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  1. Member
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    ok...here's my issue...I've been through this before and in the end i just decided to chuck it all and forget it but not now......i have 2 files i want to append in virtual dub and i keep getting the same error messages....like below...



    i then proceeded to just save the audio as wav....both files seperatly...worked w/o a hitch but i cant join these to back together cause of 2 end results...one in the pic below..



    and the other end result ends up being a 48gb file(these 2 files are xvid)...just if i join the 2 files together.....this is frustrating...im pretty sure this question has been posted before....if someone can direct me to a link or give me a general idea about the audio and if these files can be saved as is and not 48gb etc...I've never had any luck w/ divx/xvid encoded files...ever....w/ other file formats it has worked w/o issue....all i want to do is convert these over to a dvd format which i can do w/ other apps...but i cant get to that point...cause of these issues

    any assistance would be appreciated

    thank you

    moontrash
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  2. Member steveryan's Avatar
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    The 48gb file is probably because you saved as uncompressed AVI, when joining the files hit the video tab and select "direct stream copy". The audio just needs to be re-sampled, still using Virtualdub load each AVI seperately, hit the audio tab and select "full processing mode", then hit CTRL+N and select 48000Hz, hit the file tab and select "save WAV". You can join the WAV files at this point (not sure what to use here) when you have joined them load the WAV into ffmpeggui and convert to ac3, use this at the authoring stage.
    He's a liar and a murderer, and I say that with all due respect.
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  3. Mod Neophyte redwudz's Avatar
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    MP3 VBR causes a lot of problems when you try to encode to MPEG. I assume you saved out the audio with full processing in VD? If not, you may have problems.

    If you did use full processing, you will have to change the audio sampling rate in the files to match. You could add them back in VD and re-encode them to MP3 CBR or use a freeware audio editor like audacity to convert the sampling rate. It will accept WAV audio directly and output the new file. I would use 48K for a sampling rate, as that is the DVD standard anyway.

    From there it depends on what software you plan to encode with. If the program will allow elemental streams like TMPGEnc encoder, you just select the video and the audio and encode. If you use a program like ConvertXToDVD, it only allows muxed audio and video.

    And unless you are lucky, by joining the 2 parts before encoding, you may end up having audio sync issues. It's better to encode the two parts separately and let your authoring program 'join' them.

    Personally, with the quality of Xvids I've seen on the net, I would just use ConvertXToDVD for everything and it should work fine. Even with VBR audio. Some VBR it chokes on, but most of it will be accepted, especially if the sample rates are the same.

    And if you ended up with a 48GB file, you must have used full processing with the video and not set a codec to use. VD will default to uncompressed RGB, which will be huge. If you were just joining, you can use 'Direct stream copy' and it won't encode the video.
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    thanx for the prompt replies....im frazzled messin w/ this....first.....i havent ever had to join 2 wav's together so if u could recommend an app that would do so that would be great

    basically heres the process....i opened the 1st file in VD then it gave me the error u see.....but i continued....it saved the wav w/ no issue...i loaded the 2nd file and it wouldnt append cause of the 2nd pic u see...so i loaded it seperatly and it saved thee wav w/o issue also...i tried the appending w/o "no audio" and thats where the file was gonna be 48gb...i am right now gonna try what was recoomended and i will return.....*fingers crossed*

    thanx

    moontrash
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    heres what i just did....id opened VD and loaded file1/direct stream copy(processing..i cant rmember the name)./no audio and saved it...i did the same w/ file 2....it worked...i loaded file 1 into VD and appended file 2 and it worked....no issues....now...i have these 2 seperate wav files.....all i need is an app to join them and im on my way...what is the best to use?

    man that was easy and fast....thanx

    moontrash
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  6. Mod Neophyte redwudz's Avatar
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    Try Audacity. It works just like a word processor. You can add the second audio after the first. It should show up on a new track. Select the second one, click 'cut'. Move up to the end of the first one, click there and 'paste' it.

