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favicon.ico: dev.exiv2.org/issues/643 - Feature #643: Extract metadata.

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site title: Feature #643: Extract metadata from MOV (Quicktime) files - Exiv2

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Text of the page (random words):
feature 643 extract metadata from mov quicktime files exiv2 project general profile sign in home projects help search exiv2 all projects exiv2 overview activity roadmap issues news wiki forums repository issues view all issues summary feature 643 extract metadata from mov quicktime files added by casper roubos over 12 years ago updated over 4 years ago status new priority normal assignee category video target version 1 0 start date 01 aug 2009 due date done 0 estimated time description hi is there already spoken of a feature that also can also read iptc metadata from quicktime movies regards ikke_nl files dsc_5363_metadata mov 3 44 mb dsc_5363_metadata mov adds xmp data to the original file ben touchette 28 feb 2017 20 13 related issues related to exiv2 bug 1068 video code umbrella closed 26 apr 2015 actions related to is duplicate of has duplicate blocks blocked by precedes follows copied to copied from issue delay days cancel history 1 updated by steve wright almost 12 years ago old mac os os x user here currently enjoying a forced sojourn in windows xp pro and ubuntu not a developer or coder by any stretch however i doubt there s a discrete layer or block in any or every mov file from which meta information could be extracted and even if there was it s still a question of coming up with a reliable way to get at it from what i remember it was easier to add or retrieve tags from the mp4 format than mov the routine excuse that was always given was that early on in the course of its development apple followed more than one track with the mov format so that in the end up several different methods of introducing relevant information to the file were developed including the hint format of mov later revived for quick time streaming server each one equally useful to content creators if not to the home user and then they decided to add licensed proprietary codecs which meant puzzling out the best method of doing it the same way with and sometimes in spite of new and different tools to work with apple mpeg 4 being an mpeg 1 layer 2 derivative was newer and coders approached it from that perspective with decidedly and understandably better results mov is a jungle of code and we ll let you have this but you have to pay for that kind of thinking on both apple s part and that of the licensors lessors of the other codecs s 2 updated by robin mills about 6 years ago category changed from iptc to image format target version set to 1 0 3 updated by alan pater about 6 years ago do quicktime files contain iptc metadata a superficial look on my part seems to show that they contain their own format perhaps we need a exif quicktime set of tags similiar to makernotes rather then iptc or xmp 4 updated by alan pater about 6 years ago category changed from image format to video 5 updated by robin mills about 6 years ago alan there s code in the video codebase 754 rmills rmillsmbp gnu exiv2 trunk find name grep quick include exiv2 quicktimevideo hpp src quicktimevideo cpp 755 rmills rmillsmbp gnu exiv2 trunk and in the test files 764 rmills rmillsmbp gnu exiv2 testdata trunk find grep quick video video quicktime mp4 we re going to have to revisit and spend time on the video code for the moment i ve gone over all the issues in redmine and allocated them to one of three target versions v0 26 i hope we can ship that in spring 2016 v1 0 eventually review most of those are ancient things and can be closed or moved to v0 26 or v1 0 when v0 26 is ready the issue list should be around 30 items all in 1 0 and we can decide what to target for v0 27 i hope we ll find a volunteer to work on the video code in v0 27 i m rather worried about loosing niels i ve never understood the makernote and niels has dealt so effectively with that 6 updated by robin mills about 6 years ago xmp can be stored in a quicktime mov file it s described in adobe s spec xmpspecificationpart3 pdf p29 we have a qt test file exiv2 testdata trunk video video quicktime mp4 however i don t believe it contains xmp i believe abhinav s focus in the video read project gsoc2012 was to read native metadata in video file duration resolution and that kind of thing he probably assumed not unreasonably that xmp should be handled by the existing xmpsdk mahesh followed abhinav s lead and added write capability for the same native data mahesh added some very good documents about the structure of riff and matrovska files to the wiki http dev exiv2 org projects exiv2 wiki perhaps i can use those document to implement ps printstructure and px for video files if nothing else those will be useful tools before revisiting the native video code 941 is to upgrade to the latest xmpsdk and may provide video xmp support without additional effort by team exiv2 that might be available for v0 26 for the moment native video support is a build option and declared experimental i can t honestly seeing it getting attention in v0 26 and that s why i ve set the target version to 1 0 7 updated by alan pater about 6 years ago yes i have seen that quicktime mov files can contain xmp but the samples i have don t seem to contain an xmp block the specific mov file i am looking at is http dev exiv2 org attachments 374 dsc_5363 mov what confuses me is that exiv2 is still reporting the metadata in that file as xmp video properties even when the file does not contain any native xmp that i can see am i looking in the wrong place 8 updated by robin mills about 6 years ago i don t believe that file has xmp embedded my stupid way of looking is to use strings and grep it for adobe 688 rmills rmillsmbp gnu exiv2 trunk test data strings downloads dsc_5363 mov grep adobe 689 rmills rmillsmbp gnu exiv2 trunk test data here s an example where i find an xml block i think you helped me with 922a 686 rmills rmillsmbp gnu exiv2 trunk test data strings exiv2 bug922a jpg grep adobe http ns adobe com xap 1 0 id w5m0mpcehihzreszntczkc9d x xmpmeta xmlns x adobe ns meta x xmptk xmp core 4 4 0 exiv2 rdf rdf xmlns rdf http www w3 org 1999 02 22 rdf syntax ns rdf description rdf about xmlns xmp http ns adobe com xap 1 0 xmlns dc http purl org dc elements 1 1 xmp rating 0 xmp modifydate 2015 02 13t20 46 51 06 00 dc title rdf alt rdf li xml lang x default the rest drink soda rdf li rdf li xml lang en gb the brits are in the bar rdf li rdf li xml lang de de the germans like beer rdf li rdf alt dc title rdf description rdf rdf x xmpmeta xpacket end w 687 rmills rmillsmbp gnu exiv2 trunk test data and pretty printing it with px yields exiv2 px exiv2 bug922a jpg xmllint pretty 1 xml version 1 0 xpacket begin id w5m0mpcehihzreszntczkc9d x xmpmeta xmlns x adobe ns meta x xmptk xmp core 4 4 0 exiv2 rdf rdf xmlns rdf http www w3 org 1999 02 22 rdf syntax ns rdf description xmlns xmp http ns adobe com xap 1 0 xmlns dc http purl org dc elements 1 1 rdf about xmp rating 0 xmp modifydate 2015 02 13t20 46 51 06 00 dc title rdf alt rdf li xml lang x default the rest drink soda rdf li rdf li xml lang en gb the brits are in the bar rdf li rdf li xml lang de de the germans like beer rdf li rdf alt dc title rdf description rdf rdf x xmpmeta xpacket end w 688 rmills rmillsmbp gnu exiv2 trunk test data if you can find a mov file with embedded xmp can you add it to this issue report and i ll use it when i implement ps for quicktime files and of course for matravoska riff and asf if you find them rw r r 1 rmills staff 66k 28 jun 13 00 quicktimevideo cpp rw r r 1 rmills staff 48k 28 jun 13 00 riffvideo cpp rw r r 1 rmills staff 30k 28 jun 13 00 asfvideo cpp rw r r 1 rmills staff 35k 28 jun 13 00 matroskavideo cpp and it s quite possible that our video xmp support is working ok already i can t say anything about reporting xmp video anything a bug maybe i don t know i ve never thought about this 9 updated by ben touchette over 4 years ago file dsc_5363_metadata mov dsc_5363_metadata mov added updated the dsc_5363 mov file to add xmp metadata also available in atom pdf loading powered by redmine 2006 2018 jean philippe lang
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