mp4 to mpeg convert ?

[silent1643]

is there any program out there to convert mp4 to mpeg or avi?
windows or linux, every one i have found you gota pay for it, blows

[Steveway]

Try out mencoder.
It's a command-line app but the manpage is very detailed, so if you read the manpage you'll know the command.

[artships]

Mencoder doesn't recognize an MP4 file (an iTunes video).

[stmiller]

Try the VLC Wizard. File>Wizard

[ixus_123]

mp4 is just a container file, as is avi

the actual video inside these containers could be divx, h264 or any of a number of video codecs. The same goes for the sound file in the container. It could be mp3, aac, ogg etc.

use VLC to view the file, then get info from the menu - from there you can think about converting and for your converting needs mencoder is the way to go.

get it from the mplayer website where you'll also find detailed docs on how to use it

[fjf]

I know this one! I know this one! I know this one!
Just install DeVeDe. Easy to use, will create mpeg files or a DVD ISO file with menus from *.avi files. Works great. In my athlon64 3500 it takes about 6 hours to create a 4.5GB DVD.

[artships]

mp4 is just a container file, as is avi
use VLC to view the file
Fine advice, but taking it results in:

bash > vlc 01.mp4
VLC media player 0.8.6 Janus
[00000300] mp4 private error: drms_init(priv) failed (could not get system key)
[00000307] main decoder error: no suitable decoder module for fourcc `drmi'.
VLC probably does not support this sound or video format.
[00000280] main playlist: stopping playback

Any idea how to get around that?

Oh, and using the wizard...

VLC media player 0.8.6 Janus
[00000300] mp4 private error: drms_init(priv) failed (could not get system key)
[00000307] main decoder error: no suitable decoder module for fourcc `drmi'.
VLC probably does not support this sound or video format.
[00000360] mux_ps private: Open
[00000364] mp4 private error: drms_init(priv) failed (could not get system key)
[00000353] stream_out_transcode private error: cannot find decoder
[00000353] stream_out_transcode private error: cannot create video chain
[00000370] main packetizer error: cannot create packetizer output (drmi)
[00000360] mux_ps private: Close
[00000280] main playlist: nothing to play

Further research makes me think that VLC may work, but only if run on the same computer that downloaded the video. It's a DRM thing.

[LostAndFound]

Hi,

You could also try the program Avidemux. It worked for me in converting a Camera video to mpg from mp4. The mp4 version was cut off (cropped to top right quarter) in any Linux player I used (mplayer VLC, Xine etc) and on a friend's Vista laptop. It did play correctly in Quicktime on a Mac. After trying the mencode command-line options (it would be quicker /more worthwhile spending 7 yrs studying for a Phd in Computing!) and DVeDe etc, I finally opened it in Avidemux and saved it again as mpg, and it both opened and converted the movie correctly and un-cropped. Also worked very fast.

So Avidemux may be a solution!

[arkangel]

What about the other way around

I have an avi I want to packet as mp4

[geoken]

Fine advice, but taking it results in:


Are you trying to work with DRM'd content?

[super breadfish]

A lot of MP4 files use odd AAC variants for audio which won't work with video programs from the standard repos. Compile your own or try Medibuntu.

[duds2008]

irivertor?

[hessiess]

FFMpeg.

[jethro10]

I find AviDemux solves 99% of all my problems like this.

[jelabarre]

Hi,

You could also try the program Avidemux. It worked for me in converting a Camera video to mpg from mp4.

But we need to convert from MP4 to MPEG-PS. Avidemux seems to only work the other way (it certainly didn't like the MP4 files I gave it)

[Sef]

necromancing, so locked.