[Ssc-dev] Sample for FFMPEG metadata attachment

[Harlo Holmes]

Nope; redaction isn't needed for the IBA version of informacam.

On Tue, Aug 21, 2012 at 2:36 PM, Hans-Christoph Steiner <
hans at guardianproject.info> wrote:

>
> I was just working with ffmpeg master and the bad news is that neither
> the audio nor video redaction plugin is close to compiling for
> ffmpeg/master.  It seems they've changed the plugin API quite a bit
> between 0.10.4 and master.
>
> IIRC, Harlo, for this round, you don't need redaction for InformaCam?
>
> .hc
>
> On 08/16/2012 04:35 PM, Harlo Holmes wrote:
> > Hi Hans,
> >
> > As requested, here's the output from FFMPEG as I create a MKV from a
> source
> > video with an  arbitrary file attached:
> >
> > $ ffmpeg -i testvid.mp4 -attach attach.txt -metadata:s:2
> > mimetype=text/plain -acodec copy -vcodec copy testattach.mkv
> >
> > ffmpeg version N-42045-g439e32f Copyright (c) 2000-2012 the FFmpeg
> > developers
> >   built on Jun 29 2012 14:57:14 with llvm_gcc 4.2.1 (Based on Apple Inc.
> > build 5658) (LLVM build 2336.1.00)
> >   configuration: --enable-libmp3lame --enable-shared --disable-mmx
> > --arch=x86_64
> >   libavutil      51. 63.100 / 51. 63.100
> >   libavcodec     54. 31.100 / 54. 31.100
> >   libavformat    54. 14.100 / 54. 14.100
> >   libavdevice    54.  0.100 / 54.  0.100
> >   libavfilter     3.  0.100 /  3.  0.100
> >   libswscale      2.  1.100 /  2.  1.100
> >   libswresample   0. 15.100 /  0. 15.100
> > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'testvid.mp4':
> >   Metadata:
> >     major_brand     : isom
> >     minor_version   : 0
> >     compatible_brands: isom3gp4
> >     creation_time   : 1946-02-27 18:15:01
> >   Duration: 00:00:13.84, start: 0.000000, bitrate: 8348 kb/s
> >     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661),
> yuv420p,
> > 1280x720, 8104 kb/s, SAR 65536:65536 DAR 16:9, 30 fps, 30 tbr, 90k tbn,
> > 180k tbc
> >     Metadata:
> >       rotate          : 90
> >       creation_time   : 1946-02-27 18:15:01
> >       handler_name    : VideoHandle
> >     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono,
> s16,
> > 96 kb/s
> >     Metadata:
> >       creation_time   : 1946-02-27 18:15:01
> >       handler_name    : SoundHandle
> > File 'testattach.mkv' already exists. Overwrite ? [y/N] y
> > Output #0, matroska, to 'testattach.mkv':
> >   Metadata:
> >     major_brand     : isom
> >     minor_version   : 0
> >     compatible_brands: isom3gp4
> >     encoder         : Lavf54.14.100
> >     Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720
> > [SAR 65536:65536 DAR 16:9], q=2-31, 8104 kb/s, 30 fps, 1k tbn, 90k tbc
> >     Metadata:
> >       rotate          : 90
> >       creation_time   : 1946-02-27 18:15:01
> >       handler_name    : VideoHandle
> >     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, 96
> > kb/s
> >     Metadata:
> >       creation_time   : 1946-02-27 18:15:01
> >       handler_name    : SoundHandle
> >     Stream #0:2: Attachment: none
> >     Metadata:
> >       filename        : attach.txt
> >       mimetype        : text/plain
> > Stream mapping:
> >   Stream #0:0 -> #0:0 (copy)
> >   Stream #0:1 -> #0:1 (copy)
> >   File attach.txt -> Stream #0:2
> > Press [q] to stop, [?] for help
> > frame=  411 fps=0.0 q=-1.0 Lsize=   13723kB time=00:00:00.00 bitrate=
> > 0.0kbits/s
> > video:13551kB audio:162kB subtitle:0 global headers:0kB muxing overhead
> > 0.067430%
> >
> >
> > Thanks,
> > Harlo
> >
> > ++++++++++++++++++++++++++
> > Research Fellow, Head of Metadata
> > The Guardian Project <https://guardianproject.info>
> >
> > pgp: 0xA4469630
> > twitter: @harlo
> >
> >
> >
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