<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="cid:filelist.xml@01C28BD4.3EA518D0"> <title>Message</title> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="time"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="date"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/>  <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple style='tab-interval:.5in'> <div class=Section1> Adding to this list as well… <o:p></o:p> <o:p> </o:p> -----Original Message----- From: Roger Ly Sent: <st1:date Month="11" Day="14" Year="2002">Thursday, November 14, 2002</st1:date> <st1:time Hour="10" Minute="27">10:27 AM</st1:time> To: ExtractStream@yahoogroups.com Subject: RE: [ExtractStream] audio syncing problems <o:p> </o:p> Hey Don,<o:p></o:p> <o:p> </o:p> Tried it last night, and it doesn’t seem to be working correctly.<o:p></o:p> <o:p> </o:p> I tried three things:<o:p></o:p> <o:p> </o:p> <ol style='mso-margin-top-alt:0in' start=1 type=1> <li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo3;tab-stops:list .5in'>Using my compressed audio file that I had manually set to be the same length as the video stream.  I also used the frame rate setting you suggested, and it seemed to have the same syncing problems as before.  Frame rate adjusted from 29.97 to 29.71<o:p></o:p></li> <li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo3;tab-stops:list .5in'>Just extracting the audio, doing WinAmp->Wav conversion and then CoolEdit -> 48KHz conversion.  (not compressing the audio length to the exact length of the video stream)  Using that audio stream in VirtualDub using the frame rate setting you suggested.  It’s still off, probably about the same as it was before.  At the beginning its fine.  After 8 minutes, it is about half a second or so off (audio comes before the video).  Frame rate adjusted from 29.97 to 29.73<o:p></o:p></li> <li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo3;tab-stops:list .5in'>Using besweet, lame and ssrc to convert and 48Khz at the same time.  The interesting thing is that it made my audio file a good 100 minutes LONGER than my video.  Using WinAmp and CoolEdit only seemed to make it 20 or 30 seconds longer.  Also, when I tried to set the frame rate setting as you suggested, the audio offset was completely off.  I’m not exactly sure why.  (When I say off, I mean a good 40 or 50 seconds off early on… I assume it got much worse as you watched more and more).  Frame rate adjusted from 29.97 to 23.21!!!!<o:p></o:p></li> </ol> <o:p> </o:p> So they all seem to be off (the first two are pretty similar to my original tests, and the third one was just completely wrong).<o:p></o:p> <o:p> </o:p> Let me verify that I changed the correct setting.  The frame rate match option should decrease my video frame rate a little if I choose that option, correct?  (Assuming, as in my case, the audio is longer than the video).  I was kind of hoping it could drop a couple of audio frames and keep the video at 29.97, but oh well…<o:p></o:p> <o:p> </o:p> Are there any other suggestions?  <o:p></o:p> <o:p> </o:p> Thanks,<o:p></o:p> <o:p> </o:p> Roger<o:p></o:p> <o:p> </o:p> -----Original Message----- From: Don McAllister [mailto:donmc@blueyonder.co.uk] Sent: <st1:date Month="11" Day="13" Year="2002">Wednesday, November 13, 2002</st1:date> <st1:time Hour="14" Minute="58">2:58 PM</st1:time> To: ExtractStream@yahoogroups.com Subject: RE: [ExtractStream] audio syncing problems<o:p></o:p> <o:p> </o:p> <div> Yes, skip it completely. I used to have horrendous sync problems until this option was pointed out to me. Basically you don't have to worry about the lengths, VirtualDub does it automatically for you.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> It's one of those smack on the forehead type moments when it finally works.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> I hope it works OK for you. Let us know how you get on.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> As an aside, I use besweet and lame to convert the audio m2a track. They are command line driven so the following command file does the conversion to wav and 48Khz in one go. I think I downloaded lame separately but just copied it into the besweet directory.:<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> rem Echo off<o:p></o:p> </div> <div> set TivoUtils=d:\Tivoutils set TivoData=d:\TivoData<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> for %%F in (%Tivodata%\*.m2a) do %TivoUtils%\besweet\lame --mp2input -s 32000 --decode "%%F" "%Tivodata%\%%~nF.tmp"<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> for %%F in (%Tivodata%\*.tmp) do %TivoUtils%\besweet\ssrc --rate 48000 --bits 16 --twopass --normalize --dither 1 "%%F" "%Tivodata%\%%~nF.wav"<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> <st1:State><st1:place>del</st1:place></st1:State> /F /Q %Tivodata%\ty\*.tmp<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> This will work on windows 2000\XP, probably not on Windows98.