Capture still image from video/automatically assign P4A file image
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Brayton Osgood
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Capture still image from video/automatically assign P4A file image
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I'm trying to extend P4A Video to automatically generate the file
images that can be added to each video via the edit panel of any IVideoEnhanced content. Ideally, the result will be an adapter (I think) that responds to the IVideoEnhanced interface. Right now I'm running into trouble capturing an image from a video file once it's stored in Plone. I've tried calling ffmpeg as a subprocess, but I get an I/O error (see below): >>> image = subprocess.Popen('ffmpeg -i moviefile -ss 1 -an -vframes 1 -f image2 thumb%2d.jpg', shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True) >>> print image.stdout.read() FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-pp --enable-swscaler --enable- pthreads --enable-libvorbis --enable-libtheora --enable-libogg -- enable-libgsm --enable-dc1394 --disable-debug --enable-shared -- prefix=/usr libavutil version: 1d.49.3.0 libavcodec version: 1d.51.38.0 libavformat version: 1d.51.10.0 built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) moviefile: I/O error occured Usually that means that input file is truncated and/or corrupted. I've tried doing this where 'moviefile' is an <ATFile at /Plone/ Members/brayt/jumping2.mov> object, a <p4a.video _ATCTFileVideo> object (applying the IVideo interface to the ATFile), and even the binary data (passed by moviefile.getData()). Each case gives me the same error. I suspect this is because ffmpeg expects to receive certain file types, and Plone files are somehow wrapped so they aren't recognized. I guess my question may boil down to how do I access (and do something useful with) the data in a file that's not normally read by Plone? I suspect that the indexing of PDFs behaves similarly to what I'm hoping to do, but I haven't quite figured out how that works. Any help would be greatly appreciated! Thanks much, Brayton _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Tom Gross
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Re: Capture still image from video/automatically assign P4A file image
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Hi Brayton,
p4a-video uses the File-content-type, which again uses OFS.File as content-class. If you want to access the raw-data use: atfileobject.getFile().data or str(atfileobject.getFile()) If you need a file-like object, you have to do: stream = StringIO(str(atfileobject.getFile())) HTH -Tom Brayton Osgood wrote: > I'm trying to extend P4A Video to automatically generate the file images > that can be added to each video via the edit panel of any IVideoEnhanced > content. Ideally, the result will be an adapter (I think) that responds > to the IVideoEnhanced interface. > > Right now I'm running into trouble capturing an image from a video file > once it's stored in Plone. I've tried calling ffmpeg as a subprocess, > but I get an I/O error (see below): > >>>> image = subprocess.Popen('ffmpeg -i moviefile -ss 1 -an -vframes 1 > -f image2 thumb%2d.jpg', shell=True, stdin=subprocess.PIPE, > stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True) >>>> print image.stdout.read() > FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et > al. > configuration: --enable-gpl --enable-pp --enable-swscaler > --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg > -- enable-libgsm --enable-dc1394 --disable-debug --enable-shared > --prefix=/usr > libavutil version: 1d.49.3.0 > libavcodec version: 1d.51.38.0 > libavformat version: 1d.51.10.0 > built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) > moviefile: I/O error occured > Usually that means that input file is truncated and/or corrupted. > > I've tried doing this where 'moviefile' is an <ATFile at > /Plone/Members/brayt/jumping2.mov> object, a <p4a.video _ATCTFileVideo> > object (applying the IVideo interface to the ATFile), and even the > binary data (passed by moviefile.getData()). Each case gives me the same > error. > > I suspect this is because ffmpeg expects to receive certain file types, > and Plone files are somehow wrapped so they aren't recognized. I guess > my question may boil down to how do I access (and do something useful > with) the data in a file that's not normally read by Plone? I suspect > that the indexing of PDFs behaves similarly to what I'm hoping to do, > but I haven't quite figured out how that works. > > Any help would be greatly appreciated! > > Thanks much, > > Brayton _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Jean-Michel FRANCOIS
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Re: Re: Capture still image from video/automatically assign P4A file image
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Some javascript/style in this post has been disabled (why?)
