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DVD+R, DVD-R, which is preferred?

Discussion in 'Electronic Design' started by Joerg, Dec 31, 2006.

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  1. Joerg

    Joerg Guest

    Ok, more and more engineers are asking me to supply this or that on DVD.
    So, the new computer that's coming can write these. Went to Costco to
    et a stack of DVD and here was the puzzler: They had both DVD-R and
    DVD+R, same price. I herewith openly confess that I had no clue. We
    don't even have a DVD player at home but I guess that excuse ain't good
    enough.

    The new computer will be able to write both. Which one is the preferred
    format?

    Google resulted in very mixed opinions, mostly that +R has less write
    errors but that -R is more compatible. Much of my material will be
    drawings, ultrasound images and so on. It must run on other computers
    including older models but also on DVD players in conference rooms. My
    hunch is that -R would be better because it seems to be the older
    standard (1997 or so) but I am not sure.
     
  2. Robert

    Robert Guest

    My understanding was R- was slightly preferable but all of the players
    within the last 3-5 years or so had no trouble reading either.

    Robert
     
  3. Guest

    DVD and DVD-R are the early standards, and are well supported, and (as
    you mentioned) DVD-R is slightly more compatible. Except for some
    high-end Macintosh models, DVD-RAM never got anywhere (and should
    probably be avoided), but the other variants all have good read
    support.

    There were write support issues with DVD+R at one time (burner programs
    that didn't support it).
     
  4. There is an especially good article comparing the various DVD formats
    at:

    http://adterrasperaspera.com/blog/2006/10/30/how-to-choose-cddvd-
    archival-media/

    --Gene
     
  5. Bob

    Bob Guest

  6. Guest

    The problems concerning engineering and DVDs
    is not so much formats as wherer the disk is going
    to be used. For conference rooms, schools,
    and home use, you would want maximum compatibility,
    like DVD+RW or DWD+R.
    Put for systems that get a lot of wear and tear,
    like cars, aiirplanes, it's preferrable in most
    cases to use a lower compatibility format like DVD-ROM.
     
  7. If it needs to play on _old_ DVD players use DVD-R.

    DVD+R has many advantages, but needs the so called CDROM bit set for older
    DVD players to be able to play it.
    Soem modern DVD burners (like a 16x NEC 7173A I just installed) are unable
    to set that CDROM bit for single layer DVD without a firmware upgrade.
    This may cause problems.

    So use DVD-R.

    That said I always use DVD+R, let them buy a newer player.
    mm maybe I should order some DVD- anyways, now I use the NEC,
    it is always a disappointment if you give somebody a DVD and it does not play
    in their player.
    And firmware updates... YMMV.
     
  8. Joerg

    Joerg Guest

  9. Joerg

    Joerg Guest

    What sunny day? SCNR...

    After reading the article Gene mentioned it looks like DVD+R is vastly
    superior from a technical point of view. Now the question remains
    whether most DVD players can read that. I guess a lot of them should.

    Firmware updates is what I'd really like to avoid, for me as well as for
    the recipients.
     
  10. IME they can play DVD+R but maybe not DVD-R








    --
     
  11. I have often found that the problem with reading is more to do whether
    the disc was written multi session or left open for further writes. I
    have found that if one writes a disk single session , and close the
    disk, then the discs are readable by fairly old drives regardless of
    whether I used DVD-R or DVD+R. With CD-Rs written as a single session
    and closed using the ISO format, I have found that only very old 8x
    and slower have problems reading the discs.

    Regards
    Anton Erasmus
     
  12. Guest

    Hi every one..
    I dont burn many dvd or cds for that matter... but i do backups of
    stuff everynow and then...
    and for backup i always prefer to burn every thing in duplicate...

    all the photos the videos i shoot and the stuff i download from the
    internet gets written to dvds at one point or the other... and for that
    purpose i always use two dvds for storing the same set of files...

    earlier i used to use CDs and at one point i discovered that the ones
    which were made by a company called PRinco had their datalayer getting
    peeled off... that was a horrific experience...

    at that point of time i googled out the reviews for dvds and cds for
    hours at end and came to a final conclusion :

    1) keep your hard disk defragmented and shut down your computer
    properly everytime.. if there are bad sectors on your hard drive.. then
    your computer might get hiung up while writing a cd/dvd and your cd/dvd
    will get spoilt
    2) even though you dvd writers support 16x writing and the dvd media
    you use is 16x, never write at that speed... i personally dont write at
    speeds above 4x... that ensures that the throughput that your dvd
    drives require are quite less than your computers' limits.. hence
    lesser chance of DVD burn process failing...
    3) dvd/cd writer drives made by LITE -ON seem to be the best of them
    all in terms of price and long life/reliability
    4) always verify the dvd/cd after burning... most dvd/cd buring
    software have an option to verify the written files ...
    5) never use multiple DVD writers while recording multiple copies of
    the same set of files
    6) never do "copy on the fly" .. ie copy a DVD from one drive to
    another direct... always copy the DVD/CD to hard disk first and only
    then copy it to the target drive

    Personally I use only Sony's DVD-R to back up stuff/distribute
    photos/videos to my friends
    and I use Nero with a LITEON DVD-RAM drive


