DaalaTodo: Difference between revisions
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Martin.leese (talk | contribs) m (The only Level 1 Heading is the page title) |
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= Simple Things = | == Simple Things == | ||
* Overflow checking for allocations in od_state_ref_imgs_init(). | * Overflow checking for allocations in od_state_ref_imgs_init(). | ||
= Tuning = | == Tuning == | ||
* Quantization matrix | * Quantization matrix | ||
* Beta (activity masking) | * Beta (activity masking) | ||
| Line 11: | Line 11: | ||
* Better MV split flag rate estimates | * Better MV split flag rate estimates | ||
= Known broken/suboptimal = | == Known broken/suboptimal == | ||
* Block size decision | * Block size decision | ||
** Never tuned on inter | ** Never tuned on inter | ||
| Line 19: | Line 19: | ||
* Investigate bias introduced by coefficient scaling | * Investigate bias introduced by coefficient scaling | ||
= New work = | == New work == | ||
* VQ for inter frames, with codebook selected based on dim m | * VQ for inter frames, with codebook selected based on dim m | ||
| Line 29: | Line 29: | ||
* SPIHT as k-tokenizer | * SPIHT as k-tokenizer | ||
= Entropy coding = | == Entropy coding == | ||
* Make the Laplace vector encoder (aka k-tokenizer) faster | * Make the Laplace vector encoder (aka k-tokenizer) faster | ||
| Line 36: | Line 36: | ||
* Add SIMD to the decoder search | * Add SIMD to the decoder search | ||
= Visualization = | == Visualization == | ||
* Add ability to display decoder side information to player_example | * Add ability to display decoder side information to player_example | ||
| Line 47: | Line 47: | ||
** Show only one plane (Y, Cb, Cr) | ** Show only one plane (Y, Cb, Cr) | ||
= Infrastructure = | == Infrastructure == | ||
* Need a bugzilla instance for issue tracking | * Need a bugzilla instance for issue tracking | ||
= AreWeCompressedYet = | == AreWeCompressedYet == | ||
Bug tracker: https://github.com/tdaede/awcy/issues | Bug tracker: https://github.com/tdaede/awcy/issues | ||
* Huge batch run of all versions of Daala | * Huge batch run of all versions of Daala | ||
* Look at rd_tool options and improve | * Look at rd_tool options and improve | ||
* Add realtime constraint options for x265 | * Add realtime constraint options for x265 | ||
Revision as of 07:35, 24 October 2014
Simple Things
- Overflow checking for allocations in od_state_ref_imgs_init().
Tuning
- Quantization matrix
- Beta (activity masking)
- Inter band masking
- PVQ RDO
- Better MV cost estimates
- Better MC distortion metrics (SATD, some MSE/SATD hybrid, no-ref-aware, maybe table driven Theora-style, etc.)
- Better MV split flag rate estimates
Known broken/suboptimal
- Block size decision
- Never tuned on inter
- Not considering chroma
- Code quantizers on a log scale
- Re-order bitstream (e.g., don't code all MVs at the front, etc.)
- Investigate bias introduced by coefficient scaling
New work
- VQ for inter frames, with codebook selected based on dim m
- Motion vector "mask" based on previous frame
- Use coeff magnitude correlation for modelling
- Per SB/MB/block/something quantizer changes
- Variable Framerate support
- Dynamic frame size changes (without keyframes)
- SPIHT as k-tokenizer
Entropy coding
- Make the Laplace vector encoder (aka k-tokenizer) faster
- Add "skip-all remaining bands" flag
- Better encoding of the CfL sign
- Add SIMD to the decoder search
Visualization
- Add ability to display decoder side information to player_example
- Block size split decision
- Cost in bits per block (use log scale)
- No-ref and skip flags
- Mode information (if we signal intra)
- Motion vectors
- Display prediction residual
- Show only one plane (Y, Cb, Cr)
Infrastructure
- Need a bugzilla instance for issue tracking
AreWeCompressedYet
Bug tracker: https://github.com/tdaede/awcy/issues
- Huge batch run of all versions of Daala
- Look at rd_tool options and improve
- Add realtime constraint options for x265