Tom Gross a écrit :
To call it with subprocess :Hi Brayton, p4a-video uses the File-content-type, which again uses OFS.File as content-class. If you want to access the raw-data use: atfileobject.getFile().data or str(atfileobject.getFile()) If you need a file-like object, you have to do: stream = StringIO(str(atfileobject.getFile())) HTH -Tom Brayton Osgood wrote: - use mkstemp python module to create a temp file - write the raw data inside it - do the subprocess on that new tempfile - don't forget to delete the temp file - write the image inside your image field. -- Cordialement, Jean-Michel FRANCOIS Makina-Corpus _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Brayton Osgood
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Re: Re: Capture still image from video/automatically assign P4A file image
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Some javascript/style in this post has been disabled (why?)
Between this and IRC I've got the image capture working. Still have to write the captured image back into Plone, but I think I have that under control. Thanks for all the help, Brayton Here is the code I used (for future Googlers): context = aq_inner(file) movie_data = context.get_data() movie_id, movie_name = tempfile.mkstemp('.mov',text=False) image_id, image_name = tempfile.mkstemp('jpg', text=False) output_id, output_name = tempfile.mkstemp() wfile = open(movie_name, 'wb') wfile.write(movie_data) wfile.close() args = "ffmpeg -i %s -ss 1 -an -vframes 1 -f image2 %s" % (movie_name, image_name) p = sub.Popen(args, shell=True, stdin=sub.PIPE, stdout=output_name, stderr=sub.STDOUT) On Sep 23, 2009, at 1:38 AM, Jean-Michel FRANCOIS wrote:
_______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Espen Moe-Nilssen
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Re: Re: Capture still image from video/automatically assign P4A file image
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Some javascript/style in this post has been disabled (why?)
If I understand this right and you got this to work: 1) Add a "p4video-file" to plone 2) The first frame of the image shows as the video/image.I am pretty sure the people behind p4artists would like that code.... Espen Den 23. sep. 2009 kl. 18.19 skrev Brayton Osgood:
_______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Brayton Osgood
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Re: Re: Capture still image from video/automatically assign P4A file image
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Some javascript/style in this post has been disabled (why?)
Espen,You do understand me correctly and I have this mostly working as you describe. It works for .mov files, though I haven't been successful with a flash video yet - I still get the solid black background with play arrow. I'm going to keep working on that. I'm happy to share with p4a, though I haven't received anything but a 503 error at plone4artists.org for the last few weeks. Who should I get in touch with to share it? Thanks, Brayton On Sep 24, 2009, at 12:52 AM, Espen Moe-Nilssen wrote:
_______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Tom Gross
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Re: Capture still image from video/automatically assign P4A file image
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p4a moved to the collective: http://dev.plone.org/old/collective/browser/p4a
