Question about Leadtek Winfast PVR 2000 (663001C) Video Capture

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Lag When the file is played back, the video and audio become out of synch. The longer the file the worse it gets, to a point where the word is spoken before you see the mouth move

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  • tiggerandpoo Jan 02, 2009

    when i record the vidio jumps people move like robots

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LESSEN THE SIZE OF THE FILE

Posted on Oct 24, 2007

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Posted on Jan 02, 2017

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Standalone DVD player with DivX why does the VBR encoded Audio lag the Video


DivX or XVid encoded MP4 Video codec or AVI will almost always have either the Dolby Digital AC3 Codec or the MP3 encoded audio codec see the following links; Fraunhofer MP3 Decoder or LAME MP3 Encoder

This fixed audio lag can sometimes be caused by VBR audio encoded files and starts part way through the playback as opposed to CBR audio some standalone DVD players will exhibit sound lag in this case. It is a good idea to re-encode the VBR to CBR audio this usually solves the problem.

I suggest that you convert/encode all your DivX AVI files into CBR audio to avoid any such errors; all commercial DVD Video Audio is encoded in CBR (constant bitrate) which also reduces the audio filesize unless its encoded in LCPM which will give a much larger audio component.

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Check the audio bitrate type open the AVI in GSpot the example below shows an AC3 audio already in CBR so can be left alone and should work fine.

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MANUAL CONVERSION PROCESS

This audio MP3 conversion process it a bit of a long way around I know, but it does work!
  • Open video in VirtualDubMod or VirtualDubMP3 (if there is an index error this can sometimes fix it for you.
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  • Ignore the error warning that the video contains VBR audio.
  • Extract audio as MP3 ("demux" in VirutaldubMod or save as WAV, then rename to MP3 in VirtualdubMP3).
  • Convert audio to WAV with CDex
  • Open original video in VirtualDub,choose "direct stream copy" for video and "WAV audio" with "Full audio processing" with CBR MP3 compression (and interleaving with appropriate delay if out of sync) for audio.
SEMI-AUTOMATED CONVERSION PROCESS

You could also use several other easier methods including AVIDemux which uses VirtualDubMod or scan in the DVD-Video using TMPEnc v4.0 Xpress and applying a time lead OR lag however this does not solve a progressive lag *** but can be used to re-author a fixed audio lag error in milliseconds you can use either Windows Media Player Classic or KVM Player in real-time to find this lag or lead error and then adjust accordingly

If you can't work AVIDemux then AVIrecomp will be your best solution this is a bit more user friendly

NOTE> always keep a Backup copy of the AVI before you make any drastic changes as you could make the file unplayable the above process will only work on FIXED AUDIO LAG AVI files.

Progressive Audio Lag (starts in synch and runs fast or slow throughout the AVI is almost impossible to remove with re-encoding the AVI using the above methods.

*** Feel free to comment if you know of a foolproof way other than performing a full re-encode from the MPG2 or DVD VOB file.

on Feb 08, 2010 | Philips DivX DVD Player

2 Answers

When I go on to a site and click audio the sound is intermittent e.g. a few words then stop and start


You encounter that issue when you have connection problems. This is what we call "buffering". It tries to download the audio first so that you can continuously play it. It is like downloading a file, when the connection is intermittent, the downoad stalls. You need to check the bitrate for the audio you are playing. If it is set to a high rate like 128kbps and you only have minimal bandwidth, provide feedback to the site owner and share with them the issue on the buffering audio.

Nov 23, 2009 | Advent 4211c Notebook

1 Answer

Audio Problems 42" LCD Toshiba


reprogram the tv- auto scan will synch video and audio

Aug 22, 2009 | Televison & Video

2 Answers

Gh world tour mic has terrible lag


Yes, unfortunately, USB ports just aren't fast enough for live vocals. Some stereo setups have longer lag times than others, as well. A couple of ms is very noticeable. Have you tried adjusting the settings on the game? Go to "Options" on the Home Screen and select "Calibrate Lag." Here you can delay either your Audio or your Video in 1 ms increments to try to adjust for lag times. You may find a happy medium after adjusting these settings.

Dec 28, 2008 | Activision Guitar Hero World Tour Guitar...

1 Answer

Terrible Lag, Using Vista


the lagg could be from having to many programs open, so you should try shutting everything down that your not using then see how much faster it will go.

Jul 02, 2008 | GE EasyCam Webcam

2 Answers

I have a philips DVD home theatre system HTS8100. Its fine except that NO dvds play in synch. I have checked them on my normal DVD player & they are fine. The synch button on the remote sometimes fixes...


Synch problems on Philips machines can be caused by the video output setting.

Usually there are 3 options for video output:
  • PAL
  • NTSC
  • AUTO
PAL & NTSC force playback in that setting, regardless of DVD format, and sometimes cause a time delay in the conversion.

Try changing this option to AUTO. IF you have a modern TV, it should allow both PAL & NTSC playback.

May 12, 2008 | Televison & Video

2 Answers

Sidekick 3


Out of synch as they dont work or lag? If they lag shut your phone off and reset it, if you have done that plug it in and see if there is new software to update it with, if not it might actually be an internal issue!

May 09, 2008 | T-Mobile Sidekick® 3 Cellular Phone

5 Answers

Can't play back video on sony walkman nwz-s616F


Hi everyone, I had this problem with the Sony MP3 players I bought for my kids (NWZ-S615F). There's a new (free) video converter from iWisoft (download.cnet.com or easy-video-converter.com) which does the trick. I looked into the others mentioned here and there were some virus/trojan horse concerns but so far this one seems fine. I downloaded the file, then did a virus scan, then ran the application and did another virus scan. I've used it 10-15 times since then and did another virus scan and nothing comes up so looks good. Choose the output file format as the first option under iPod. If it hangs while doing the conversion, try to run the output file before you get frustrated - I've found that most of the time the conversion was completed before it hung and the video plays fine.

Mar 20, 2008 | Sony Walkman NWZ-S616F MP3 Player

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