    Anurag
     
  13. Sorry about that.
    If you know hat player 'they have': there is a compatibiliy list,
    now the whole list is no longer on line but a search can be made.
    http://www.dvdplusrw.org/Compatibility.asp?mid=0&sid=2&aid=59

    Happy New Year :)
     
  14. In case of DVD+ it is perfectly OK to stop writing for a while and
    have the computer do other things due to load.
    For example (I am a Linux user) I can record DVB-S digital satellite
    directly to a DVD+R, but the stream comes in only at about 4 Mbits/s,
    so the DVD writer light will go on and off as it waits for data.
    This is the way the TV DVD recorders you can buy work too.
    Well, I have a Philips, it was one of the first, it has burned a half
    thousand or more DVD+, plus some respectable number of CDRs, and is still OK.
    However it can no longer work with anything above 8x it seems, so
    I upgraded.
    Also it was on 24/7 for 6 years ...
    Philips fails 100% with firmware updates, not only are newer ones not there,
    older ones can not be found on the ever changing Philips website.
    Absolutely I always do that.

    Same as above, makes no difference for DVD+ if the hardware is OK.
    Same as above, makes no difference for DVD+ if the hardware is OK.
    Mmm, I wrote much of the software myself for Linux, use
    dvd+rwtools from Chalmers, contributed to Linux dvdauthor (subtitles,
    multiple audio channels), did some other stuff, see my web page:
    http://panteltje.com/panteltje/dvd/index.html
    login with user 'guest' and password 'none'.

    So, for me at least DVD+ works great :)

    I cannot speak for MS windows, I _have_ Nero (it came with a DVD writer).
    The only thing I would now need to write (software) is a labelflash utility
    for my NEC, it seems to be a module in the later Nero versions (supported),
    but this was a bulk writer, and no data available on how labelflash works.

    (labelflash has the laser burn text onto a blue backside of the DVD, it
    is different from that other system 'lightscribe', and looks a bit better,
    disks are _very_ expensive.

    At this moment I use an Epson inkjet to print nice colored layout directly on
    printable DVDs.
    The Epson sucks however, so does their support.
    Next one will no way be Epson.

    The inkjet printed DVDs look absolutely beautiful however, and allow you to be
    as artistic as you like.
    It will set you back $$$ in ink, especially if you use a lot of dark
    or colored background.
    If you want it for production, then you can try this perhaps (have not tried this myself):
    http://www.continuousink.com/proddetail.asp?prod=epson6
     
  15. I have picked up problems with media written at the maximum speed in
    the past. The first time it happened I used the utility software that
    came with my plexor writer to do some investigation. I checked the
    quality of discs written at various speeds. The plextor utility checks
    the number of errors (correctable) per sector or track and plots this
    with a threshold line that indicates where the number of errors are to
    many to correct. When writing at the maximum speed the number of
    errors were already at close to 80 to 90% of this threshold. At 4x
    writing the number of errors were at less than 10% of this threshold.
    The system it was checked on were fast enough to handle the transfer
    rate at 16x, so the writer did not need to stop/start.
    On a slower machine where the writer needed to stop/start, there were
    definitate peaks in the error rate where the disk was stopped/started
    again.
    Hence for important data I never write faster than 4x. For less
    important data I might consider 8x on a fast machine.


    I have found both benq and lite-on drives to be very good. Many other
    brands are actually manufactured by benq or lite-on. Both companies
    seem to fix problems with their firmware and provide very good quality
    burns.

    [Snipped]

    Regards
    Anton Erasmus
     
  16. Yes this happens, I have seen some tests that confirm that.
    If you want to write slower to reduce error rate it is OK I think.
    There are big differences between disks and writers too however.

    If this was DVD+ then there is something wrong.
    I emailed the author of dvd+rwtools years ago about this, as I had errors too,
    but he pointed out I must be imagining :) Later I found out my setup was wrong
    (cannot remember what it was).
    Have a read here:
    http://fy.chalmers.se/~appro/linux/DVD+RW/
    It is Linux specific, but scroll all the way to the bottom, where its says:
    'Unlike DVD-R[W], DVD+R[W] recordings can be suspended at any time without any side effects.'

    It is a very interesting page from the autor of the soft himself.
    And we are all learning :)

    In general I am very satisfied with the optical media, just use good disks.
    I use Verbatim now, have tried many.... Sometimes you get a bad batch,
    had some Ritek last year that sort of get black spots, same problem
    I had with TDK years ago.
    Best look up the media code, and then google if somebody had problems.
    TDK for example changed manufacturer.... just after I recommended these to somebody.
    Buying more expensive disks is worth it, just avoiding the stress of re-trying.
     
  17. Joerg

    Joerg Guest

    Well, after a cold night we were blessed with an absolutely gorgeous day
    this Jan-1. Almost like summer.
    Thanks. However, mostly they won't know what's in the conference room.
    Also, it happens a lot that I get there and they say that there is an
    urgent ad-hoc meeting in the room we were supposed to be in and we move
    to some other place.

    Same to you.
     
  18. It depends if it is increasing or decreasing


    martin
     
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