Libquicktime 1.0.0
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Libquicktime 1.0.0 Ranking & Summary
File size:
0.98 MB
Platform:
Any Platform
License:
LGPL (GNU Lesser General Public License)
Price:
Downloads:
932
Date added:
2007-04-17
Publisher:
Burkhard Plaum
Libquicktime 1.0.0 description
Libquicktime is a library for reading and writing quicktime files.
Note: libquicktime is in no way related to the original quicktime software, which can be found here. You should not expect all quicktime files created by original software to be playable by libquicktime or vice versa. You might, however, be lucky in some cases.
Furthermore, its is no longer a development goal to support as many codecs as possible. Instead we want to keep things simple and provide a library, which can create reasonable compatible Quicktime and AVI files either uncompressed (for high-end or production applications) or with decent compression codecs for end user applications.
On the decoder side, the goal is that libquicktime should at least be able to decode its own files. If other decoders can be added with a reasonable amount of labour, they will be supported as well. If you are looking for a general purpose library, which supports other formats than Quicktime/AVI and many more codecs, try gmerlin_avdecoder or ffmpeg.
Main features:
- Sourcetree upgraded with autoconf/automake/libtool and all the other stuff, people like in "standard" linux libraries.
- All 3rd party libraries (jpeg, OggVorbis) were removed to reduce download size, compilation time and code duplication on users harddisks. Instead, the sytemwide installed libaries are autodetected by the configure script.
- All codecs have been moved into dynamically loadable modules. This makes it possible to distribute closed source codecs (or codecs with an incompatible license) as separate packages.
- Unlike other quicktime libraries, we are source compatible with quicktime4linux.
- The codecs themselves are also source compatible with quicktime4linux, so porting codecs between quicktime4linux and libquicktime requires only little brain load.
- Special API extensions allow access to the codec registry. Applications can get important information about the codecs, their settable parameters etc. at runtime.
- Libquicktime 0.9.4 introduced support for handling QTVR files. QTVR is a technology to store panoramas and interactive "3D pictures" (Object Movies) in Quicktime files. For more information check out this document.
- The current implementation allows developers to write applications that display and/or create QTVR V1.0 object movies and panoramas.
Although its usable there are a few limitations:
- the newer versions of the QTVR format arent supported (yet)
- no multinode support
- no abstraction of the movie structure. That means the application writer has to take care of which frame to decode when (object movies) and how to piece them together (panoramas) (see http://developer.apple.com/technotes/tn/tn1036.html and http://developer.apple.com/technotes/tn/tn1035.html for information about that)
- no documentation
Enhancements:
- Support for text tracks. These can be either Subtitles or Chapters.
- Lots of fixes
- gettext support, German translation.
Note: libquicktime is in no way related to the original quicktime software, which can be found here. You should not expect all quicktime files created by original software to be playable by libquicktime or vice versa. You might, however, be lucky in some cases.
Furthermore, its is no longer a development goal to support as many codecs as possible. Instead we want to keep things simple and provide a library, which can create reasonable compatible Quicktime and AVI files either uncompressed (for high-end or production applications) or with decent compression codecs for end user applications.
On the decoder side, the goal is that libquicktime should at least be able to decode its own files. If other decoders can be added with a reasonable amount of labour, they will be supported as well. If you are looking for a general purpose library, which supports other formats than Quicktime/AVI and many more codecs, try gmerlin_avdecoder or ffmpeg.
Main features:
- Sourcetree upgraded with autoconf/automake/libtool and all the other stuff, people like in "standard" linux libraries.
- All 3rd party libraries (jpeg, OggVorbis) were removed to reduce download size, compilation time and code duplication on users harddisks. Instead, the sytemwide installed libaries are autodetected by the configure script.
- All codecs have been moved into dynamically loadable modules. This makes it possible to distribute closed source codecs (or codecs with an incompatible license) as separate packages.
- Unlike other quicktime libraries, we are source compatible with quicktime4linux.
- The codecs themselves are also source compatible with quicktime4linux, so porting codecs between quicktime4linux and libquicktime requires only little brain load.
- Special API extensions allow access to the codec registry. Applications can get important information about the codecs, their settable parameters etc. at runtime.
- Libquicktime 0.9.4 introduced support for handling QTVR files. QTVR is a technology to store panoramas and interactive "3D pictures" (Object Movies) in Quicktime files. For more information check out this document.
- The current implementation allows developers to write applications that display and/or create QTVR V1.0 object movies and panoramas.
Although its usable there are a few limitations:
- the newer versions of the QTVR format arent supported (yet)
- no multinode support
- no abstraction of the movie structure. That means the application writer has to take care of which frame to decode when (object movies) and how to piece them together (panoramas) (see http://developer.apple.com/technotes/tn/tn1036.html and http://developer.apple.com/technotes/tn/tn1035.html for information about that)
- no documentation
Enhancements:
- Support for text tracks. These can be either Subtitles or Chapters.
- Lots of fixes
- gettext support, German translation.
Libquicktime 1.0.0 Screenshot
Libquicktime 1.0.0 Keywords
QTVR
Libquicktime 1.0.0
reading and writing
quicktime files
Libquicktime
codecs
quicktime
files
library
writing
Libquicktime 1.0.0
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Programming
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Libquicktime 1.0.0 Copyright
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