EVIDENCE 13: CCTV 3 FOOTAGE WAS CONVERTED FROM COLOR TO GRAYSCALE BY MUHAMMAD NUH AL-AZHAR
The 37 Scientific Evidence of Digital Evidence Tampering on CCTV Footage at Olivier Café: The Jessica Kumala Wongso Case (2016), Carried Out by Muhammad Nuh Al-Azhar and Christopher Hariman Rianto, Who were Under the Leadership of the General Crime Director of the Jakarta Metropolitan Police, Krishna Murti, and the Chief of the Jakarta Metropolitan Police, Tito Karnavian.
EVIDENCE 13: CCTV 3 FOOTAGE WAS DELIBERATELY CONVERTED FROM COLOR TO GRAYSCALE RIGHT WHEN MIRNA SALIHIN ARRIVED AT OLIVIER CAFE AT 17:18 LOCAL TIME
This evidence showed that the CCTV 3 footage was deliberately converted from color to grayscale right when Mirna Salihin arrived at Olivier Cafe at 17:18 local time. Based on the available information, the following was a digital forensic analysis related to this case.
The CCTV 3 video was split into two files: CH03_15.55-17.18.MP4 (color video) and CH03_17.18-18.45.MP4 (grayscale video). This change occurred precisely at the time of Mirna Salihin's arrival, which was very suspicious given the importance of visual information during that period. The video starting at 17:18 local time was converted from color to grayscale, removing color information present in each YUV channel, according to its metadata in the statement by Muhammad Nuh Al-Azhar. This conversion resulted in the loss of crucial color information related to objects, such as the coffee cup and Mirna Salihin's skin tone.
In the Examination Report (BAP) presented by Muhammad Nuh Al-Azhar, the metadata of the CCTV 3 video indicated that the video had a YUV color space, suggesting that the original video was recorded in color format. The presence of the YUV color space in the metadata strengthened the evidence that the video was initially in color before being converted to grayscale.
This loss of visual information had serious forensic implications. For instance, at 17:30 local time, Devi Siagian carried the coffee cup from table 54 to the cocktail bar. The color information of the coffee cup could have indicated any color changes allegedly caused by hazardous substances like cyanide. Additionally, at 17:28 local time, Mirna was taken out of the cafe in a wheelchair. The color of Mirna's face and arms could have provided clues about her physical condition, such as signs of poisoning or allergic reactions.
This color manipulation destroyed the video's credibility as evidence, suggesting an attempt to conceal important information. This action was carried out by Muhammad Nuh Al-Azhar and Christopher Hariman Rianto, who should have been responsible for maintaining the integrity of every bit of information in the video. This manipulation showed a serious breach of professional ethics and raised doubts about their analytical results in this case.
The manipulation of the CCTV 3 footage was a very critical act. The removal of color information from the video was highly detrimental because such information was essential for analyzing the volume and color of the coffee as well
EVIDENCE 13: CCTV 3 FOOTAGE WAS DELIBERATELY CONVERTED FROM COLOR TO GRAYSCALE RIGHT WHEN MIRNA SALIHIN ARRIVED AT OLIVIER CAFE AT 17:18 LOCAL TIME
This evidence showed that the CCTV 3 footage was deliberately converted from color to grayscale right when Mirna Salihin arrived at Olivier Cafe at 17:18 local time. Based on the available information, the following was a digital forensic analysis related to this case.
The CCTV 3 video was split into two files: CH03_15.55-17.18.MP4 (color video) and CH03_17.18-18.45.MP4 (grayscale video). This change occurred precisely at the time of Mirna Salihin's arrival, which was very suspicious given the importance of visual information during that period. The video starting at 17:18 local time was converted from color to grayscale, removing color information present in each YUV channel, according to its metadata in the statement by Muhammad Nuh Al-Azhar. This conversion resulted in the loss of crucial color information related to objects, such as the coffee cup and Mirna Salihin's skin tone.
In the Examination Report (BAP) presented by Muhammad Nuh Al-Azhar, the metadata of the CCTV 3 video indicated that the video had a YUV color space, suggesting that the original video was recorded in color format. The presence of the YUV color space in the metadata strengthened the evidence that the video was initially in color before being converted to grayscale.
This loss of visual information had serious forensic implications. For instance, at 17:30 local time, Devi Siagian carried the coffee cup from table 54 to the cocktail bar. The color information of the coffee cup could have indicated any color changes allegedly caused by hazardous substances like cyanide. Additionally, at 17:28 local time, Mirna was taken out of the cafe in a wheelchair. The color of Mirna's face and arms could have provided clues about her physical condition, such as signs of poisoning or allergic reactions.
This color manipulation destroyed the video's credibility as evidence, suggesting an attempt to conceal important information. This action was carried out by Muhammad Nuh Al-Azhar and Christopher Hariman Rianto, who should have been responsible for maintaining the integrity of every bit of information in the video. This manipulation showed a serious breach of professional ethics and raised doubts about their analytical results in this case.
The manipulation of the CCTV 3 footage was a very critical act. The removal of color information from the video was highly detrimental because such information was essential for analyzing the volume and color of the coffee as well
Category
📚
LearningTranscript
00:00Australian resident Jessica Wongso has been charged with the murder of Minis Alihin.
00:11Police allege she poisoned her friend by adding cyanide to her coffee.
00:15Jessica is like a devil.
00:17Deep inside is something like that, evil.
00:22It is said that the trial of the century is true.
00:29Evidence 13, CCTV 3 footage was deliberately converted from color to grayscale right when
00:35Myrna Salihin arrived at Olivier Cafe at 1718 local time.
