There are lot of steps involved in converting HD video to SD format for DVD authoring using freeware tools, check out my blog Converting High definition video to DVD compliant MPEG2 for the steps involved.
In order to simplify and make it a one step process, I have created a batch file which does the required job.
Requirements
- You should have your video clip as a Mpeg 2 I-Frame only Hd 19200 x 1080 interlaced, square pixel m2v file
- You should have AVISynth installed, you may get it from http://www.avisynth.org/
Instructions
- Download the complete package containing all the required freeware tools from here: http://www.titasraha.com/tools/hd2sd/hd2sdtools.zip
- Extract hd2sdtools.zip into a location of your choice
- Go to the command window and CD to the directory where you have your HD m2v file. (make sure that the extension is m2v)
- run the bactch file with your mpeg file as a parameter without the .mtv extension:
drive:\path\hd2sd YourMpgFile
- After all the encoding and conversions are complete, you will have a file named YourMpgFile_DVD.m2v
This is the DVD compliant wide screen anamorphic mpeg2 file, ready to be authored as a DVD
Batch File code
@echo off
set RootPath=%~d0%~p0
SET CACHEDIR=%RootPath%cache
SET VDUBDIR=%RootPath%vdub
SET DGDIR=%RootPath%DG
SET HCDIR=%RootPath%HC023
%DGDIR%\DGIndex -IF=[%CD%\%1.m2v] -OF=[%CD%\%1] -exit
echo LoadPlugin("%DGDIR%\DGDecode.dll") > %1.avs
echo MPEG2Source("%1.d2v") >> %1.avs
%VDUBDIR%\vdub.exe /s %VDUBDIR%\HDToSd.vcf /p %CD%\%1.avs %CACHEDIR%\SD.AVI /r
echo avisource("%CACHEDIR%\SD.AVI").ConvertToYV12() > %CACHEDIR%\SD.AVS
echo *LOGFILE %HCDIR%\HD2SD.log > %HCDIR%\HD2SD.ini
echo *BITRATE 7000 >> %HCDIR%\HD2SD.ini
echo *MAXBITRATE 8000 >> %HCDIR%\HD2SD.ini
echo *PROFILE best >> %HCDIR%\HD2SD.ini
echo *AUTOGOP 18 >> %HCDIR%\HD2SD.ini
echo *DC_PREC 10 >> %HCDIR%\HD2SD.ini
echo *INTERLACED >> %HCDIR%\HD2SD.ini
echo *WAIT 0 >> %HCDIR%\HD2SD.ini
echo *MATRIX mpeg >> %HCDIR%\HD2SD.ini
%HCDIR%\HCenc_023.exe -i %CACHEDIR%\SD.AVS -o %CD%\%1_DVD.m2v -ini %HCDIR%\HD2SD.ini
del %1.avs
del %1.d2v
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