Also check for possible overflows.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

It can be unset in avcodec_parameters_from_context and a value of 0
causes SIGFPE crashes.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

on OSX:
../configure --disable-everything --enable-demuxer=hls make
error message: Undefined symbols for architecture x86_64:
"_av_vda_default_init2", referenced from:_videotoolbox_init in
ffmpeg_videotoolbox.o
so add av_vda_default_init2 when CONFIG_H264_VDA_HWACCEL=0
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Reviewed-by: Xidorn Quan <quanxunzhen@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fix problem to fail by a RTMP Control Message except "Set Chunk Size (1)" after an RTMP handshake. When 'nginx-rtmp-module' relays an RTMP, it sends not only control message 'Set Chunk Size (1)' but also 'Window Acknowledgement Size (5)'.
Reviewed-by: Steven Liu <lingjiujianke@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This function must be called from the mb or slice encoding loop and MMX state may not
be clean there
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Its slow, its not checked, FPU state is not clean either currently there
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This fixes the case of writing segments to local files, but the list
over a network protocol.

Fixes #5675
Signed-off-by: Matt Oliver <protogonoi@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Read video_line_map from MXF generic picture essence descriptor and use
it to derive the coded field order. Use field_dominance to derive the
display field order from coded field order. If field_dominance is not
available the default value "1" is used as defined in SMPTE S377-1.

Fixes field_order detection for a bunch of DV/DVCPRO files. The heuristic
for deriving coded field order from video_line_map is inspired by
MediaInfo.
Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Negative values don't make sense and too large values can cause
overflows. For AV_CODEC_ID_ADPCM_THP this leads to a too small extradata
buffer being allocated, causing out-of-bounds writes.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Fixes a regression introduced in 9b462a0b

Its impossible to update the filesize & duration values if seekback is not
possible as with live streams
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

A size of 32 is typically used.

this makes real-valued kernel
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

If probe_codec is called with pkt == NULL, it sets probe_packets to 0
and request_probe to -1.
However, request_probe can change when calling s->iformat->read_packet
and thus a probe_packets value of 0 doesn't guarantee a request_probe
value of -1.
In that case calling probe_codec again is necessary to prevent
triggering the assert.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Found-by: Daemon404
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avfilter/vf_scale_npp: select cubic and lanczos as alternative where super-sampling is not supported
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

The option is present in h264_nvenc, but was missing from hevc_nvenc.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

Adds a check to see if the hardware supports temporal aq.
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

Adds the following changes:
  * mediacodecdec.{c,h} -> mediacodecdec_common.{c,h}
  * mediacodecdec_h2645.c -> mediacodecdec.c

Depending on the device, some (VP8/VP9/...) decoders report that they do
not support any profiles.

smoother version of gain_interpolate
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

The element is currently ignored, so there's no effective functionality
change with this.
Signed-off-by: James Almer <jamrial@gmail.com>

This way it's more clear what the default values refer to, as
Undetermined/Unspecified is 0 for some, 2 for others.
Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Rick Kern <kernrj@gmail.com>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Performance improvements:

quant_bands:
with:     681 decicycles in quant_bands, 8388453 runs,    155 skips
without: 1190 decicycles in quant_bands, 8388386 runs,    222 skips
Around 42% for the function

Twoloop coder:

abs_pow34:
with/without: 7.82s/8.17s
Around 4% for the entire encoder

Both:
with/without: 7.15s/8.17s
Around 12% for the entire encoder

Fast coder:

abs_pow34:
with/without: 3.40s/3.77s
Around 10% for the entire encoder

Both:
with/without: 3.02s/3.77s
Around 20% faster for the entire encoder
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: James Almer <jamrial@gmail.com>

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>