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  1. Member
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    Please Help !

    I have recently demuxed an mpeg file and it outputs the mp4 , mpeg and a sound file. When I author a disk which files should I use? Is it possibly to demux a vobfile right from a dvd? The output looks the same as the input suppose I want to rip that and put the resultant files in mp4 format would I have to demux those files to in order to author them? Which files do I use to author (mp4,mpeg) to author?

    I am so confused. Thankyou John
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  2. Member hech54's Avatar
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    Originally Posted by RBCC View Post
    I am so confused.
    Learn what demuxing REALLY means, or learn what "ripping" really means and come back to ask something that makes at least a tiny bit of sense.
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    A DVD ripper is a software program that facilitates copying the content of a DVD to a hard disk drive. They are mainly used to transfer video on DVDs to different formats, to edit or back up DVD content, and to convert DVD video for playback on media players and mobile devices. Some DVD rippers include additional features such as Blu-ray support, DVD and Blu-ray Disc decryption, copy protection removal and the ability to make discs unrestricted and region-free. While most DVD rippers only convert video to highly compressed MP4 video files, there are other rippers that can convert DVDs to higher quality compressed video. These types of DVD rippers are used by the Television and Film industry to create broadcast quality video from DVD. Video ripped by these professional DVD rippers is an exact duplicate of the original DVD video.

    Ok so then it must be conversion, to take something off a DVD and put it into mp4 format but I guess you can use any format file to make your DVD with menus and such.

    Thank you, John
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  4. Member
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    Originally Posted by RBCC View Post
    Ok so then it must be conversion, to take something off a DVD and put it into mp4 format
    Yes. After a DVD is decrypted and copied, none of resulting files are .mp4 files. Creating an .mp4 file from them requires conversion.

    Originally Posted by RBCC View Post
    but I guess you can use any format file to make your DVD with menus and such.
    DVD has very specific requirements for audio, resolution and encoding, so some media files will need to be converted to be compliant with the DVD specification. Making a DVD that can be played by a normal DVD player with menus and such also requires an additional step, authoring.
    Last edited by usually_quiet; 29th May 2013 at 06:25. Reason: fixed typos
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  5. Mod Neophyte redwudz's Avatar
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    RBCC, in the future please use a more descriptive subject title in your posts to allow others to search for similar topics. I will change yours this time. From our rules:
    Try to choose a subject that describes your topic.
    Please do not use topic subjects like Help me!!! or Problems.
    Thanks,
    Moderator redwudz
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  6. Member
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    Originally Posted by RBCC View Post
    A DVD ripper is a software program that facilitates copying the content of a DVD to a hard disk drive. They are mainly used to transfer video on DVDs to different formats, to edit or back up DVD content, and to convert DVD video for playback on media players and mobile devices. Some DVD rippers include additional features such as Blu-ray support, DVD and Blu-ray Disc decryption, copy protection removal and the ability to make discs unrestricted and region-free. While most DVD rippers only convert video to highly compressed MP4 video files, there are other rippers that can convert DVDs to higher quality compressed video. These types of DVD rippers are used by the Television and Film industry to create broadcast quality video from DVD. Video ripped by these professional DVD rippers is an exact duplicate of the original DVD video.
    I don't know where you copied and pasted that from but you need to start looking at better sources. That's the problem with learning things on the web. There's so much bad information that it's only really useful if you already know something about the topic.

    Ripping is just removing the encryption from a disk and copying the files straight to your HDd.

    Re encoding that to another codec/format like mp4 (which isn't even a codec, it can contain several video formats) is something different.

    I've been known to use the word 'rip' to mean both processes but I know the difference.

    Look at the guides section on this site. Find some good all software that doesn't require you be a video geek to use it. And please don't talk about muxing anymore until you've learned what it means.
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  7. Member Cornucopia's Avatar
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    One EXTREMELY HELPFUL tool used often around here is MediaInfo. It tells you exactly what kind of media file you actually have (with a very few exceptions, and few inconsistencies). Use it on your "MPEG" file. Then use it on you demuxed files. Then use it on a DVD-Video VOB file.

    For example,
    Your "MPEG" file (assuming it truly is an mpeg file), which could be labelled *.MPG, *.MPEG, *.M2S, *.M2T, *.MTS, *.M2TS, *.MPS, *.MP4, or one of twenty other combinations, is likely one of only 5 mpeg-sanctioned containers:
    1. MPEG1 "System Stream"
    2. MPEG2 "Program Stream"
    3. DVD "VOB" (very similar to #2)
    4. MPEG2 "Transport Stream"
    5. MPEG4 Container (Part 12 + Part 14 file formats) - originally based on Quicktime .MOV

    When you author a disc (assuming you mean DVD-Video here, since you never mentioned anything about Blu-ray or AVCHD, or even VCD/SVCD), you need video + probably some audio + possibly also some subtitle assets that are specifically encoded to be acceptable to the DVD-Video spec. Read "What is DVD" above...This basically includes MPEG2 video (usually *.M2V), LPCM (*.WAV?) or DolbyDigital/AC3 or MPEGLayer2 (*.MP2) audio, and sub-picture-type subtitles.
    Anything else will have to be re-encoded into those formats first.

    Once again, get clear where you're starting from & what you have and then where you want to get to. You seem to be all over the map.

    Scott

    And yes, do not fall into the common newbie trap and misuse the term "rip" or "demux". Those are both very straightforward processes that leave basically identical outputs from their inputs.
    Last edited by Cornucopia; 30th May 2013 at 01:09.
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  8. Member
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    Here is the media info. I am using mp4 but I am using gui4aiuthor and cant seem to get it to use mp4s how can I use it to do thisk you John?

    Than
    Image Attached Files
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  9. Originally Posted by RBCC View Post
    Here is the media info. I am using mp4 but I am using gui4aiuthor and cant seem to get it to use mp4s how can I use it to do thisk?
    You can't. Go back and read Cornucopia's reply. Then read it again. MP4 isn't DVD compliant. You need MPEG-2 video. Your video has to be reencoded to make it DVD compliant. Nor is your video resolution DVD compliant. Nor is your audio DVD compliant. GUI4DVDAuthor is an authoring program. It doesn't reencode anything. It expects you to give it already compliant video and audio.

    Maybe try AVS2DVD to do the conversion and authoring. And take care to write out better posts so no one thinks you to be a functional illiterate.
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