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  1. Hi. I use edius 7.53 and the proxy files are encodede with mxf mpeg2 352x288 with M and N settings, aspect ratio is 1.222 and it's OP1a format. Even though they are proxies I still struggle to play them smoothly in multicam scenarios. Is there a way to covert these using FFMpeg so that they are all I frame with no other attributes change. PS normal encoders that export MPEG2 do not recognize the file as a valid proxy. Maybe Edius is very fussy about these things.
    Can anyone help? Thanks
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  2. Originally Posted by zahoor View Post
    Hi. I use edius 7.53 and the proxy files are encodede with mxf mpeg2 352x288 with M and N settings, aspect ratio is 1.222 and it's OP1a format. Even though they are proxies I still struggle to play them smoothly in multicam scenarios. Is there a way to covert these using FFMpeg so that they are all I frame with no other attributes change. PS normal encoders that export MPEG2 do not recognize the file as a valid proxy. Maybe Edius is very fussy about these things.
    Can anyone help? Thanks
    What are the other attributes ? ffmpeg does not necessarily copy all attributes automatically, some you have to enter

    -g 1 would be I-frame in ffmpeg

    It would look something like this, but you have not given the other attributes

    Code:
    ffmpeg -i input.mxf -c:v mpeg2video -q:v 4 -g 1 -c:a copy output.mxf
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  3. I examined the original and processed clips , spent about 2 days examining different attributes of the files and the ones that vary that I have no control over are
    a) Format version (1.2 in edius and 1.3 in all the others)
    b) Timecode attributes
    c) the writing application.

    For info I have included all the detailed attributes, The main ones (as reported by windows media player ) are the same in both clips.

    The detailed ones are
    General
    Format : MXF
    Format version : 1.2
    Format profile : OP-1a
    Format settings : Open / Complete
    File size : 3.12 MiB
    Duration : 23 s 520 ms
    Overall bit rate mode : Variable
    Overall bit rate : 1 114 kb/s
    Encoded date : 2021-02-26 17:11:57.064
    Writing application : Grass Valley K.K. EDIUS 7.0

    Video
    ID : 2
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@Main
    Format settings, BVOP : Yes
    Format settings, Matrix : Custom
    Format settings, GOP : M=3, N=15
    Format settings, wrapping mode : Frame
    Codec ID : 0D01030102046001-0401020201011100
    Duration : 23 s 520 ms
    Bit rate mode : Variable
    Bit rate : 1 000 kb/s
    Width : 352 pixels
    Height : 288 pixels
    Display aspect ratio : 1.222
    Original display aspect ratio : 16:9
    Frame rate : 25.000 FPS
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.395
    Time code of first frame : 06:12:16:23
    Time code source : Group of pictures header
    GOP, Open/Closed : Open
    GOP, Open/Closed of first fram : Closed
    Stream size : 2.80 MiB (90%)

    Audio
    ID : 3
    Format : MPEG Audio
    Format version : Version 1
    Format profile : Layer 2
    Format settings, wrapping mode : Frame
    Codec ID : 0D01030102044001-0402020203020500
    Duration : 23 s 520 ms
    Bit rate mode : Constant
    Bit rate : 64.0 kb/s
    Channel(s) : 2 channels
    Sampling rate : 48.0 kHz
    Frame rate : 25.000 FPS (1920 SPF)
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 184 KiB (6%)
    Locked : Yes

    Other #1
    ID : 1-Material
    Type : Time code
    Format : MXF TC
    Time code of first frame : 06:12:16:23
    Time code settings : Material Package
    Time code, striped : Yes

    Other #2
    ID : 1-Source
    Type : Time code
    Format : MXF TC
    Time code of first frame : 06:12:16:23
    Time code settings : Source Package
    Time code, striped : Yes

    Other #3
    Type : Time code
    Format : SMPTE TC
    Muxing mode : SDTI
    Time code of first frame : 06:12:16:23
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  4. and Thasnk you for your help
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