-Tom Brayton Osgood wrote: > Espen, > > You do understand me correctly and I have this mostly working as you > describe. It works for .mov files, though I haven't been successful with > a flash video yet - I still get the solid black background with play > arrow. I'm going to keep working on that. > > I'm happy to share with p4a, though I haven't received anything but a > 503 error at plone4artists.org for the last few weeks. Who should I get > in touch with to share it? > > Thanks, > Brayton > > On Sep 24, 2009, at 12:52 AM, Espen Moe-Nilssen wrote: > >> If I understand this right and you got this to work: >> >> 1) Add a "p4video-file" to plone >> 2) The first frame of the image shows as the video/image. >> >> I am pretty sure the people behind p4artists would like that code.... >> >> >> Espen >> >> >> >> Den 23. sep. 2009 kl. 18.19 skrev Brayton Osgood: >> >>> Between this and IRC I've got the image capture working. Still have >>> to write the captured image back into Plone, but I think I have that >>> under control. Thanks for all the help, >>> >>> Brayton >>> >>> Here is the code I used (for future Googlers): >>> >>> context = aq_inner(file) >>> movie_data = context.get_data() >>> >>> movie_id, movie_name = tempfile.mkstemp('.mov',text=False) >>> image_id, image_name = tempfile.mkstemp('jpg', text=False) >>> output_id, output_name = tempfile.mkstemp() >>> wfile = open(movie_name, 'wb') >>> wfile.write(movie_data) >>> wfile.close() >>> >>> args = "ffmpeg -i %s -ss 1 -an -vframes 1 -f image2 %s" % >>> (movie_name, image_name) >>> p = sub.Popen(args, shell=True, stdin=sub.PIPE, stdout=output_name, >>> stderr=sub.STDOUT) >>> >>> >>> On Sep 23, 2009, at 1:38 AM, Jean-Michel FRANCOIS wrote: >>> >>>> Tom Gross a écrit : >>>>> Hi Brayton, >>>>> >>>>> p4a-video uses the File-content-type, which again uses OFS.File as >>>>> content-class. If you want to access the raw-data use: >>>>> >>>>> atfileobject.getFile().data >>>>> >>>>> or >>>>> >>>>> str(atfileobject.getFile()) >>>>> >>>>> If you need a file-like object, you have to do: >>>>> >>>>> stream = StringIO(str(atfileobject.getFile())) >>>>> >>>>> HTH >>>>> -Tom >>>>> >>>>> >>>>> Brayton Osgood wrote: >>>>> >>>>>> I'm trying to extend P4A Video to automatically generate the file images >>>>>> that can be added to each video via the edit panel of any IVideoEnhanced >>>>>> content. Ideally, the result will be an adapter (I think) that responds >>>>>> to the IVideoEnhanced interface. >>>>>> >>>>>> Right now I'm running into trouble capturing an image from a video file >>>>>> once it's stored in Plone. I've tried calling ffmpeg as a subprocess, >>>>>> but I get an I/O error (see below): >>>>>> >>>>>> >>>>>>>>> image = subprocess.Popen('ffmpeg -i moviefile -ss 1 -an -vframes 1 >>>>>>>>> >>>>>> -f image2 thumb%2d.jpg', shell=True, stdin=subprocess.PIPE, >>>>>> stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True) >>>>>> >>>>>>>>> print image.stdout.read() >>>>>>>>> >>>>>> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et >>>>>> al. >>>>>> configuration: --enable-gpl --enable-pp --enable-swscaler >>>>>> --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg >>>>>> -- enable-libgsm --enable-dc1394 --disable-debug --enable-shared >>>>>> --prefix=/usr >>>>>> libavutil version: 1d.49.3.0 >>>>>> libavcodec version: 1d.51.38.0 >>>>>> libavformat version: 1d.51.10.0 >>>>>> built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) >>>>>> moviefile: I/O error occured >>>>>> Usually that means that input file is truncated and/or corrupted. >>>>>> >>>>>> I've tried doing this where 'moviefile' is an <ATFile at >>>>>> /Plone/Members/brayt/jumping2.mov> object, a <p4a.video _ATCTFileVideo> >>>>>> object (applying the IVideo interface to the ATFile), and even the >>>>>> binary data (passed by moviefile.getData()). Each case gives me the same >>>>>> error. >>>>>> >>>>>> I suspect this is because ffmpeg expects to receive certain file types, >>>>>> and Plone files are somehow wrapped