Hi Hans, this is a lighter version from sound-001.tex from your test samples: \definerenderingwindow [example] [width=0pt,height=0pt,frame=off] \setupinteraction[state=start] \useexternalrendering [mysound] [audio/x-mp3] % audio/x-mp3 [sound.mp3] %~ [embed] \definereference [StartSoundTrack] [StartRendering{mysound}] \definereference [StopSoundTrack] [StopRendering{mysound}] \definelayer[resources][width=\paperwidth,height=\paperheight] \setupbackgrounds[page][background=resources] \setupbodyfont[100pt] \starttext\bf\ss \setlayer[resources]{\placerenderingwindow[example][mysound]} \startTEXpage \button{start}[StartSoundTrack] \button{stop}[StopSoundTrack] \stopTEXpage \stoptext As reported before (https://mailman.ntg.nl/pipermail/ntg-context/2018/092327.html), sound is played fine when not embedded. But it won’t play embedded files. Without embedded sound, the relevant /Filespec reads: 7 0 obj << /F (sound.mp3) /Type /Filespec >> endobj With an embedded sound, /Filespec and /EmbeddedFile read: 7 0 obj << /Subtype /audio#2Fx-mp3 /Type /EmbeddedFile /Length 49006 >> stream endstream endobj 8 0 obj << /EF << /F 7 0 R >> /F (sound.mp3) /Type /Filespec /UF (\376\377\000s\000o\000u\000n\000d\000.\000m\000p\0003) >> endobj 10 0 obj << /EF 8 0 R /F (sound.mp3) /Type /Filespec >> endobj I don’t know why there are two /Filespec objects, since they are duplicated. In any case, the value for the /EF entry has to be a dictionary that points to the /EmbeddedFile (such as in object 8). I’m afraid that the code that generates the second /Filespec object (object 10 in the code above) is wrong. I attach a modified file fixing the issue from the PDF document generated by ConTeXt. I hope this help to fix the issue. Many thanks for your help, Pablo -- http://www.ousia.tk
On 10/9/2018 7:19 PM, Pablo Rodriguez wrote:
Hi Hans,
this is a lighter version from sound-001.tex from your test samples:
media in pdf are sort of braindead and it's hard to get something that doesn't have side effects (attachment vs external vs ...) .. when i can't hear sound with internal files (no matter how we wrap it i cannot really test something) ... (it is tempting to just remove the code but as part of working on the interaction manual i keep it for now) the flash dependent media are even worse ... it is supported (as usual) but not future proof (it baffles me that the original simple movie and sound annotations are sort of gone: they delegated the rendering so no pain for acrobat and no gain in obsoleting them)
\definerenderingwindow [example] [width=0pt,height=0pt,frame=off]
\setupinteraction[state=start]
\useexternalrendering [mysound] [audio/x-mp3] % audio/x-mp3 [sound.mp3] %~ [embed]
\definereference [StartSoundTrack] [StartRendering{mysound}] \definereference [StopSoundTrack] [StopRendering{mysound}]
\definelayer[resources][width=\paperwidth,height=\paperheight]
\setupbackgrounds[page][background=resources]
\setupbodyfont[100pt]
\starttext\bf\ss
\setlayer[resources]{\placerenderingwindow[example][mysound]}
\startTEXpage \button{start}[StartSoundTrack] \button{stop}[StopSoundTrack] \stopTEXpage
\stoptext
As reported before (https://mailman.ntg.nl/pipermail/ntg-context/2018/092327.html), sound is played fine when not embedded. But it won’t play embedded files.
Without embedded sound, the relevant /Filespec reads:
7 0 obj << /F (sound.mp3) /Type /Filespec >> endobj
With an embedded sound, /Filespec and /EmbeddedFile read:
7 0 obj << /Subtype /audio#2Fx-mp3 /Type /EmbeddedFile /Length 49006 >> stream endstream endobj
8 0 obj << /EF << /F 7 0 R >> /F (sound.mp3) /Type /Filespec /UF (\376\377\000s\000o\000u\000n\000d\000.\000m\000p\0003) >> endobj
10 0 obj << /EF 8 0 R /F (sound.mp3) /Type /Filespec >> endobj
I don’t know why there are two /Filespec objects, since they are duplicated.
In any case, the value for the /EF entry has to be a dictionary that points to the /EmbeddedFile (such as in object 8).
I’m afraid that the code that generates the second /Filespec object (object 10 in the code above) is wrong.
I attach a modified file fixing the issue from the PDF document generated by ConTeXt.
I hope this help to fix the issue.
Many thanks for your help,
Pablo
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On Tue, 9 Oct 2018 19:49:44 +0200
Hans Hagen
media in pdf are sort of braindead and it's hard to get something that doesn't have side effects (attachment vs external vs ...) .. when i can't hear sound with internal files (no matter how we wrap it i cannot really test something) ... (it is tempting to just remove the code but as part of working on the interaction manual i keep it for now)
the flash dependent media are even worse ... it is supported (as usual) but not future proof
(it baffles me that the original simple movie and sound annotations are sort of gone: they delegated the rendering so no pain for acrobat and no gain in obsoleting them)
Embedded media is an illness inherited from PowerPointers. In my experience as a seminar presentation organizer, this messes-up 9 times out of 10 (unless the presenter is using his or her own laptop, and even then they cannot get it connected to the projector maybe 20% of the time...). Things are getting a bit better now on the presentation front, however. (PowerPointers still get funny font stuff from time to time). Why not, rather, depend on a link opening an external file, distributed with the pdf, letting the system figure out how this is to be done? In my experience this works more generally. Alan
On Tue, 9 Oct 2018 19:49:44 +0200 Hans Hagen wrote: [...] Embedded media is an illness inherited from PowerPointers. In my experience as a seminar presentation organizer, this messes-up 9 times out of 10 (unless the presenter is using his or her own laptop, and even then they cannot get it connected to the projector maybe 20% of the time...). Things are getting a bit better now on the presentation front, however. (PowerPointers still get funny font stuff from time to time). My case is rather the opposite. I want to add the sound, so that the
On 10/9/18 8:24 PM, Alan Braslau wrote: presentation is really played: http://www.free-culture.tk/.
Why not, rather, depend on a link opening an external file, distributed with the pdf, letting the system figure out how this is to be done? In my experience this works more generally.
The method mentioned above can only work with a script that “plays” the presentation. Pablo -- http://www.ousia.tk
participants (3)
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Alan Braslau -
Hans Hagen -
Pablo Rodriguez