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div>  <o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Don<o:p></o:p> </div> <blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 3.0pt; margin-left:3.4pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'> -----Original Message----- From: Roger Ly [mailto:rly@homestead-inc.com] Sent: <st1:date Month="11" Day="13" Year="2002">13 November 2002</st1:date> <st1:time Hour="22" Minute="28">22:28</st1:time> To: ExtractStream@yahoogroups.com Subject: RE: [ExtractStream] audio syncing problems<o:p></o:p> Hey Don,<o:p></o:p> <o:p> </o:p> Should I skip the step I did at the end where I compressed the audio stream to be the same length as the video stream?  On a four hour audio stream, it took me three hours to compress, and I’d like to avoid that.<o:p></o:p> <o:p> </o:p> Will checking the “Change so video and audio durations match” option work with the two streams at different lengths?<o:p></o:p> <o:p> </o:p> Can’t wait to get home and try this out tonight!<o:p></o:p> <o:p> </o:p> Thanks Don!<o:p></o:p> <o:p> </o:p> Roger<o:p></o:p> <o:p> </o:p> -----Original Message----- From: Don McAllister [mailto:donmc@blueyonder.co.uk] Sent: <st1:date Month="11" Day="13" Year="2002">Wednesday, November 13, 2002</st1:date> <st1:time Hour="14" Minute="25">2:25 PM</st1:time> To: ExtractStream@yahoogroups.com Subject: RE: [ExtractStream] audio syncing problems<o:p></o:p> <o:p> </o:p> <div> Roger, You're nearly there!!<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Once you've loaded the audio and video file in VirtualDub select<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Video=>FrameRate<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Click the radio button "Change so video and audio durations match"<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> You'll now find your audio in perfect sync.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Cheers<o:p></o:p> </div> <div> Don<o:p></o:p> </div> <div>  <o:p></o:p> </div> <blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 3.0pt; margin-left:3.4pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'> -----Original Message----- From: Roger Ly [mailto:rly@homestead-inc.com] Sent: <st1:date Month="11" Day="13" Year="2002">13 November 2002</st1:date> <st1:time Hour="21" Minute="58">21:58</st1:time> To: ExtractStream@yahoogroups.com Subject: [ExtractStream] audio syncing problems<o:p></o:p> Hey all,<o:p></o:p> <o:p> </o:p> I’m sure this question has been beaten to death on this forum, but I can’t seem to get a good answer:<o:p></o:p> <o:p> </o:p> I’ve been cutting and editing video extracted from my Tivo, and can’t get the audio to stay in sync.  The following is an outline of what I’ve been doing.  The end goal is to burn to DVD.<o:p></o:p> <o:p> </o:p> Run TivoApp and extract the ty stream to my Win2K box.<o:p></o:p> Use TyConvert to convert to a multiplexed mpg file.<o:p></o:p> Use DVD2AVI to demultiplex.<o:p></o:p> Used WinAmp to convert the m2a file to a wav file.<o:p></o:p> Used CoolEdit2K to convert the wav file to 48KHz<o:p></o:p> Loaded the .d2v file into VFAPIConv for an avi to be used in VirtualDub<o:p></o:p> Loaded the avi and the wav file into VirtualDub.<o:p></o:p> <o:p> </o:p> Now, when I play the file in VirtualDub, the video/audio starts in sync.  Over time though, the audio and video become out of sync, and the audio starts coming before the video.<o:p></o:p> <o:p> </o:p> A couple of things that I noticed.  After demuxing with DVD2AVI, the audio stream is actually longer than the video stream.   The video stream is 4 hours and 30 minutes and 29 seconds.  The audio stream is <st1:time Hour="16" Minute="30">4:30:49</st1:time> (or something similar).  <o:p></o:p> <o:p> </o:p> I thought this would account for the sync problems, so I used CoolEdit to compress the audio stream to <st1:time Hour="16" Minute="30">4:30:29</st1:time>, but I still get the sync problems.<o:p></o:p> <o:p> </o:p> Am I missing something obvious here?  What’s causing the video and audio to start off in sync, but slowly become out of sync over time?<o:p></o:p> <o:p> </o:p> Does anyone have any better suggestions on how to do this?<o:p></o:p> <o:p> </o:p> I’ve checked Roger M’s Tivo page.  I also based my last efforts on <a href="http://salfter.dyndns.org/tivo2svcd.shtml">http://salfter.dyndns.org/tivo2svcd.shtml</a>.  <o:p></o:p> <o:p> </o:p> TIA,<o:p></o:p> <o:p> </o:p> Roger<o:p></o:p> <o:p> </o:p> <tt>To unsubscribe from this group, send an email to:</tt> <tt>ExtractStream-unsubscribe@yahoogroups.com</tt> <tt>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</a>.</tt> <o:p></o:p> </blockquote> <tt>To unsubscribe from this group, send an email to:</tt> <tt>ExtractStream-unsubscribe@yahoogroups.com</tt> <tt>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</a>.</tt> <o:p></o:p> <o:p> </o:p> <tt>To unsubscribe from this group, send an email to:</tt> <tt>ExtractStream-unsubscribe@yahoogroups.com</tt> <tt>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</a>.</tt> <o:p></o:p> </blockquote> <tt>To unsubscribe from this group, send an email to:</tt> <tt>ExtractStream-unsubscribe@yahoogroups.com</tt> <tt>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</a>.</tt> <o:p></o:p> <tt>To unsubscribe from this group, send an email to:</tt> <tt>ExtractStream-unsubscribe@yahoogroups.com</tt> <tt>Your use of Yahoo! Groups is subject to the <a href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</a>.</tt> <o:p></o:p> </div> </body> </html>