Why does Nero Video sometimes have to re-encode to burn a second copy of a DVD?

When making multiple copies of a DVD sometimes I can put in a disc and just burn a second DVD right after the first and sometimes it has to go through and encode the video files again which can take up to an extra hour.
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  • Transcoding again is a standardprocedure if you made changes after the first burn.
    If you don't make any changes after the first creation, we recommend to create your project to the ImageRecorder as a NRG file or a DVD-Video structure to a folder on your harddrive.

    You can burn this output using Nero Burning Rom several times if you need multiple copies.
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    • That's different than copying a disc, which is the subject of this thread. If you're creating a DVD-Video, just burn the project to your hard drive in a folder you specify. That will create a video_ts folder. You can import that into Burning Rom or Nero Express and burn as many copies as you want with out additional encoding.
    • NONSENSE!

      1. There is nothing in the original question which indicates Andrew was talking about copying a DVD -- in fact, if he were copying a DVD there would be no need for re-encoding the files -- or for encoding them in the first place. The problem he described occurs when you burn a DVD then try to burn another copy of the same DVD.

      2. In the "solution" you describe we are exactly back to my original comment - that it means needing to use two different programs to accomplish one task which earlier versions handled simply and easily with just one program.

      3. And, oh by the way, creating the video_ts folders and files on your hard drive with one Nero program then having another Nero program copy them is as slow or slower than letting Nero Video waste time re-encoding the same files over and over.
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  • You're right, I failed to read "Nero Video" in the description of this thread. :( My apologies.

    There is no capability in previous versions of Nero Video to burn multiple copies. I don't know how Andrew was able to burn a second copy without encoding.

    Not sure why it would be slower with the method I described (and what Christianz mentioned). The project is encoded one time and it's simply copied to disc in either Burning Rom or Nero Express and you can specify the number of copies to burn.
    • I'm not sure when the capability to burn repeated copies of the same DVD without re-encoding went away -- perhaps it was when they broke out Nero Video as a separate program from Nero Burning ROM. I'm a dinosaur who started with Nero 6 or 7 back when they had version numbers instead of years.

      As I recall, Nero 7 and Nero 9 both had the capability to burn the same project over and over and over - as many times as you might want - without needing to wait for the program to re-encode the files and certainly without using two programs to do it.

      You just fired up Nero Burning ROM (which was the whole thing in one program), imported your files, designed your menus, waited for the program to encode them, waited for the program to burn them once, then if you selected to burn another copy of the same disc without changing anything it went direct to burning the disc.

      As for the speed of your solution, when I said it would be slower I could be wrong, but I was basing it on assuming using just one DVD drive and how the program performed the last time I used it to make a DVD from the video-ts files. As I understand it, in your method we would use Nero Video to import and encode the files and have it write the finished project to the hard drive instead of burning it to a DVD. Obviously the import/encode time is the same either way. The time to write the project to the hard drive should be a little faster than burning the project to disc but not a lot faster. Then we would have Nero Burning ROM read the project files from the hard drive and burn them to disc, then do it again. Perhaps Nero has gotten faster at reading files from the hard drive and burning them as a DVD, but as I recall the last time I used Nero Burning ROM to do that, it did not get in any big hurry because it read part of the file then burned it then read more of the file then burned it and so on and so on. Admittedly machines were slower and usually had less RAM the last time I messed with Nero Burning ROM.

      I'm sure your solution would work and it might even be faster depending on the time used for re-encoding, but it just feels annoying to have to use two different programs to do something that used to be easier. Maybe I'm out of touch, but I just don't understand the rationale for breaking up a program into a bunch of separate bits that perform overlapping tasks - especially when doing that makes some of those tasks harder to do.
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  • Actually, there is an option to "burn again" in Nero Video when performing a DVD / DVD video disk job ... at least there is in Nero 2016.

    I have done it myself and it did not go through another transcoding ... it simply burned again. I imagine this option must be selected while still fresh after the first creation, else the temporary image created in the first run would delete itself.

    As to whether or not it still works in more recent versions ... I don't know.

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  • Maybe you are Luckier than us, Phil.

    I remember "Burn Again" working properly in some earlier versions but the identical menu option in Nero 2014 makes you wait for the program to re-encode all the files.







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    • I'm running Windows 7 (64bit) on a Lenovo computer running a G620 CPU at 2.60GHz; 6GB RAM. Nero 2014 resides on the C: drive which is a conventional 1TB hard drive with 576GB free. All the other hard drives on the system are also conventional hard drives (no SSDs). Writing is to the OEM DVD-RW ATA drive, currently using HP 16x DVD+R discs.

      All settings in Nero are the defaults except that when burning DVDs I normally select the slowest burning speed instead of the default "Max" - that is just a habit from years ago when I found it more reliable to ensure Nero Burning ROM didn't empty the buffer while writing (a problem that I know they have fixed since them, but I still do it)
    • Quite a mystery why one person has it working and another does not ... hopefully someone will come up with an explanation :(

      BTW ... using a slow burn speed is a very wise choice in my experience.
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  • 1
    Tom,

    I don't see where your screenshots show recoding happening. Here's a video of Nero 2014 Video "burning again" twice:

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  • Great work Omega -- you proved that Nero Video can write a tiny video image file over and over -- NOTHING ABOUT BURNING AN ACTUAL DVD.