so they aren't recognized. I guess >>>>>> my question may boil down to how do I access (and do something useful >>>>>> with) the data in a file that's not normally read by Plone? I suspect >>>>>> that the indexing of PDFs behaves similarly to what I'm hoping to do, >>>>>> but I haven't quite figured out how that works. >>>>>> >>>>>> Any help would be greatly appreciated! >>>>>> >>>>>> Thanks much, >>>>>> >>>>>> Brayton >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Product-Developers mailing list >>>>> [hidden email] >>>>> http://lists.plone.org/mailman/listinfo/product-developers >>>>> >>>> To call it with subprocess : >>>> - use mkstemp python module to create a temp file >>>> - write the raw data inside it >>>> - do the subprocess on that new tempfile >>>> - don't forget to delete the temp file >>>> - write the image inside your image field. >>>> >>>> -- >>>> Cordialement, >>>> Jean-Michel FRANCOIS >>>> Makina-Corpus >>> _______________________________________________ >>> Product-Developers mailing list >>> [hidden email] >>> <mailto:[hidden email]> >>> http://lists.plone.org/mailman/listinfo/product-developers >> > > > ------------------------------------------------------------------------ > > _______________________________________________ > Product-Developers mailing list > [hidden email] > http://lists.plone.org/mailman/listinfo/product-developers _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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JonStahl
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Re: Re: Capture still image from video/automatically assign P4A file image
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And, for the record, Nate Aune ([hidden email]), is the founder of
the p4a project. :-) :jon On Fri, Sep 25, 2009 at 12:13 AM, Tom Gross <[hidden email]> wrote: > p4a moved to the collective: http://dev.plone.org/old/collective/browser/p4a > > -Tom > > Brayton Osgood wrote: >> Espen, >> >> You do understand me correctly and I have this mostly working as you >> describe. It works for .mov files, though I haven't been successful with >> a flash video yet - I still get the solid black background with play >> arrow. I'm going to keep working on that. >> >> I'm happy to share with p4a, though I haven't received anything but a >> 503 error at plone4artists.org for the last few weeks. Who should I get >> in touch with to share it? >> >> Thanks, >> Brayton >> >> On Sep 24, 2009, at 12:52 AM, Espen Moe-Nilssen wrote: >> >>> If I understand this right and you got this to work: >>> >>> 1) Add a "p4video-file" to plone >>> 2) The first frame of the image shows as the video/image. >>> >>> I am pretty sure the people behind p4artists would like that code.... >>> >>> >>> Espen >>> >>> >>> >>> Den 23. sep. 2009 kl. 18.19 skrev Brayton Osgood: >>> >>>> Between this and IRC I've got the image capture working. Still have >>>> to write the captured image back into Plone, but I think I have that >>>> under control. Thanks for all the help, >>>> >>>> Brayton >>>> >>>> Here is the code I used (for future Googlers): >>>> >>>> context = aq_inner(file) >>>> movie_data = context.get_data() >>>> >>>> movie_id, movie_name = tempfile.mkstemp('.mov',text=False) >>>> image_id, image_name = tempfile.mkstemp('jpg', text=False) >>>> output_id, output_name = tempfile.mkstemp() >>>> wfile = open(movie_name, 'wb') >>>> wfile.write(movie_data) >>>> wfile.close() >>>> >>>> args = "ffmpeg -i %s -ss 1 -an -vframes 1 -f image2 %s" % >>>> (movie_name, image_name) >>>> p = sub.Popen(args, shell=True, stdin=sub.PIPE, stdout=output_name, >>>> stderr=sub.STDOUT) >>>> >>>> >>>> On Sep 23, 2009, at 1:38 AM, Jean-Michel FRANCOIS