Restoration of choppy video

[didrikus]

Hello!

I accidentally formatted my SD card without copying over a couple of videofiles. Lost files recovery managed to get some videofiles out, most of them really laggy and choppy. Is it possible to fix?

Link to video on dropbox

Kind regards,
Didrik

[johns0]

Nope,too late,plus your link requires adobe flash player so it looks suspicious.

[johnmeyer]

Nope,too late,plus your link requires adobe flash player so it looks suspicious.

Dropbox is a completely reputable site. In fact, it is probably the premiere site for collaborative file sharing. Yes, Adobe Flash has proven to be a technology with lots of security issues, but then again, so are most browsers, and the Windows O/S itself. It is why we are all having to download updates to each of these almost every day. I realize that Flash has been supplanted by HTML5 on many sites, but lots of places still use Flash (or Silverlight).

So, there is nothing the OP did wrong by posting a link to Dropbox, and he should not be penalized for that.

However, posting a link to a 1 GB file is going to make it difficult to get a lot of responses, because it takes too long to download such a large file. Despite that, I did download the file, and found nothing wrong with the video. It played fine, without any "choppiness." The audio has a beep at half second intervals, and was occasionally overcome by static. I can't tell where that came from.

So I am unable to duplicate the OP's problem.

[KarMa]

plus your link requires adobe flash player so it looks suspicious.

It's dropbox, never heard of it?

@OP - I would give PhotoRec a spin. Best recovery software I have found, and it's free.

[smrpix]

AH SHIT! BE VERY CAUTIOUS!

Video is a .mov file. Smart rendered it with TMPGenc. File reduced in size from 1GB to 169 mb. What's all the extra payload?
May have a quicktime exploit. May be innocent.

Do not download!

[johns0]

Drop box got nothing to do with files requiring adobe flash player,i will never install adobe flash player again and any file needing it i avoid.

[johnmeyer]

BE VERY CAUTIOUS!

Video is a .mov file. Smart rendered it with TMPGenc. File reduced in size from 1GB to 169 mb. What's all the extra payload?
May have a quicktime exploit. May be innocent.

Do not download!

Wow, this is a little over the top.

First of all, the Quicktime vulnerabilities that were in the news two months ago were all based on "potential vulnerabilities." No actual vulnerability was found.

Here is a quote from the PC Magazine April 19, 2016 article:

Security firm Trend Micro on Thursday warned that Apple will no longer issue security updates for QuickTime for Windows, leaving the software open to attacks. Worse yet, Trend Micro just identified two new, critical vulnerabilities affecting the platform. The company has not (yet) discovered any active attacks against these bugs, but issued an "urgent call to action" advising users to uninstall QuickTime for Windows right away to be on the safe side.

Second, if you do a Google search, you will not find any reference to scanning MOV files, or of any actual vulnerabilities in them.

https://www.google.com/search?q=MOV+video+virus&ie=utf-8&oe=utf-8#q=MOV+video+virus&tbs=qdr:y

This isn't to say that it is not possible, but only that viruses embedded in MOV files does not appear to have been reported by anyone and that the anti-virus companies therefore do not have anything on their "white lists" that can check MOV files.

Third, smart rendering isn't always smart, and perhaps it did re-render. This is a short video and with a fast computer, the difference between a smart render and actual re-encoding might not be too noticeable. Also, some camcorder videos contain GPS data, multiple audio tracks, and other stuff, although the size reduction reported seems much larger than could be accounted for by that.

Fourth, I really don't think a virus would occupy 800 MB of space, do you? Most virus code is incredibly compact, in order to conceal its presence. Thus, the reported size reduction must almost certainly have some other cause than a virus.

Finally, I did download and play the file using VLC (I don't have Quicktime installed, and never had, but only because it is bloated, awful software). The video is simply b-roll footage of some soldiers doing training exercises with three mortars.

If we want to chase away new people from this forum, this is certainly a way to do it.

I will be happy to take everything back if someone can scan the file and find something. I would actually appreciate a link to some software that can scan MOV files and find things, because clients send them to me all the time, and if MOV files really are a vector for bad stuff (which I don't think they are), then I'd like to have access to software that can help protect me.

[johnmeyer]

Drop box got nothing to do with files requiring adobe flash player,i will never install adobe flash player again and any file needing it i avoid.

Just to be clear:

1. The file itself does not require Flash. It requires a video player which can play MOV files encoded with Quicktime. As I previously indicated, I was able to play the MOV file with VLC, without Quicktime installed.

2. Dropbox still uses Flash (as did the biggest video site in the universe, YouTube, until about three weeks ago) to let users "stream" (sort of) any video, without having to first download it. I certainly don't have any issue with anyone's desire to avoid Flash, but the point I keep trying to make is that the user didn't do anything wrong, didn't violate any forum policy, and hasn't (AFIK) uploaded a file with a payload. He used the number one file sharing site (if you don't count Google drive), and it is that site's software that gives you the option of playing the file with flash. All you have to do to avoid this is to click on the "download" button in the upper right corner of the page, download the file, and play it. No Flash involved:



P.S. I did scan the MOV file, and the scan found nothing. I don't think this means much, because virus scanning always depends on the quality and timeliness of the white list. Put another way: anti-virus software is not very useful in stopping new viruses.

[johns0]

It requires adobe flash player to be viewed online,i didn't want to d/l it it,just view it quickly.

[johnmeyer]

It requires adobe flash player to be viewed online,i didn't want to d/l it it,just view it quickly.

Fair enough. I understand.

[theewizard]

It's been my experience
That downloading is faster than streaming
Do you mean you wanted to play a few seconds to see it, rather DL the complete file
What if there really was a problem but not in the first few seconds?

[smrpix]

@johnmeyer--

An abundance of caution certainly. As I said (as you've quoted me) may be innocent.

I'm certainly up to date on info about the QT exploits, and was about to post, as you did, not to worry about flash on dropbox. (You beat me to it.)

That said, what's the extra 900mb of data?

[johnmeyer]

That said, what's the extra 900mb of data?

That is a really interesting question. I don't have any modern versions of TMPGEnc installed. If I did, I'd try to duplicate your results.