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Bit Rates, Tosh RDXS32 and Formula1

Discussion in 'Blu-ray & DVD Players & Recorders' started by nunew33, Jul 6, 2004.

  1. nunew33

    nunew33
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    I recorded the french GP on Sunday at 4.6 (SP). Play back was fine. Pausing would produce crisp clear image with artifacting on fast scenes where bill boards whizzing by in background. Duration after removing adds and Jim Rossenthal was 2 hrs 21 mins. So rate converted to bitrate 4.0 to fit onto DVD.


    Effect was fairly drastic! Image is still watchable (but seems a softer image) but pausing action is considerably worse where there are fast moviing objects. Image overall is a lot softer. Im guessing the fast sweeping shots are reducing the resolution of the images but im surpised that such a small change in bit rate makes such a big difference in clarity.

    Am I missing something obvious. Is there less rigid way of setting bitrates? I tried auto bitrate for DVD and it set it to 4.0. Is there a way to ensure that the Tosh uses higher bit rates where needed and less in the actionless shots.
     
  2. GoldFish

    GoldFish
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    Nunew33, I seem to remember there was a visual quality setting for the still picture, just cannot remember where, will have a quick look at the manual later. I have also left my edge enhancement on as it gives a better PQ (to me) on large screen.
     
  3. apreading

    apreading
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    I think the problem may be that you have compressed the images twice. Changing from 4.6 to 4.0 is not the same as recording 4.0 in the first place. You have an already degraded image and are decoding and recompressing it again. Changing bitrates will only really be satisfactory if you record at an extremely high quality first time round.

    Best dump this race and hope for a more exciting one this weekend! :zonked:
     
  4. nunew33

    nunew33
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    I hope itll be more exciting as Ive paid £100 to be there!!!!

    Theres a problem there then as you dont know how much youll cut out.

    I suppose Ill have to do 4.o knowing that I can have up to 2:20 on a DVD and edit accordingly
     
  5. apreading

    apreading
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    IF you dont know how long it will be (obviously you dont - who knows if there is a restart etc) then your best bet would be to record in maximum quality (XP or 10.0 or whatever it is on the Tosh) from the broadcast and then re-encode at write time to the appropriate rate. This way you are re-encoding a 'near perfect' recording and degradation should be minimal. Just means it takes up more space on your hard disk till you are ready to dump it...
     
  6. apreading

    apreading
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    Oh, and have fun at the weekend!

    Whereabouts are you sitting? I was at Priory a couple of years back - that or Luffied are my fave spots! :smashin:
     
  7. nunew33

    nunew33
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    Doh, good idea re: max rate! Will try that this weekend.

    Not sure where I'll be, at mercy of my mates. £100 was the cheapest, ie 3rd class no seat!

    nice ticket though!
     
  8. GrahamC

    GrahamC
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    Jesus £100 a pop, that seriously impressive slumming... :cool:
     
  9. nunew33

    nunew33
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    £100 more for a seat!

    What will I get for my money: no commentry, no in race analysis, a view of 100 yards of track rather than full tv coverage, rain, deafening noise.

    Its a bargain!
     

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