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Posted by teem on 09/22/07 04:16
On Fri, 21 Sep 2007 23:38:42 GMT, "Stuart" <stuart@whodunnit8.com>
wrote:
>
>"Kimba W. Lion" <kimbawlion> wrote in message
>news:4ck7f39pt7is97m1beoqg46quo11kladt5@4ax.com...
>> none@given.now (Joe) wrote:
>>
>>>A lot of programs are being sped up, probably to free up more time for
>>>commercials.
>>>
>>>It looks roughly like a 10% or more speed up.
>>>
>>>This speed up was even on a movie *DVD* that I checked out from the
>>>library.
>>>
>>>What is this process called? I haven't seen or heard anything about it,
>>>except with my own TV viewing.
>>
>> It's called time compression.
>>
>> Some of the movie channels will tell you that they've done it, in a
>> disclaimer at the beginning of the movie. TVLand seems to do it to
>> everything they show.
>>
>> They can get an extra minute of commercials into a half-hour show with
>> just a 4% speedup, the same amount applied to all films for broadcast in
>> PAL countries, and the PAL folks will tell you no one ever notices. Right.
>>
>> There is no reason to do this to a DVD, but I've also seen chopped-up
>> syndicated versions of TV shows make it to DVD, so it depends on the DVD
>> maker and how diligent they are in getting the proper materials.
>
>
>Half right! In PAL countries "shot on film" movies from foreign sources like
>the USA etc are shot at 24 fps and shown at 25 fps on TV (at 24fps in
>cinemas) so yes that's 4% fast. Where you do hear the difference is if an US
>actor is being interviewed live on TV and then a film clip is shown suddenly
>it sounds like he's lost one of his ***** !!
>
>On the other hand all TV produced material in PAL countries is produced at
>25 fps and indeed some but not very much film material is also shot at 25
>fps especially if it is for local TV use - so it's a mixed bag really.
>
>The technology to speed up audio without affecting the pitch has been around
>since the early 1950's. The EMT Pitch and Tempo regulator a tape technology
>does this, these days it's dead easy with a plug-in in Adobe Audition...
>
>The other complication with DVD's is where they are authored. In most PAL
>countries modern TV's and DVD players are multi- standard, ie PAL or NTSC
>and most are easily multi region. So I can play a NTSC DVD on my DVD player
>set my TV on NTSC and play as intended or basically leave it on automatic
>and it all just happens..
>
I 1st noticed this compression a few years ago while watching a
Waltons ep.there was a far shot of someone walking outside in a town &
it looked like he had the ''hiccups'' in the legs.
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