Remove graphparser.h header, move AVFilterInOut and
[libav.git] / doc / APIchanges
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1Never assume the API of libav* to be stable unless at least 1 week has passed since
2the last major version increase.
3The last version increases were:
4libavcodec: ?
a33e0365 5libavcore: 2010-07-21
06d19718 6libavdevice: ?
c3b27a3d 7libavfilter: 2009-10-18
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8libavformat: ?
9libpostproc: ?
10libswscale: ?
11libavutil: 2009-03-08
12
13
14API changes, most recent first:
15
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162010-11-07 - r25705 - lavfi 1.58.0 - avfiltergraph.h
17 Remove graphparser.h header, move AVFilterInOut and
18 avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
19
3fd3eea7 202010-11-07 - r25700 - lavfi 1.57.0 - AVFilterInOut
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21 Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
22 This change breaks libavfilter API.
23
146b6555 242010-11-04 - r25674 - lavfi 1.56.0 - avfilter_graph_free()
97dd1e4a
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25 Rename avfilter_graph_destroy() to avfilter_graph_free().
26 This change breaks libavfilter API/ABI.
27
146b6555 282010-11-04 - r25673 - lavfi 1.55.0 - avfilter_graph_alloc()
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29 Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
30
6f84cd12
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312010-11-02 - r25654 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
32 Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
33 deprecate av_get_bits_per_sample_format().
34
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352010-11-02 - r25653 - lavcore 0.11.0 - samplefmt.h
36 Add sample format functions in libavcore/samplefmt.h:
37 av_get_sample_fmt_name(),
38 av_get_sample_fmt(),
39 av_get_sample_fmt_string(),
40 and deprecate the corresponding libavcodec/audioconvert.h functions:
41 avcodec_get_sample_fmt_name(),
42 avcodec_get_sample_fmt(),
43 avcodec_sample_fmt_string().
44
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452010-11-02 - r25652 - lavcore 0.10.0 - samplefmt.h
46 Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
47 SampleFormat.
48
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492010-10-16 - r25502 - lavfi 1.52.0 - avfilter_graph_config()
50 Add the function avfilter_graph_config() in avfiltergraph.h.
51
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522010-10-15 - r25493 - lavf 52.83.0 - metadata API
53 Change demuxers to export metadata in generic format and
54 muxers to accept generic format. Deprecate the public
55 conversion API.
56
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572010-10-10 - r25441 - lavfi 1.49.0 - AVFilterLink.time_base
58 Add time_base field to AVFilterLink.
59
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602010-09-27 - r25236 - lavu 50.31.0 - av_set_options_string()
61 Move av_set_options_string() from libavfilter/parseutils.h to
62 libavutil/opt.h.
63
4ecf1539
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642010-09-27 - r25227 - lavfi 1.47.0 - AVFilterLink
65 Make the AVFilterLink fields srcpad and dstpad store the pointers to
66 the source and destination pads, rather than their indexes.
67
b3dd5e59
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682010-09-27 - r25225 - lavu 50.30.0 - av_get_token()
69 Move av_get_token() from libavfilter/parseutils.h to
70 libavutil/avstring.h.
71
c5812793
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722010-09-26 - r32368 - lsws 0.12.0 - swscale.h
73 Add the functions sws_alloc_context() and sws_init_context().
74
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752010-09-26 - r25210 - lavu 50.29.0 - opt.h
76 Move libavcodec/opt.h to libavutil/opt.h.
77
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782010-09-24 - r25174 - lavu 50.28.0 - av_log_set_flags()
79 Default of av_log() changed due to many problems to the old no repeat
80 detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
81 enabling it for your app!.
82
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832010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()
84 Deprecate av_opt_show() in favor or av_opt_show2().
85
862010-09-14 - r25120 - lavu 50.27.0 - av_popcount()
87 Add av_popcount() to libavutil/common.h.
88
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892010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()
90 Add av_get_cpu_flags().
91
16bacad4
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922010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()
93 Add av_image_copy().
94
952010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()
96 Add av_image_copy_plane().
97
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982010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h
99 Adopt hierarchical scheme for the imgutils.h function names,
100 deprecate the old names.
