FFmpeg

93952 Commits

37 Branches

400 Tags

474 MiB

Tag: Branch: Tree: d1b4ea2f61

Commit Graph

Author	SHA1	Message	Date
James Almer	699d0c2a30	avcodec/av1_parser: don't abort parsing the first frame if extradata parsing fails The first frame contains the sequence header, which is needed to parse every following frame. This fixes parsing streams with broken extradata but correct packet data. Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
Andreas Rheinhardt	b8c45bbcbc	libavcodec/cbs: Stop needlessly reallocating the units array Currently, a fragment's unit array is constantly reallocated during splitting of a packet. This commit changes this: One can keep the units array by distinguishing between the number of allocated and the number of valid units in the units array. The more units a packet is split into, the bigger the benefit. So MPEG-2 benefits the most; for a video coming from an NTSC-DVD (usually 32 units per frame) the average cost of cbs_insert_unit (for a single unit) went down from 6717 decicycles to 450 decicycles (based upon 10 runs with 4194304 runs each); if each packet consists of only one unit, it went down from 2425 to 448; for a H.264 video where most packets contain nine units, it went from 4431 to 450. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>	6 years ago
James Almer	ebc3d04b8d	avcodec: add an AV1 parser Simple parser to set keyframes, frame type, structure, width, height, and pixel format, plus stream profile and level. Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago

Author

SHA1

Message

Date

James Almer

699d0c2a30

avcodec/av1_parser: don't abort parsing the first frame if extradata parsing fails

The first frame contains the sequence header, which is needed to parse every
following frame.

This fixes parsing streams with broken extradata but correct packet data.

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

6 years ago

Andreas Rheinhardt

b8c45bbcbc

libavcodec/cbs: Stop needlessly reallocating the units array

Currently, a fragment's unit array is constantly reallocated during
splitting of a packet. This commit changes this: One can keep the units
array by distinguishing between the number of allocated and the number
of valid units in the units array.

The more units a packet is split into, the bigger the benefit.
So MPEG-2 benefits the most; for a video coming from an NTSC-DVD
(usually 32 units per frame) the average cost of cbs_insert_unit (for a
single unit) went down from 6717 decicycles to 450 decicycles (based
upon 10 runs with 4194304 runs each); if each packet consists of only
one unit, it went down from 2425 to 448; for a H.264 video where most
packets contain nine units, it went from 4431 to 450.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>

6 years ago

James Almer

ebc3d04b8d

avcodec: add an AV1 parser

Simple parser to set keyframes, frame type, structure, width, height, and pixel
format, plus stream profile and level.

Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: James Almer <jamrial@gmail.com>

6 years ago

3 Commits (d1b4ea2f61754ed3ba524520e53024a8ca34feae)