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WHICH TOOLS TO ANALYZE EXIF METADATA of IMAGES & VIDEOS ?

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(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

Hello,

I am doing a project on computer forensics and I need to analyze the EXIF metadata of Images (JPEG) & Video files taken from smart phone.

I have tried the below mentioned tools. I am little bit satisfied with EXIF Pro, but GPS/Location entries of images are not accurate as shown in picture properties in mobile , i.e EXIF Pro shows slightly different location from where the photos were taken .

1. EXIF Pro. (http//www.exifpro.com/)

2. Exif Viewer (https://download.cnet.com/EXIF-Viewer/3000-2193_4-75912951.html)

3. Exif Data Viewer. (http//www.exifdataviewer.com/)

4. ExifTool by Phil Harvey

Please recommend any best EXIF tool which gives best results for analysis of Images & Videos metadata.

Thank you

 
Posted : 04/05/2019 10:29 am
(@dandaman_24)
Posts: 172
Estimable Member
 

Have a look at irfanview.

 
Posted : 04/05/2019 12:04 pm
(@athulin)
Posts: 1158
Noble Member
 

… but GPS/Location entries of images are not accurate as shown in picture properties in mobile , i.e EXIF Pro shows slightly different location from where the photos were taken .

And what does that mean … 'slightly different'? What is the error? Are you saying that the tool desn't convert the EXIF data correctly?

Or are you saying that the GPS data, at the time it was collected, had an error that is larger than what you should expect from consumer equipment?

If it's the original data that happens to be wrong, no tool in the world can make it right without extra work. I hope that goes without saying …

 
Posted : 04/05/2019 12:16 pm
(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

Have a look at irfanview.

Ok Thank You, I will download it

 
Posted : 04/05/2019 1:10 pm
(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

… but GPS/Location entries of images are not accurate as shown in picture properties in mobile , i.e EXIF Pro shows slightly different location from where the photos were taken .

And what does that mean … 'slightly different'? What is the error? Are you saying that the tool desn't convert the EXIF data correctly?

Yes,, there is difference of some points in GPS coordinates values int tool exif info. Tool dont show the exact GPS coordinates where the photo was taken.

 
Posted : 04/05/2019 2:43 pm
(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

Have a look at irfanview.

I have tried irfanview now, Results of EXIF Pro & IrfanView are same approximately. irfanview supports VIDEO, but I could not found EXIF options for video.

 
Posted : 04/05/2019 2:51 pm
(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

Hi,

finally I have found a better EXIF reader which also gives most appropriate EXIF GPS locations (xyz coordinates) of IMAGES & VIDEOS as well.

The tool name is MediaInfo. MediaInfo is a convenient unified display of the most relevant technical and tag data for images, video and audio files.

MediaInfo can be downloaded from this link MediaArea.net

Thank you all for you kind replies.

 
Posted : 06/05/2019 4:23 am
(@athulin)
Posts: 1158
Noble Member
 

Yes,, there is difference of some points in GPS coordinates values int tool exif info. Tool dont show the exact GPS coordinates where the photo was taken.

And how did you establish 'the exact GPS coordinates'?

By extracting the data from the EXIF, and finding that the tool didn't do a good job converting it to text? In that case, what error did it introduce? (And

Or, by using a second source for GPS coordinate? In that case, was the original error within what is expected for consumer GPS coordinates? Or was it outside?

My problem is that it looks very much like you are choosing a product based on undisclosed test information. As long as you do it on your own, I have no quarrel with that. But when you do it in public, some attention to the technical grounds for your choice would be appreciated.

Absence of it is a pretty clear signal that this is not a trustworthy recommendation – at least in my opinion.

 
Posted : 06/05/2019 10:17 am
(@ahsan)
Posts: 72
Estimable Member
Topic starter
 

And how did you establish 'the exact GPS coordinates'?

By extracting the data from the EXIF, and finding that the tool didn't do a good job converting it to text? In that case, what error did it introduce? (And

Or, by using a second source for GPS coordinate? In that case, was the original error within what is expected for consumer GPS coordinates? Or was it outside?