101
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1022010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*
103 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
104 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
105
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1062010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()
107 Add avcodec_get_channel_layout() in audioconvert.h.
108
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1092010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
110 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
111
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1122010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()
113 Add av_fill_image_max_pixstep() in imgutils.h.
114
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1152010-08-17 - r24814 - lavu 50.24.0 - AV_NE()
116 Add the AV_NE macro.
117
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1182010-08-17 - r24811 - lavfi 1.36.0 - audio framework
119 Implement AVFilterBufferRefAudioProps struct for audio properties,
120 get_audio_buffer(), filter_samples() functions and related changes.
121
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1222010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
123 Add av_get_image_linesize() in imgutils.h.
124
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1252010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
126 Resize data and linesize arrays in AVFilterBufferRef to 8.
127
128 This change breaks libavfilter API/ABI.
129
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1302010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
131 Add av_picture_data_copy in avcodec.h.
132
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1332010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
134 Change avfilter_open() signature:
135 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
136 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
137
138 This change breaks libavfilter API/ABI.
139
ad0d70c9
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1402010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
141 Add a type field to AVFilterBufferRef, and move video specific
142 properties to AVFilterBufferRefVideoProps.
143
4bf2d6e8 144 This change breaks libavfilter API/ABI.
ad0d70c9 145
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1462010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
147 Rename AVFilterLink fields:
148 AVFilterLink.srcpic -> AVFilterLink.src_buf
149 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
150 AVFilterLink.outpic -> AVFilterLink.out_buf
151
1522010-08-07 - r24731 - lavfi 1.30.0
153 Rename functions and fields:
154 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
155 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
156 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
157
1582010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
159 Rename AVFilterPicRef to AVFilterBufferRef.
160
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1612010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
162 Move format field from AVFilterBuffer to AVFilterPicRef.
163
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1642010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
165 Deprecate avcodec_check_dimensions() in favor of the function
166 av_check_image_size() defined in libavcore/imgutils.h.
167
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1682010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
169 Increase size of the arrays AVFilterBuffer.data and
170 AVFilterBuffer.linesize from 4 to 8.
171
172 This change breaks libavfilter ABI.
173
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1742010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
175 Add functions av_fill_image_linesizes() and
176 av_fill_image_pointers(), declared in libavcore/imgutils.h.
177
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1782010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
179 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
180 defined in libavcodec in favor of the newly added functions
181 av_parse_video_size() and av_parse_video_rate() declared in
182 libavcore/parseutils.h.
183
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1842010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
185 Add the M_PHI constant definition.
186
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1872010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
188 Add a type field to AVFilterLink.
189
190 Change the field types:
191 enum PixelFormat format -> int format in AVFilterBuffer
192 enum PixelFormat *formats -> int *formats in AVFilterFormats
193 enum PixelFormat *format -> int format in AVFilterLink
194
195 Change the function signatures:
196 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
197 AVFilterFormats *avfilter_make_format_list(const int *fmts);
198
199 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
200 int avfilter_add_format (AVFilterFormats **avff, int fmt);
201
202 AVFilterFormats *avfilter_all_colorspaces(void); ->
203 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
204
205 This change breaks libavfilter API/ABI.
206
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2072010-07-21 - r24393 - lavcore 0.0.0
208 Add libavcore.
209
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2102010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
211 Remove w and h fields from AVFilterBuffer.
212
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2132010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
214 Rename AVFilterPic to AVFilterBuffer.
215
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2162010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
217 Make url_fskip() return an int error code instead of void.
218
37497979 2192010-07-11 - r24199 - lavc 52.83.0
6f5ac9c1 220 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
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221 Add AVLPCType enum.
222 Deprecate AVCodecContext.use_lpc.
223
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2242010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
225 Add a function for free the contents of a AVSubtitle generated by
226 avcodec_decode_subtitle.
227
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2282010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
229 Make the bswap.h and intreadwrite.h API public.
230
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2312010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
232 Rename read/write_line() to av_read/write_image_line().
233
2342010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
16400da6 235 Add avfilter_copy_picref_props().
