp4\"\n echo \"Outputfile $OUTPUT_FILE\"\n ffmpeg -i $f -sameq -vcodec libx264 -acodec libfaac $OUTPUT_FILE\ndone<\/pre>\nNow I have prepared my data, and is ready to do the editing. For this I use kdenlive<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"I had the pleasure to work with some video editing resently. The background is that my sister got some 8mm cine film from our youth converted to a DVD. As this DVD contains clip from many different 8mm cine films mixed together, I would like to split them up and be able to combine them … Continue reading Preparing video for editing<\/span>