XPost: alt.comp.os.windows-11   
   From: daniel47@eternal-september.org   
      
   On 28/02/2025 6:00 am, Frank Slootweg wrote:   
   > Paul  wrote:   
   >> On Thu, 2/27/2025 10:31 AM, Frank Slootweg wrote:   
   > [...]   
   >>>    Thanks. So let's hope that File Explorer's Properties "Type of file:"   
   >>> is smarter than I thought it is, and is looking at the *content* of the   
   >>> file, not at the *extension*.   
   >>>   
   >>>    Could you do a (File Explorer) 'Properties' on your 'Nine.mp4' file   
   >>> and report what it says under "Type of file:"? That would tell us one   
   >>> way or the other whether (FE) 'Properties' is smart or dumb.   
   >>>   
   >>> [...]   
   >>>   
   >>   
   >> I tried it. I named my sample file from the Internet   
   >>   
   >>     Nine.mp4   
   >>   
   >> and File Explorer says   
   >>   
   >>     File Type:  MP4   
   >>   
   >> That is because Windows "trusts" the file extension.   
   >>   
   >> If I remove the extension entirely, File Explorer says   
   >>   
   >>     File Type:  file   
   >>   
   >> so it hasn't a clue what it is then. The object-oriented   
   >> launching of an application, based on the file type, in Windows,   
   >> is centered around the declared extension.   
   >>   
   >> *******   
   >>   
   >> However, when I change the extension back to the original (download) value   
   >>   
   >>     Nine.ts   
   >>   
   >> now, suddenly, doing a Properties in File Explorer, gives this   
   >>   
   >>     Video   
   >>   
   >>     Length:            00:01:02         (Sixty two seconds)   
   >>     Frame width:       720   
   >>     Frame height:      576              (Aussie PAL TV)   
   >>     Data rate:         5291 kbps        (Must be on a multiplex, multiple   
   streams on one 6MHz channel)   
   >>     Total bitrate:     5387 kbps   
   >>     Frame rate:        25.00 frames/second   
   >>   
   >>     Audio   
   >>   
   >>     Bit rate:          96 kbps   
   >>     Channels:          2 (stereo)   
   >>     Audio Sample Rate: 48.000 kHz   
   >>   
   >> And that means, Windows applied a TS specific filter, to collect   
   >> that metadata about the video. Such metadata would also show   
   >> up if you used Indexed Search and asked for "width=720"   
   >> and then that item would show up in the list.   
   >>   
   >> When the file extension was MP4, it applied the MP4 filter   
   >> which failed to find anything.   
   >   
   >    Thanks. So File Explorer is smart if a Transport Stream file is named   
   > .ts, but dumb if it's named .mp4.   
   >   
   >    But that still does not explain:   
   >   
   >    
   >>>>>    So I don't understand why Daniel's vid000.mp4 file would say "Type of   
   >>>>> file: TS file (.ts)" in Properties.   
   >    
   >   
   >    Bottom line: We need more details/feedback from Daniel.   
      
   Sorry, Frank, what more information can I provide??   
      
   Just to get back to square ONE, when I finish recording Live T.V. onto   
   the PVR tonight, I'll copy a new file onto the USB Drive.   
   --   
   Daniel70   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)