    And, if you had bothered actually looking at the screen shots I posted (instead of glancing at the thumbnails and ignoring them) you would have known exactly what each of the four pictures showed.

    1 - the first one showed Nero Video at the moment it finished writing the first DVD, when Nero Video tells you it completed successfully and asks if you want to save the log file.

    2 - the second screen shot shows where Nero Video goes the instant you close the Save Log File dialog box. That is the menu where you can choose the nearly useless "Burn Again" option

    3 - the third picture shows the screen that Nero Video jumps to when you choose "Burn Again" from the menu shown in picture 2. This is the screen where you would simply click BURN if you were really burning a DVD -- it is the same screen where you entered the new filename for Nero Video to save the file in your video.

    4 - the final picture shows what happens when you click BURN from the screen in picture 3. It shows Nero Video clearly re-encoding the same files before burning them even though no changes have been made.

    No one has questioned Nero Video's ability to write an image file to the computer hard drive -- what people using Nero 2014 have questioned is why the so-called "Burn Again" option has to re-encode the same files each time before burning them to the DVD. Previous versions of Nero Video (and previous versions of Nero Burning ROM before Video was split off from it) all were able to burn DVDs without re-encoding so long as you didn't make any changes. I have been told that newer versions of the Nero bundle (Nero 2016 at least) do have Burn Again working properly like it did in earlier versions. And yes, Omega, we know the kludge workaround of using Nero Video to write the image to the hard drive then using Nero Burning ROM to repeatedly burn DVDs from that image file. It is still a KLUDGE.
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  • Tom,

    I suppose that you are able to "write a tiny video image file over and over" on your system as I did on mine?

    I'm not seeing the message "Creating menus and transcoding streams" on your fourth screenshot, so I'm not sure why you claim that transcoding is taking place.

    Here's a video showing that actual DVDs can be burned again without transcoding on my system:

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  • I’m frustrated
    I'm not sure what you were writing in that video, but clearly it was not a DVD video because Nero never wrote the lead in and lead out that is always writes when making a DVD video.

    OK, Omega, I'm not going to be bothered with a troll, obviously you must be right and everyone else who has actually tried burning DVDs in Nero 2014 must be wrong.
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  • 1
    Tom,

    I'm sorry it wasn't clear what was happening in the last video. It shows a entire actual disc being burned, followed by a 2nd disc being burned until aborted. After recording the original video, I edited it in Nero Video, speeding up much of the 1st transcoding/burning to save viewing time. After it was clear that the 2nd disc was not transcoding, but burning immediately, I aborted the second burn. Here are some screenshots:

















    P.S. Apparently, I "aborted" while the lead-out was being written and it actually finished it since I was able to play it.
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  • Tom,
    I have found over the years that odd things going on in Nero Video can *sometimes* be "cured" by cleaning out the cache files ...

    Might be worth a try:

    You can delete the Nero Video "Cache" folders, and they will be re-initiated when Nero Video starts up again.

    Where to do the deleting:

    For Nero 2014 :

    (1)
    Delete the folder "Nero Vision" at
    C:\users\YOUR USER NAME\AppData\Local\Nero\Nero 15

    (2)
    Delete the folder "SharedMediaData" at
    C:\users\YOUR USER NAME\AppData\Local\Nero

    (3)
    Delete the folder "Nero Vision" at
    C:\users\YOUR USER NAME\AppData\Roaming\Nero\Nero 15

    Note: The above folders are usually "hidden" folders in Windows, so you might have to use the "View" Tab in Windows File Explorer to show hidden files from C:\users\YOUR USER NAME
    and below.
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  • I think the solution to how to do this in Nero Video is, after creating the project, select Options and select 2-pass. Burn it to disc and then select Burn Again. There may be a brief period where it says it's doing something but, shortly thereafter, it will burn to disc.
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  • I guess no one has tried my suggestion. I tried it before posting and it worked like a champ. After hitting the Burn Again, it only showed the standard Create a Menu.... which took all of about 10 seconds and it immediately burned the disc. No video encoding. It was all done in about 2 minutes.
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    • From the help file-

      High Quality (2-pass VBR) - Encodes the video in two passes with variable data rate. Encoding takes longer, but the quality is better. VBR stands for Variable Bit Rate and means that individual periods in a video are encoded using different, suitable data rates: Scenes with a lot of movement are encoded with a higher bit rate than scenes with less movement.

      It doesn't specifically say that the first burn is to the hard drive but, if you look at the burn log for any 2- pass burn, it will say that the burn to disc was succesful and then procede to burn it to the DVD.
    • Wither 1,

      The encoding method, 1-pass or 2-pass, has absolutely nothing to do with the burn process. If you can't see that, then I suggest you discuss the issue with one of your contacts at Nero. In the meantime, please stop posting this gibberish.
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  • Tom,

    I've successfully burned a full DVD and then "burned again" with no transcoding taking place.

    Here's the Burn Options page showing the length of the title, etc.:



    Here's a screen shot after the burn completed:



    At this point, I started recording and proceeded to burn again. Here's a YouTube video showing that no transcoding took place:



    Now I think it's your turn to provide some details.

    After completing the first burn, the image file can be found in the %TEMP% folder. On my system it is:

    "C:\Users\Armand\AppData\Local\Temp\NeroVideo"

    As I said above, there's no indication on your screen shots that any transcoding was happening although screenshot 4 may indicate that the process froze after 5 seconds?

    Perhaps, you could take a few minutes to try the shorter tests?
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