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0491a2a07a
Add flags field to Writer, and define the WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS flag which forces the display of optional fields, for example non-available or invalid fields. Also set the flag in the default writer. This change is required as for some writers it is preferable to show all fields (for example for avoiding a variable number of fields in CSV output), while for other formats (e.g. JSON, XML) it is better to leave invalid/unavailable fields unspecified and thus simplify the parsing stage on the deserializer side.
FFmpeg README ------------- 1) Documentation ---------------- * Read the documentation in the doc/ directory. 2) Licensing ------------ * See the LICENSE file.