Questions tagged [video]
Any method of storing, transmitting or playing motion pictures.
64 questions
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If the video only has one frame, then Widevine won't work?
I'm curious about Widevine, and I've done some search on it, and I've heard that it's protected by repeated frame-by-frame encryption and compounding, so if the video only has one frame (or that frame ...
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In theory, can you get hacked through watching streaming services?
I kind of get it that you can get hacked by loading up an image, as there can be code embedded in the file that may execute under certain circumstances, and the image itself won’t even look much ...
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Cheap unhackable secuity cameras (perhaps with usb transfer)? [closed]
Cheap unhackable secuity cameras (perhaps with usb transfer)? The key is that it should not be hacked by anyone (i.e. they will need access to my room to tamper with it). I have up to 200 pounds to ...
user309528
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0
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378
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Does the browser pass the name of the camera being used to the website [closed]
Does the browser pass the name of the camera being used to the website which is accessing our camera like when we use obs virtual cam so is the website able to detect that a virtual camera is being ...
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Are the video calls made in a 3G/4G network encrypted end-to-end?
When I make a video call through a cellular GSM/4G network, is there any end-to-end encryption? If yes, what kind of algorithms and CPUs are used?
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Can a website owner prove that I downloaded their video? [duplicate]
I am currently in a state of panic right now, because of a mistake I've just made.
I bought time-limited access to a website with video content for a year and now and my access is about to expire. ...
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2
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669
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Chance of virus/malware and non-executable files
I’ve seen this question being asked so many times, but I still have questions.
I know that to execute malicious code from non-executable files such as videos (mp4), audios (mp3) and documents (pdf), ...
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What might one want to accomplish by running ffmpeg -i video.mp4 -map 0 -map_metadata 0:s:0 -c copy video.mp4 in terms of forensics?
In the eighth episode of the second series of Mr. Robot, Trenton
does this to the video that was recorded by a VHS camera before releasing it to the public via Vimeo.
ffmpeg -i fuxFBI.mp4 -map 0 -...
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What can a virus hidden in a video do and will the video be playable?
Based on existing answers, I found out that viruses can "hide" in a video by exploiting the software/libraries used to open the video, say ffmpeg. But my question is:
If a video contains ...
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Can malware spread through HDMI, Display Port or USB
I have to give a presentation at my university. In the room where I'm going to give the presentation, there is a projector with a HDMI, Display Port, or USB connection. I will have to plug one of them ...
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Could videos be authenticated using private and public keys?
I saw a news report about now freely available software to make "deepfake" videos. Couldn't videos be internally marked using a private key, so that everyone could verify the originator ...
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What are some safe ways to play a video file that was downloaded from the internet? [duplicate]
I would like to know what are some safe and easy ways to play a media (in particular, video) file that I downloaded from the internet, from an untrusted source. I know that if I use an open-source ...
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Mp4 virus scanners
I used to download a lot of mp4's from untrusted sources. But I discovered that they could contain malware. I would like to know if there are any methods to clean or to check video files for malware.
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How to mitigate the impact of a malicious monitor or display?
Consider someone has updated the firmware of you PC monitor, notebook or smart device display.
What capabilities does the attacker now have? Could he reinfect your device or some other device where ...
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243
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Data I/O and decryption when playing a movie file in a device encryption context
What does the storage data I/O and decryption process look like in a device encryption context when you play a random middle portion of a big movie file (e.g. 50 GB). Does the whole file have to be ...
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In a physical pen test, is there a way to figure out FOV of a tinted dome camera?
With bullet cameras, this is easy. You look which way they are pointing and then either guess their FOV, or even look them up based on how the model they appear to be.
Most dome cameras are behind ...
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Could there be malware in a video on twitter? [duplicate]
I don't know anything about security.
I want to download the videos I like from twitter. And I'm not going to do it by writing a program. I will manually find the necessary link in the html document ...
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Can a video file contain code that shares your identity? [duplicate]
Could a video file contain code that reveals and sends your ip/mac address or give access to personal files to somebody else? Would normal video players (like VLC) be able to notice that kind of ...
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Security risks associated with embedding YouTube videos in a web application that needs authentication
We are developing a web application. It has several features so the first time the user enters it shows a short video explaining how to use it. We use the iframe approach to embed a video from YouTube ...
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Protection against malformed video
https://threatpost.com/high-risk-vlc-media-player-bugs/147503/ shows attacks with carefully crafted video files.
Can I protect my local users against this?
I imagine the attack will abuse the file ...
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Is it possible to make a video that is provably non-manipulated?
Suppose a student takes an exam at home. Since home-exams are prone to cheating, the student wants to be able to prove that he/she did not cheat. So the student puts cameras in the room, which ...
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Is the video/audio traffic from WebRTC TURN relay servers encrypted end-to-end? As with the applications Signal and Jitsi Meet
Today I found a video on YouTube that surprised me (https://www.youtube.com/watch?v=Pkc3sE6iKV4). It is by Rob Braxman, a privacy advocate with a lot of expertise.
He talks about all kinds of video ...
user244515
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3
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546
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How to make sure that no one is watching you through webcam?
I have heard that intelligence agencies and hackers can illicitly gain access to a computer's webcam and microphone and keep a close eye on people using suspicious programs or malware.
Is there any ...
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1
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How a website knows if a video has been watched or downloaded?
There's a video lecture streaming on a university platform that runs javascript. Can the system detect if I'm downloading the video (via IDM) rather than just watching it? In other words, how can a ...
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1
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How to check if an mp4 file contains malware?
