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kieranjol / IFIscripts

Detailed documentation is available here: http://ifiscripts.readthedocs.io/en/latest/index.html
http://ifiscripts.readthedocs.io/en/latest/index.html
MIT License
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dcpaccess - failed to find absolute offset #125

Open joshuatj opened 7 years ago

joshuatj commented 7 years ago

The same conversion task for multiple reels DCP gave these warnings. I'm not familiar enough with mxf to know whether it's a big deal. Just reporting the issue as part of due diligence.

[mxf @ 00000290421700a0] failed to find absolute offset of 1F54140 in BodySID 1 - partial file?
[mxf @ 00000290416cb840] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029025a6d8e0] "OPAtom" with 2 ECs - assuming OP1abitrate= 786.5kbits/s speed=0.645x
[mxf @ 00000290416cb840] failed to find absolute offset of 2C3A3460 in BodySID 1 - partial file?
[mxf @ 0000029042a6c500] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6cb20] "OPAtom" with 2 ECs - assuming OP1abitrate=6054.1kbits/s speed=0.482x
[mxf @ 0000029042a6c500] failed to find absolute offset of 1475E4C8 in BodySID 1 - partial file?
[mxf @ 0000029042a6f580] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6c500] "OPAtom" with 2 ECs - assuming OP1abitrate=5283.5kbits/s speed=0.477x
[mxf @ 0000029042a6f580] failed to find absolute offset of 32101378 in BodySID 1 - partial file?
[mxf @ 0000029042a6cb20] "OPAtom" with 2 ECs - assuming OP1abitrate=5221.2kbits/s speed=0.49x
[mxf @ 0000029042a6dd40] "OPAtom" with 2 ECs - assuming OP1abitrate=5202.2kbits/s speed=0.49x
[mxf @ 0000029042a6cb20] failed to find absolute offset of 1A132774 in BodySID 1 - partial file?
[mxf @ 0000029042a6cb20] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6e360] "OPAtom" with 2 ECs - assuming OP1abitrate=5039.8kbits/s speed=0.493x
[mxf @ 0000029042a6cb20] failed to find absolute offset of 31D39E20 in BodySID 1 - partial file?
[mxf @ 0000029042a6fba0] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6c500] "OPAtom" with 2 ECs - assuming OP1abitrate=4800.7kbits/s speed=0.51x
[mxf @ 0000029042a6fba0] failed to find absolute offset of 2457FE80 in BodySID 1 - partial file?
[mxf @ 0000029042a6cb20] "OPAtom" with 2 ECs - assuming OP1a bitrate=5043.4kbits/s speed=0.512x
[mxf @ 0000029042a6e360] "OPAtom" with 2 ECs - assuming OP1a bitrate=5034.2kbits/s speed=0.512x
[mxf @ 0000029042a6cb20] failed to find absolute offset of 298521BC in BodySID 1 - partial file?
[mxf @ 0000029042a6e960] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6fba0] "OPAtom" with 2 ECs - assuming OP1a bitrate=5179.4kbits/s speed=0.507x
[mxf @ 0000029042a6e960] failed to find absolute offset of 3A4AC68C in BodySID 1 - partial file?
[mxf @ 0000029042a6cb20] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6d120] "OPAtom" with 2 ECs - assuming OP1a bitrate=5337.0kbits/s speed=0.505x
[mxf @ 0000029042a6cb20] failed to find absolute offset of 2CAFD2D8 in BodySID 1 - partial file?
[mxf @ 0000029042a6d740] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6dd40] "OPAtom" with 2 ECs - assuming OP1a bitrate=5162.5kbits/s speed=0.509x
[mxf @ 0000029042a6d740] failed to find absolute offset of 266195C4 in BodySID 1 - partial file?
[mxf @ 0000029042a6d120] "OPAtom" with 2 ECs - assuming OP1a
[mxf @ 0000029042a6d740] "OPAtom" with 2 ECs - assuming OP1a bitrate=5463.8kbits/s speed=0.506x
[mxf @ 0000029042a6d120] failed to find absolute offset of 6B35E74 in BodySID 1 - partial file?
frame=195215 fps= 12 q=-1.0 Lsize= 5343048kB time=02:15:33.87 bitrate=5381.2kbits/s speed=0.508x
video:5014358kB audio:324587kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.076838%
[libx264 @ 000002903e160520] frame I:1281  Avg QP:15.37  size:148011
kieranjol commented 7 years ago

Hey, I usually get some warnings when a new reel starts but I never investigated it too much. I should though! It's probably worth asking on ffmpeg-user. I'm not familiar with the inner workings of MXF either (i don't think it's as easy to understand as other containers on a trace level).