Forum's post attachments are damaged/corrupted ? - Page 1
Forum section: electronics / general

author: BravoV
author_rank: Super Contributor
timestamp: October 05, 2015, 07:52:56 am
content: Searched few old threads here and stumbled on few old threads, actually not that old as it was just dated back in 2011.Almost all attached pictures/photos posted by different posters are corrupted and can't be viewed, and same results even those attached photos were manually downloaded to local computer.Example this thread, just watch all picture attachments starting from post #8 and forward ->https://www.eevblog.com/forum/beginners/how-to-better-wire-the-bnc-connector-and-ghz-issue/Edit : Example, usually the thumbnail is visible and when clicked it will expand the picture.

author: amyk
author_rank: Super Contributor
timestamp: October 06, 2015, 05:14:18 am
content: Yes, it looks likeevery occurrence of the byte value 13 (0dh)has been removed from those files. My guess issome process attempted to silently do a newline conversionto corrupt those files.

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 05:22:19 am
content: Is ti just this thread, orallold images?

author: BravoV
author_rank: Super Contributor
timestamp: October 06, 2015, 06:27:35 am
content: Dave, not sure, but I think something is really wrong happening right now at this forum.While I was trying to find other examples, remembered "Mechatrommer" from above example as old member here, so I searched his attachments history thru his profile, and was looking for attachments posted around March 2011 as above example's period, and apparently the image thumbnails were fine until you clicked it.Example at this thread here ->https://www.eevblog.com/forum/chat/salvaging-old-electronics-parts-and-save-the-world/Here, viewing the post for the 1st time "before" clicking the thumbnail.After I clicked, its now gone.Another example, going to click the 1st and 3rd thumbnails ...Now, they're gone too.

author: Philbywhizz
author_rank: Contributor
timestamp: October 06, 2015, 06:50:08 am
content: Can confirm.Thumbnails are showing, but the full size image isn't present.

author: TerraHertz
author_rank: Super Contributor
timestamp: October 06, 2015, 07:31:28 am
content: Also I'm noticing a lot of instances of completely missing images in threads from within the last month.For example:https://www.eevblog.com/forum/reviews/can-someone-please-identify-this/msg762163/#msg762163QuoteThere's obviously supposed to be an image, and others could see it originally, but nothing is there now.Any Win/Mac/Linux EOL reformat process that touches image files (and presumably binary files as well) needs to be taken behind the woodshed and dealt with severely.

author: amyk
author_rank: Super Contributor
timestamp: October 06, 2015, 08:21:28 am
content: If it helps narrow down when it occurred, I looked through Mechatrommer's attachments and found this is the first one that was corrupted - March 03, 2011, 07:04:58 PM:https://www.eevblog.com/forum/beginners/how-to-better-wire-the-bnc-connector-and-ghz-issue/?action=dlattach;attach=6235This is the last one - March 16, 2011, 03:44:08 AM:https://www.eevblog.com/forum/chat/what's-this-please-(component-advice)/?action=dlattach;attach=6499All attachments before and after that span appear to be OK.Another member with a corrupted attachment, this time a PNG, uploaded March 07, 2011, 03:12:43 AM:https://www.eevblog.com/forum/microcontrollers/'tricks'-to-connect-multiple-push-switches-with-minimum-io-usage/?action=dlattach;attach=6305(If only there was a way to findallattachments by date...)QuoteThat is one of theworstidiotic "features" ever put into a protocol. It's afiletransferprotocol; it shouldn't be doing anything other than transferring bytes verbatim between two systems.Quote from: TerraHertz on October 06, 2015, 07:31:28 amDifferent problem. Externally hosted image is no longer present. Nothing to do with this one.

author: BravoV
author_rank: Super Contributor
timestamp: October 06, 2015, 08:28:07 am
content: Quote from: amyk on October 06, 2015, 08:21:28 amI guess even these days, there are programmers are just so retarded that still can't tell the fundamental difference between human vs machine readable data.

author: Halcyon
author_rank: Unknown
timestamp: October 06, 2015, 08:34:08 am
content: Quote from: EEVblog on October 06, 2015, 05:22:19 amI've noticed this on a number of threads and have just shrugged it off as broken links etc... mind you I didn't bother to look more closely.

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 06, 2015, 08:58:28 am
content: It is certainly more than one thread:https://www.eevblog.com/forum/chat/whats-your-work-benchlab-look-like-post-some-pictures-of-your-lab/msg13710/#msg13710Click the thumbnails...

author: Andy Watson
author_rank: Super Contributor
timestamp: October 06, 2015, 09:21:36 am
content: Quote from: PA0PBZ on October 06, 2015, 08:58:28 amThat thread seems ok to me - all the thumbnails work with the exception of one picture that is possibly being displayed in its natural size.

