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avformat/avformat: Improve doxy style
Mostly re-indenting and adding some missing references.
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@ -1898,8 +1898,8 @@ const AVOutputFormat *av_muxer_iterate(void **opaque);
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/**
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* Iterate over all registered demuxers.
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*
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* @param opaque a pointer where libavformat will store the iteration state. Must
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* point to NULL to start the iteration.
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* @param opaque a pointer where libavformat will store the iteration state.
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* Must point to NULL to start the iteration.
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*
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* @return the next registered demuxer or NULL when the iteration is
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* finished
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@ -1963,6 +1963,7 @@ AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c);
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* family of functions. The ownership of the data is transferred to
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* st.
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* @param size side information size
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*
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* @return zero on success, a negative AVERROR code on failure. On failure,
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* the stream is unchanged and the data remains owned by the caller.
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*/
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@ -1975,6 +1976,7 @@ int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
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* @param stream stream
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* @param type desired side information type
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* @param size side information size
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*
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* @return pointer to fresh allocated data or NULL otherwise
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*/
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uint8_t *av_stream_new_side_data(AVStream *stream,
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@ -1986,6 +1988,7 @@ uint8_t *av_stream_new_side_data(AVStream *stream,
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* @param type desired side information type
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* @param size If supplied, *size will be set to the size of the side data
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* or to zero if the desired side data is not present.
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*
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* @return pointer to data if present or NULL otherwise
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*/
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uint8_t *av_stream_get_side_data(const AVStream *stream,
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@ -2003,14 +2006,15 @@ AVProgram *av_new_program(AVFormatContext *s, int id);
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* avformat_free_context() can be used to free the context and
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* everything allocated by the framework within it.
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*
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* @param ctx pointee is set to the created format context, or to NULL in
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* case of failure
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* @param ctx pointee is set to the created format context,
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* or to NULL in case of failure
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* @param oformat format to use for allocating the context, if NULL
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* format_name and filename are used instead
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* @param format_name the name of output format to use for allocating the
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* context, if NULL filename is used instead
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* @param filename the name of the filename to use for allocating the
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* context, may be NULL
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*
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* @return >= 0 in case of success, a negative AVERROR code in case of
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* failure
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*/
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@ -2073,6 +2077,7 @@ const AVInputFormat *av_probe_input_format3(const AVProbeData *pd,
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* @param logctx the log context
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* @param offset the offset within the bytestream to probe from
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* @param max_probe_size the maximum probe buffer size (zero for default)
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*
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* @return the score in case of success, a negative value corresponding to an
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* the maximal score is AVPROBE_SCORE_MAX
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* AVERROR code otherwise
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@ -2092,16 +2097,19 @@ int av_probe_input_buffer(AVIOContext *pb, const AVInputFormat **fmt,
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* Open an input stream and read the header. The codecs are not opened.
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* The stream must be closed with avformat_close_input().
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*
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* @param ps Pointer to user-supplied AVFormatContext (allocated by avformat_alloc_context).
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* May be a pointer to NULL, in which case an AVFormatContext is allocated by this
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* @param ps Pointer to user-supplied AVFormatContext (allocated by
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* avformat_alloc_context). May be a pointer to NULL, in
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* which case an AVFormatContext is allocated by this
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* function and written into ps.
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* Note that a user-supplied AVFormatContext will be freed on failure.
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* Note that a user-supplied AVFormatContext will be freed
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* on failure.
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* @param url URL of the stream to open.
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* @param fmt If non-NULL, this parameter forces a specific input format.
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* Otherwise the format is autodetected.
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* @param options A dictionary filled with AVFormatContext and demuxer-private options.
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* On return this parameter will be destroyed and replaced with a dict containing
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* options that were not found. May be NULL.
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* @param options A dictionary filled with AVFormatContext and demuxer-private
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* options.
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* On return this parameter will be destroyed and replaced with
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* a dict containing options that were not found. May be NULL.
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*
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* @return 0 on success, a negative AVERROR on failure.
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*
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@ -2140,6 +2148,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options);
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* @param last the last found program, the search will start after this
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* program, or from the beginning if it is NULL
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* @param s stream index
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*
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* @return the next program which belongs to s, NULL if no program is found or
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* the last program is not among the programs of ic.
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*/
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@ -2164,10 +2173,12 @@ void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
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* @param decoder_ret if non-NULL, returns the decoder for the
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* selected stream
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* @param flags flags; none are currently defined
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*
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* @return the non-negative stream number in case of success,
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* AVERROR_STREAM_NOT_FOUND if no stream with the requested type
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* could be found,
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* AVERROR_DECODER_NOT_FOUND if streams were found but no decoder
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*
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* @note If av_find_best_stream returns successfully and decoder_ret is not
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* NULL, then *decoder_ret is guaranteed to be set to a valid AVCodec.
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*/
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@ -2212,12 +2223,13 @@ int av_read_frame(AVFormatContext *s, AVPacket *pkt);
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* 'timestamp' in 'stream_index'.
