Hello all,
I'm trying to generate an AVC Intra 100 from an XDCAM 50 file. I already have
compiled x264 with 10bit depth and seems to be correctly transcoding. The
problem is that EVS doesn't seem to properly recognize it. Amberfin is working
properly with the generated mxf however.
This is my current command line:
ffmpeg10bit -i xdcam50.mxf -map 0 -c:v libx264 -r 25 -g 1 -pix_fmt yuv422p10le
-vb 100M -flags +ildct+ilme -tune psnr -x264opts avcintra-class=100 -x264opts
colorprim=bt709 -x264opts transfer=bt709 -x264opts colormatrix=bt709 -x264opts
tune=psnr -x264opts interlaced=1 -x264opts force-cfr=1 -x264opts fps=25/1 -vf
"setfield=1" -c:a copy -f mxf avci100.mxf
I even tried using bmxlib to rewrap the mxf, but no luck. This is the command
line:
bmxtranswrap --coding-eq 'bt709' --color-prim 'bt709' --transfer-ch 'bt709' -o
avci100final.mxf avci100.mxf
Also, when I compare the Media Info output from an EVS generated AVC Intra with
my transcode, you can see this:
EVS ffmpeg + bmx
ID : 2 ID : 1001
Format : AVC Format : AVC
Format/Info : Advanced Video Codec Format/Info :
Advanced Video Codec
Format profile : High 4:2:2 Intra@L4.1 Format profile
: High 4:2:2 Intra@L4.1
Format settings, CABAC : No Format
settings, CABAC : No
Format settings, GOP : N=1 Format
settings, GOP : N=1
Format settings, wrapping mode : Frame Format
settings, wrapping mode : Frame
Codec ID : 0D01030102106001-0401020201323102 Codec ID :
0D01030102106001-0401020201323001
Duration : 11 min Duration : 24s
240ms
Bit rate : 100.0 Mb/s Bit rate :
100.0 Mbps
Width : 1 920 pixels Width : 1 920
pixels
Height : 1 080 pixels Height : 1 080
pixels
Display aspect ratio : 16:9 Display aspect
ratio : 16:9
Frame rate mode
: Variable
Frame rate : 25.000 FPS Frame rate :
25.000 fps
Standard : Component
Color space : YUV Color space :
YUV
Chroma subsampling : 4:2:2 Chroma
subsampling : 4:2:2
Bit depth : 10 bits Bit depth : 10
bits
Scan type : MBAFF Scan type :
MBAFF
Scan type,
store method : Interleaved fields
Scan order : Top Field First Scan order :
Top Field First
Bits/(Pixel*Frame) : 1.929
Bits/(Pixel*Frame) : 1.929
Stream size : 8.32 GiB (84%) Stream size :
289 MiB (91%)
Title : Picture Title : V1
Color range : Full
Writing library
: x264 core 148 r2705 3f5ed56
Encoding
settings : cabac=0 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex /
subme=7 / psy=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 /
8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 /
threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 /
interlaced=tff / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0
/ keyint=1 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc=abr / mbtree=0 /
bitrate=100000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=81 / qpstep=4 /
ip_ratio=1.40 / aq=0
Color primaries : BT.709 Color primaries
: BT.709
Transfer characteristics : BT.709 Transfer
characteristics : BT.709
Matrix coefficients : BT.709 Matrix
coefficients : BT.709
It's very similar but what worries me is the codec id, which both differ. And
why Mediainfo is reporting variable frame rate with my transcode. You can also
see the different essence comparing the output of mxf2raw -i:
My transcode:
essence_kind : Picture
essence_type : AVC_High_422_Intra
EVS AVC Intra 100:
essence_kind : Picture
essence_type : AVCI_100_1080i
Do you know if there is any way in which I can get rid of those differences?
Even though I'm not even sure those differences are the reason why EVS is not
accepting my file.
Anyone has experience with generating EVS compatible AVC Intra 100 files? Thank
you and best regards,
Victor
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