Forum Replies Created

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  • Eric Pautsch

    July 21, 2009 at 6:07 pm in reply to: How to learn DVD authoring

    Which authoring tool do you plan on using? Every tool has different workflows and terms. From there you could simply do a googgle search to discover tons of online tutorials. Amazon is a good place to get books.

  • Eric Pautsch

    July 20, 2009 at 3:18 am in reply to: Blank DVDs

    Taiyo Yuden are great. So are Verbatim

  • Eric Pautsch

    July 18, 2009 at 1:22 am in reply to: Blu-Ray region free

    There are only 3 regions in BD – A, B, C and these are controlled in the authoring tool How do you plan to author this disc? You might do some research before driving in too deep! You are limited in tools if you plan to distribute widely. Only specialist are involved in Blu Ray authoring for distribution.

  • Nothing on the Mac but there are several PC tools here that will do the job:

    https://www.videohelp.com/tools/sections/blu-ray-to-avi-mkv-mp4

  • Eric Pautsch

    July 2, 2009 at 12:28 am in reply to: Blue Ray Data DVD’s

    Personally, I think Blu Ray is the wrong choice for long term storage. I’d go with Noah’s advice!

  • Eric Pautsch

    June 28, 2009 at 6:44 pm in reply to: Making a PAL DVD

    I didn’t say all….but if this guy sent an NTSC disc to his friend, I’d bet you a steak dinner it would play. I was in London last year – must have seen 50 or so NTSC titles on a store shelf.

  • Eric Pautsch

    June 27, 2009 at 2:11 am in reply to: Making a PAL DVD

    You’re pretty much wasting your time and quality. Give them an NTSC disc and you will be fine. Virtually all PAL player play NTSC discs.

  • Eric Pautsch

    June 25, 2009 at 11:07 pm in reply to: Converting Blu-Ray Disc to DVD

    There are several free tools to do this. A good place to go and look for tutorials is videohelp.com:

    https://www.videohelp.com/guides/how-to-convert-bluray-s-with-hdconverttox-id1122#1122

    but like someone said just convert those transport streams ( .mts ) to mpeg 2

  • Eric Pautsch

    June 21, 2009 at 9:22 pm in reply to: 720p to DVD – Interlaced or Progressive?

    What was the issue and how was it resolved?

    E

  • Eric Pautsch

    June 19, 2009 at 8:01 pm in reply to: 720p to DVD – Interlaced or Progressive?

    Took me forever to find this post….Roger does a fine job explaining it here:

    https://forums.creativecow.net/thread/155/870715#870746

    1) NTSC DVD’s may legally contain 29.97fps mpeg streams.
    2) Compressor supports encoding 29.97fps MPEG files from 24fps source material, using 2:3 pulldown flags.
    3) DVD Studio Pro supports writing 29.97fps DVDs, but not 24fps DVDs, because such cannot not exist.
    4) If I import a 24fps asset into DVD Studio Pro it will show as 29.97 fps in the Asset tab, AND that’s also what will be written in the MPEG-2 file. Quicktime shows 24fps if I open the same mpeg file as what was dropped into DVDSP, because it isn’t connected to an interlaced monitor. Therefore it cannot do anything but ignore all the 12 repeated fields per second (otherwise indicated by the pulldown flags). This means that only 60 – 12 = 48 fields (or 24 frames) per second will be displayed on the computer screen. That’s no problem, because all the encoded pictures will be displayed in a timely manner. There is no need to display at the broadcast frame rate, 29.97, so the pulldown mechanism isn’t useful here.

    You can use “MPEG Streamclip”, drop a file, m2v, VOB et.c., onto it, then hit Command+I, to Show Stream Info. Among other things it will tell you which frame rate is stamped into the picture headers of the MPEG-2 video file.

    If an NTSC video file is playable on a DVD it will tell a frame rate of 29.97 fps. That is regardless whether the source movie was 23.976, 24 or 29.97fps, before encoding it to MPEG-2.

    If MPEG Streamclip says that the encoded video is 23.976 or 24fps it will not be accepted by e.g., DVD SP and cannot be played by a DVD Player either.

    If for example QT player tells you that a movie from a DVD is a 24 fps MPEG-2 movie it is not telling you the truth about the .m2v file, it is just telling you how it will be displayed on your computer (progressive) monitor.

    QT Player doesn’t tell you the correct picture size either, when playing an .m2v file.
    I don’t think you could get it to show the correct picture size, 720×480 (NTSC) or 720×576 (PAL), which are the most common sizes for SD DVD. Instead it may report sizes like 640×480, or something even funnier ones like 720×560 or 720×404, which aren’t even possible to fit into an MPEG-2 file. So, you can be sure that these number do not come from the MPEG file. They are just the window sizes that QT Player chooses to scale to, for display on computer monitors, because unlike NTSC TV monitors they can only display square shaped pixels. A TV monitor never shows square pixels (or Pels, Picture elements). There the height of a Pel is always the same as the height of a scan-line, but the width of a Pel is either narrower or wider than that. For example, when a 720×480 picture is displayed on a picture aspect ratio of 16:9 the Pels become wider than if the same picture size is displayed on a 4:3 TV screen.

    MPEG Streamclip will read the picture sizes from the .m2v file and report them as they are written in the file. You should never expect QT player to do that. I have never seen that happen.

    QT Player is a handy tool, but you cannot trust it for any serious measurements. You should understand that it was never meant to be a true MPEG-2 compliant decoder/player.

    If I wasn’t so tired I would have explained about 2:3 pulldown and why that name is meaningful. Many people, without video knowledge from before the computer age, seem to get this all backwards;-)

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