Dear athulin,
Thank you for your concerns. Let me answer your questions and brief of my analysis

And how did you establish 'the exact GPS coordinates'?

There is nothing to worry, initially it was small misunderstanding. The properties of photo (LOCATION) in phone , where the photo was taken and the EXIF entries (of LOCATION) extracted by the tool “EXIFPRo 2.1” are same.

After testing several EXIF tools, I used EXIFPRo 2.1 because of its good results.

During this,. I came to know that, image properties in phone i.e location of image is shown in Decimal Degree (DD) Format i.e “34.381611, 73.464867”. However EXIF tools shows this location in Degrees, minutes, and seconds (DMS) i.e 34°22'53.8"N 73°27'53.5"E. Both are the same locations on the Google Maps.

By extracting the data from the EXIF, and finding that the tool didn't do a good job converting it to text? In that case, what error did it introduce?

Or, by using a second source for GPS coordinate? In that case, was the original error within what is expected for consumer GPS coordinates? Or was it outside?

In tool like EXIF Data Viewer , the GPS values were " GPS latitude34? 22 minutes and 53.794669 seconds north GPS longitude73? 27 minutes and 53.508187 seconds east" , The "?" was ambiguous. However the results are absolutely fine now as I have understanding of the GPS format.Most of the tools shown the very near locations of the expected results.

THE REST OF THE DETAILED ANALYSIS IS GIVEN BELOW FOR FURTHER REFERENCE

A. IMAGE (PHOTO) ANALYSIS

TOOL USED EXIFPro2.1

Original Photo
The original photo that is used for the analysis is shown in figure 1 below

Properties of the image in Phone
This figure 2 below exhibits the properties of image in phone

EXIF Properties of the image using ExifPro 2.1
The EXIF entries of the image is shown in figure 3 & figure 4 below

figure 3 below shows the metadata details, however the size of file is different as actual size shown in phone (refer to figure 2 above)

figure 4 below exhibits the GPS coordinates

Photo Location on GOOGLE MAP retrieved by EXIFPro and Image properties in Phone

Image properties of phone shows Location in Decimal Degrees (DD) i.e “34.381611, 73.464867” as shown in figure 2, while the tool "EXIFPro 2.1", gives GPS coordinates in Degrees, minutes, and seconds (DMS) i.e 34°22'53.8"N 73°27'53.5"E as shown in figure 4. This is the exact GPS location where I captured the picture as shown in Google Map in figure 5 below.

figure 5

Conclusion

Image location in phone properties and EXIF entries of location are found same on Google Map. Hence the Image GPS coordinates and other metadata evidences are established.

——-

B. VIDEO ANALYSIS

TOOL USED MediaInfo

This is the original video of riverside that was analyze as shown in fig 6 below

Properties of the VIDEO in Phone
This figure 7 below exhibits the properties of image in phone

EXIF entries of Location extracted from Video using the tool “MediaInfo”

Video properties are not found in phone except timestamp and file size as shown in figure 7, however this tools extracted the location in decimal degrees with tag “xyz” i.e +34.3809+073.4623/ " along with other several metadata information of this video as shown in fig 8 below.

figure 8 EXIF of Video

This location is shown in Google Map, and yes I found the best results as shown in figure 9

figure 9-Location of Video on Google Map

Conclusion

Video GPS coordinates with other metadata information has been established. However, the Timestamp extracted by tool is given in UTC format, if it is converted to Pakistan timezone. It gives the exact timestamp results.

….
Thanks

 
Posted : 07/05/2019 7:21 pm
passcodeunlock
(@passcodeunlock)
Posts: 792
Prominent Member
 

When it is about images forensics, I strongly suggest trying Amped Authenticate. In case of videos I suggest trying Amped Five. I'm not affiliated in any way with Amped, but from my experience they make the best tools I know into images & videos forensics.

Another good tool is the Belkasoft Evidence Center for similar tasks, but more complex and is not ment only for images & videos forensics.

 
Posted : 07/05/2019 9:39 pm
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