[Ssc-dev] Sample for FFMPEG metadata attachment
Harlo Holmes
harlo.holmes at gmail.com
Tue Aug 21 15:40:22 EDT 2012
unfortunately my computer is dead; I won't be able to get to ffmpeg until
later tonight (when my new one arrives!)
will update you as soon as I can, though
On Aug 21, 2012 3:26 PM, "Hans-Christoph Steiner" <hans at guardianproject.info>
wrote:
>
> Hey Harlo,
>
> It seems that ffmpeg 0.11.1 works for the metadata embedding, and I've
> gotten the audio and video plugins to build in 0.11.1 (just about to
> test them). How do I know that the metadata stuff is working right?
> (Perhaps you could jump on IRC)
>
>
> $ ./ffmpeg -i test.mp4 \
> -attach attach.txt -metadata:s:2 mimetype=text/plain \
> -acodec copy -vcodec copy testattach.mkv
> ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
> built on Aug 21 2012 14:53:31 with gcc 4.6.3
> configuration:
> libavutil 51. 54.100 / 51. 54.100
> libavcodec 54. 23.100 / 54. 23.100
> libavformat 54. 6.100 / 54. 6.100
> libavdevice 54. 0.100 / 54. 0.100
> libavfilter 2. 77.100 / 2. 77.100
> libswscale 2. 1.100 / 2. 1.100
> libswresample 0. 15.100 / 0. 15.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf53.32.100
> Duration: 00:01:00.06, start: 0.000000, bitrate: 2364 kb/s
> Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
> 720x480, 2303 kb/s, 29.96 fps, 29.92 tbr, 359 tbn, 59.83 tbc
> Metadata:
> handler_name : VideoHandler
> Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, mono,
> s16, 61 kb/s
> Metadata:
> handler_name : SoundHandler
> ret 1, stream_spec 2
> Output #0, matroska, to 'testattach.mkv':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf54.6.100
> Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 720x480,
> q=2-31, 2303 kb/s, 29.96 fps, 1k tbn, 359 tbc
> Metadata:
> handler_name : VideoHandler
> Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, mono, 61
> kb/s
> Metadata:
> handler_name : SoundHandler
> 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= 1796 fps=0.0 q=-1.0 Lsize= 17325kB time=00:00:00.00 bitrate=
> 0.0kbits/s
> video:16855kB audio:450kB global headers:0kB muxing overhead 0.116950%
>
>
> On 08/21/2012 03:07 PM, Harlo Holmes wrote:
> > 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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