auto-split video based on scene detection?

[Mad Scientist Jr]

Are there any utilities (commercial or otherwise) that will auto-detect
scene changes and split the video into separate files for each scene?
Preferably this would be done without re-encoding the video. I need
this for ASF (an MPEG4 variant) or DV-AVI files. Any help appreciated,
thanks.



From: Frank - view profile
Date: Wed, Nov 1 2006 9:32 pm
Email: Frank >
Groups: rec.video.desktop, alt.multimedia.mpeg,
microsoft.public.windowsxp.video
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On 1 Nov 2006 15:19:07 -0800, in 'rec.video.desktop',
in article <Re: best utility to split / truncate video files without
re-encoding?>,
"Mad Scientist Jr" > wrote:

- Hide quoted text -
- Show quoted text -
>Thanks... I tried a few, and they don't seem to work. Do these have to
>specifically work with the codec for my video? (the codec is installed
>on my machine)

>Ken Maltby wrote:
>> "Ken Maltby" > wrote in message
>> ...

>> > "Mad Scientist Jr" > wrote in message
>> > ps.com...
>> >>I have a bunch of .ASF files (MPEG4 variant made with Aiptek video
>> >> camera) that I want to truncate to cut out unwanted footage at the end.
>> >> Are there any good (preferably free) utilities to simply chop off the
>> >> unwanted parts without re-encoding?

>> > Look at www.videohelp.com
>> http://www.videohelp.com/tools?s=108#108

If the files that you have are genuine, valid, .asf files (they play
back correctly in Microsoft's Windows Media Player program, right?),
then what you should do is to download and install the Windows Media
Encoder package from the Microsoft Web site.

http://www.microsoft.com/windows/windowsmedia/download/AllDownloads.aspx

After installation, you'll find that one of the new programs that
you'll have on your system is called Windows Media File Editor
(wmeditor.exe). With this program you can trim the beginning and/or
ending of .asf, .wma, and .wmv files without re-encoding. Do note,
however, that cuts can only be made on key frames. You can also use
this program to add metadata to files.

Along with the Windows Media File Editor program, a small .chm
(Microsoft Compiled HTML Help) file called wmeditor.chm will also be
installed. Read this help file for simple instructions on how to
perform the trimming operation.

Good luck!

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

[Jukka Aho]

Mad Scientist Jr wrote:

> Are there any utilities (commercial or otherwise) that will
> auto-detect scene changes and split the video into separate
> files for each scene? Preferably this would be done without
> re-encoding the video. I need this for ASF (an MPEG4 variant)
> or DV-AVI files. Any help appreciated, thanks.

Scenalyzer might have something like that, at least for DV AVI files.
I'm not sure if it can process files that have already been captured
with some other program, though.

<http://www.scenalyzer.com/>

--
znark

[Netmask]

"Mad Scientist Jr" > wrote in message
ups.com...
> Are there any utilities (commercial or otherwise) that will auto-detect
> scene changes and split the video into separate files for each scene?
> Preferably this would be done without re-encoding the video. I need
> this for ASF (an MPEG4 variant) or DV-AVI files. Any help appreciated,
> thanks.
>
>
>
> From: Frank - view profile
> Date: Wed, Nov 1 2006 9:32 pm
> Email: Frank >
> Groups: rec.video.desktop, alt.multimedia.mpeg,
> microsoft.public.windowsxp.video
> Not yet rated
> Rating:
> show options
> Reply | Reply to Author | Forward | Print | Individual Message | Show
> original | Report Abuse | Find messages by this author
>
> On 1 Nov 2006 15:19:07 -0800, in 'rec.video.desktop',
> in article <Re: best utility to split / truncate video files without
> re-encoding?>,
> "Mad Scientist Jr" > wrote:
>
> - Hide quoted text -
> - Show quoted text -
>>Thanks... I tried a few, and they don't seem to work. Do these have to
>>specifically work with the codec for my video? (the codec is installed
>>on my machine)
>
>>Ken Maltby wrote:
>>> "Ken Maltby" > wrote in message
>>> ...
>
>>> > "Mad Scientist Jr" > wrote in message
>>> > ps.com...
>>> >>I have a bunch of .ASF files (MPEG4 variant made with Aiptek video
>>> >> camera) that I want to truncate to cut out unwanted footage at the
>>> >> end.
>>> >> Are there any good (preferably free) utilities to simply chop off the
>>> >> unwanted parts without re-encoding?
>
>>> > Look at www.videohelp.com
>>> http://www.videohelp.com/tools?s=108#108
>
> If the files that you have are genuine, valid, .asf files (they play
> back correctly in Microsoft's Windows Media Player program, right?),
> then what you should do is to download and install the Windows Media
> Encoder package from the Microsoft Web site.
>
> http://www.microsoft.com/windows/windowsmedia/download/AllDownloads.aspx
>
> After installation, you'll find that one of the new programs that
> you'll have on your system is called Windows Media File Editor
> (wmeditor.exe). With this program you can trim the beginning and/or
> ending of .asf, .wma, and .wmv files without re-encoding. Do note,
> however, that cuts can only be made on key frames. You can also use
> this program to add metadata to files.
>
> Along with the Windows Media File Editor program, a small .chm
> (Microsoft Compiled HTML Help) file called wmeditor.chm will also be
> installed. Read this help file for simple instructions on how to
> perform the trimming operation.
>
> Good luck!
>
> --
> Frank, Independent Consultant, New York, NY
> [Please remove 'nojunkmail.' from address to reply via e-mail.]
> Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/
>

Both Womble and VideRedo do something like this with their 'blank fades' and
Ad Detective for VideRedo.
In the case of Womble it scans he files and when it finds a fade to black it
pops that segment into a window. So at the end of the process you have maybe
20 or more thumbnails. Of course these are just an edit list so you would
then have to drag each one separately to the timeline and export out - no
re-encoding takes place so it is quite quick. Not sure what the VideRedo
arrangement is. Womble will do frame exact cuts on mpeg and avi files
although it is a little slow on avi's (which I mean to be DivX or Xvid).

[blahblah_nospam@sbcglobal.net]

"Netmask" > wrote in message ...
>
> "Mad Scientist Jr" > wrote in message
> ups.com...
> > Are there any utilities (commercial or otherwise) that will auto-detect
> > scene changes and split the video into separate files for each scene?
> > Preferably this would be done without re-encoding the video. I need
> > this for ASF (an MPEG4 variant) or DV-AVI files. Any help appreciated,
> > thanks.
> >
> Both Womble and VideRedo do something like this with their 'blank fades' and
> Ad Detective for VideRedo.
> In the case of Womble it scans he files and when it finds a fade to black it
> pops that segment into a window. So at the end of the process you have maybe
> 20 or more thumbnails. Of course these are just an edit list so you would
> then have to drag each one separately to the timeline and export out - no
> re-encoding takes place so it is quite quick. Not sure what the VideRedo
> arrangement is. Womble will do frame exact cuts on mpeg and avi files
> although it is a little slow on avi's (which I mean to be DivX or Xvid).

That's probably the weakest element in Videoredo. It's "ad detective"
is pretty much braindead. Most people find it much faster to make
cut points manually, rather than sift through and rejoin all the errant
cuts it makes using its detective.