Re: Movie clips to Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg73027] Re: Movie clips to Mathematica
- From: Urijah Kaplan <uak at sas.upenn.edu>
- Date: Tue, 30 Jan 2007 06:28:12 -0500 (EST)
- Organization: University of Pennsylvania
- References: <ephdvc$s4k$1@smc.vnet.net> <epkcq9$bq0$1@smc.vnet.net>
Two other Windows programs you can use are ffdshow (at least the recent
build I have--check the "grab" filter) and TMPGEnc 4.0 XPress
(Format->Sequential Still Pictures) TMPGEnc 4.0 supports WMV and MOV
(ffdshow might also to some extent) and allows you to do batch encodes.
--Urijah
Urijah Kaplan wrote:
> I don't think Mathematica can import video. I suggest you use a program
> like VirtualDub that can save a video clip to image bitmaps. It even has a
> command line version for doing batches (I have not tried that myself). You
> can also write (or use others') scripts and filters for it. It only
> handles AVI and MPG. You can probably use Quicktime or Quicktime Pro to
> either save MOV as image bitmaps or to a format Virtualdub understands,
> and perhaps a Windows Media Encoder program for WMV.
>
> I don't know what you mean by "time frame"--skip a certain fraction and
> save a frame? e.g. skip every third frame in a 30fps clip so you save
> every tenth of a second?
>
> --Urijah Kaplan
>
>
> Robert Pigeon wrote:
>> Greetings,
>> Here is what I want to do:
>>
>> 1) I have video clips (*.avi or *.wmv or *.mov or whatever) that are about 2
>> sec long
>> 2) I need to analyze the video frame by frame (frames could be every 0.1
>> sec)
>> 3) The analysis is segementation to find the area of a portion of the frame.
>> The geometry is the same from frame to frame except that the area I need to
>> calculate shrinks from frame to frame.
>>
>> Questions:
>>
>> 1) can I "Import" a video clip into Mathematica ? (doc says *.gif but I cant
>> find anything else)
>> 2) if so, how can I break the video into frames ?
>> 2) if not possible, do you know of any program that could save a video clip
>> as frames (I would like to specify the time frame) ?
>>
>> Thanks,
>>
>> Robert
>>
>> Robert Pigeon
>> TZ = -5
>>
>>
>