It appears that you have managed to chop off the end of your file, and 
since MPEG4 files keep their header at the end of the file nothing will 
touch that file.  Sure, much of the data is there, but you would have to 
know a heck of a lot about it and have some very special software in 
order to reconstruct it, but that still wouldn't replace whatever video 
also got chopped off.

One of the utilities that I ran it though said the file should have been 
closer to 152MB instead of 17MB, so you appear to have lost most of the 
data too.

Brian Cluff

On 10/20/2012 10:58 AM, Jim March wrote:
> Folks,
>
> I have a broken .mp4 file on my hands that is critically important to a
> political thing I'm doing.
>
> The file is at:
>
> https://dl.dropbox.com/u/1825088/ScytlBaltimore.mp4
>
> I've tried using a front-end to ffmeg called "format junkie" to fix this
> critter and the error it spits out is "moov atom not found".  This
> apparently means the data might be there, but the video format structure
> does exist.
>
> Some google-fu led me to this page:
>
> http://vcg.isti.cnr.it/~ponchio/untrunc.php
>
> Awesome!  An open-source util that can cope with this.
>
> Problems though...
>
> It needs "libavformat-dev and libavcodec-dev straight from the Ubuntu
> repositories" and the Quantal that I'm running (latest Ubuntu) can't
> load those per Synaptic - not without a lot of dependency hell stuff
> that might break FSM only knows what.
>
> I have a VM copy of Mint 8 that might, but I can't seem to get
> Virtualbox to pass it networking so that I could load those and load the
> build-essentials stuff needed to compile this critter.
>
> Can anybody help by compiling untrunc and then applying it to that data
> file!?  I'd be very, very grateful :(.
>
> Thanks,
>
> Jim
>
>
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