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Perito informático analizando grabaciones de vídeo digitales y cámaras de videovigilancia

Digital forensic analysis of video recordings

Today, digital video recordings are frequently used as evidence to support or refute relevant facts in legal proceedings. Their submission as evidence may require an assessment of their origin, authenticity and integrity, particularly when questions arise regarding how they were obtained, preserved or provided.

Simply viewing a recording does not make it possible to determine whether the file corresponds to the original video or whether its integrity has been preserved. A digital video may have been copied, converted to another format, trimmed, edited, assembled from different fragments or generated using artificial intelligence. It may therefore be necessary to examine the file, the source device and the content of the recording in order to assess its reliability.

What do we analyse in a forensic examination of digital video recordings?

  • Preservation and chain of custody: acquisition and preservation of the recording using procedures that make it possible to demonstrate its integrity and document the actions carried out during the examination.
  • Origin, authenticity and integrity of the recording: examination of the file and, where available, the recording device to assess its origin, determine whether it corresponds to the original file and identify possible signs of cuts, added fragments, removed sections, format conversions or editing processes.
  • Metadata and technical structure analysis: examination of recorded dates, duration, format, codec, resolution, frame rate, bit rate, software used and any other technical information available within the file.
  • Continuity of the recording: review of the video sequence to identify cuts, jumps or repetitions that may require explanation. These observations are assessed together with the metadata and file structure, as an isolated anomaly does not by itself demonstrate that the video has been manipulated.
  • Verification of date, time and location: analysis of the temporal and geographical information associated with the recording and comparison with visible elements in the video when sufficient information is available to perform this assessment.
  • Visual enhancement and frame extraction: processing of working copies to facilitate the observation of specific elements through adjustments to lighting and contrast, reduction of camera movement and noise reduction. Individual frames may also be extracted for examination, while always preserving the original file and documenting the operations performed.
  • Analysis of possible artificial intelligence manipulation: examination of the file and its content to identify indicators consistent with the artificial generation or alteration of the video. The results are assessed using different techniques and taking into account the current limitations of detection tools.
  • Independent expert review of video recordings: review of the videos and expert reports submitted by the opposing party to determine whether their conclusions are supported by the files examined and the methodology applied.
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Do not put the judicial assessment of your digital evidence at risk Require an official university degree in Computer Engineering

Spanish Law 12/1986 of 1 April recognises the full professional powers and responsibilities of technical engineers within their respective fields of specialisation and expressly includes the preparation of expert assessments, studies and reports .
In the field of information technology, the Resolution of 31 March 2026 of the General Secretariat for Universities expressly includes, among the competences associated with official university qualifications leading to the profession of Technical Engineer in Information Technology, the knowledge required to carry out measurements, calculations, valuations, appraisals, expert assessments, studies and information technology reports .
Entrusting a digital forensic examination to a person who cannot provide evidence of an official university degree in Computer Engineering may seriously compromise the defence of the case. The opposing party may challenge the expert’s qualifications, the methodology applied and the technical reliability of the conclusions, weakening the evidential value of the expert report and placing at risk digital evidence that may prove decisive in the proceedings.
Given the risk of unqualified professional practice in this field, before commissioning a digital forensic examination, make sure that the professional holds an official university degree in Computer Engineering , has proven experience, is professionally registered and possesses specific knowledge of the subject matter under examination.
Qualifications, experience, registration with officially recognised professional bodies, rather than mere membership of private associations , the methodology applied, the proper preservation of the chain of custody and respect for fundamental rights are essential elements in providing the court with an expert report that is technically rigorous, reliable and defensible before the court .
In our Frequently Asked Questions section, we explain how to verify the official qualifications, professional registration and legal authorisation of a digital forensic expert witness.

Why hire a digital forensic expert from FORENSICTECH ?

At FORENSICTECH , we provide every client with a team of qualified digital forensic experts under the direction of Hossaín Mimón, a registered digital forensic expert witness . Our objective is to provide the proceedings with digital evidence that is technically sound, traceable and understandable to lawyers, judges and courts.
By engaging our services, you benefit from:
  • Digital forensic experts holding an official university degree in Computer Engineering, registered with officially recognised professional bodies and legally authorised to prepare and defend expert reports before the Spanish courts.
  • Experience and specialisation in digital forensics and digital evidence , with each analysis adapted to the specific circumstances and requirements of the proceedings.
  • Forensic tools and specialised software for carrying out rigorous, verifiable and technically reliable analyses.
  • Professional methodology and proper preservation of the chain of custody , essential for maintaining the integrity, traceability and reliability of digital evidence.
  • Clear, well-founded and comprehensible expert reports , with an orderly presentation of the methodology applied, the results obtained and the conclusions reached.
  • The option of professional body certification of the expert report , where appropriate or requested by the client, as verification of the expert’s identity and professional authorisation and of the correct formal presentation of the document.
  • Court testimony and technical assistance at trial , with the ability to explain and defend the conclusions of the expert report before the court.
  • Services throughout Spain , with availability to participate in legal proceedings anywhere in the country.
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