synchro bug on firefox paid version

[Julien]

Hello, I bought the license. Since then I have encountered a problem on all the videos I download. the download is super fast The sound is perfect but the image is jerky and ultra-accelerated. it's as if a lot of images were missing, it's unwatchable. while the trial version with the qr code the video was perfect the sound and image were in sync what to do ?

[jcv...@gmail.com]

Hi,

It's actually a coincidence, it's not directly due to the license.

When you are not premium, a QR code is added. To add this QR code the video is re encoded. It might be the reason why now it's jerky : re encoding a video generally fix the jerky problem.

Just try to re encode your video and it should work. 

Another possibility is a player issue : sometimes VLC works better than others like QuickTime

jerome

[Wild Willy]

This also sounds like it might be this issue:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/w9993gUmxr4

Do please read that thread, then post back here (using the Reply all button) to say
whether that describes your problem. In either case, it would help to get a proper
problem description from you. Click this:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/BzPLK2YyL-s

You'll probably want to bookmark that for easy reference. Then search for "problem
report" within that thread. That will take you to 2 links. Click them both, read what's
there, then post a proper problem report. I would very much like to investigate this
issue. So let's hear from you again. Click the Reply all button to respond..

Also, I agree with Jérôme that this is extremely unlikely to have anything whatsoever to
do with the license. That would be another topic to search for in that other thread.
Your search string would be "philosophy" within that other thread. That will give you
another link you should click & more reading to do.

[Wild Willy]

We now have a collection of threads, most of them fairly recent, all of them sharing the distressing commonality that the original poster seems to have disappeared & lost interest in the discussion.  Moreover, not a single one of these cases includes a proper problem description.

https://groups.google.com/g/video-downloadhelper-q-and-a/c/xB1XQOFs0zo
https://groups.google.com/g/video-downloadhelper-q-and-a/c/WfQfhriLDNI
https://groups.google.com/g/video-downloadhelper-q-and-a/c/i8bP8DOVN00
https://groups.google.com/g/video-downloadhelper-q-and-a/c/4BaGtP_xbQY

In all of these cases, I have offered this thread as a workaround.  I admit it doesn't fix VDH.  I also have to say that it is unclear whether VDH is the cause of this problem.  But it is a problem I have observed & I have come up with a way to deal with the issue:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/w9993gUmxr4

This thread is new enough that I can't yet judge whether the original poster has lost interest.  Based on the trend, I am not optimistic:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/SSgY9oLoHdw

On the other hand, this user posted what is very close to a proper problem description.  So maybe I should be more optimistic.

Here is the problem description.  Something happens intermittently that causes the video to run at a ridiculously fast rate while the audio plays normally.  I first noticed this a year ago & I have seen this multiple times in the interim.  I get it with Golf Channel livestreamed tournaments.  But I get it maybe once every 10 or 15 rounds of golf.  The intermittency of the problem does make it nearly impossible to nail down.  I just wish one of these posters, I don't care which one, would follow up.  Try my approach.  Does it help?  Did it trigger a better idea you could be cajoled into sharing with us here in public?  This is a problem that I wish could be identified & I would welcome a workaround that is less of a kludge than the one I've been using.  But I've offered the kludge & nobody else has offered anything.  Nobody else has even said whether they can apply my kludge.  Nobody else has said whether they have a better idea.  I'm pretty sure this is not a problem with VDH but I'm not 100% certain.  Since it is intermittent, Michel probably can't replicate it so there isn't any hope a fix to VDH is forthcoming.  The assumption that this is caused by VDH is not entirely supported by the facts.  The fact is that most downloads with VDH DO NOT exhibit this too-fast-video problem.  So blaming VDH is a hard sell.  My suspicion is that there is some field in the control block of the video that indicates the video speed.  I believe this control block is known as the MOOV atom.  My suspicion is that one field in the MOOV atom needs to be repaired.  How did the field get corrupted?  Beats me.  Maybe there was momentary noise on the line.  I though TCP/IP had built-in safeguards to prevent such corruption but I believe it is not foolproof.  It can correct single-bit errors but it might not catch double-bit errors.  Maybe the video was encoded incorrectly by the serving web site.  Maybe this, maybe that.  Maybe maybe maybe.  How do you repair the damage?  Beats me.  I don't know the internal structure of a MOOV atom.  But you'll notice my repeated us of the word, "suspicion."  I'm guessing.  I'm not a guru in these matters.  I'm a guru only in watching golf tournaments.  I'm also a guru in railing against the deplorable state of apparent apathy among the people posting these problems . . . and problems in general in this forum.  All I know is that the video in these cases is not totally corrupted.  If you slow playback down by some factor, you will see a proper video.  The slow down factor is something you can determine only by trial & error.  Sometimes you can play it at 50%, sometimes 25%. sometimes it's some fraction that is probably an irrational number.  Irrational number.  A mathematical term.  If you don't know it, look it up.

Trying all the resolutions -- resolutions, not qualities -- offered by VDH is probably not productive.  For one thing, I see this problem with livestreams.  I don't know the problem has occurred until after the livestream ends.  You can't chase play the livestream while VDH is recording it.  I've tried.  You can't do it.  So you can't know you've got the too-fast-video problem until the recording is complete.  So by the time I might reach the decision of trying the other resolutions, the livestream is no longer available at any resolution, even the one I just recorded.  So that suggestion is a non-starter.  Besides, like I say, the problem usually does NOT occur.

All I can do is post this comment in each of the applicable threads & hope somebody sees it & progresses this discussion.

[Jeremy K]

I am running into the same issue now too. Play it VLC you just get a frozen image with audio, play it with Windows Media Player/Movies & TV/Photos apps and the video plays in fast forward while the audio works fine. Isn't this what VDH is meant to do, make it easy to download videos? These programming language-like solutions are not helpful to normies either.

[Wild Willy]

Refer to my answer to you over here:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/gA0EsdAwrlY