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*
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* @param s media file handle
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* @param stream_index If stream_index is (-1), a default
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* stream is selected, and timestamp is automatically converted
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* from AV_TIME_BASE units to the stream specific time_base.
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* @param timestamp Timestamp in AVStream.time_base units
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* or, if no stream is specified, in AV_TIME_BASE units.
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* @param stream_index If stream_index is (-1), a default stream is selected,
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* and timestamp is automatically converted from
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* AV_TIME_BASE units to the stream specific time_base.
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* @param timestamp Timestamp in AVStream.time_base units or, if no stream
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* is specified, in AV_TIME_BASE units.
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* @param flags flags which select direction and seeking mode
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*
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* @return >= 0 on success
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*/
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int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp,
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@ -2308,16 +2320,22 @@ void avformat_close_input(AVFormatContext **s);
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* Allocate the stream private data and write the stream header to
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* an output media file.
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*
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* @param s Media file handle, must be allocated with avformat_alloc_context().
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* Its oformat field must be set to the desired output format;
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* Its pb field must be set to an already opened AVIOContext.
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* @param options An AVDictionary filled with AVFormatContext and muxer-private options.
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* On return this parameter will be destroyed and replaced with a dict containing
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* options that were not found. May be NULL.
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* @param s Media file handle, must be allocated with
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* avformat_alloc_context().
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* Its \ref AVFormatContext.oformat "oformat" field must be set
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* to the desired output format;
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* Its \ref AVFormatContext.pb "pb" field must be set to an
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* already opened ::AVIOContext.
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* @param options An ::AVDictionary filled with AVFormatContext and
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* muxer-private options.
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* On return this parameter will be destroyed and replaced with
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* a dict containing options that were not found. May be NULL.
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*
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* @return AVSTREAM_INIT_IN_WRITE_HEADER on success if the codec had not already been fully initialized in avformat_init,
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* AVSTREAM_INIT_IN_INIT_OUTPUT on success if the codec had already been fully initialized in avformat_init,
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* negative AVERROR on failure.
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* @retval AVSTREAM_INIT_IN_WRITE_HEADER On success, if the codec had not already been
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* fully initialized in avformat_init_output().
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* @retval AVSTREAM_INIT_IN_INIT_OUTPUT On success, if the codec had already been fully
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* initialized in avformat_init_output().
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* @retval AVERROR A negative AVERROR on failure.
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*
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* @see av_opt_find, av_dict_set, avio_open, av_oformat_next, avformat_init_output.
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*/
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@ -2326,20 +2344,26 @@ int avformat_write_header(AVFormatContext *s, AVDictionary **options);
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/**
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* Allocate the stream private data and initialize the codec, but do not write the header.
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* May optionally be used before avformat_write_header to initialize stream parameters
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* May optionally be used before avformat_write_header() to initialize stream parameters
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* before actually writing the header.
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* If using this function, do not pass the same options to avformat_write_header.
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* If using this function, do not pass the same options to avformat_write_header().
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*
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* @param s Media file handle, must be allocated with avformat_alloc_context().
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* Its oformat field must be set to the desired output format;
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* Its pb field must be set to an already opened AVIOContext.
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* @param options An AVDictionary filled with AVFormatContext and muxer-private options.
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* On return this parameter will be destroyed and replaced with a dict containing
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* options that were not found. May be NULL.
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* @param s Media file handle, must be allocated with
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* avformat_alloc_context().
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* Its \ref AVFormatContext.oformat "oformat" field must be set
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* to the desired output format;
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* Its \ref AVFormatContext.pb "pb" field must be set to an
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* already opened ::AVIOContext.
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* @param options An ::AVDictionary filled with AVFormatContext and
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* muxer-private options.
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* On return this parameter will be destroyed and replaced with
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* a dict containing options that were not found. May be NULL.
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*
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* @return AVSTREAM_INIT_IN_WRITE_HEADER on success if the codec requires avformat_write_header to fully initialize,
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* AVSTREAM_INIT_IN_INIT_OUTPUT on success if the codec has been fully initialized,
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* negative AVERROR on failure.
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* @retval AVSTREAM_INIT_IN_WRITE_HEADER On success, if the codec requires
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* avformat_write_header to fully initialize.
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* @retval AVSTREAM_INIT_IN_INIT_OUTPUT On success, if the codec has been fully
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* initialized.
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* @retval AVERROR Anegative AVERROR on failure.
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*
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* @see av_opt_find, av_dict_set, avio_open, av_oformat_next, avformat_write_header.
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*/
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@ -2512,8 +2536,10 @@ enum AVCodecID av_guess_codec(const AVOutputFormat *fmt, const char *short_name,
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* time_base units
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* @param[out] wall absolute time when that packet whas output,
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* in microsecond
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* @return 0 if OK, AVERROR(ENOSYS) if the format does not support it
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* Note: some formats or devices may not allow to measure dts and wall
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* @retval 0 Success
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* @retval AVERROR(ENOSYS) The format does not support it
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*
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* @note Some formats or devices may not allow to measure dts and wall
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* atomically.
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*/
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int av_get_output_timestamp(struct AVFormatContext *s, int stream,
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