Is there any program to find what camera shot some downloaded footage. Here is the media info. is there any program like media info to tell what camera or even the sensor size
General
Complete name : C:\Users\movie.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 12.6 MiB
Duration : 1 min 1 s
Overall bit rate : 1 706 kb/s
Writing application : Lavf57.25.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 1 s
Bit rate : 1 542 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.067
Stream size : 11.4 MiB (90%)
Writing library : x264 core 118
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=22.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=2000 / vbv_bufsize=2500 / crf_max=0.0 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
Language : English
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1 min 1 s
Bit rate mode : Constant
Bit rate : 160 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 spf)
Compression mode : Lossy
Stream size : 1.18 MiB (9%)
Language : English
Default : Yes
Alternate group : 1
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if it's the original file from the camera it's possible there is exif data. but if it's downloaded from anywhere like youtube facebook etc. no. there are free exif data viewers you can get and use.
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"a lot of people are better dead" - prisoner KSC2-303 -
That is not the original file from the camera. It was re-encoded by x264. Any exif data from the original file is probably gone.
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Thanks. i have an exif viewer for photos but it does not work for video. What does writing library mean in media info? The codec used to write?
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"a lot of people are better dead" - prisoner KSC2-303 -
When I do media info of a clip from Nikon D3200 there is no writing application or camera listed
General
Complete name : C:\Users\sample.MOV
Format : MPEG-4
Format profile : QuickTime
Codec ID : qt 2007.09 (qt /niko)
File size : 18.2 MiB
Duration : 6 s 757 ms
Overall bit rate : 22.6 Mb/s
Encoded date : UTC 2016-03-09 13:47:37
Tagged date : UTC 2016-03-09 13:47:37
NCDT : NCTG
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Format settings, GOP : M=3, N=12
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 6 s 757 ms
Bit rate : 20.7 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.417
Stream size : 16.7 MiB (92%)
Language : English
Encoded date : UTC 2016-03-09 13:47:37
Tagged date : UTC 2016-03-09 13:47:37
Color range : Full
Color primaries : BT.709
Matrix coefficients : BT.601
colour_primaries_Original : BT.709
transfer_characteristics_Original : BT.470 System M
matrix_coefficients_Original : BT.601
Audio
ID : 2
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : sowt
Duration : 6 s 757 ms
Bit rate mode : Constant
Bit rate : 1 536 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Bit depth : 16 bits
Stream size : 1.24 MiB (7%)
Language : English
Encoded date : UTC 2016-03-09 13:47:37
Tagged date : UTC 2016-03-09 13:47:37
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as you found out not all cameras add exif data. you could try a hex editor to look inside the file to see if there's other hidden data. usually at the beginning or end of the file.
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"a lot of people are better dead" - prisoner KSC2-303 -
If you suspect a particular camera you can compare its characteristics, such as its fixed-pattern noise, against the video in question - if the video isn't too heavily compressed.
BTW, since modern printers add hidden steganographic codes, I wouldn't be surprised if cameras did too.Last edited by raffriff42; 18th Jun 2017 at 17:35. Reason: accidently a word 'compressed'
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It exists so the Secret Service can determine if your printer was used to make counterfeit bills -- after you have been caught using them. Using counterfeit bills isn't a crime if you don't know the bills are counterfeit. Showing that your printer printed the bills makes it much harder for you to claim ignorance.
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Is there a program for the lay person to read those codes?
Extraordinary claims require extraordinary evidence -Carl Sagan -
wikipedia:Digital_watermarking#Cameras
Blythe and Fridrich also have worked on SDC* in 2004 for a digital camera that would use lossless watermarking to embed a biometric identifier together with a cryptographic hash.
So the technology is there, but not implemented
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