Changelog

This sections shows all the changelog which includes records of major changes, new features and bug fixes. All White papers can also be found for each version.

v2.1.2

• fixed an out-of-bound read in RPR
• improved exception handling in all external interface functions
• minor fixes

v2.1.1

• bugfixes (skipped RASLs, releasing internal Pictures)
• clean RPR & simdFilter
• improve makefile

v2.1

• initial native ARM SIMD implementation
• reworked RPL management
• finished CU=PU refactoring
• fixed affine motion clipping with sub-pictures

v2.0

• Added initial error resilience
• Removed vvdecapp from default installation
• Improved logging
• Minor efficiency improvements

v1.6

• Added an allocator API to reduce copying to application buffers
• Fixed VVC conformance (especially VPS handling, SbTMVP)
• Improved build (reduced exported symbols, fixed Xcode build)

Performance

Figure 2: Performance of the VVdeC v1.6.0. Each point represents a decoding of a bitstream created with the VTM-10.0 encoder using the JVET common test conditions, but for every second QP between 21 and 43. The wall-clock time used to calculate the frames per second was measured using the time utility.

v1.5

• Changed to a standard Clear BSD-3 license
• Added decoder reset functionality (API change)
• Updated build to ease android development
• Conformance bugfix to decoding slices using different ALF APS ids
• Fixed an occasional critical race condition
• Fixed many sanitizer problems
• WASM testsuite

v1.4

• Support for ARM and Win32 architectures, reported to work on riscv and powerpc
• Improved scheduling
• Performance improvements
• Refactoring and cleanups

v1.3

• Improved tune-in behavior
• 3x memory reduction
• MinGW support
• Cleanups
• Minor SIMD improvements
• WASM improvements (support for 32-bit browsers and theoretically UHD decoding)

Figure 1: Visualization of the memory reduction between version v1.2 and v1.3.

v1.2

• White paper: VVdeC v1.2
• Added WebAssembly build option
• Added and improved some SSE41 SIMD
• Minor improvements to ALF, DMVR and LMCS processing
• Library: added option to remove padding from YUV on output
• Bugfixes

v1.1.2

• Bugfixes (including conformance and memory leaks)

v1.1.1

• Cleanup of data structures
• Bugfixes (including conformance)

v1.1.0

• Sample application allows decoding to standard output
• Checking the actual output YUV MD5 sum in the test-suite, ensuring picture order is correct
• Bugfixes (including conformance)

v1.0

• White paper: VVdeC v1.0
• Support for sub-pictures, GDR, mixed slice types within a frame
• Lib-interface changed to pure C
• Support for all Main10 conformance bitstreams from [9]
• Improved handling of internal errors
• Encapsulated all internal classes in a namespace
• Minor cleanups and bugfixes

v0.2

• White paper: VVdeC v0.2
• Changed license to modified 3-clause BSD
• Memory reductions by removing obsolete look-up-tables
• Fixed syntax for multiple slices
• Fixed syntax for Decoded Picture Hash SEI
• Fixed and extended the conformance test set

v0.1.2

• Various bugfixes
• Fixed handling of multiple slices
• Fixed handling of multiple tiles
• Cleanup of CABACReader and VLCReader to align with spec [1]
• Extended the set of tested conformance sequences
• Changed semantics of --threads and --parsedelay parameters

v0.1.0

• Initial release

Performance

Figure 2: Performance of the first version of the VVdeC. Each point represents a decoding of a bitstream created with the VTM-10.0 encoder using the JVET common test conditions, but for every second QP between 21 and 43. The wall-clock time used to calculate the frames per second was measured using the time utility.