wrote: >>>> >>>>> Tom Gross a écrit : >>>>>> Hi Brayton, >>>>>> >>>>>> p4a-video uses the File-content-type, which again uses OFS.File as >>>>>> content-class. If you want to access the raw-data use: >>>>>> >>>>>> atfileobject.getFile().data >>>>>> >>>>>> or >>>>>> >>>>>> str(atfileobject.getFile()) >>>>>> >>>>>> If you need a file-like object, you have to do: >>>>>> >>>>>> stream = StringIO(str(atfileobject.getFile())) >>>>>> >>>>>> HTH >>>>>> -Tom >>>>>> >>>>>> >>>>>> Brayton Osgood wrote: >>>>>> >>>>>>> I'm trying to extend P4A Video to automatically generate the file images >>>>>>> that can be added to each video via the edit panel of any IVideoEnhanced >>>>>>> content. Ideally, the result will be an adapter (I think) that responds >>>>>>> to the IVideoEnhanced interface. >>>>>>> >>>>>>> Right now I'm running into trouble capturing an image from a video file >>>>>>> once it's stored in Plone. I've tried calling ffmpeg as a subprocess, >>>>>>> but I get an I/O error (see below): >>>>>>> >>>>>>> >>>>>>>>>> image = subprocess.Popen('ffmpeg -i moviefile -ss 1 -an -vframes 1 >>>>>>>>>> >>>>>>> -f image2 thumb%2d.jpg', shell=True, stdin=subprocess.PIPE, >>>>>>> stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True) >>>>>>> >>>>>>>>>> print image.stdout.read() >>>>>>>>>> >>>>>>> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et >>>>>>> al. >>>>>>> configuration: --enable-gpl --enable-pp --enable-swscaler >>>>>>> --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg >>>>>>> -- enable-libgsm --enable-dc1394 --disable-debug --enable-shared >>>>>>> --prefix=/usr >>>>>>> libavutil version: 1d.49.3.0 >>>>>>> libavcodec version: 1d.51.38.0 >>>>>>> libavformat version: 1d.51.10.0 >>>>>>> built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) >>>>>>> moviefile: I/O error occured >>>>>>> Usually that means that input file is truncated and/or corrupted. >>>>>>> >>>>>>> I've tried doing this where 'moviefile' is an <ATFile at >>>>>>> /Plone/Members/brayt/jumping2.mov> object, a <p4a.video _ATCTFileVideo> >>>>>>> object (applying the IVideo interface to the ATFile), and even the >>>>>>> binary data (passed by moviefile.getData()). Each case gives me the same >>>>>>> error. >>>>>>> >>>>>>> I suspect this is because ffmpeg expects to receive certain file types, >>>>>>> and Plone files are somehow wrapped so they aren't recognized. I guess >>>>>>> my question may boil down to how do I access (and do something useful >>>>>>> with) the data in a file that's not normally read by Plone? I suspect >>>>>>> that the indexing of PDFs behaves similarly to what I'm hoping to do, >>>>>>> but I haven't quite figured out how that works. >>>>>>> >>>>>>> Any help would be greatly appreciated! >>>>>>> >>>>>>> Thanks much, >>>>>>> >>>>>>> Brayton >>>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Product-Developers mailing list >>>>>> [hidden email] >>>>>> http://lists.plone.org/mailman/listinfo/product-developers >>>>>> >>>>> To call it with subprocess : >>>>> - use mkstemp python module to create a temp file >>>>> - write the raw data inside it >>>>> - do the subprocess on that new tempfile >>>>> - don't forget to delete the temp file >>>>> - write the image inside your image field. >>>>> >>>>> -- >>>>> Cordialement, >>>>> Jean-Michel FRANCOIS >>>>> Makina-Corpus >>>> _______________________________________________ >>>> Product-Developers mailing list >>>> [hidden email] >>>> <mailto:[hidden email]> >>>> http://lists.plone.org/mailman/listinfo/product-developers >>> >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Product-Developers mailing list >> [hidden email] >> http://lists.plone.org/mailman/listinfo/product-developers > > > _______________________________________________ > Product-Developers mailing list > [hidden email] > http://lists.plone.org/mailman/listinfo/product-developers > _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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Nate Aune
