{"@context":"http://iiif.io/api/presentation/3/context.json","id":"https://medex.aviaryplatform.com/iiif/m901z42h1z/manifest","type":"Manifest","label":{"en":["1-Introduction"]},"logo":"https://d9jk7wjtjpu5g.cloudfront.net/organizations/logo_images/000/000/042/original/Medex_Forensics_Logo_White_2022_%281%29.png?1693506512","metadata":[{"label":{"en":["Description"]},"value":{"en":["\u003cp\u003eOverview of Medex and important concepts for success as a user.\u003c/p\u003e"]}},{"label":{"en":["Language"]},"value":{"en":["English (primary)"]}},{"label":{"en":["Keyword"]},"value":{"en":["Overview","Structural Signatures"]}}],"summary":{"en":["\u003cp\u003eOverview of Medex and important concepts for success as a user.\u003c/p\u003e"]},"provider":[{"id":"https://medex.aviaryplatform.com/aboutus","type":"Agent","label":{"en":["Medex Forensics"]},"homepage":[{"id":"https://medex.aviaryplatform.com/","type":"Text","label":{"en":["Medex Forensics"]},"format":"text/html"}],"logo":[{"id":"https://d9jk7wjtjpu5g.cloudfront.net/organizations/logo_images/000/000/042/original/Medex_Forensics_Logo_White_2022_%281%29.png?1693506512","type":"Image"}]}],"thumbnail":[{"id":"https://d9jk7wjtjpu5g.cloudfront.net/collection_resource_files/thumbnails/000/111/870/small/thumbnail_111870_1619631951.jpg?1619617552","type":"Image","format":"image/jpeg"}],"items":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870","type":"Canvas","label":{"en":["Media File 1 of 1 - 1-Introduction-Draft-1-new.mp4"]},"duration":220.118,"width":640,"height":360,"thumbnail":[{"id":"https://d9jk7wjtjpu5g.cloudfront.net/collection_resource_files/thumbnails/000/111/870/small/thumbnail_111870_1619631951.jpg?1619617552","type":"Image","format":"image/jpeg"}],"items":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/content/1","type":"AnnotationPage","items":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/content/1/annotation/1","type":"Annotation","motivation":"painting","body":{"id":"https://aviary-p-darkhorsepodcast.s3.wasabisys.com/collection_resource_files/resource_files/000/111/870/original/1-Introduction-Draft-1-new.mp4?1619617536","type":"Video","format":"video/mp4","duration":220.118,"width":640,"height":360},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870","metadata":[]}]}],"annotations":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064","type":"AnnotationPage","label":{"en":["English Transcript [Transcript]"]},"items":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/1","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Medex is a novel, patent-pending, non-content-based approach to video source identification and authentication, meaning that it does not rely on any visually displayed information in its analysis.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=0.569,10.05"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/2","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Instead, Medex focuses on the way that a file is constructed, its structure, along with other information contained within a video's binary data to identify the camera or source device that created it, as well as any transmission of that file or software that has passed.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=11.37,25.11"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/3","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Medex will also run a battery of tests to detect any manipulation to the file's metadata at a bite level.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=26.641,31.44"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/4","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"In order to better understand how to use Medex, let's take a look at how a file is constructed. Video files are made up of different elements called objects. In most files we deal with, these objects are termed atoms or boxes. For the purposes of this demonstration, we'll call them boxes. The same way to reference in the ISO based media file format like MP4 and MOV files to better understand the use of boxes that make up a video file.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=32.22,56.91"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/5","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Let's look at the file as if we were building a brick wall where each brick will represent a box. When we build this brick wall, there are very stringent requirements for the construction of each brick, one of which is that the brick must be labeled with a unique four character code identifying the type of brick and wood it contains. Additionally, bricks must be made up of specific ingredients and parts, as well as identify the size of the brick.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=57.57,81.27"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/6","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"For example, a brick may have three parts water, four parts cement and five quartz clay and be four inches by five inches or b two parts water, three parts sand and four parts clay and be six inches by nine inches.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=81.99,96.12"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/7","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Once we have our bricks and meet the stringent specifications, there are very little requirements in which order we use them to build our wall and different construction crews and tools can put them in any order specific to them.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=98.48,109.37"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/8","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"When our walls constructed, we can identify the types of bricks used as well as their order by the four letter code identifying each brick. Since different construction crews build walls using specific types of bricks and a specific order, we can start to identify who built the wall by the arrangement of the bricks that make it up.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=109.73,126.89"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/9","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"In looking at video files, there are specifications that it must be adhered to in order to build valid boxes or bricks for files to be encoded on one device or software program and then played back on a variety of devices around the world. These specifications also define many of the four character codes used to identify individual boxes and understand their function.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=128.41,148.24"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/10","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Each camera that records a video file or software a video file passes through has unique construction method, recording the boxes it uses to build a file as well as the arrangement of the boxes. Medex parses this information and identifies this box structure from the file. That specific arrangement is then analyzed to produce a structural signature unique to the device that created the file.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=149.23,171.07"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/11","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"Much like an automated fingerprint identification system, Medex takes that structural signature and compares it against a robust reference library of known signatures to reveal a device where a group of devices that have the same signature when we talk about structural signatures is important to delineate that Medex had not used any of the actual metadata values. To this point, signature is solely based on the boxes that make up a video file and is not affected by metadata values or the lack thereof.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=171.97,199.18"},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/12","type":"Annotation","motivation":"transcribing","body":{"type":"TextualBody","value":"In addition to structural signature analysis, Medex will run a separate device classification analysis. This probabilistic classification approach, uses a combination of structural analysis with specific metadata values to return a result. We will cover this approach in more detail later in the series.","format":"text/plain"},"target":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870#t=200.59,217.55"}]},{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064","type":"AnnotationPage","label":{"en":["English [Transcript]"]},"items":[{"id":"https://medex.aviaryplatform.com/collections/1452/collection_resources/40221/file/111870/transcript/26064/annotation/13","type":"Annotation","motivation":"subtitling","body":{"type":"TextualBody","value":"https://d9jk7wjtjpu5g.cloudfront.net/file_transcripts/associated_files/000/026/064/original/data?1620748190","format":"text/vtt","language":"en"},"target":"https://d9jk7wjtjpu5g.cloudfront.net/file_transcripts/associated_files/000/026/064/original/data?1620748190"}]}]}]}