Google WebM VP8/VP9 video graphics codecs encoders and decoders
library reference implementation.
For more information see the project home page:
https://github.com/webmproject/libvpx/
The following packages have been upgraded in the Cygwin distribution:
- libvpx-utils 1.15.1
- libvpx-doc 1.15.1
- libvpx-devel 1.15.1
and the following package added with this release ABI change:
- libvpx11 1.15.1
deprecating the previous release:
- libvpx9 1.14.1
For changes since the last Cygwin release, see below or
/usr/share/doc/libvpx/CHANGELOG after installation:
https://github.com/webmproject/libvpx/releases/tag/v1.15.0
2025-01-09 1.15.1 Wigeon Duck
This release bumps up the SO major version and fixes the language about
ABI compatibility in the previous release changelog.
2024-10-22 1.15.0
This release includes new codec control for key frame filtering, more Neon
optimizations, improvements to RTC encoding and bug fixes.
- Upgrading:
This release is ABI *incompatible* with the previous release.
It is strongly recommended to skip this release and upgrade to v1.15.1 since
the shared object was versioned incorrectly, as shown in
https://issues.webmproject.org/issues/384672478.
Temporal filtering improvement that can be turned on with the new codec
control VP9E_SET_KEY_FRAME_FILTERING, which gives 1+% BD-rate saving with
minimal encoder time increase.
libwebm is upgraded to libwebm-1.0.0.31-10-g3b63004
- Enhancement:
Neon optimization speed up
1-3% speed up across speed 5 to 10 for RTC
3% speed up for speed 0 and 1 for VoD in standard bitdepth
3% and 7% speed up for speed 0 and 1 respectively for VoD in high bitdepth
Scene detection is allowed for all RTC speeds (>=5)
Support profile guided optimizations
Delta quantization parameters for UV channels for vp8 is supported in RTC
rate control library
Rate control parameters are reset and maximum QP is enforced on scene
changes in SVC when there is no inter-layer prediction
- Bug fixes:
Fix to Uninitialized scalar variable in `vp9_rd_pick_inter_mode_sb()`
Fix to Integer-overflow in `resize_multistep`
Fix to Heap-buffer-overflow in `vpx_sad64x64_avx2`
Fix to Crash in `vpx_sad8x8_sse2`
Fix to Assertion in `write_modes`
Support profile guided optimizations
Fix to Integer-overflow in `encode_frame_to_data_rate`
Fix to Integer-overflow in `vp9_svc_check_reset_layer_rc_flag`
Fix to core dump error from /usr/bin/tools/tiny_ssim --help
Fix to use-of-uninitialized-value in `vp9_setup_tpl_stats`
Fix to Undefined-shift in `vp9_cyclic_refresh_setup`
Fix to redundant `&& __GNUC__` preproc check
Fix to valgrind warning in EncodeAPI.OssFuzz69906
Fix to Index-out-of-bounds in `vp8_rd_pick_inter_mode`
Fix to Integer-overflow in `vp8_pick_frame_size`
Fix to Use-of-uninitialized-value in `vpx_codec_peek_stream_info`
Fix to log clutters with the message "Warning: Desired height too large"
Fix to Integer-overflow in `vp9_svc_adjust_avg_frame_qindex`
Fix to integer overflows caused by huge target bitrate, frame rate, or
g_timebase numerator or denominator
Fix to missing license headers
Fix to build failure for Android Armv7
Fix to integer overflows in image helpers
Fix to Integer-overflow in `vp9_calc_iframe_target_size_one_pass_cbr`
Fix to Heap-buffer-overflow in `vp9_pick_inter_mode`
Fix to Segv in `vp9_multi_thread_tile_init`
Fix to Use-of-uninitialized-value in `vp9_row_mt_sync_mem_dealloc`
Fix to Crash in `mbloop_filter_vertical_edge_c`
Fix to Check failed in CheckUnwind
Fix to Heap-buffer-overflow in `write_modes_b` and `vpx_write`
Fix to Possible signed integer overflow found in `vpx_codec_encode`
Fix to build conflicts between Abseil and libaom/libvpx in Win ARM64 builds
Fix to build failures on aarch64
Fix to Data race in libvpx ARM NEON
Fix to Heap-buffer-overflow in `scale_plane_1_to_2_phase_0`
Fix to integer overflow in `encode_mb_row`
Fix to Floating-point-exception in `vp8_pick_frame_size`
Fix to Heap-buffer-overflow in `vp9_enc_setup_mi`
Fix to build failure with --target=arm64-win64-vs17
Fix to heap-buffer-overflow write in `vpx_img_read()`
Fix to C vs armv8-linux-gcc encode mismatches for `y4m_360p_10bit_input`
Fix to Null-dereference READ in `ml_predict_var_rd_partitioning`
Fix to Heap-buffer-overflow in `vpx_scaled_2d_ssse3`
Fix to Crash in `convolve_horiz`
Fix to Ill in `vpx_scaled_2d_ssse3`
Fix to Global-buffer-overflow in `cost_coeffs`
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