52706b95 236
34171e87 2372010-07-03 - r24021 - lavc 52.79.0
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238 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
239 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
34171e87 240
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2412010-07-02 - r23985 - lavu 50.20.0 - lfg.h
242 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
243 lfg.h.
244
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2452010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
246 Extend av_parse_color() syntax, make it accept an alpha value specifier and
247 set the alpha value to 255 by default.
248
58cc11c7 2492010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
16400da6 250 Add priv_data_size and priv_data_class to URLProtocol.
58cc11c7 251
4636f115 2522010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
16400da6 253 Add url_alloc() and url_connect().
4636f115 254
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2552010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
256 Add av_register_protocol2(), deprecating av_register_protocol().
6c4cbc8d 257
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2582010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
259 Add av_compare_mod() to libavutil/mathematics.h.
260
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2612010-06-05 - r23485 - lavu 50.18.0 - eval API
262 Make the eval API public.
263
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2642010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
265 Add AV_BASE64_SIZE() macro.
266
16400da6 2672010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
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268 Add av_get_codec_tag_string().
269
7f464a0a 2702010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
16400da6 271 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
7f464a0a 272
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2732010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
274 Add CODEC_CAP_EXPERIMENTAL flag.
275
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2762010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
277 Add av_get_random_seed().
cca68a54 278
b724102a 2792010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
16400da6 280 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
b724102a 281
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2822010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
283 Add interlaced and top_field_first fields to AVFilterPicRef.
284
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2852010-05-01 - r23002 - lavf 52.62.0 - probe function
286 Add av_probe_input_format2 to API, it allows ignoring probe
287 results below given score and returns the actual probe score.
288
2100348c 2892010-04-01 - r22806 - lavf 52.61.0 - metadata API
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290 Add a flag for av_metadata_set2() to disable overwriting of
291 existing tags.
292
0fb49b59 2932010-04-01 - r22753 - lavc 52.66.0
16400da6 294 Add avcodec_get_edge_width().
0fb49b59 295
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2962010-03-31 - r22750 - lavc 52.65.0
297 Add avcodec_copy_context().
298
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2992010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
300 Make av_match_ext() public.
301
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3022010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
303 Move AVMediaType enum from libavcodec to libavutil.
304
3052010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
306 Define AVMediaType enum, and use it instead of enum CodecType, which
307 is deprecated and will be dropped at the next major bump.
308
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3092010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
310 Implement av_strerror().
311
69087742 3122010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
16400da6 313 Support DCT-I and DST-I.
e1484ebe 314
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3152010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
316 Add AVFormatContext.start_time_realtime field.
317
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3182010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
319 Add AVFilterPicRef.pos field.
320
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3212010-03-13 - r22501 - lavu 50.12.0 - error.h
322 Move error code definitions from libavcodec/avcodec.h to
323 the new public header libavutil/error.h.
324
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3252010-03-07 - r22291 - lavc 52.56.0 - avfft.h
326 Add public FFT interface.
327
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3282010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
329 Add av_stristr().
330
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3312010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
332 Add av_tree_enumerate().
333
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3342010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
335 Add av_compare_ts().
336
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3372010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
338 Add sws_getCoefficients().
339
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3402010-02-01 - r21587 - lavf 52.50.0 - metadata API
341 Add a list of generic tag names, change 'author' -> 'artist',
342 'year' -> 'date'.
343
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3442010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
345 Add av_get_pix_fmt().
346
16400da6 3472010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
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348 Change constness attributes of sws_scale() parameters.
349
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3502010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
351 Add a log_ctx parameter to avfilter_graph_config_links().
352
16400da6 3532010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
1c790092 354 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
715cff9a 355
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3562010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
357 Change the avfilter_add_colorspace() signature, make it accept an
358 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
359
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3602010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
361 Add avfilter_add_colorspace().
362
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3632010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
364 Add av_match_ext(), it should be used in place of match_ext().
365
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3662010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
367 Add av_guess_format(), it should be used in place of guess_format().
368
b8f11ec8 3692009-12-13 - r20834 - lavf 52.43.0 - metadata API
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370 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
371 AV_METADATA_DONT_STRDUP_VAL.
b8f11ec8 372
60a92a77 3732009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
f69d394f 374 Add av_d2str().
