ffmpeg scaling video resolution

[marcorocchini]

Hi cats,

kindly I need help to do this operation:

My attached input.avi is recognized by ffmpeg as 1920X1088 instead of 1080, so to "normalize" this input avi file is necessary to crop the source with a line of this kind:

-vf crop=1920:1080:0:0

after this I need to scale it (jet 1920x1080) from hd to sd using a thing similar to this line

-vf yadif=1:tff,scale=720:576,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace -sws_flags lanczos+accurate_rnd

but the input have to be treated with pc level using a thing similar to this line

-vf scale=interl=1:in_range=pc:out_range=pc

I try various commandline but I get some error, please can anyone help me to do this 3 operation? I get alwais a HD output and/or not the tv-->pc levels

Is there a way to do this 3 operation in a unique commandline? thanks

[sneaker]

Try -vf yadif=mode=1:parity=0,crop=h=1080:y=0,scale=w=720: h=576:in_range=pc:out_range=tv,interlace,setsar=16/11
Also remember to enable proper interlaced encoding, parity and range in the encoder.

[marcorocchini]

IF "%FullHD%"=="1" v:\automazioneclip\core\ffmpeg.exe -y -i %4 -i "%audiosource%" -vf yadif=1:tff,crop=h=1080:y=0,scale=w=720:h=576:in_range=%inRange2%:out_range=%outRange2%,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace -pix_fmt yuv420p -c:v libx264 -profile:v main -level:v 3 -g 33 -bf 2 -crf 15 -flags +ildct+ilme -top 1 %AudioSettings% %anFlag% -aspect 16:9 "%~n1_Mp4_SDdownscale_420PortaAPorta_%panState%.mov"

thanks, it works!

[pandy]

IF "%FullHD%"=="1" v:\automazioneclip\core\ffmpeg.exe -y -i %4 -i "%audiosource%" -vf yadif=1:tff,crop=h=1080:y=0,scale=w=720:h=576:in_range=%inRange2%:out_range=%outRange2%,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace -pix_fmt yuv420p -c:v libx264 -profile:v main -level:v 3 -g 33 -bf 2 -crf 15 -flags +ildct+ilme -top 1 %AudioSettings% %anFlag% -aspect 16:9 "%~n1_Mp4_SDdownscale_420PortaAPorta_%panState%.mov"

thanks, it works!

IF "%FullHD%"=="1" v:\automazioneclip\core\ffmpeg.exe -y -i %4 -color_range 2 -i "%audiosource%" -vf yadif=1:tff,crop=h=1080:y=0,scale=w=720:h=576:in_range=%inRange2%:out_range=%outRange2%,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace -color_range 1 -pix_fmt yuv420p -c:v libx264 -profile:v main -level:v 3 -g 33 -bf 2 -crf 15 -flags +ildct+ilme -top 1 %AudioSettings% %anFlag% -aspect 16:9 "%~n1_Mp4_SDdownscale_420PortaAPorta_%panState%.mov"

May work better, i would also unsharp before resize and i would specify for scaler flags too for example:

scale=w=720:h=576:sws_flags=spline+accurate_rnd+full_chroma_int+full_chroma_inp:sws_dither=0:in_range=1:out_range=1

[marcorocchini]

Hi c*t, please consider this isput source: C0007.MXF

https://dl.dropboxusercontent.com/u/39871584/C0007.MXF

this is an interlace 1440x1080 25fps video file

I need to downscale it, at the best quality, to SD 720x576 and upscale to HD 1920X1080

target file should be MP4 H.264 (x264) 4:2:2 for both

ffmpeg.exe -y -i c0007.mxf -color_range 2 -vf yadif=1:tff,scale=w=720:h=576:sws_flags=spline+accurate_rnd+full_chroma_int+full_chroma_inp:sws_dither=0:in_range=tv:out_range=tv,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace -color_range 1 -pix_fmt yuv422p -c:v libx264 -profile:v high422 -level:v 3 -g 33 -bf 2 -crf 15 -flags +ildct+ilme -top 1 -an -aspect 16:9 outSD.mp4

ffmpeg.exe -y -i c0007.mxf -color_range 2 -vf yadif=1:tff,scale=w=1920:h=1080:sws_flags=spline+accurate_rnd+full_chroma_int+full_chroma_inp:sws_dither=0:in_range=tv:out_range=tv,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,interlace -color_range 1 -pix_fmt yuv422p -c:v libx264 -profile:v high422 -level:v 3 -g 33 -bf 2 -crf 15 -flags +ildct+ilme -top 1 -an -aspect 16:9 outFullHD.mp4

is this correct?

[pandy]

is this correct?

Seem to be OK - however you may consider to use zscale https://ffmpeg.org/ffmpeg-filters.html#zscale instead sws_scale - accordingly to some people it should provide better resize quality.

zscale=d=ordered:f=spline36:r=full:w=iw/2:h=-2

[marcorocchini]

ah ok but my commandline how should be become?

[pandy]

HD

-vf yadif=1:tff,zscale=w=1920:h=1080:f=spline36:r=full,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,interlace

SD

-vf yadif=1:tff,zscale=w=720:h=576:f=spline36:r=full,unsharp=luma_msize_x=3:luma_msize_y=3:luma_amount=0.8,colormatrix=bt709:bt601,interlace