Articles - > FLV to AVI Conversion Guide

Title:	FLV to AVI Conversion Guide
Description:	A guide that tells you how to convert Flash Video (FLV) files to AVI (DivX/XviD or using the original FLV1/FLV4 video without quality loss)
Author/Publisher:	DVDGuy
Ease of use:	Not Rated
Software Used:	DivX Codec, ffdshow, FLV Extract, VirtualDub, Xvid Codec
Page Viewed:	495651 times

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Kippii: nice post! It works for me...
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Page 2 of 4: Using FLV Extract

Step 1: Using FLV Extract

This step will use FLV Extract to separate out (demultiplex) the video and audio components in the FLV file.

.NET Framework 2.0:

The first thing you need to do before you can run FLV Extract is to download and install Microsoft's .NET Framework version 2.0. It's a fairly large file and installation could take more than half an hour. Once you have it fully installed, you can now go on and download FLV Extract.

Start FLV Extract.

Drag your FLV file into FLV Extract where indicated, and it will extract out the video as an AVI file and the audio is saved to a MP3 file. When the processing is completed, a confirmation dialog will pop up detailing the frame rate of the extracted video.

In the same directory as your original FLV file, there should now now an AVI file and an MP3 file (of the same filename as the original).

You can now close FLV Extract.

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Article Navigation:

Page 1: Introduction
Page 2: Using FLV Extract <--
Page 3: Configuring ffdshow
Page 4: Using VirtualDubMod

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User Comments:

nice post! It works for me :) Only the quality from mine movie (got it from video.google) is 320 by 240. Someone knows how2 give mine movie some better quality?

I don't have the streams menu / stream list option in virtual dub, can anybody help me out? I'm having to convert mp3 to wav in order to get sound on my outputs thus bigger than needed file sizes. Please help me out if can.

I've sorted it myself, turns out I was using a later version (1.6) where this function has been dropped.

hatemailme: The guide uses VirtualDubMod (which has the "Stream" menu), not VirtualDub (which has the "Audio" menu, with similar functionalities).

Nice guide, but the latest version of FLVextract is telling me that my .flv file uses 'Nellymoser' audio which can't be decoded. How do I extract the nellymoser audio from my FLV fle?

Hi there, i followed this to the tee but seem to be having trouble merging two avi files together now because of the audio. VirtualDub says that the sample rate is different and VirtualDubMod says that the audio has different data formats, either way i am stuck, any ideas? Thanks in advance Rob

I use a totally different way That is completely LOSSLESS .Flv conversion to .Avi with Virtual Dub Mod ,By enclosing the .flv into an Avisynth envelope. Then then Virtualdub or Virtualdub Mod will read it as if it was an avi . then you can edit the flv ,then save it to ANY format and there will never be any audio synch problem like the way listed here...its all done with not going into the audio stream or anything ! you can use this method to use a lot of formats into Avi.. like MOV,SWF, and tons more formats..try it ... this is not my specialty but it so easy to use virtual dub for everything ,I had to post this response....for the guy that wants to convert the videos from direct upload from youtube that has the stupid nellymoser audio codec this way will not work for nellymoser...but the way to do that in which i had success is to convert the nellymoser audio to wave , then mux it in with vdub ...thats all....... The End - :) Jayson

I have never used Avisynth, how did you enclose the .flv into an Avisynth envelope?

Works a treat! Thanks very much, has solved a long-standing problem for me :-)