    Then set the sample rate and save out as a WAV or a MP3 CBR. Watch for overlapping audio or noise at the end and beginnings of the files. You can play them back with Audacity to test, or filter or adjust volume if needed. Then mux them back with the joined video. I leave VD open with the video still in it while working with the audio, saves time. Or you can output as WAV and encode it to AC3 with ffmpeggui and use that for your audio format when authoring.
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    i tried audacity and got a 771 mb wav file....the second wav ended up being the beginning point and about 30 minutes was clip't off.....i'll now try the instructions uve just recommended and see what goes of it...whew this is time consuming

    thank u...

    ill be back.....

    moontrash
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    well....i followed the audacity instructions posted...it worked like a charm...i now have a 1.5 gb wav file....the movie file is only 1.2 gb.......i took the wav and ran it through ffmpeggui and converted it to an 192kbps ac3 file....i listened to the transistion part of the wav file and where they met it was flawless...no hiss or hiccups of any kind...tomorrow i will run the avi and the wav file through canopus...then ill have a go at trying the m2v file w/ the m2a and w/ the ac3 and see if the sound syncs up w/ the video...if it doesnt...the m2 a file will work just fine...

    will report in the morn..

    thanx...

    moontrash
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    well this file is encoding...will take another 5 hours in canopus....man this is the longest its ever taken

    moontrash
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    it didnt work...the audio is way out of sync....i tried both audio files the converted wav i did in canopus and the ac3 i made w/ ffmpeggui...same result...well at least i know how to at least solve these xvid issues w/ virtul dub...

    moontrash
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    Originally Posted by Moontrash
    it didnt work...
    I'm not surprised. I think you should of followed the instructions you got from redwudz and used ConvertXToDVD. If you had you would probably already be done. Taking an untested video to an encoder and waiting 5 hours to see if it works or not is not something you or me would recommend anyone to do. Always test first then encode when you are satified its going to work, not before. That means - always multiplex the new audio with the existing video (in this case one of your xvid files) and test it.

    I think the best would be, since these files are using VBR audio, to convert the audio to AC3 using either VirtualDub and the newest version of AC3 ACM Decompressor, or ffmpeggui (all freeware programs). Then multiplex the new AC3 with its video stream using either AVIMux GUI or VirtualDubMod (both freeware), then check for audio sync problems. If all is well with both files then run them through your encoder separately. Join the two files in your authoring program. (this was also recommended by redwudz and is good advice).

    Good luck.
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    since i have 2 files that wont append how am i suppose to demux then join the audio? Do i use VD to demux each file seperately and use audacity to join them or is there another option? the convertxdvd is not a problem...i understand that part but its the audio i have issues w/

    i will try and see what comes of it

    moontrash
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    ok...here's what i found out...it didnt work but not becasue of AVIMuxGui....i noticed something strange....i demuxed the audio fron the first disc w/ Vd and used ffmpeg to ac3 it then aviMuxgui to connect and a strange occurance...im missing 1:07 seconds of the end audio on the first audio track..basically....the audio on the first disc is 1 hour 9 Minutes 39 seconds...after i demux it in VD..its now 1 hour 8 minutes and 32..there is my issue...what is happening?

    man im confused...

    btw...this was a faster method

    nomoons11
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    well i finally did it....i looked for another app to demux the audio...i found one called AviDemux 2.3 preview...worked like a charm

    thanx everyone for all yalls help

    moontrash
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    Glad you got it figured out.

    I would like to try and explain a few things. ok

    redwudz said, "I assume you saved out the audio with full processing in VD? If not, you may have problems." I also said to convert the VBR audio in VD to ac3 or use ffmpeggui. What this means is to let VD convert that potentially problematic VBR audio so to save you a lot of trouble later. Thats what full processing means. You have the choice to either convert it right there in VirtualDub or save it out as a PCM wav file then use an outside program like ffmpeggui. Either way, VirtualDub works out the potential problems you might have with the VBR audio by full processing the audio files. I can't guarantee that it will always work, but it has worked before. ok

    It's also a good idea to let VD 'direct stream copy' those Xvid video files out along with the full processed audio. This can repair some problems you may encounter down the way. When VD is finished with the files they should be ready for your encoder to convert to MPEG2. The audio would be full processed and converted and the video would of been direct stream copied. No need to multiplex.

    In my openion trying to append those avi files was a bad idea. Like said in replies above, it is a far better suggestion to combine them in your authorizing program. You simply add the 1st file, set the in and out points if necessary, then add the 2nd file behind it. The authorizing program should create a seamless splice. Also, it is much faster and easier on you. Appending avi files that appears to have problems, like these 2 did, can be a nightmare as you have just found out.

    Good luck.
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    the app i used that figured the main problem out was called AviDemux 2.3 Preview...when i load the avi into it..it immediately saw that there were sync issues w/ the audio...asked if i would like to fix etc....after that it was a breeze....i do have a slight tick where the 2 audios meet in the avi though...but i expected that....it's very faint but certainly not an issue

    used convertxdvd and it was a snap....made it easy

    moontrash
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