60a92a77 375
c3d15329 3762009-12-13 - r20826 - lavc 52.42.0 - AVStream
f69d394f 377 Add avg_frame_rate.
c3d15329 378
54c24216
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3792009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
380 Introduce the av_bmg_next() function.
381
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3822009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
383 Add a slice_dir parameter to avfilter_draw_slice().
384
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3852009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
386 Remove the next field from AVFilter, this is not anymore required.
387
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3882009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
389 Introduce the avfilter_next() function.
390
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3912009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
392 Change the signature of avfilter_register() to make it return an
393 int. This is required since now the registration operation may fail.
394
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3952009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
396 Make the pixdesc.h API public.
397
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3982009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
399 Add a next field to AVFilter, this is used for simplifying the
400 registration and management of the registered filters.
401
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4022009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
403 Add a description field to AVFilter.
01537e9f 404
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4052009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
406 Change the interface of avfilter_make_format_list() from
407 avfilter_make_format_list(int n, ...) to
408 avfilter_make_format_list(enum PixelFormat *pix_fmts).
409
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4102009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
411 Make avfilter_get_video_buffer() recursive and add the w and h
412 parameters to it.
413
04670366 4142009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
227d1b98 415 Add w and h fields to AVFilterPic.
04670366 416
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4172009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
418 This is now an unsigned int instead of a signed int.
419
4bbe788a 4202009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
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421 Add a pts field to AVSubtitle which gives the subtitle packet pts
422 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
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423 not work right without this.
424
8f3f2e06 4252009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
227d1b98 426 PKT_FLAG_KEY has been deprecated and will be dropped at the next
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427 major version. Use AV_PKT_FLAG_KEY instead.
428
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4292009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
430 av_lockmgr_register() can be used to register a callback function
431 that lavc (and in the future, libraries that depend on lavc) can use
432 to implement mutexes. The application should provide a callback function
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433 that implements the AV_LOCK_* operations described in avcodec.h.
434 When the lock manager is registered, FFmpeg is guaranteed to behave
435 correctly in a multi-threaded application.
f988ce6c 436
16400da6 4372009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
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438 av_free_packet() is no longer an inline function. It is now exported.
439
16400da6 4402009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
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441 Please use NULL instead. This has been supported since r16506
442 (lavf > 52.23.1, lavc > 52.10.0).
443
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4442009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
445 The old decoding functions are deprecated, all new code should use the
446 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
447 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
448 argument instead of a const uint8_t *buf / int buf_size pair.
449
16400da6 4502009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
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451 Introduce the av_fifo_space() function.
452
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4532009-04-02 - r18317 - lavc 52.23.0 - AVPacket
454 Move AVPacket declaration from libavformat/avformat.h to
455 libavcodec/avcodec.h.
456
5a43bbc3 4572009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
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458 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
459 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
460 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
461 PIX_FMT_BGR32_1 are now macros.
462 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
f3370e14 463 Re-sort the enum PixelFormat list accordingly.
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464 This change breaks API/ABI backward compatibility.
465
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4662009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
467 Add the enum PixelFormat values:
468 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
469 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
470
b4656e6b 4712009-03-21 - r18116 - lavu 50.0.0 - av_random*
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472 The Mersenne Twister PRNG implemented through the av_random* functions
473 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
474 instead.
475
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4762009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
477 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
478 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
479 and av_fifo_realloc2.
480 In addition, the order of the function arguments of av_fifo_generic_read
227d1b98 481 was changed to match av_fifo_generic_write.
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482 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
483 applications, they may not use sizeof() or directly access members.
22d4f236 484
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4852009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
486 Introduce a new metadata API (see av_metadata_get() and friends).
487 The old API is now deprecated and should not be used anymore. This especially
429d6b21 488 includes the following structure fields:
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489 - AVFormatContext.title
490 - AVFormatContext.author
491 - AVFormatContext.copyright
492 - AVFormatContext.comment
493 - AVFormatContext.album
494 - AVFormatContext.year
495 - AVFormatContext.track
496 - AVFormatContext.genre
497 - AVStream.language
498 - AVStream.filename
499 - AVProgram.provider_name
500 - AVProgram.name
501 - AVChapter.title