Hello Tim!
thank you, it works for PAL and NTSC (720x512/720x480) but there is a
just little bug for NTSC when encoding to 720x486 in "stored dimension"!
My patch only deals with the addition of the display y offset metadata,
it should not touch exisiting metadata, are you saying that the figures
for 'Stored dimensions' are different with and without my patch?
Hello Tim, you are right.
I tried it with a non-patched ffmpeg version, and I got the same result:
MXF File Information:
Filename : I:\IMX_tests\IMX50_FFMPEG_NTSC_NEW.mxf
MXF version : 1.2
OP label : OP-1A (internal essence, stream file,
multi-track)
Wrapping type : Frame
Material package name :
Material start timecode : 00:00:00:00 (@ 30fps)
File src start timecode : 00:00:00:00 (@ 30fps)
Edit rate : 30000/1001
Precharge : 0
Duration : 599
Rollout : 0
Identifications :
Identification 0:
Generation UID : adab4424.2f254dc7.92ff29bd.000c0001
Company name : FFmpeg
Product name : OP1a Muxer
Product version : (not set)
Version string : 56.25.101
Product UID : adab4424.2f254dc7.92ff29bd.000c0002
Modification date : 0-00-00 00:00:00.000
Toolkit version : (not set)
Platform : (not set)
Track 0:
Essence kind : Picture
Essence type : D10 50Mbps
Essence label : 060e2b34.04010101.0d010301.02010201
Material package uid :
060a2b34.01010105.01010d00.13c0abba.52947134.3ec0abba.00529471.343ec000
Material track id : 2
Material track number: 0
File package uid :
060a2b34.01010105.01010d00.13c0abba.52947134.3ec0abba.00529471.343ec001
File track id : 2
File track number : 0x05010100
Edit rate : 30000/1001
Duration : 599
Lead filler offset : 0
Picture coding label : 060e2b34.04010101.04010202.01020102
Signal standard : 0 (None)
Frame layout : 1 (Separate Fields)
Stored dimensions : 720x496
Display dimensions : 720x486
Display x offset : 0
Display y offset : 0
Aspect ratio : 4/3
AFD : (not set)
Component depth : 8
Horiz subsampling : 2
Vert subsampling : 1
Color siting : 255 (Unknown)
Used syntax:
ffmpegnew -i <inputfile.avi> -map 0:v -map 0:a -c:v mpeg2video -r 29.97
-pix_fmt yuv422p -aspect 4:3 -minrate 50000k -maxrate 50000k -b:v 50000k
-intra -flags +ildct+low_del
ay -intra_vlc 1 -non_linear_quant 1 -ps 1 -qmin 1 -qmax 3 -top 1 -dc 10
-bufsize 2000000 -rc_init_occupancy 2000000 -rc_max_vbv_use 1
-rc_min_vbv_use 1 -c:a pcm_s24le -ar 48000 -f mxf_d10 -s 720x486
<outputfile.mxf>
Best Regards
Christoph
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