MPEG-2 to Divx with..... VDub-MPEG2

[toadster123]

THat Dr.Divx thing does look pretty sweet (and it can do captures)..... i might just have to try it out.... but probably not for this video...maybe the next.. unless i have trouble getting my audio right...

[Nitemare]

Load the wav into vdub as audio->WAV audio. Select full processing, then under audio->compression select the MP3 codec and use 44100 and 128k.

Try a small test near the end to check for synch issues. If the audio is out of synch then check the framerate of your video to be sure that it matches the original MPG file. There should be no synch issues.

[DJRumpy]

You can also use the AUDIO | INTERLEAVING menu to set an audio offset, to delay, or preload your audio early, to help correct audio sync issues. You didn't specify what was wrong with your audio, but the option is there if you need it.

If your not sure about your audio's integrity, you can always re-extract it from your source MPEG by deumuxing it. The audio is probably in MP2 format, which is perfectly fine for DivX/XviD as well. You can multiplex it directly into your AVI using NANDub without any conversion. You can also convert it with BeSweet if you like. VirtualDub will only accept WAV input from an external source that is not embedded in an AVI already. If your going to convert it to WAV with something like BeSweet, you might as well finish it there as well, by converting to whatever format you like (MP3, AC3, or whatever).

[toadster123]

Okay i did i little test and got it to encode the video and audio well.

But when i tried to do the whole thing, it stopped at like 16%...and in the log thingy it said "possible livelock."

I'm not really sure what that is, but the video that did get encoded worked fine... but of course that was only 16% of the whole video...

So, is there something im doing wrong? Could it possibly be a confict with some other prog im running (firewall, Norton AV)? Or is it just something with the actual video?

Should i just encode the rest of the video as a separate file, then append them?

Thankyou in advance.

[Nitemare]

If you can do the rest of the video then that will probably be the "easiest" fix. Be warned that the same resolution and bitrate must be present in both halves of the file to append them later.

[DJRumpy]

You may have a problem with the source file.

If your going to do this rigth, I would suggest you get the source file, and drop it into VirtualDub directly (VirtualDub MPEG), and encode. Set the AUDIO to No Audio, since you can add that back in later.

I'm not sure which file your using that caused the lock at 16%. Can you clarify?

[toadster123]

oh yea i was using the pesudo .avi that i created with DVD2AVI....
i guess i could try using Vdub MPEG mod again...(now that i know the problem was probably with mutli-pass)

[toadster123]

okay, so now i have a .avi encoded with divx (no audio) [and this .avi came straight from the original Mpeg-2, using Vdub Mpeg] ... and a .wav file ...

So what should i use to multiplex them? i tried Vdub but i kept getting a "livelock" ---whatever that is....

When i tried using Vdub, i just put the video as direct stream copy, and for the audio i loaded the .wav then selected mp3 128kbps as the compression.... but i just kept getting "live locks"

[DJRumpy]

First, convert your WAV file to a better compression format, like MP3, or AC3, or even MP2. Use BeSweet, or TooLame.

To mux them together, get NANDub. It's about as simple as it gets.
Drop your AVI onto NANDub.
From the audio menu, select the type of audio input (wav,mp2,ac3,mp3,etc).
Set the audio to Direct Stream Copy
Set the video to Direct Stream Copy
Select FILE | SAVE AVI, and make a run to the fridge for a quick snack. 2 minutes later, your DivX is done.

[toadster123]

haha sounds cool, first i gotta grab TooLame or BeSweet first...them im off.

I'll let u know how things go...



WORKS LIKE A CHARM!!!!

used besweet to convert .wav to .mp3, then multiplexed them with NANDub.... everything looks pretty good as far as i can see..


THANK YOU (S) for the help

[DJRumpy]

If you're going to do that, you should also grab the BeSweet GUI, and SSRC. BeSweet, TooLame, Lame, and SSRC will all 'plug' into the BeSweet GUI, making it kind of a one-stop audio converter. I use it all the time. Great tool.

[toadster123]

WAIT WAIT WAIT ....

1 more question..

I just realized that the video is in a resolution of 640x480 (what i captured it in)

But the actualy video is a widescreen version thingy...so i only need it to be like ~ 640x270.... but in Vdub i can only crop the picture if i add a filter and then i have to re-encode it ????
But i dont want to re-encode the whole thing....... so is there any easy way to fix this?????? without having to recompress the whole thing

[DJRumpy]

You use the 'Null Transform' filter in VDub. Pay no attention to the resolution it reports. It does nothing, but it will make the CROP button available.

[toadster123]

Okay thanks , that works... but i was wondering if i can stream the video or something while cropping it..?

Like u can only have a filter when u have it in fast recompress or full processing mode.... and i dont want to re-encode the video....
Or do i have to ?


In other words, i already have the video encoded the way i want it... and i dont wanna loose any quality by re-encoding ... i just want to crop it...

Will re-encoding the movie in divx 850kb/s (same as its in now) make it loose any quality???


Ya know what im saying???

[DJRumpy]

Since DivX uses a lossy compression, any edits you do to this file, including cropping, will cause a loss in quality (assuming your saving it as another DivX file). The drop will be minimal though, since your only cropping. This assumes you keep the bitrate at the same level it was before (you can't improve on the video quality, you can only try to keep the quality level the same). Again, the drop in quality will be minimal to the point where you may not even notice it.