Temporary files listed by lsof don't exist

I like copying flash videos for offline viewing later. I used to do this by loading the video in the browser (Firefox or Google Chrome), then running this command to see where the flash file was being cached: lsof | grep ^Google | grep folders This will show all the temporary files Google Chrome has open at the moment, for example: ... Google 311 mike 21u REG 14,1 262148 17819373 /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.p22bCa Google 311 mike 22u REG 14,1 9974 17819369 /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.MUo4JT Google 312 mike txt REG 14,1 9974 17819369 /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.MUo4JT Google 312 mike txt REG 14,1 262148 17819373 /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.p22bCa ... etc None of the files exist, though: $ ls /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.p22bCa ls: /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/.com.google.chrome.p22bCa: No such file or directory Listing the directory doesn't show any files or directories like this existing: $ ls -lA /private/var/folders/zz/zzTLi2haPMrCYxEbpkwFmS+++TI/-Tmp-/ total 0 drwxr-xr-x 3 mike staff 102 Jul 24 18:14 TemporaryItems srwxr-xr-x 1 mike staff 0 Jul 24 12:10 com.apple.notify.206.32 srwxr-xr-x 1 mike staff 0 Jul 24 12:10 com.apple.notify.206.33 drwxr-xr-x 2 mike staff 68 Jul 24 18:25 hsperfdata_mike What's going on here? Why can't I access the temporary files? Since my goal is to copy the flash file for later viewing, is there anything else I can do?