[FFmpeg-user] FCPX-remuxed XAVC

[Vincent Olivier]

Hi,

Final Cut Pro X remixes Sony's XAVC material from the original MXF file to a MOV Quicktime container. The bitstream is (supposedly) untouched, but while FFMPEG can parse the original MXF file correctly, it refuses to recognize the AVC stream and pass it to x264.

I think Apple is using a new FOURCC identifier (aivx) that is not recognized as h264 but should be…

Here are the ffprobe's outputs for both files:

MOV file: Stream #0:0(und): Video: none (aivx / 0x78766961), 4096x2160, 231409 kb/s, SAR 1:1 DAR 256:135, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)

MXF file: Stream #0:0: Video: h264 (High 4:2:2 Intra), yuv422p10le, 4096x2160 [SAR 1:1 DAR 256:135], 23.98 fps, 23.98 tbr, 23.98 tbn, 47.95 tbc

Is there a way to force x264 decoding anyways through the command line or programmatically (I also wrote a program using libavcodec as libraries?

Here is the FFMPEG version I'm using: ffmpeg-devel-20131009_0+gpl2+nonfree.darwin_12.x86_64.tbz2 from http://lil.fr.packages.macports.org/ffmpeg-devel

Regards, and thanks.

Vincent
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