[FFmpeg-user] Piping output of ffmpeg into ffmbc

Fri Aug 19 14:10:43 EEST 2016

Hi Keith,

you don't need ffmbc to create IMX MXF OP1a that can be read by Avid, you
can do this with ffmpeg alone. I guess you also mean AMA linking, not fast
importing, right? (I'm testing on MC 7.0.5 here and the only way to get an
MXF file into the project is AMA linking)
What ffmpeg can't do atm (or I'm just doing it wrong), is create OP-Atom
files that Avid accepts.

The command most sites link to (the old ffmpeg_howto) is correct (in Avid
terms) for the most part, but you need to pad your scaled (active) video
with 32 VBI lines (black) at the top. You also need to manipulate your
audio to meet IMX standards.

Erik

2016-08-18 23:23 GMT+02:00 Paul B Mahol <onemda at gmail.com>:

> On 8/18/16, Keith Reilly <kreilly at retroreport.com> wrote:
> > I use ffmbc to create Avid supported files for fast import (ffmpeg
> doesn't
> > do this). ffmbc is behind in development so there are codecs it cannot
> read
> > that i need it to. My solution is to simply read the file with ffmpeg and
> > pass it on to ffmbc via standard output that way i can make Avid media
> with
> > anything ffmpeg reads. However i have an issue. I do not get the whole
> > video converted.
> >
> >  I'm running on Mac os 10.11.6 ffmpeg was installed with macports, ffmbc
> > from source. The video is about 1 hour 27 min long, i get roughly 5
> minutes
> > of the imx50 file that is perfect except for the missing hour and 22min.
> >
> > console input:
> > ffmpeg -i _Youtube.webm -c:v rawvideo -c:a pcm_s16le -f avi pipe:1 |
> ffmbc
> > -i pipe:0 -r 29.97 -target imx50 _Youtube.mxf
> >
> > output:
> >
> > ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg developers
> >
> >   built with Apple LLVM version 7.3.0 (clang-703.0.31)
> >
> >   configuration: --prefix=/opt/local --enable-swscale --enable-avfilter
> > --enable-avresample --enable-libmp3lame --enable-libvorbis
> --enable-libopus
> > --enable-libtheora --enable-libschroedinger --enable-libopenjpeg
> > --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex
> > --enable-libass --enable-libbluray --enable-lzma --enable-gnutls
> > --enable-fontconfig --enable-libfreetype --enable-libfribidi
> > --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man
> > --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda
> > --enable-audiotoolbox --enable-videotoolbox --arch=x86_64 --enable-yasm
> > --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
> >
> >   libavutil      55. 28.100 / 55. 28.100
> >
> >   libavcodec     57. 48.101 / 57. 48.101
> >
> >   libavformat    57. 41.100 / 57. 41.100
> >
> >   libavdevice    57.  0.101 / 57.  0.101
> >
> >   libavfilter     6. 47.100 /  6. 47.100
> >
> >   libavresample   3.  0.  0 /  3.  0.  0
> >
> >   libswscale      4.  1.100 /  4.  1.100
> >
> >   libswresample   2.  1.100 /  2.  1.100
> >
> >   libpostproc    54.  0.100 / 54.  0.100
> >
> > FFmbc version 0.7.4
> >
> > Copyright (c) 2008-2015 Baptiste Coudurier and the FFmpeg developers
> >
> > Input #0, matroska,webm, from '/Volumes/RR295-KENNEDY_1/_Youtube.webm':
> >
> >   Metadata:
> >
> >     encoder         : Lavf56.1.0
> >
> >   Duration: 01:27:33.64, start: 0.000000, bitrate: 480 kb/s
> >
> >     Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv), 640x480, SAR
> 1:1
> > DAR 4:3, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
> >
> >     Stream #0:1(eng): Audio: vorbis, 44100 Hz, stereo, fltp (default)
> >
> > [avi @ 0x7fcd6c83f000] Using AVStream.codec to pass codec parameters to
> > muxers is deprecated, use AVStream.codecpar instead.
> >
> >     Last message repeated 1 times
> >
> > Output #0, avi, to 'pipe:1':
> >
> >   Metadata:
> >
> >     ISFT            : Lavf57.41.100
> >
> >     Stream #0:0(eng): Video: rawvideo (I420 / 0x30323449), yuv420p,
> 640x480
> > [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
> > (default)
> >
> >     Metadata:
> >
> >       encoder         : Lavc57.48.101 rawvideo
> >
> >     Stream #0:1(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
> > stereo, s16, 1411 kb/s (default)
> >
> >     Metadata:
> >
> >       encoder         : Lavc57.48.101 pcm_s16le
> >
> > Stream mapping:
> >
> >   Stream #0:0 -> #0:0 (vp9 (native) -> rawvideo (native))
> >
> >   Stream #0:1 -> #0:1 (vorbis (native) -> pcm_s16le (native))
> >
> > Press [q] to stop, [?] for help
> >
> > Input #0, avi, from 'pipe:0':
> >
> >   Metadata:
> >
> >     encoder: Lavf57.41.100
> >
> >   Duration: 9951:59:45.52, bitrate: N/A
> >
> >     Stream #0.0(und): Video: rawvideo, yuv420p, 640x480p, PAR 1:1 DAR
> 4:3,
> > 29.97 fps
> >
> >     Stream #0.1(und): Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411
> kb/s
> >
> > [scale @ 0x7fde69c03a00] w:640 h:480 fmt:yuv420p -> w:640 h:480
> fmt:yuv422p
> > flags:0x4 il:0
> >
> > Auto-rescaling to imx50 resolution
> >
> > [scale @ 0x7fde69c038a0] w:640 h:480 fmt:yuv420p -> w:720 h:486
> fmt:yuv422p
> > flags:0x4 il:-1
> >
> > [pad @ 0x7fde69c03cc0] w:720 h:486 -> w:720 h:512 x:0 y:26
> > color:0x108080FF[yuva]
> >
> > Output #0, mxf_d10, to '/Volumes/RR295-KENNEDY_1/_Youtube.mxf':
> >
> >   Metadata:
> >
> >     encoder: FFmbc 0.7
> >
> >     Stream #0.0(und): Video: mpeg2video, yuv422p, 720x512i tff [PAR
> 128:135
> > DAR 4:3], cbr, 50000 kb/s, 29.97 fps
> >
> >     Stream #0.1(und): Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536
> kb/s
> >
> > Stream mapping:
> >
> >   Stream #0.0 -> #0.0
> >
> >   Stream #0.1 -> #0.1
> >
> > frame=157451 fps=212 q=-0.0 Lsize=71762491kB time=01:27:33.64
> > bitrate=111899.2kbits/s speed=7.09x
> >
> > video:70852950kB audio:905022kB subtitle:0kB other streams:0kB global
> > headers:0kB muxing overhead: 0.006298%
> >
> > frame= 9202 fps= 12 q=1.0 Lsize= 2346517kB time=00:05:07.04
> > bitrate=62606.4kbits/s
> >
> > video:1874018kB audio:57571kB global headers:0kB muxing overhead
> 21.481172%
> >
> > Homicidal-Psycho-Jungle-Cat: keithreilly$
>
> Not our bug.
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