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02-04-2011, 05:34 AM   #1
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Thump sound on video

Hi

I just recorded a couple of videos with my K5 and in all of them i hear this regular thump sound when i play it in Youtube. Is there something i am forgetting to do when i record the video?




Thanks!

02-04-2011, 06:30 AM   #2
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I could be wrong but it sounds like static discharge... maybe not the cameras fault but
possibly the train your riding..
d
02-04-2011, 06:43 AM   #3
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QuoteOriginally posted by dermc Quote
I could be wrong but it sounds like static discharge... maybe not the cameras fault but
possibly the train your riding..
d
Was the train electric? The contacts often bounce up and down and spark as they do so. I imagine that could affect electrical equipment close by.

Do videos made off the train have the noise?
02-04-2011, 07:26 AM   #4
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I made videos on and off the train and they sound the same.

02-04-2011, 07:51 AM   #5
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Try a different sd card? That is pretty weird...it's almost like it's recording a full volume spike....or you have bad memory...
02-04-2011, 09:34 AM   #6
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I think the issue is in Youtube, since when i play the videos in my laptop the sound is fine, only when i view the video on the YT website does that thumping noise appears. Anything to do with the file processing?
02-04-2011, 09:54 AM   #7
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I hear a distinct 1Hz crack, or snap through the entire movie.
02-04-2011, 10:21 AM   #8
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03-24-2011, 02:20 AM   #9
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Try a different player. I also get a weird cyclic sound in the background using DIVX-player, but not if I use windows media-player.
03-24-2011, 03:32 AM   #10
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I also think its codec-related. I hear this noise on my bluray-player, who can only play the audio, not the video.
When I encoded it on my coputer, there was no noise.
03-24-2011, 03:36 AM   #11
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I know this may not be helpful, but I never record sound off a DSLR for this exact reason.
03-24-2011, 04:45 AM   #12
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QuoteOriginally posted by Gimbal Quote
Try a different player
You are definitely on to something there.
DragonPlayer does *not* click
VLC does click
Reducing its filesize by re-rendering it with kdenlive also introduced clicks.
What OS/player is OP using?
03-25-2011, 07:05 AM   #13
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I had the problem "solved" by saving the video on a different file format than the one originally recorded in the camera.

If i upload drectly from the camera to Youtube, the thump sound appears, but if i upload the modified file it does not, so i do think it has something to do with the codec.
04-06-2011, 10:23 PM   #14
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I have the same problem with you.
I used k-5 and sony's DV record videos in the same situation. But only video of K-5 has this kind of noise.
04-11-2011, 12:59 PM   #15
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Hi,
I think i've got something interesting about that.
I've got the same problem with my K5, here is a video with the same noise. I've send the original video file directly to youtube. And if i read the file with windows (XP pro 32bits) & VLC, the sound is here.
BUT,
When i watch it with my macbook, no more crack sounds !
So, i try to convert the video thru Quicktime, and now, i have a proper file than i can read on PC without that sound.
I'm sending it on youtube, so you can check by yourself.

Here is the video with the crack noise :

And here, the video converted on a Mac, without any crack sound :
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