[ffmpeg][low delay B][query][enhancement] add query support for prediction direction caps #721
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Hi @XinfengZhang , is there any update for this? |
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link the pr: |
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reopen it, because also need to change for HEVC |
fulinjie
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Apr 13, 2020
Low delay B-frame is supported on ICL+ platform. For low power encoding, low_delay_b should be enabled by default. Low delay B: <http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html> There is an on-going work in libva and media-driver to add querys support for low delay b, would add it once it's ready: intel/libva#220 intel/libva#364 intel/media-driver#721 Signed-off-by: Linjie Fu <linjie.fu@intel.com>
fulinjie
added a commit
to fulinjie/ffmpeg
that referenced
this issue
Apr 14, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
Allows forward-predict only for all B frames, L0 == L1, supported
on ICL+ platforms, required by VDENC(low_power).
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allows bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
fulinjie
added a commit
to fulinjie/ffmpeg
that referenced
this issue
Apr 18, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B, allows forward-predict only for all B frames, L0 == L1, supported
on ICL+ platforms, required by VDENC(low_power).
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
fulinjie
added a commit
to fulinjie/ffmpeg
that referenced
this issue
Apr 21, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, supported on ICL+ platforms, required by
VDENC(low_power).
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
fulinjie
added a commit
to fulinjie/ffmpeg
that referenced
this issue
Apr 21, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
May 15, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
May 25, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
fulinjie
added a commit
to fulinjie/ffmpeg
that referenced
this issue
Jun 1, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
liuyinhangx
pushed a commit
to liuyinhangx/ffmpeg-cartwheel
that referenced
this issue
Jul 14, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
Sep 10, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
Oct 19, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
Nov 2, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
Nov 2, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/ffmpeg-cartwheel
that referenced
this issue
Nov 9, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg-cartwheel
that referenced
this issue
Nov 26, 2020
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
wenbinc-Bin
pushed a commit
to wenbinc-Bin/ffmpeg-ci
that referenced
this issue
Jan 6, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
wenbinc-Bin
pushed a commit
to wenbinc-Bin/ffmpeg-ci
that referenced
this issue
Jan 6, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Mar 11, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Apr 30, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Jun 9, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
changchingyew
pushed a commit
to changchingyew/FFmpeg
that referenced
this issue
Aug 17, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Aug 26, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Aug 27, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Aug 27, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Aug 27, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
xhaihao
pushed a commit
to xhaihao/FFmpeg
that referenced
this issue
Oct 21, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
changchingyew
pushed a commit
to changchingyew/FFmpeg
that referenced
this issue
Oct 22, 2021
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg
that referenced
this issue
Mar 1, 2022
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg
that referenced
this issue
Mar 22, 2022
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
feiwan1
pushed a commit
to feiwan1/ffmpeg
that referenced
this issue
May 24, 2022
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
This patch will be removed after
intel/media-driver#1382 is merged.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
tong1wu
pushed a commit
to tong1wu/ffmpeg
that referenced
this issue
Jun 6, 2022
Allow user to choose between I/P/B frames:
- normal
Ordinary IB..BPB..B GOP structure.
- low delay B-frames:
IB..B GOP structure, P frames replaced by B frames, allows forward-predict
only for all B frames, L0 == L1, required by VDENC(low_power),
optional for VMEPAK.
- reference B-frames:
Convert P-frames to low delay B-frames, normal B frames still have
2 different ref_lists and allow bi-prediction.
Low delay B:
<http://what-when-how.com/Tutorial/topic-397pct9eq3/High-Efficiency-Video-Coding-HEVC-288.html>
There is an on-going work in libva and media-driver to add querys
support for low delay b, would add it once it's ready:
intel/libva#220
intel/libva#364
intel/media-driver#721
Rebased a bit for this internal branch.
This patch will be removed after
intel/media-driver#1382 is merged.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
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Thanks to the help in libva and since PR for prediction direction caps report is merged:
intel/libva@f094de3
we could now step further and seek for query support in media-driver.
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