fast forward after download of videos.

[Aniruddh P]

hello i used VDH for downloading my educational videos from website. after video is successfully downloaded there is some problem when video plays. In starting all the video plays in fast forward mode and then audio starts with normal speed and i am not able to see the video part. can anyone please help how to solve this problem. it would be very helpful. thank you waiting for response.

[mjs]

Have a look at the properties on the videos downloaded ,there has to be a pattern like they're all 1080p for example and have a rediculous frame rate. That will tell you there is a problem with the 1080p variant. Try the next variant available offered by vdh and see if that works.

So come back with the results on what works and what doesn't.

--

A vdh user

[Wild Willy]

Do a search using the search key "too fast" in this forum. There have been a number of
reports of this too-fast video problem. I first posted about it a year ago over here:

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

I am still waiting for one of the people reporting this problem to do either (or maybe
both) of these two things:

1. Read that other thread & try the things I describe in there. Then continue the
conversation by posting how you got on with that.

2. Post some URLs of examples of videos that exhibit the behavior. I gather this is not
possible in the present case since you are talking about an educational web site.

For the record, when I encounter this problem, the properties of the file look fine. The
resolution, bit rates, & specifically the frame rate all look normal. There is no hint
that the problem is lurking in the file until I stumble upon it during playback. It is
common for me to play a file for a couple of hours & then all of a sudden oops the people
suddenly start running around like munchkins on speed while the audio continues normally.
I have only ever encountered this on livestreams of golf tournaments from Golf Channel.
Livestreams. That means there's no point in my posting a URL. By the time I know my
file has a problem, the livestream is over & the URL is no longer valid. Also, most of
the livestreams I record from Golf Channel are perfectly fine. The problem appears maybe
once every 15 or 20 rounds of golf. That's one reason I'm so eager to get a URL from
somebody else. I'd like to try downloading something that is NOT a livestream to see if
I can replicate the results that other people are reporting. I live in eternal hope that
one day, this will happen.

It is not really a marker of anything if you see a frame rate in the thousands. Nature
photography routinely uses high frame rates in order to film things like the beating of a
hummingbird's wings. Once the filming is done, the video with the high frame rate can be
played in slow motion & you can actually see the individual beats of the bird's wings,
even count the number of wing flaps per second. If you film it at something ordinary
like 24fps or 30fps or even 60fps, each frame captures only maybe every second or third
or more of the bird's wing flaps, so even in slow motion, even frame by frame, you don't
see what's going on. You need the ultra high frame rate so playback at slow speed
actually shows you something. Same deal for things like a drop of water falling into a
puddle or a bullet hitting a target. So a high frame rate really isn't a reliable
indicator that something is wrong. Only playing the video back & observing the problem
is reliable.

Having said that, it is entirely possible that one of these problem videos might be fine
at a different resolution, assuming the web site offers the video at multiple
resolutions. So trying all the resolutions is certainly an effort worth exerting. But
looking at the video properties may or may not indicate a problem. You just have to play
the downloaded file before you can say there is a problem.