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Re: Re: Capture still image from video/automatically assign P4A file image
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If you go to plone4artists.org now it will redirect you to dev.plone4artists.org
. Brayton- it would be great if you could contribute your code to a branch in the collective and then we will review it at the video sprint in a few weeks in Budapest. Nate -- Nate Aune - [hidden email] http://www.jazkarta.com Sent from my iPhone On Oct 2, 2009, at 3:43 PM, Jon Stahl <[hidden email]> wrote: > And, for the record, Nate Aune ([hidden email]), is the founder of > the p4a project. :-) > > :jon > > On Fri, Sep 25, 2009 at 12:13 AM, Tom Gross <[hidden email]> > wrote: >> p4a moved to the collective: http://dev.plone.org/old/collective/browser/p4a >> >> -Tom >> >> Brayton Osgood wrote: >>> Espen, >>> >>> You do understand me correctly and I have this mostly working as you >>> describe. It works for .mov files, though I haven't been >>> successful with >>> a flash video yet - I still get the solid black background with play >>> arrow. I'm going to keep working on that. >>> >>> I'm happy to share with p4a, though I haven't received anything >>> but a >>> 503 error at plone4artists.org for the last few weeks. Who should >>> I get >>> in touch with to share it? >>> >>> Thanks, >>> Brayton >>> >>> On Sep 24, 2009, at 12:52 AM, Espen Moe-Nilssen wrote: >>> >>>> If I understand this right and you got this to work: >>>> >>>> 1) Add a "p4video-file" to plone >>>> 2) The first frame of the image shows as the video/image. >>>> >>>> I am pretty sure the people behind p4artists would like that >>>> code.... >>>> >>>> >>>> Espen >>>> >>>> >>>> >>>> Den 23. sep. 2009 kl. 18.19 skrev Brayton Osgood: >>>> >>>>> Between this and IRC I've got the image capture working. Still >>>>> have >>>>> to write the captured image back into Plone, but I think I have >>>>> that >>>>> under control. Thanks for all the help, >>>>> >>>>> Brayton >>>>> >>>>> Here is the code I used (for future Googlers): >>>>> >>>>> context = aq_inner(file) >>>>> movie_data = context.get_data() >>>>> >>>>> movie_id, movie_name = tempfile.mkstemp('.mov',text=False) >>>>> image_id, image_name = tempfile.mkstemp('jpg', text=False) >>>>> output_id, output_name = tempfile.mkstemp() >>>>> wfile = open(movie_name, 'wb') >>>>> wfile.write(movie_data) >>>>> wfile.close() >>>>> >>>>> args = "ffmpeg -i %s -ss 1 -an -vframes 1 -f image2 %s" % >>>>> (movie_name, image_name) >>>>> p = sub.Popen(args, shell=True, stdin=sub.PIPE, >>>>> stdout=output_name, >>>>> stderr=sub.STDOUT) >>>>> >>>>> >>>>> On Sep 23, 2009, at 1:38 AM, Jean-Michel FRANCOIS wrote: >>>>> >>>>>> Tom Gross a écrit : >>>>>>> Hi Brayton, >>>>>>> >>>>>>> p4a-video uses the File-content-type, which again uses >>>>>>> OFS.File as >>>>>>> content-class. If you want to access the raw-data use: >>>>>>> >>>>>>> atfileobject.getFile().data >>>>>>> >>>>>>> or >>>>>>> >>>>>>> str(atfileobject.getFile()) >>>>>>> >>>>>>> If you need a file-like object, you have to do: >>>>>>> >>>>>>> stream = StringIO(str(atfileobject.getFile())) >>>>>>> >>>>>>> HTH >>>>>>> -Tom >>>>>>> >>>>>>> >>>>>>> Brayton Osgood wrote: >>>>>>> >>>>>>>> I'm trying to extend P4A Video to automatically generate the >>>>>>>> file images >>>>>>>> that can be added to each video via the edit panel of any >>>>>>>> IVideoEnhanced >>>>>>>> content. Ideally, the