what ffmpeg commandline should I use ?

[halsboss]

Help ! Having a spot of bother converting from PAL 1080i to 576i for burning to DVD. I'd thought the batch file below would do it (then run DVDshrink over the result of subsequent DVD authoring if need be to fit onto a DVD)...

The ffmpeg switches -sameq and/or -target pal-dvd seem to over-ride others and in particular the -maxrate setting, using ffmpeg version 11143 which uses the new syntax with "k" at the end of bitrates etc.

@echo on
set  fINPUT=G:\HDTV\Our World In HD TEN HD.ts
set fOUTPUT=G:\HDTV\Our World In HD TEN HD.ts.mpg
set fSIZE=704x576
set fASPECT=16:9
set fMAXBITRATE=9400k
Rem Tff=1 Bff=0
set FieldFirst=1
"C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -maxrate %fMAXBITRATE% -dc 10 -target pal-dvd -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -sameq  -dc 10 -s %fSIZE% -aspect %fASPECT% -ab 192k -ar 48000 -ac 2 -acodec ac3 "%fOUTPUT%"
pause

Can some kind expert please suggest the right commandline (like the above) which will yield the result intended above ?

Thanks

[halsboss]

Answer suggested in http://forum.doom9.org/showthread.php?p=1101009#post1101009
both 1-pass and 2-pass :-

@echo on
REM 1-pass 1080i to 576i
set        fINPUT=G:\HDTV\0\TEST 7 HD Digital.ts
set       fOUTPUT=G:\HDTV\0\TEST 7 HD Digital.ts.mpg
set f2passlogfile=G:\HDTV\0\TEST 7 HD Digital.ts.2pass.log
set fSIZE=704x576
set fASPECT=16:9
set faveragebitrate=9000k
set fMAXBITRATE=9400k
set fMINBITRATE=1000k
set faudiofreq=48000
set faudiobitrate=192k
Rem Tff=1 Bff=0
set FieldFirst=1
REM --- old --- "C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -maxrate %fMAXBITRATE% -dc 10 -target pal-dvd -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -sameq  -dc 10 -s %fSIZE% -aspect %fASPECT% -ab 192k -ar 48000 -ac 2 -acodec ac3 "%fOUTPUT%"
REM "C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -target pal-dvd -b %faveragebitrate% -minrate %fMINBITRATE% -maxrate %fMAXBITRATE% -sameq -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -dc 10 -s %fSIZE% -aspect %fASPECT% -ab %faudiobitrate% -ar %faudiofreq% -ac 2 -acodec ac3 "%fOUTPUT%"
"C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -target pal-dvd -b %faveragebitrate% -minrate %fMINBITRATE% -maxrate %fMAXBITRATE% -qmin 1 -qmax 31 -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -dc 10 -s %fSIZE% -aspect %fASPECT% -ab %faudiobitrate% -ar %faudiofreq% -ac 2 -acodec ac3 "%fOUTPUT%"
pause
exit

@echo on
REM 2-pass 1080i to 576i
set        fINPUT=G:\HDTV\0\TEST 7 HD Digital.ts
set       fOUTPUT=G:\HDTV\0\TEST 7 HD Digital.ts.mpg
set f2passlogfile=G:\HDTV\0\TEST 7 HD Digital.ts.2pass.log
set fSIZE=704x576
set fASPECT=16:9
set faveragebitrate=9000k
set fMAXBITRATE=9400k
set fMINBITRATE=1000k
set faudiofreq=48000
set faudiobitrate=192k
Rem Tff=1 Bff=0
set FieldFirst=1
REM --- old --- "C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -maxrate %fMAXBITRATE% -dc 10 -target pal-dvd -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -sameq  -dc 10 -s %fSIZE% -aspect %fASPECT% -ab 192k -ar 48000 -ac 2 -acodec ac3 "%fOUTPUT%"
"C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -pass 1 -passlogfile "%f2passlogfile%" -target pal-dvd -b %faveragebitrate% -minrate %fMINBITRATE% -maxrate %fMAXBITRATE% -qmin 1 -qmax 31 -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -dc 10 -s %fSIZE% -aspect %fASPECT% -an "%fOUTPUT%"
"C:\SOFTWARE\ffmpeg\ffmpeg.exe" -y -i "%fINPUT%" -pass 2 -passlogfile "%f2passlogfile%" -target pal-dvd -b %faveragebitrate% -minrate %fMINBITRATE% -maxrate %fMAXBITRATE% -qmin 1 -qmax 31 -ilme -ildct -flags +ildct+ilme -top %FieldFirst% -dc 10 -s %fSIZE% -aspect %fASPECT% -ab %faudiobitrate% -ar %faudiofreq% -ac 2 -acodec ac3 "%fOUTPUT%"
pause
exit

[halsboss]

Be careful with ffmpeg after all. The ffmpeg user mailing list confirms what I subsequently found out by testing and examining the bitrate in a btrate viewer... ffmpeg produces bitrate spikes in the resulting output file which go outside the DVD spec.

Back to the ever-trusty HC !