These functions are using the POSIX clock_gettime() function with the
CLOCK_MONOTONIC clock id. If these are not present on the targeted
platform, the new functions will fallback on using the original realtime functions
av_gettime() and av_usleep().
Monotonic support can be added on other platforms with their
equivalent native system API eventually if possible.
Whenever time is requested to measure relative time, the monotonic clock,
when available, is superior to the system realtime clock because it is
not affected by discontinuous jumps in the system time
In a future step, offering the flexibility to let the user choose between
rt and monotonic clock for avdevices packets will be investigated.
It is very easy to experience the issues that this patch attempt to address
by rewinding back in the past the system time while ffmpeg is running.
this is breaking the ffmpeg report printing (ffmepg.c:print_report()) and
the the rate emulator functionality (-re) without the patch.
Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Describe the option added in commit f1c167496e
Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Use it instead of checking CODEC_FLAG_BITEXACT in the first stream's
codec context.
Using codec options inside lavf is fragile and can easily break when the
muxing codec context is not the encoding context.
* commit '66e6c8a7b4e3ac926302529606bd3e323c28b20f':
lavu: Add a pixel format for new VDA hwaccel
Conflicts:
doc/APIchanges
libavutil/pixfmt.h
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Existing av_opt_set_dict doesn't accept flags.
It doesn't allow to pass options to nested structs.
New function alllows that.
Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
* commit '6484149158b6fc6d13d2b2ef84cb26a2d3275400':
lavc: make the xvid-specific "gmc" flag a private option of libxvid
Conflicts:
libavcodec/libxvid.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* cigaes/master:
lavfi/drawtext: allow to format pts as HH:MM:SS.mmm.
lavf/concatdec: implement automatic conversions.
lavf/concatdec: reindent after last commit.
lavf/concatdec: always do stream matching.
lavf/concatdec: check match_streams() return value.
lavf/concatdec: use a structure for each stream.
ffprobe: use the codec descriptor if no decoder was found.
lavf/matroska: add "binary" pseudo-MIME type.
lavc: minor bump and APIchanges for AVCodecDescriptor.mime_types.
lavc: add a mime_types field to codec descriptors.
lavc: add AV_CODEC_ID_BIN_DATA.
lavc: add codec descriptors for TTF and OTF.
lavc: add codec descriptors for deprecated ids.
lavc/codec_desc: add separation comment.
tools/ffhash: implement base64 output.
tools/ffhash: use av_hash_final_hex().
lavu/hash: add hash_final helpers.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '5a70a783f04919514efec7751d710b64d8975fd7':
hls: Add an option to prepend a baseurl to the playlist entries
Conflicts:
doc/muxers.texi
libavformat/hlsenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '5c08ae4f37281441188447cd04dcaf7cd7ce031f':
segment: Add an option to prepend a string to the list entries
Conflicts:
doc/muxers.texi
libavformat/segment.c
See: 5e278c19c7
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'ed4b757177f9b563412cdbc8ee3405d82e10fc05':
dxva2_h264: add a workaround for old Intel GPUs
Conflicts:
doc/APIchanges
libavcodec/version.h
See: 8b2a130d3f
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Old Intel GPUs expect the reference frame index to the actual surface,
instead of the index into RefFrameList as specified by the spec.
This workaround should be set when using one of the "ClearVideo" decoder
devices.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