00:40This evidence showed that the CCTV 3 footage was deliberately converted from color to grayscale
00:45right when Myrna Salihin arrived at Olivier Cafe at 1718 local time.
00:51Based on the available information, the following was a digital forensic analysis related to
00:56this case.
00:58The CCTV 3 video was split into two files, CH03-15.55-17.18.mp4, color video, and CH03-17.18-18.45.mp4,
01:14grayscale video.
01:15This change occurred precisely at the time of Myrna Salihin's arrival, which was very
01:19suspicious given the importance of visual information during that period.
01:24The video starting at 1718 local time was converted from color to grayscale, removing
01:29color information present in each YUV channel, according to its metadata in the statement
01:34by Muhammad Nuh Al-Azhar.
01:37This conversion resulted in the loss of crucial color information related to objects, such
01:42as the coffee cup and Myrna Salihin's skin tone.
01:45In the examination report, BAP, presented by Muhammad Nuh Al-Azhar, the metadata of
01:50the CCTV 3 video indicated that the video had a YUV color space, suggesting that the
01:56original video was recorded in color format.
01:59The presence of the YUV color space in the metadata strengthened the evidence that the
02:03video was initially in color before being converted to grayscale.
02:08This loss of visual information had serious forensic implications.
02:12For instance, at 1730 local time, Devi Siajian carried the coffee cup from table 54 to the
02:19cocktail bar.
02:21The color information of the coffee cup could have indicated any color changes allegedly
02:26caused by hazardous substances like cyanide.
02:29Additionally, at 1728 local time, Myrna was taken out of the cafe in a wheelchair.
02:36The color of Myrna's face and arms could have provided clues about her physical condition,
02:40such as signs of poisoning or allergic reactions.
02:43This color manipulation destroyed the video's credibility as evidence, suggesting an attempt
02:49to conceal important information.
02:52This action was carried out by Muhammad Nuh Al-Azhar and Christopher Harriman Rianto,
02:56who should have been responsible for maintaining the integrity of every bit of information
03:00in the video.
03:02This manipulation showed a serious breach of professional ethics and raised doubts about
03:06their analytical results in this case.
03:09The manipulation of the CCTV 3 footage was a very critical act.
03:13The removal of color information from the video was highly detrimental because such
03:17information was essential for analyzing the volume and color of the coffee as well as
03:22Myrna Salihan's physical condition.
03:25This act indicated an effort to hide crucial evidence that could have revealed the actual
03:29facts of the incident.
03:31The video metadata indicating the use of the YUV color space suggested that the video was
03:36originally recorded in color, which should have provided complete visual information
03:41to ensure justice and the integrity of the legal process, a re-evaluation of the existing
03:46evidence and decisive action against the ethical violations by the involved digital
03:50forensic experts were necessary.
03:54Forensic impact explanation, the deliberate conversion of the CCTV 3 video from color
03:58to grayscale has significant forensic implications.
04:02The color information in the original footage is vital for accurately analyzing and understanding
04:08events captured by the camera.
04:10When this information is removed, critical details are lost, which can severely impact
04:15the investigation.
04:17For instance, the color of objects such as the coffee cup and the skin tone of individuals
04:22can provide essential clues regarding the presence of substances or the physical condition
04:27of the individuals involved.
04:28The absence of this color data undermines the ability to draw accurate conclusions from
04:33the video evidence.
04:35The manipulation of the video raises questions about the integrity of the evidence.
04:40By altering the original footage, the credibility of the evidence is compromised.
04:45This act of tampering suggests an attempt to conceal important information that could
04:50be crucial to the case.
04:52In a forensic investigation, maintaining the authenticity of evidence is paramount.
04:57Any alterations can cast doubt on the entire body of evidence, making it challenging for
05:01investigators to establish a clear and accurate narrative of events.
05:06This manipulation not only affects the current case, but also sets a dangerous precedent
05:11for future investigations.
05:14The presence of YUV color space metadata in the original video indicates that the footage
05:18was initially recorded in color.
05:21This metadata serves as a digital fingerprint, verifying the original format and providing
05:26a basis for identifying any unauthorized changes.
05:30The conversion to grayscale, therefore, represents a deliberate act of altering the evidence.
05:36The forensic impact of this manipulation extends beyond the loss of visual information.
05:41It highlights a breach of protocol and ethical standards by those responsible for preserving
05:46the integrity of the evidence.
05:48This breach can lead to questions about the reliability of other evidence handled by the
05:52same individuals.
05:54The loss of color information has practical implications for the forensic analysis.
05:59For instance, the color of the coffee cup could indicate contamination by hazardous
06:03substances or not, which may not be detectable in grayscale footage.
06:08Similarly, the color changes in a person's skin can provide vital clues about their health
06:13and physical reactions at the time of the incident.
06:16Without this information, forensic experts may be unable to accurately assess the situation,
06:21potentially leading to incorrect conclusions and hindering the pursuit of justice.
06:26The grayscale footage limits the scope of forensic analysis and diminishes the overall
06:31effectiveness of the investigation.
06:33Lastly, the ethical implications of manipulating video evidence cannot be understated.
06:40Those responsible for altering the footage, Mohamedna Al-Azhar and Christopher Harriman
06:44Rianto, violated their professional duty to maintain the integrity of the evidence.
06:50This action demonstrates a significant breach of trust and raises serious concerns about
06:55the conduct and credibility of the forensic experts involved.
06:59For the legal system to function effectively, it is crucial that evidence is handled with
07:03the utmost care and professionalism.
07:05Addressing this ethical violation is essential to restoring confidence in the forensic process
07:11and ensuring that justice is served in this case and future investigations.