Convert MP4 to Avi/DivX/Xvid

[FireWalker]

Requirements:
Quicktime http://www.apple.com/quicktime
Mpeg4PUI http://mp4ui.sourceforge.net/
TMPGEnc http://www.tmpgenc.net/e_news.html
TMPGEnc Mov Plugin QuickTime Reader http://www.geocities.com/SiliconValley/4942/QTReader.zip
For Win9x Users:
Accessibility Option and Tools(oleacc.dll required for MpegPUI to run)
Note:
If installed and run mp4ui and recieved "Unable to locate Oleacc.dll..." error message, you must install Accessibility Option and Tools. Located in Add/remove programs, windows setup then select accessibility to install.


1. Open mp4ui
,
click New/Open, browse and select the mp4 file.
Mp4 screen will look similar to this


2. Goto Video section and click Track 1


3. Click Export to Extract the video stream only and Save as "filename-video.avi". The Operation window will appear

to process mp4 to video only avi.

Note 2: You can extract the Audio track but its not an AC3 or Wav format. More info can be found about AAC(Advanced Audio Coding) here http://www.aac-audio.com/.

4. When Video finished, open TMPGEnc
,
drag and drop mp4 file within TMPGEnc window
.

5. Goto File, Output to file, select wave file, and click
save to decompress the audio.
.
This will output to wav format.


6. Finally use your favorite program to stuck'em together.

Enjoy

[Selena21]

When I try to open the mp4 file with Mpeg4PUI I'm receiving an error "Exception MPEG-4 internal. Couldn't open file ..................(Invalid atom size).
Any help pls?

[FireWalker]

Sorry Selena21.... I never came across an "Execption MPEG-4 internal" error before. I assume this file is playable on your pc. Also assuming that the original creator of the file didn't miss type the file extension....blah.mkv or blah.org and just renamed to mp4. Mpeg4PUI hasn't updated since i posted this article. If playable thru windows media player(classic version mplayer2) what are the codec properties?

[kschang]

Uh, FireWalker... One note: Media Player Classic (MPC) is unrelated to Windows Media Player. Two completely separate products.

[FireWalker]

Only one product mentioned here kschang.
Hint: mplayer2 - What you didn't get that memo?

[kschang]

Only one product mentioned here kschang.
Hint: mplayer2 - What you didn't get that memo?

Nope, the line

windows media player(classic version

threw me for a loop, but that's okay. I'll live.

[stavr0]

Another method, which does not alter the video stream:

Requirements:
VirtualDub
AVISynth
YAMB
CoreAAC DirectShow Codec

Step 1 - Splitting the streams
Open the MP4 using YAMB then extract the desired streams:

1.1-The 'vide' stream as an AVI (#1)

[x] Extract Visual Track ID [ 1 ] to an AVI file.

1.2-The wanted 'soun' stream as a raw AAC (in this case the only one is #2)

[x] Extract Track ID [ 2 ] in RAW Format.

Step 2 - Creating the WAV source
Create an AVISynth script that merges the split AAC and AVI streams (note that FAAD could also be used to create the WAV):
merge.avs

v=AVISource("1x21-Xmas Special(iPod)_track1.avi")
a=DirectShowSource("1x21-Xmas Special(iPod)_track2.aac")
AudioDub(v,a)

Open 'merge.avs' in VirtualDub then save the raw WAV


Step 3 - Create a proper v+a AVI
Open the video-only AVI file from Step 1.1. Do not use the AVS from step 2, it is a decompressed framebuffer that would have to be recompressed, which is what we are trying to avoid.
Set Video Processing to 'Direct Stream Copy'


Select WAV audio from Step 2 and set Audio Processing to 'Full Processing Mode'


Set Audio Compression to MP3 (I prefer CBR)


Save as AVI

DONE!

[Trident5]

i covered this with a complete guide some time ago but heres the link hope it helps, it gives a full step buy step...

https://forum.videohelp.com/viewtopic.php?t=276352&start=0&postdays=0&postorder=asc&highlight=