I am not that familiar with security and malware analysis, but I know it is theoretically possible to embed a malware into files like video, audio ...
Say that someone managed to embed a malware ...
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406
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How to check big video file if can't check it entirely?
There size limit on VirusTotal, some videos are very big. What if cut off part from the video and send part of it. Is it possible? What part of it, where malware can be?
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Allow only YouTube videos and block other videos
I have a MikroTik router. I want to allow only Youtube videos and block all other videos. I tried to write an extended ACL but I really have no idea. Maybe allow only Youtube videos source URL and ...
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Is it possible to track someone by sharing a youtube link with timestamp?
Is it possible to track someone by sharing a youtube link with them with a timestamp such as &t=1s if they click on it on their end?
I've recently have been told not to use timestamps because of ...
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Is a cryptographically signing camera possible?
What kind of digital / cryptographic signing would make it possible to create a camera that cryptographically signs the photos it takes so that the images can be verified to have been taken with that ...
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How to inject a malware in a video
Is it possible to trigger an antivirus program to alarm by playing a video? I don't want to run malware, I only want the AV to do something. Can I put EICAR in the metadata?
The video file shoudn't be ...
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957
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How do HTML5 DRM addons protect their output?
HTML5 has a DRM framework Encrypted Media Extensions (EME), that allows DRM companies to create content decryption modules (CDM) to decrypt DRM protected content. Browsers should use a sandbox to run ...
- 3,472
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Are those animated video thumbnails generate the same DNS from actual videos?
I have a very technical question about the latest feature shown on those video platforms, like YouTube and other.
There’s been a trend lately that the classic still image thumbnails have been ...
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Local Video Screenshot during Netflix
I was just binge watching Netflix from my MacBook Pro on a TV streamed using HDMI. It automatically started the final episode of the season but about 20 seconds into it, a screenshot from a local ...
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Is it possible to verifiably timestamp a video?
I am wondering if there is a way to timestamp a video. (e.g. Security camera footage)
I know that there is a way to timestamp a document with a trusted time authority, and it will certainly be ...
user186505
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1
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How can faulty version of an iOS app (such as WhatsApp) expose the whole device to crashes or take-over
There was a lot of recent, prominent news about a security vulnerability in WhatsApp that affects also iOS versions of the app. The volnerability has been described as carrying the risk of an attacker ...
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How does video protection work when someone is recording their screen?
I forgot to turn my video recorder off and accidentally recorded my screen when I watched some series on some website. When I re-watched the video a few weeks later, I noticed that the part where the ...
user168683
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1
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253
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Digital watermarking for detecting Copyright infringement - video file of customer A and B have same SHA Checksums?
Sometimes I buy in a online shop video files (mp4). The online shop forces it's customers to buy with verified real name. In case of leaking his content the shop can identity who leaked it. I don't ...
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Can my cell phone company access videos and other documents on my old cell phone?
I have my old smartphone with me, with the old sim card still inside. When I received that phone 4 years ago, it was locked by my cell phone company. However, I am not using it at the present moment, ...
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1
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Has anyone actually been hacked by video subtitles?
This morning's news brought this story:
Hackers are hiding computer viruses in film subtitles, security experts warn
Where they warn that subtitles in videos played on computers could be used to ...
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What considerations would need to be taken into account when purchasing a house with multiple smart home appliances?
TL;DR - Sister in law buying a house full of smart junk, she wants to keep it, but is afraid of the previous owner spying on her or gaining access to her home. Can this be mitigated while keeping said ...
- 699
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Can a website know whether I'm streaming or downloading content?
I'm taking a paid online course in which the videos are streamed through Flash. After much trouble such as quality fluctuations, unexpected changes in playback speed and frozen screens (also ...
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Video Steganography Dataset [closed]
Does anybody knows a video data set worth for stenography tests?
I searched many many times but I couldn't find sth good.
Thanks
- 111
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Could YouTube downloaded videos be infected (by Youtube)?
I downloaded Youtube videos, but found out just now it is illegal. I thought that if Mozilla page has add-on for that, it must be legal!
Could Youtube videos be infected? Could Youtube infect them to ...
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1
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Is it "normal" to find procedures in the middle of a .mov file with a disassembler?
I used hopper disassembler to see if there was any strange activity on this particular mov file. What was bizarre and unexpected was
This .mov file is particularly strange such as it seems to lower ...
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1
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243
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Malware through HTML 5 player
Just curious if it is possible to get malware through a trusted site hosting an HTML 5 player.
I would imagine since Chrome is in a sandbox, nothing download to your computer?
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3
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Can Tor Browser prevent ISP or IT Department at a Work place from knowing what i do while watching a Video online from a work computer (not mine)? [duplicate]
I must change the security settings of Tor browser to the lowest to be able to play a Video online, yet i have not tried it till now.
That is why i got to think, whether it is unsafe to play online ...
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1
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Tails OS doesn't erase video memory
As stated succinctly in the Tails "Known Issues" page:
Tails doesn't erase the video memory yet. When one uses Tails, then restarts the computer into another operating system, that other ...
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How does HDCP detection work?
What is the mechanism used by websites like HBO GO to detect HDCP bypassing/violation? How foolproof is this mechanism, as the logic lies on the client side?
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Tutorial Video Protection on a Tablet
I am planning to start tutorial videos. I thought of buying a tablet and then putting the videos on the tablet. My major concern is that the students shouldn't be able to copy the videos. They ...
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2
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Downloading a video without website noticing that you're not just watching it?
I want to download video, but I want to download it in a way that you can't see that the video hasn't been just watched, but downloaded. Is there a a way to do that?
The only thing I can think of is ...
