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SubIFDs that were part of more than single-sized "SubIFDs" tags were being ignored due to existing code ignoring that case. This patch makes is so the first entry is read, which is not ideal but enough for some DNG images present in the wild to be decodeable More specifically, the first SubIFD which we would process with this patch is the main image and the second one is a second thumbnail, which is not as important to decode. In DNG images with the .tiff extension, it solves the issue where the TIFF thumbnail in IFD 0 was incorrectly parsed (related confusion: [1]). Embedded thumbnails for DNG images can still be decoded with the "-thumbnail" option. Related to ticket: https://trac.ffmpeg.org/ticket/4364 [1]: https://superuser.com/questions/546879/creating-video-from-dng-images-with-ffmpeg Signed-off-by: Nick Renieris <velocityra@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.