This commit redistributes the leftover bytes amongst the top 150 slices
in terms of size (in the hopes that they'll be the ones pretty bitrate
starved).

A more perceptual method would probably need to cut bits off from slices
which don't need much, but that'll be implemented later.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Previously used the luma size only.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

The encoder crashed on verly low bitrates since there wasn't enough
space allocated.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

The encoder crashed on verly low bitrates since there wasn't enough
space allocated.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Previously a global average was used. Using the previous quantizer
resulted in a fairly significant speedup as slice size selection settled
down quicker.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

16 bits were definitely not enough and caused artifacts to appear on
images at barely compressed images.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Needed for following commits, also a speed increase.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes: ebd58db6-dc86-11e5-91c2-59daeddf50c7.jpg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The changes in "Incompatible libraries" section are strictly based on
what our configure script says.

 4.5x faster than C float version with autovectorization
10  x faster than C int version
25  x faster than C float version without autovectorization

Fixes large amounts of seeking past EOF, which could be extremely
slow over a network.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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

Check that the required plane pointers and only
those are set up.
Currently does not enforce anything for the palette
pointer of pseudopal formats as I am unsure about the
requirements.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

We do neither document nor check such a requirement
and for application-provided get_buffer2 they could
contain the result of a malloc(0) or whatever value
they had previously.
This fixes a use-after-free in e.g. MPlayer:
https://trac.mplayerhq.hu/ticket/2262
We might want to consider changing the (documented)
API in addition though.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Reported as https://trac.mplayerhq.hu/ticket/2264 but have
not been able to reproduce with FFmpeg-only.
I have no idea what coded_height is used for here exactly,
so this might not be the best fix.
Fixes the following chain of events:
ff_mss12_decode_init sets coded_height while not setting height.
ff_mpv_decode_init then copies coded_height into MpegEncContext height.
This is then used by init_context_frame to allocate the data structures.
However the wmv9rects are validated/initialized based on avctx->height, not
avctx->coded_height.
Thus the decode_wmv9 function will try to decode a larger video that we
allocated data structures for, causing out-of-bounds writes.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

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

movenc: Timecode in MP4 Although MP4 does not have a concrete specification to store timecode information, the following technical note from Apple describes a way to achieve this via timecode track, similar to how it is done for MOV files.

https://developer.apple.com/library/mac/technotes/tn2174/_index.html

- Enabled creation of timecode tracks for MP4 in the same way as MOV.
- Used nmhd as media information header of timecode track of MP4 instead
  of gmhd used in MOV, thus avoiding tcmi also, as recommended above.
- Bypassed adding source reference field for MP4, as suggested above.

Issue: https://trac.ffmpeg.org/ticket/4704Signed-off-by: Syed Andaleeb Roomy <andaleebcse@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The pkg-config file contains all opencv libraries, not only the
neccessary ones.

This change makes it possible to use the libopencv-imgproc-dev Debian
package instead of libopencv-dev, saving about 200 MB of useless
build-dependencies.

In particular one doesn't need to install the parts of opencv that
depend on ffmpeg libraries.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

avutil/imgutils: Assert that the 2nd av_image_fill_linesizes() call in av_image_fill_linesizes() still succeeds

Fixes CID1271742
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This caused issues when seeking in some unusual MPEGTS files

This does obviously not work.

(Additions based on vf_crop.c.)

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Plays all known samples

Fixes some, but not all, of the threading fuzz crashes

This should return an error to the decoder if the struct it tried to getbuffer is dirty
Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

It makes easier looking at the difference with the generic code just
below.

We don't know which features are available when the user selects a
generic core, so don't disable anything by default and let the user
decide.
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.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: Paul B Mahol <onemda@gmail.com>