1
0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-18 03:19:31 +02:00
Commit Graph

3 Commits

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>
2019-03-24 18:26:49 -03:00
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>
2019-02-25 21:40:13 +00:00
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>
2018-10-03 20:48:49 -03:00