| Commit message (Collapse) | Author | Age |
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Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
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Since 596e5d4783, this is not necessary anymore. It also allows to
actually disable the flushing, improving write performance (but
possibly giving worse latency in real-time streaming).
Signed-off-by: Martin Storsjö <martin@martin.st>
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This is consistent with stdio and is what we want to do in all cases.
Fixes a bug in the voc muxer which didn't flush in write_trailer()
previously. This is the cause of the change in the test results.
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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It's more readable and less prone to breakage.
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Deprecate AVFormatContext.loop_output.
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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In the name of consistency:
put_byte -> avio_w8
put_<type> -> avio_w<type>
put_buffer -> avio_write
put_nbyte will be made private
put_tag will be merged with avio_put_str
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.
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is deprecated and will be dropped at the next major bump.
Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
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The new name is more readable and consistent with the FFmpeg naming
style.
Originally committed as revision 18497 to svn://svn.ffmpeg.org/ffmpeg/trunk
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put_bits.h.
Originally committed as revision 18461 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 16591 to svn://svn.ffmpeg.org/ffmpeg/trunk
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patch by Stefano Sabatini, stefano.sabatini-lala poste.it
along with some spelling/consistency fixes for the long names by me
Originally committed as revision 13649 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 13069 to svn://svn.ffmpeg.org/ffmpeg/trunk
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abort()
Originally committed as revision 11546 to svn://svn.ffmpeg.org/ffmpeg/trunk
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patch by: Björn Axelsson, bjorn d axelsson a intinor d se
thread: [PATCH] Remove static ByteIOContexts, 06 nov 2007
Originally committed as revision 11071 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 9760 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 6875 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 6774 to svn://svn.ffmpeg.org/ffmpeg/trunk
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and fix GPL/LGPL version mismatches.
Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 5887 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 5707 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 5697 to svn://svn.ffmpeg.org/ffmpeg/trunk
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completely clear what it was good for anyway)
Originally committed as revision 5689 to svn://svn.ffmpeg.org/ffmpeg/trunk
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used and 'const char*' should be, plus make some function declarations
static if they aren't used outside their declaring source file.
patch by Stefan Huehner stefan%%at%%huehner%%dot%%org
Originally committed as revision 5492 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
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AVCodecContext dont randomize AVStream and break binary compatibility
Originally committed as revision 4453 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4383 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4168 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 3778 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 3363 to svn://svn.ffmpeg.org/ffmpeg/trunk
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fixes the random dts/pts during encoding
asf preroll fix
no more initial zero frames for b frame encoding
mpeg-es dts during demuxing fixed
.ffm timestamp scale fixed, ffm is still broken though
Originally committed as revision 3168 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 2567 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 2369 to svn://svn.ffmpeg.org/ffmpeg/trunk
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