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 06, 2015, 09:59:33 am
content: Quote from: Andy Watson on October 06, 2015, 09:21:36 amThat is very strange, this is what I see before and after clicking the thumbnail:EDIT: It works in Chrome and Firefox but it fails in IE11

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 10:27:35 am
content: Nothing has changed on the forum or server in recent times that I am aware of (the eevblog.com Wordpress update should not have changed anything)

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 10:32:57 am
content: There was an update to the forum software and I have installed that, does it make any difference?

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 10:36:06 am
content: Oh, hang on, I recall running the SMF Maintenance mode as part of another issue, and perhaps that might have found some missing or badly linked images? Can't recall exactly...

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 10:43:45 am
content: I am running the SMF file attachment maintenance tool now, but it doesn't seem to be running smoothly, pausing at 1% and keeps asking for a manual continue...

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 06, 2015, 10:49:42 am
content: Quote from: EEVblog on October 06, 2015, 10:43:45 amThat is normally a sign of bad news...

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 11:14:20 am
content: Browsing the attachments from oldest one first:No problem viewing anyone of them dating back to 2009

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 06, 2015, 11:23:46 am
content: Quote from: EEVblog on October 06, 2015, 11:14:20 amThe oldest posts are fine, it just starts somewhere.I also hope you noticed that it only fails in IE (11), it works fine in Chrome and Firefox for me.

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 11:29:42 am
content: Quote from: PA0PBZ on October 06, 2015, 11:23:46 amIn that case I'm not the least bit worries then!

author: BravoV
author_rank: Super Contributor
timestamp: October 06, 2015, 11:40:15 am
content: Quote from: PA0PBZ on October 06, 2015, 11:23:46 amAre you saying you can view those attached photos at those examples posts ?

author: rdl
author_rank: Super Contributor
timestamp: October 06, 2015, 11:45:25 am
content: I do not use IE (11) and I was not able to open any of the corrupt "Mechatrommer" attachments linked to in this thread. The "ThunderSqueak" attachments do work correctly.

author: EEVblog
author_rank: Unknown
timestamp: October 06, 2015, 11:58:56 am
content: Perhaps the forum settings/plugins were changed at some point. Those Mechatrommer and Johanon posts are displaying full size images, and not thumbnails as you typically get. So perhaps some old issue with image resizing etc.Mechatrommers first post in that thread that has a small image size works just fine:https://www.eevblog.com/forum/beginners/how-to-better-wire-the-bnc-connector-and-ghz-issue/msg36138/#msg36138So unless this problem is massively widespread and something has genuinely changed recently, then it may not be worth chasing. Might just be case of having stumbled upon some images that were uploaded at a point in time where there was some funny setting happening.

author: BravoV
author_rank: Super Contributor
timestamp: October 06, 2015, 12:07:07 pm
content: Quote from: EEVblog on October 06, 2015, 11:58:56 amNo Dave, the attached image files are corrupted, try download manually the file into your local computer, definitely its a JPG file with all it's signature, but somehow the JPG file structure is corrupted and can't be view with JPG viewer, try it yourself. This applies also PNG file and pictures attached by Jahonen, so its not only Mechatrommer's files that are affected.This is the JPG binary hex view from the 1st example named "a.jpg", you can see at the right a clue on JPG signature, its even has clue info on the camera he used, EOS 40D.

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 06, 2015, 12:17:27 pm
content: Quote from: BravoV on October 06, 2015, 12:07:07 pmI don't know, but when I download the file it can be viewed perfectly and the file looks ok.You have an extra 16 bytes in front?EDIT: And the time is different... wtf?

author: Andy Watson
author_rank: Super Contributor
timestamp: October 06, 2015, 12:18:25 pm
content: Quote from: EEVblog on October 06, 2015, 11:58:56 amI noticed this several months ago but assumed that it was normal forum behaviour - didn't try downloading the links. It's not a recent change.

author: bitslice
author_rank: Frequent Contributor
timestamp: October 06, 2015, 12:56:50 pm
content: Just to slip in a little aside herePeople who use hosters like Picasa picture hosting, and then something happens and their pictures are deleted.That may have been theonlyrecord on the internet of whatever hardware they were talking about and now it may be gone forever...Maybe use something like imgur.com which doesn't have a library system which could get deleted or renamed.(or cross post on a few more forums, not just this one)

author: amyk
author_rank: Super Contributor
timestamp: October 07, 2015, 03:09:46 am
content: Quote from: EEVblog on October 06, 2015, 11:14:20 amTry the ones between March 3 and 16, 2011.As an aside, nowallof the images in this thread don't display, although I can download them and they'll be OK.