Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket4329
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: CID1257657
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on commit 4ae15605Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

This avoids the need to dereference MpegEncContext->pb if it is
already available outside h263p_encode_umotion()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This avoids the need to dereference MpegEncContext->pb if it is
already available outside ff_h263_encode_motion()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

About 9 cpu cycle faster mpeg4_decode_mb()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

If avio_read fails, the buffer can contain uninitialized data.

This fixes 'Conditional jump or move depends on uninitialised value(s)'
valgrind warnings.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

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

Otherwise the loop can take a lot of time if num_descr is very large.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fewer chances for rounding differences between platforms is better
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

reduces risk for rounding differences between platforms
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes the video timebase as well
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Floats are not bitexact
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

The libwebpmux pkg-config file already has an explicit dependecy on libwebp >= 0.2.0.
Also remove the warning and silently disable the anim encoder when libwebpmux is not new enough.
This is more in line with other library components, like libvpx-vp9
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

This fixes decoding the first frame of some dts files
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes DTS detection of b2429e5ba9.dts
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

If it fails, the buffers can be (partially) uninitialized.

This fixes 'Conditional jump or move depends on uninitialised value(s)'
valgrind warnings.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

WebPAnimEncoder API is a combination of encoder (WebPEncoder) and muxer
(WebPMux). It performs several optimizations to make it more efficient
than the combination of WebPEncode() and native ffmpeg muxer.

When WebPAnimEncoder API is used:
- In the encoder layer: we use WebPAnimEncoderAdd() instead of
  WebPEncode().
- The muxer layer: works like a raw muxer.

On the other hand, when WebPAnimEncoder API isn't available, the old code is
used as it is:
- In the codec layer: WebPEncode is used to encode each frame
- In the muxer layer:  ffmpeg muxer is used
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Prevents read of uninitialized variable

Based on patch by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4e17946f':
  mpegvideo: Rework various functions not to use MpegEncContext directly

Conflicts:
	libavcodec/mpegvideo.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a3f4c930':
  mpegvideo: Have ff_mpeg_ref_picture use AVCodecContext directly

Conflicts:
	libavcodec/mpegvideo.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd5280455':
  mpegvideo: Have ff_mpeg_unref_picture use AVCodecContext directly

Conflicts:
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c

The memset is left in place
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6f54dc43':
  mpegvideo: Drop stream_codec_tag
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9c1db92a':
  mpegvideo: Drop err_recognition

Conflicts:
	libavcodec/h263dec.c
	libavcodec/ituh263dec.c
	libavcodec/mpeg4video.h
	libavcodec/mpeg4videodec.c
	libavcodec/msmpeg4dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '848e86f7':
  mpegvideo: Drop flags and flags2

Conflicts:
	libavcodec/mpeg12dec.c
	libavcodec/mpeg12enc.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/mpegvideo_motion.c
	libavcodec/ratecontrol.c
	libavcodec/vc1_block.c
	libavcodec/vc1_loopfilter.c
	libavcodec/vc1_mc.c
	libavcodec/vc1dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Niklesh <niklesh.lalwani@iitb.ac.in>

This skips setting the memory to 0 but allows for reuse on different
contextes. Oracle did not report any unsual activity because of it.

The field is unused.