Problem with AVI audio sync after put onto DVD+R

[wwervd316]

I have some avi files that I am transfering to work in my DVD player. The problem is after I put the files on DVD and watch them the voice will go out of sync with the video. When I play the file on my computer (in windows media player) there is no audio problems to be found. I wanted to know if their was anything that I could do to get around this problem. Also would this problem have anything to do with the fact that they are XViD AVI files.

- To burn the DVD I am using NERO 7 Ultra Edition
- The AVI files are 350mb and
- I normally put four files to one DVD+R

Thanks in advance for any help

[redwudz]

Two things come to mind. Drop the Xvids into the latest version of Gspot (2.52 or better) and look for MP3 VBR audio. That can cause lots of problems with conversion to MPEG. You can use VirtualDub Mod or similar to save out the audio as a WAV file, then use that for conversion. You can also convert the WAV to AC3 with ffmpeggui and use that during authoring for the audio.

If you are combining the separate AVIs before encoding, that can also cause sync problems. I would encode the AVIs separately and use your authoring program to assemble them to the final DVD video.

And welcome to our forums.

[wwervd316]

Thanks I'll try that and let you know what happenes.

[wwervd316]

I downloaded GSpot and VirtualDubmMod. When I put the AVI into GSpot I recieved this info

Name: 0x0055(MP3) ID'd as MPEG-1 Layer 3
Bitrate: 130 kb/s (65/ch, stereo) VBR LAME3.96

Therefore it is like you said an MP3 VBR now when I open the AVI in VirtualDubMod 1.5.10.2 it tells me


VituralDub has detected inproper VBR audio encoding in the source AVI (audio stream 1). The current preference is to rewrite the audio header with standered CBR values during processing for better compatability. This may introduce up to 10564 ms of skew from the video stream. If this is unacceptable, decompress the *entire* audio stream to an uncompressed WAV file and recompress with a constant bitrate encoder (bitrate: 129.7 + 18.2kbps) do you still want to re write the header

When I select yes nothing happens and the same for when I say no. Can you please help me if you know what to do. am I supposed to do something?

[Jim44]

Once in VDubMod, go to the "Streams" list, right click on the audio stream and select "Full Processing Mode" then save it as a WAV file. Then use that wav as your audio source for the encoding step (I use TMPGEnc Plus).

Been working for me so far since I learned it here from others.

Just passing it on

Jim

[wwervd316]

So let me get this straight this will save the audio from the AVI seperatly as a WAV file and then what, will the other program that you gave me put the video and audio together so I can transcode to mpeg without having audio sync problems?

[redwudz]

If you use a authoring program like TMPGEnc DVD Author, it will accept the separate audio and video files. I usually run ffmpeggui and encode the WAV to AC3, then put that into TDA during authoring to save space. WAV files are large. Alternately, you can use the WAV and select it in VD and convert it to MP3 CBR if you are going to output to Xvid or AVI format. No matter what, MP3 VBR is not good for encoding to MPEG. TMPGEnc and other encoders tend to choke on it. I would rather save it out as a WAV and encode the AVI to MPEG separately, then combine them during authoring. You should have no problems with sync unless the MP3 or the video is corrupted in the first place. I do this all the time and it works well for me.

[Abond]

In general your problem called Nero 7 Ultra edition

[wwervd316]

I dont think Nero is the problem i've transcoded AVI's before with MP3 VBR audio and they have come out fine after put onto DVD. This AVI works fine in Windows Media Player but when played in the media player from the Nero 7 program it seems to have a problem. At the point in the AVI when the audio goes out of sync the picture has these pixelated squares appear on the screen for a split second. After this the audio is off for the entire episode. Why would it work fine in Windows Media Player and be messed up in another? also does anyone know what causes this problem to occur in the Nero media player?

[ZippyP.]

At the point in the AVI when the audio goes out of sync the picture has these pixelated squares appear on the screen for a split second.

This indicates bad frames in the video which allow you to play it OK but you cannot encode with them in the file. Cut them out or find a new file without errors.

BTW, Nero is a problem. It's a crappy mpeg encoder.

[wwervd316]

What is the name of the mpeg encoder that is better then Nero? Is it faster?

[redwudz]

Encoder list from 'Tools': https://www.videohelp.com/tools?s=40#40

For popularity and ease of use: TMPGEnc
Freeware: QuEnc
Faster encoders: CCE, Procoder

There are others that are popular and each has it's features and flaws. Nero is fine as a burning program, it just has problems with encoding. All in one programs like Nero are fine for some files, but any variations in the file and they have problems. My favorite all in one is ConvertXToDVD, it handles most conversions, but it also has limitations.

Video conversion was a learning process with most of us. The main thing to learn is to use the right tool for the Job. That's why there are so many listings in 'Tools'.