This is a replacement in ffmpeg for the deprecated avcodec flag AV_CODEC_FLAG_DROPCHANGED.
This option is meant to be used when the filtergraph should not be
reinited upon input parameter changes as that leads to loss of state
in the filtergraph potentially leading to broken or aborted output,
e.g. inserting of silence with first_pts specified in aresample.
Generally useful to avoid corrupted yet decodable packets in live
streaming inputs.
This option when enabled takes precedence over reinit_filters
This commit adds a 32-bit *integer* planar RGBA format.
Vulkan FFv1 decoding is best performed on separate planes, rather than
packed RGBA (i.e. RGBA128), hence this is useful as an intermediate format.
These were introduced in libplacebo API version 220. We actually already
map the field by default, but deinterlacing was never enabled unless the user
explicitly forced it using extra_ops.
The Main profile of AAC is... terrible.
It enables the use of delta coding across coefficients of two frames
to try to increase compression, and it enabled one more pole for TNS
filters.
What the AAC authors failed to take into account were basic
mathematics, as MDCT leakage (e.g. the spread of each frequency when
represented in a discrete spectrum) is significant in most audio codecs.
This leads to huge variations between each frame, basically rendering
prediction completely pointless.
In fact, enabling AAC-Main prediction does not, in general, even recoup
the metadata losses from signalling the profile and prediction properties
in the first place. So you lose efficiency by using AAC Main.
The rumor is that it was put in the AAC spec for patent reasons, though
patent-wise, it has about as much use as a patent for a bicycle designed
for use by snakes.
The only other thing AAC Main changes is it permits 3-pole TNS filters.
When AAC's bands are absolutely tiny, except for very high frequency bands,
where you're likely to use PNS instead.
Just get rid of it.
At present, if reading from a readrate-limited input is stalled,
then upon resumption, ffmpeg will read the input without any
throttle till the average readrate matches the specified readrate.
This new option allows to set a speed limit when reading is resumed
until the average readrate matches the primary readrate.
Fixes#11469
This commit adds two logging flags: 'time' and 'datetime'.
Usage:
ffmpeg -loglevel +time
or
ffmpeg -loglevel +datetime
Signed-off-by: softworkz <softworkz@hotmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
4b77a0a681 added a new consumer of ff_scale_adjust_dimensions
which was recently modified to allow for square pixel output.
This commit extends the new option to vpp_amf, and unbreaks the building
of vf_amf_common.c
For anamorphic videos, enabling this option leads to adjustment of
output dimensions to obtain square pixels when the user requests
proportional scaling through either of the w/h expressions or
force_original_aspect_ratio.
Output SAR is always reset to 1.
Option added to scale, scale_cuda, scale_npp & scale_vaapi.
libplacebo already has a similar option with different semantics,
scale_vt and scale_vulkan don't implement force_oar, so for these
three filters, I've made minimal changes needed to not break building
or change output.
IVTV, a Linux driver for TV tuners, and V4L2 utilize
a coding named after IVTV to carry sliced VBI data
in MPEG streams produced by tuner cards with
VBI capture capability and an MPEG-2 encoder SoC.
IVTV or V4L2 driver will transport the coded data into a
MPEG-PS private stream ("IVTV") that can be captured
from the card alongside the video/audio.
The data could include:
EIA-608, Teletext, WSS (PAL widescreen signaling),
or VPS (PAL VCR signaling).
Signed-off-by: Marth64 <marth64@proxyid.net>
Here is a proposed patch for portability of doc/t2h.pm for GNU Texinfo
7.1 and 7.1.90 (7.2 pretest). I tested against 7.1 and 7.1.90 (7.2
pretest). There is a difference in the headings compared to the website
version, maybe related to FA_ICONS not being set the same, but the
result seems correct.
I also renamed $element to $output_unit in ffmpeg_heading_command as in
new equivalent makeinfo/texi2any code the $element variable is the
$command variable in ffmpeg_heading_command, which is very confusing. I
left as is the $command variable to have a patch easier to read, but it
could make sense to rename $command as $element later on.
