not abuse its discretion in ruling “that the tapes were self-authenticating, and also to a degree corroborated” by other evidence. Id. (internal quotation marks omitted). In child pornography cases, the authentication requirement applies “essentially the same way it does to any similar item of evidence in any type of case.” United States v. Berringer, 601 F.Supp.2d 976, 980 (N.D.Ohio 2008). The government must produce evidence sufficient to support a finding that the item is what the government claims it is — in this case, a video that the defendant received or possessed. This can be done by offering testimony from an investigator who was present when the video was retrieved and can describe the process used to retrieve it. See United States v. Salcido, 506 F.3d 729, 733 (9th Cir.2007) (<HOLDING>); Berringer, 601 F.Supp.2d at 980 (holding that
holding that the psychological injuries related to the initial abuse were not sufficiently disaggregated from those arising from the viewing of the images because the counselors report did not show the victim suffered any harm from the continued viewing andor spread of the images holding that the trial court did not abuse its discretion by admitting the governments proffered document notwithstanding a break in the chain of custody because the government offered substantial corroborative evidence tying the document to mejia and the brief tenminute gap in the chain of custody made implausible that it was planted tampered with or misidentified holding that pornographic videos and images were properly authenticated where the government presented detailed evidence as to the chain of custody specifically how the images were retrieved from the defendants computers holding that foreign bank documents found inside a persons home were properly authenticated holding that government must introduce relevant evidence in addition to the alleged pornographic images to prove that images depict real child