Issues

• Add OpenH264 to OSS Scanner

  cisco/openh264#4065 · Filter by author tysmith opened on Oct 26, 2026

• Decoder: WelsReorderRefList2 never finds a long-term reference marked by MMCO 3 or 6

  cisco/openh264#4064 · Filter by author wspl opened on Oct 23, 2026
  1

• OpenH264 decoder: unbounded FMO slice-group run length drives a heap out-of-bounds write in the macroblock allocation map

  cisco/openh264#4061 · Filter by author Haind03 opened on Oct 22, 2026

• FRECUENCIA NUEVA CLARIDAD AMOR RENDICIÓN AMOR PROPIO

  cisco/openh264#4044 · Filter by author FRECUENCIANUEVA opened on Oct 3, 2026

• Threaded decoding of res/Error_I_P.264 stalls at odd thread counts from three

  cisco/openh264#4032 · Filter by author tyan0 opened on Sep 24, 2026

• Threaded decoding deadlocks when PrefetchPic() runs out of picture buffers

  cisco/openh264#4027 · Filter by author tyan0 opened on Sep 23, 2026
  1

• aman

  cisco/openh264#4024 · Filter by author amanullahamanalmas-star opened on Sep 21, 2026

• DecodeMbAuxTest.WelsIDctFourT4Rec_{lasx,mmi} fail on about 3% of input draws

  cisco/openh264#4011 · Filter by author tyan0 opened on Sep 10, 2026
  2

• Multi-threaded decoding is non-deterministic and non-conformant

  cisco/openh264#4005 · Filter by author tyan0 opened on Sep 4, 2026
  10

• gloria zuccaro

  cisco/openh264#3979 · Filter by author regioninsular-tech opened on Aug 14, 2026

• Severe performance degradation in WebRTC screen sharing on Firefox with OpenH264

  cisco/openh264#3970 · Filter by author Mayni-1337 opened on Jul 26, 2026
  5

• Decoder deadlocks when DECODER_OPTION_NUM_OF_THREADS is set after Initialize

  cisco/openh264#3969 · Filter by author adamroach opened on Jul 23, 2026

• Heap Buffer Overflow in Scene Change Detection causes Out-of-Bounds Read

  cisco/openh264#3926 · Filter by author OwenSanzas opened on Jan 27, 2026
  6

• Heap Buffer Overflow in NeedErrorCon causes Out-of-Bounds Read

  cisco/openh264#3925 · Filter by author OwenSanzas opened on Jan 27, 2026
  2

• Free version of OpenH264 (non-encumbered by patents)

  cisco/openh264#3923 · Filter by author abitrolly opened on Jan 7, 2026
  7

• Hardcoded and outdated version information in resource file

  cisco/openh264#3921 · Filter by author Abderrahmane-MERSTANI opened on Jan 4, 2026

• openh264 fails to decode on Linux

  cisco/openh264#3913 · Filter by author sofiageo opened on Nov 20, 2025

• cant run

  cisco/openh264#3912 · Filter by author SignumFunction opened on Nov 17, 2025

• openahs256

  cisco/openh264#3910 · Filter by author itaconstrucciones0001-wq opened on Nov 8, 2025
  1

• universal binaries on apple broken since 3668daf135dea7d18737b01ce32774a7a2ffba32

  cisco/openh264#3904 · Filter by author akallabeth opened on Oct 14, 2025

• Error 403 while downloading from ciscobinary.openh264.org

  cisco/openh264#3900 · Filter by author AlexFed1104 opened on Oct 2, 2025
  5

• Illegal discriminative geoblock of entire countries HAS BROKEN INSTALLATION AND UPDATES of many apps on Steam OS and other distos!

  cisco/openh264#3889 · Filter by author v00d00m4n opened on Aug 5, 2025
  26

• The same issue. Also from Ukraine.

  cisco/openh264#3888 · Filter by author pavelkrivoseev225 opened on Aug 2, 2025
  3

• High cpu usage when using openh264 built by meson in GStreamer.

  cisco/openh264#3876 · Filter by author pwjworks opened on May 15, 2025

• Support for dynamic AVX2 dispatch to avoid SIGILL on non-AVX2 CPUs

  cisco/openh264#3875 · Filter by author Laky-64 opened on May 3, 2025