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Kopy-Rite

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Encore adds random static (Popping and Crackling) to audio from AVI files

Jul 22, 2010 2:57 PM

We spend the whole day today trying to debug this problem... any help would be greatly appreciated.

We have a large conversion project where we are capturing VHS videos and converting them to DVD.

For those that require chapters, we are using Encore CS4.

All of the videos were captured the same way, in an AVI format.

We have found that when we load them into an Encore CS4 timeline, we will hear random static sounds -- pops in the audio.

We believe the AVI file is clean. We can watch the video in Windows Media Player, and the audio is fine. We can burn the AVI file to a DVD video using another low-end package (Power Director) and the DVD is fine. The AVI files have been run on other systems, and the audio crackling sound does not present itself.

But when we try to use Encore, some of the files exhibit the crackling sound. (Note that not all of the files have this problem. But those that do exhibit the problems will exhibit them every time.)

We tried loading them into Premier -- same thing.

So, this problem seems to be limited to Adobe tools.

We are running Windows 7 on an Intel i7, ATI Radeon card... a really fast, strong, stable system.

At this point we're not sure what to try...

We have attempted to pre-encode them using Adobe Media Encoder. Same results, regardless of which audio settings we try.

Any suggestions?

Thanks!

==> Mike

389 Views 3 Replies Latest reply: Bill Hunt, Jul 22, 2010 5:57 PM

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1. John T Smith,

Jul 22, 2010 3:24 PM in reply to Kopy-Rite

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>All of the videos were captured the same way, in an AVI format

Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037?tstart=0

What is a CODEC... a Primer http://forums.adobe.com/thread/546811?tstart=0

What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037?tstart=0

If your codec is anything other than DV AVI type 2 with 16bit 48khz sound, it is not suitable for Premiere or Encore

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2. Kopy-Rite,

Jul 22, 2010 3:55 PM in reply to John T Smith

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Well, this gives me something to explore. Thank you.

It looks like it meets the requirements you identified, but I cannot tell the "type 2"

here is a report from MediaInfo:

General
Complete name                    : H:\***4.avi
Format                           : AVI
Format/Info                      : Audio Video Interleave
Format_Commercial_IfAny          : DV
Format profile                   : OpenDML
File size                        : 1.79 GiB
Duration                         : 8mn 52s
Overall bit rate                 : 28.9 Mbps

Video
ID                               : 0
Format                           : DV
Duration                         : 8mn 52s
Bit rate mode                    : Constant
Bit rate                         : 24.4 Mbps
Width                            : 720 pixels
Height                           : 480 pixels
Display aspect ratio             : 4:3
Frame rate mode                  : Constant
Frame rate                       : 29.970 fps
Standard                         : NTSC
Chroma subsampling               : 4:1:1
Bit depth                        : 8 bits
Scan type                        : Interlaced
Bits/(Pixel*Frame)               : 2.357
Stream size                      : 1.78 GiB (100%)

Audio
ID                               : 0-0
Format                           : PCM
Muxing mode                      : DV
Muxing mode, more info           : Muxed in Video #1
Duration                         : 8mn 52s
Bit rate mode                    : Constant
Bit rate                         : 1 536 Kbps
Channel(s)                       : 2 channels
Sampling rate                    : 48.0 KHz
Bit depth                        : 16 bits
Stream size                      : 0.00 Byte (0%)

From gSpot:

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3. Bill Hunt,

Jul 22, 2010 5:57 PM in reply to Kopy-Rite

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It's interesting that the Audio does not show in G-Spot.

DV-AVI Type I files (not what PrPro will Capture, but what Windows Movie Maker will), often have Audio sync issues.

Good luck,

Hunt

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