Hd Recordings

[uncle al]

Question:
Sky Q shows disk space taken by shows recorded
Why do 4 x 1 hour episodes recorded in HD have differing disk space used?
Hawaii 50 22.5 gb Sky 1
Elementary 16.4 gb Sky Living
Houdini and Doyle 15.4gb ITV Encore
Murdoch Mysteries 11.5gb Alibi
All are perfectly watchable, although Hawaii 50 is very rich in colours
Does HD vary so as to give different use of disk space?
TIA!

[Old_Geezer]

My pure guess, and I stress pure guess, is that the way the motion and sound is recorded some scenes require less data to describe them than others. So over the course of a programme some will require less data to be stored than another.

I do know one way of storing video would be to assume the next frame is identical to the last and only store the differences. It means the data required to be stored is reduced a lot. If one programme was about the same scene and just two folk talking the resulting file would be relatively small. However if another programme is a pop music one with the scene changing completely every few seconds and lights flashing on and off, the number of differences will be large and a lot of data need storing to capture the programme.

But I could be completely wrong.

[ubasses]

Yes, according to the Using Sky booklet.

[uncle al]

Hi ubasses
Where did you find the using sky booklet info?
Thanks

[ubasses]

http://storage.sky.com/prod/helpcentre/manuals/skyboxes/9958_Sky_Anytimex_Edit_to_HD_STB_Guide_v4x1x.pdf_1375991315.pdf

Hope it helps.