result will be an adapter (I think) >>>>>>>> that responds >>>>>>>> to the IVideoEnhanced interface. >>>>>>>> >>>>>>>> Right now I'm running into trouble capturing an image from a >>>>>>>> video file >>>>>>>> once it's stored in Plone. I've tried calling ffmpeg as a >>>>>>>> subprocess, >>>>>>>> but I get an I/O error (see below): >>>>>>>> >>>>>>>> >>>>>>>>>>> image = subprocess.Popen('ffmpeg -i moviefile -ss 1 -an - >>>>>>>>>>> vframes 1 >>>>>>>>>>> >>>>>>>> -f image2 thumb%2d.jpg', shell=True, stdin=subprocess.PIPE, >>>>>>>> stdout=subprocess.PIPE, stderr=subprocess.STDOUT, >>>>>>>> close_fds=True) >>>>>>>> >>>>>>>>>>> print image.stdout.read() >>>>>>>>>>> >>>>>>>> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice >>>>>>>> Bellard, et >>>>>>>> al. >>>>>>>> configuration: --enable-gpl --enable-pp --enable-swscaler >>>>>>>> --enable-pthreads --enable-libvorbis --enable-libtheora -- >>>>>>>> enable-libogg >>>>>>>> -- enable-libgsm --enable-dc1394 --disable-debug --enable- >>>>>>>> shared >>>>>>>> --prefix=/usr >>>>>>>> libavutil version: 1d.49.3.0 >>>>>>>> libavcodec version: 1d.51.38.0 >>>>>>>> libavformat version: 1d.51.10.0 >>>>>>>> built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu >>>>>>>> 4.2.4-1ubuntu3) >>>>>>>> moviefile: I/O error occured >>>>>>>> Usually that means that input file is truncated and/or >>>>>>>> corrupted. >>>>>>>> >>>>>>>> I've tried doing this where 'moviefile' is an <ATFile at >>>>>>>> /Plone/Members/brayt/jumping2.mov> object, a <p4a.video >>>>>>>> _ATCTFileVideo> >>>>>>>> object (applying the IVideo interface to the ATFile), and >>>>>>>> even the >>>>>>>> binary data (passed by moviefile.getData()). Each case gives >>>>>>>> me the same >>>>>>>> error. >>>>>>>> >>>>>>>> I suspect this is because ffmpeg expects to receive certain >>>>>>>> file types, >>>>>>>> and Plone files are somehow wrapped so they aren't >>>>>>>> recognized. I guess >>>>>>>> my question may boil down to how do I access (and do >>>>>>>> something useful >>>>>>>> with) the data in a file that's not normally read by Plone? I >>>>>>>> suspect >>>>>>>> that the indexing of PDFs behaves similarly to what I'm >>>>>>>> hoping to do, >>>>>>>> but I haven't quite figured out how that works. >>>>>>>> >>>>>>>> Any help would be greatly appreciated! >>>>>>>> >>>>>>>> Thanks much, >>>>>>>> >>>>>>>> Brayton >>>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Product-Developers mailing list >>>>>>> [hidden email] >>>>>>> http://lists.plone.org/mailman/listinfo/product-developers >>>>>>> >>>>>> To call it with subprocess : >>>>>> - use mkstemp python module to create a temp file >>>>>> - write the raw data inside it >>>>>> - do the subprocess on that new tempfile >>>>>> - don't forget to delete the temp file >>>>>> - write the image inside your image field. >>>>>> >>>>>> -- >>>>>> Cordialement, >>>>>> Jean-Michel FRANCOIS >>>>>> Makina-Corpus >>>>> _______________________________________________ >>>>> Product-Developers mailing list >>>>> [hidden email] >>>>> <mailto:[hidden email]> >>>>> http://lists.plone.org/mailman/listinfo/product-developers >>>> >>> >>> >>> --- >>> --- >>> ------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Product-Developers mailing list >>> [hidden email] >>> http://lists.plone.org/mailman/listinfo/product-developers >> >> >> _______________________________________________ >> Product-Developers mailing list >> [hidden email] >> http://lists.plone.org/mailman/listinfo/product-developers >> _______________________________________________ Product-Developers mailing list [hidden email] http://lists.plone.org/mailman/listinfo/product-developers |
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