vdpau/h264: request MAIN rather than BASELINE VDPAU profile for CBP
The H.264 Constrained Baseline Profile (CBP) is a subset of both the
Main Profile and the Baseline Profile. In principles, a hardware
decoder that supports either of those can decode CBP content. As it
happens, Main is supported by all VDPAU drivers, and Baseline is not.
So favor map CBP to MP for now. Hopefully in the future libvdpau will
offer an explicit choice for CBP.
Vittorio Giovara [Wed, 22 Oct 2014 13:36:32 +0000 (14:36 +0100)]
matroskaenc: write correct Display{Width, Height} in stereo encoding
should be the raw amount of pixels (for example 3840x1080 for full HD side by
side) and the DisplayWidth/Height in pixels should be the amount of pixels for
one plane (1920x1080 for that full HD stream)."
So, move the aspect ratio check in the mkv_write_stereo_mode() function
and always write the embl when stereo format and/or aspect ration is set.
Also add a few comments to that function.
CC: libav-stable@libav.org Found-by: Asan Usipov <asan.usipov@gmail.com>
Martin Storsjö [Fri, 24 Oct 2014 07:59:34 +0000 (10:59 +0300)]
drawtext: Remove the ifdef for localtime_r
If it isn't available in the system, we've got a fallback to
the normal localtime function, so normal code can assume it is
available as long as time_internal.h is included.
Martin Storsjö [Fri, 24 Oct 2014 07:46:36 +0000 (10:46 +0300)]
Use gmtime_r instead of gmtime and localtime_r instead of localtime
gmtime isn't thread safe in general. In msvcrt (which lacks gmtime_r),
the buffer used by gmtime is thread specific though.
One call to localtime is left in avconv_opt.c, where thread safety
shouldn't matter (instead of making avconv depend on the libavutil
internal header).
Martin Storsjö [Fri, 24 Oct 2014 07:33:19 +0000 (10:33 +0300)]
lavu: Provide fallbacks for gmtime_r and localtime_r
This allows writing most code as if they always are is available.
These are ok to use from other libraries even though it's not a
public header, since they only provide an inline declaration, and
doesn't add an actual dependency on lavu internals. (This can be
considered more a build system compatibility fallback than a
libavutil feature.)
Martin Storsjö [Wed, 22 Oct 2014 09:40:46 +0000 (12:40 +0300)]
lavf: Use av_gettime_relative
The ones left using av_gettime are NTP timestamps (for RTCP,
which is specified to send the actual current realtime clock
in RTCP SR packets), and the NUT muxer timestamper, which is
documented as using wallclock time.
Whenever av_gettime() is used to measure relative period of time,
av_gettime_relative() is prefered as it guarantee monotonic time
on supported platforms.
Whenever av_gettime() is used to measure relative period of time,
av_gettime_relative() is prefered as it guarantee monotonic time
on supported platforms.
Martin Storsjö [Wed, 22 Oct 2014 09:14:37 +0000 (12:14 +0300)]
lavu: Add av_gettime_relative
Since av_gettime() is used in a number of places where actual
real time clock is required, the monotonic clock introduced in ebef9f5a5 would have consequences that are hard to handle. Instead
split it into a separate function that can be used in the cases
where only relative time is desired.
On platform where no monotonic clock is available, the difference
between the two av_gettime functions is not clear, and one could
mistakenly use the relative clock where an absolute one is
required. Therefore add an offset, to make it evident that the
time returned from av_gettime_relative never is actual current
real time, even though it is based on av_gettime.
Anton Khirnov [Wed, 8 Oct 2014 10:49:11 +0000 (10:49 +0000)]
libvpxenc: add static-thresh private option
Currently, this option is accessed through AVCodecContext.mb_threshold,
which originally controlled reusing MB data when transcoding mpeg to
mpeg. Since the libvpx meaning is completely different from the original
mpegvideo meaning, it is better to use a separate private option for
this.
The rounding used in the PTS calculations in filter_frame() does
not actually match the number of samples output by the resampler.
This leads to off-by-1 errors in the timestamps indicating gaps and
underruns, even when the input timestamps are all contiguous.
Uwe L. Korn [Fri, 17 Oct 2014 14:30:46 +0000 (16:30 +0200)]
rtmpproto: Track last received timestamp
Some RTMP commands need the most recent timestamp as their parameter, so
keep track of it. This must be the most recent one and not e.g. the max
received timestamp as it can decrease again through seeking.
Omer Osman [Tue, 14 Oct 2014 14:43:08 +0000 (16:43 +0200)]
libfdk-aacdec: Enable Dynamic Range Control Metadata Support
For streams which contain DRC metadata, the FDK decoder is able to
control rendering of the decoded output. The rendering parameters
are detailed in fdk_aac_dec_options [].
Omer Osman [Tue, 14 Oct 2014 14:43:07 +0000 (16:43 +0200)]
libfdk-aacdec: Enable Decoder Downmix including Downmix Metadata Support
The FDK decoder is capable of producing mono and stereo downmix from
multichannel streams. These streams may contain metadata that control
the downmix process. The decoder requires an Ancillary Buffer in order to
correctly apply downmix in streams containing downmix Metadata. The
decoder does not have an API interface to inform of the presence of
Metadata in the stream, and therefore the Ancillary Buffer is always
allocated whenever a downmix is requested.
When downmixing multichannel streams, the decoder requires the output
buffer in aacDecoder_DecodeFrame call to be of fixed size in order to
hold the actual number of channels contained in the stream. For example,
for a 5.1ch to stereo downmix, the decoder requires that the output buffer
is allocated for 6 channels, regardless of the fact that the output is in
fact two channels.
Due to this requirement, the output buffer is allocated for the maximum
output buffer size in case a downmix is requested (and also during
decoder init). When a downmix is requested, the buffer used for output
during init will also be used for the entire duration the decoder is open.
Otherwise, the initial decoder output buffer is freed and the decoder
decodes straight into the output AVFrame.
Uwe L. Korn [Tue, 14 Oct 2014 15:16:21 +0000 (17:16 +0200)]
rtmpproto: Add getStreamLength call to query duration
In (non-live) streams with no metadata, the duration of a stream can
be retrieved by calling the RTMP function getStreamLength with the
playpath. The server will return a positive duration upon the request if
the duration is known, otherwise either no response or a duration of 0
will be returned.
Uwe L. Korn [Tue, 14 Oct 2014 15:16:20 +0000 (17:16 +0200)]
rtmpproto: Add function to read a number response
Packets that contain a number as a result to a rtmp function call are
structured the same way (String, Number, Null, Number). This new method
also includes more bounds checks to better handle packets that are not
structured as expected.
projects / ffmpeg / log