Tales of Television Centre (BBC4, Thursday 17 May, 2012)

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Submitted by panfan on Thu, 2012-05-17 23:42

 

 

Download video.

 

Tags: 
Video
2012
TOTP
Pan's People
Dee Dee Wilde
Ruth Pearson
Babs Lord
Babs Powell

53 comments

Submitted by Scrooge McDuck on Thu, 2012-05-24 22:52
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I tried to write a reply but it was getting much too technical I'm afraid so I scrapped it....

Every type of video file that we are currently using involves compression. There is no popular uncompressed video format. The question is, however, if your programme compresses the already compressed signal again. This will result in a loss of quality, of course.

Smart encoding, as Nero calls it, leaves most of the original (compressed) video "as it is" which means, this is the best quality you can get out of the original material.

So the quality of your output does not depend so much on the file type (mpeg2) but on the way the video is processed. If Roxio does not use smart encoding (or whatever they may call it), the video will be re-encoded completely and thus lose quality, even if the file is bigger than before.

It is discussed controversially though whether you can actually see the difference. It's a similar discussion as whether you hear a difference between a 128 k and a 320 k mp3......

Submitted by pooksahib on Thu, 2012-05-24 22:40
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Thanks Scrooge.  I think I knew that but in a different way...

Panfan - you have mpeg-ts and mpeg-ps, both are types of mpeg2.  Original quality.  Damn, my head's sore.  Time to log off.  Goodnight all.

Submitted by panfan on Thu, 2012-05-24 22:57
panfan's picture

Thanks for the replies guys, it shows I have to learn a lot.  I had no idea about key frames and such!  Or that there were mpeg-ts and mpeg-ps.

I've only used the video editing facility on Roxio for doing routines for here, and will try to look into it in more detail

 

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