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Old 17th January 2016, 03:04   #4  |  Link
manolito
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Join Date: Sep 2003
Location: Berlin, Germany
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Hi thetrueavatar,

your FFMpeg command line encodes the source at constant quality (VBR), a value of 1 will give you the highest quality (but it will not be lossless). You did not say how long your source file is, but if it is quite short then the result will not fill the DVD because the DVD bitrate has an upper limit (~9000 kbps).

Here is an FFMpeg command line which will encode a source to a DVD compliant MPEG file and fill up the DVD as much as possible. It uses the FOX Home Theater matrix (suitable for very high bitrates). Audio is converted to AC3at 224 kbps. You need to edit the command line for your input and output, and also set the desired video bitrate (it is set to 8000 kbps).

Quote:
ffmpeg.exe "MY_SOURCE_FILE" -f dvd -c:v:0 mpeg2video -bf 2 -mbd rd -trellis 2 -cmp 2 -subcmp 2 -intra_matrix "8,8,9,9,10,10,11,11,8,9,9,10,10,11,11,12,9,9,10,10,11,11,12,12,9,10,10,11,11,12,13,13,10,10,11,11,12,13,13,14,10,11,11,12,13,13,14,15,11,11,12,13,13,14,15,15,11,12,12,13,14,15,15,16" -inter_matrix "8,8,9,9,10,10,11,11,8,9,9,10,10,11,11,12,9,9,10,10,11,11,12,12,9,10,10,11,11,12,13,13,10,10,11,11,12,13,13,14,10,11,11,12,13,13,14,15,11,11,12,13,13,14,15,15,11,12,12,13,14,15,15,16" -aspect 16:9 -s 720x576 -r 25 -g 15 -b:v:0 8000000 -maxrate:v:0 8500000 -qmin 1 -lmin 175 -bufsize:v:0 1835008 -packetsize 2048 -muxrate 10080000 -b:a 224000 -ar 48000 -c:a:0 ac3 -map 0:v -map 0:a -map -0:s "MY_OUTPUT.mpg"

The other problem is that Nero has the tendency to always reencode the source even if it is already DVD compliant. This is an old Nero issue, not much you can do about it.

But there is a way to use the Nero menu which you already made with an already authored menuless VIDEO_TS structure. This method uses PGCEdit. You would need to author your FFMpeg encoding result to a DVD structure first (demux the .mpg file, then use MuxMan for authoring).

I uploaded a short tutorial about this method here:
http://www61.zippyshare.com/v/FQm48QTQ/file.html



If the menu you already made with Nero is not too elaborate and you wouldn't mind starting over, then my recommendation would be to forget Nero altogether. Use AVStoDVD instead, it can create nice menus, it encodes at very high quality (HCenc), and it is easy to use (much easier than Nero IMO).



Good luck
manolito
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