[Ssc-dev] Sample for FFMPEG metadata attachment

[Hans-Christoph Steiner]

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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