The patch could also have effects with Texinfo 7.0, since some of the
changes are for that version, but that probably never show up because it
is for situations that may not exist in ffmpeg manuals (for example
@node without sectioning command), or because the code is robust to some
missing information (case of $heading_level in ffmpeg_heading_command
that was not set, as far as I can tell).
Signed-off-by: James Almer <jamrial@gmail.com>
In f121d95, the outlink framerate was unconditionally unset.
This breaks/bloats outputs from CFR muxers unless the user explicitly
sets a sane framerate. And the most common invocation for setpts seen in
workflows, our docs and across the web is `PTS-STARTPTS` or others of the
general form `PTS+constant` which preserves the input framerate.
Default value is false, which restores old behaviour.
Fixes#11428
This blocks disallowed extensions from probing
It also requires all available segments to have matching extensions to the format
mpegts is treated independent of the extension
It is recommended to set the whitelists correctly
instead of depending on extensions, but this should help a bit,
and this is easier to backport
Fixes: CVE-2023-6602 II. HLS Force TTY Demuxer
Fixes: CVE-2023-6602 IV. HLS XBIN Demuxer DoS Amplification
The other parts of CVE-2023-6602 have been fixed by prior commits
Found-by: Harvey Phillips of Amazon Element55 (element55)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
These properties are unreliable because they depend on the frames decoded so
far, users should check directly the presence of the decoded AVFrame side data
or AVFrame flags.
Signed-off-by: Marton Balint <cus@passwd.hu>
libjxl supports animated encoding, so we add a wrapper to the
library using the receive_packet callback method.
This code was based largely on a patch sent by Zsolt Vadász,
although it was updated to use more recent coding practices
and many of the leaks and issues were fixed.
Reviewed-by: Marth64 <marth64@proxyid.net>
Co-authored-by: Zsolt Vadász <zsolt_vadasz@protonmail.com>
Signed-off-by: Leo Izen <leo.izen@gmail.com>
As discussed in the previous commit, we often need a convenient way of
stripping all side data related to a certain aspect of the frame. This helper
accomplishes just that.
I considered also adding a way to match only side data matching *all*
properties, but I think this is sufficiently useless in practise to not warrant
inclusion in the API.
Many filters modify certain aspects of frame data, e.g. through resizing
(vf_*scale* family), color volume mapping (vf_lut*, vf_tonemap*), or
possibly others.
When this happens, we should strip all frame side data that will no
longer be correct/relevant after the operation. For example, changing
the image size should invalidate AV_FRAME_DATA_PANSCAN because the crop
window (given in pixels) no longer corresponds to the actual image size.
For another example, tone-mapping filters (e.g. from HDR to SDR) should
strip all of the dynamic HDR related metadata.
Since there are a lot of different side data types that are affected by such
operations, it makes sense to establish this information in a common, easily
accessible way. The existing side data properties enum is a perfect fit for
this.
This setting can be used to infuence the type of tone and gamut mapping used
internally when color space conversions are required. As discussed at VDD'24,
the default was set to relative colorimetric clipping, which is approximately
associative, surjective and idempotent. As such, it roundtrips well, although
it is strictly speaking not associative on out-of-gamut colors.
This can be useful in other places, e.g. it can replace objpool in
fftools.
The API is modified in the following nontrivial ways:
* opaque pointers can be passed through to all user callbacks
* read and write were previously separate callbacks in order to
accomodate the caller wishing to write a new reference to the FIFO and
keep the original one; the two callbacks are now merged into one, and
a flags argument is added that allows to request such behaviour on a
per-call basis
* new peek and drain functions
Currently, ffprobe has two stream-level fields that do not work,
closed_captions and film_grain).
Their value is always 0 because ffprobe cannot access the internal
codec properties when it is setting up its stream contexts.
In this commit, add the new option -analyze_frames to ffprobe,
allowing the user to read frames up to the interval they have defined
and fill these fields based on what is exposed in AVPacketSideData.
Additionally, in the same commit, don't write these fields to
the output unless analyze_frames is enabled. Finally, fix the
FATE test refs accordingly and update the docs.
Signed-off-by: Marth64 <marth64@proxyid.net>
