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Strange .ASF Format.

Discussion in 'Multimedia' started by abrogard, Dec 20, 2011.

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  1. abrogard

    abrogard Thread Starter

    Apr 21, 2004
    My IP Camera management software produces .ASF files. 3 hours of observation produces a file of about 5Gigabytes.

    I can find no software that allows me to easily scan these files - the best my software offers is to run through the whole thing at an increased speed up to x 16. Not good enough I have many hours of stuff to look through.

    I can find no software to convert them into something else that doesn't screw up the job - typically producing a file that contains only 10 minutes of video from one of these 3 hour files. VirtualDub did that with, producing a 13Gig .AVI covering 10 minutes.
    Magix did that, producing a 1Gig .AVI that covered 10 minutes. Windows Movie Maker did that. Various others did that or somilar. I can find nothing that works.

    Thinking the files may be too big I searched for apps that would cut the files up. I could find no file cutter that wouldn't perform the same as those other apps - taking the file in and then offering me a 10 minute file to start cutting up...

    So these files can't be called 'corrupt' really because the camera management software ('Collect Client' or 'IP Camera Control Centre') can play these files no trouble at all. It just doesn't do it well enough.

    It seems as though it is using some kind of non-standard .ASF format. ASF-AVI-RM-WMV-Repair says there's errors in the header. Some other prog reckoned there was no header.

    I can't find the source of this 'Collect Client' software to query them.

    So does anyone know where I can perhaps troubleshoot these ASF files, determine exactly what their make up is, and distinguish where it might vary from the Standard ? Or know some other software that will either convert them or allow swift accurate scanning?

    here's hoping....

  2. Elvandil


    Aug 1, 2003
    Just because someone chose .asf as a file ending doesn't mean they are in an .asf format that is the same as that used somewhere else. People are pretty much free to use file endings as they like, so completely different file types can have the same endings. There are only so many 3-letter combinations available.

    These ought to tell you about the structure of the files and what codecs are used to create them:

    Tools For Analyzing System and Media Codecs:

    GSpot Information Appliance (video codec identification utility)

    CodecInstaller (System codec and media analyzer and installer)

    InstalledCodec (Shows all codecs, enable/disable)

    VideoInspector (codec and media analysis)

    MediaInfoGUI (Shows format/codecs/properties of audio and video files)

    Sherlock (checks audio and video files, codecs versions, broken codecs, etc.)

    AVIcodec (media analyzer)


    No 10-minute video file should be that large unless it is uncompressed or has a resolution the size of a city block.
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