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Stream history: in-memory H.264+AAC ring via ffmpeg (opt-in CMake toggle) - #1563

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Gin890 wants to merge 40 commits into

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stream-history-ffmpeg-ring

Open

Stream history: in-memory H.264+AAC ring via ffmpeg (opt-in CMake toggle)#1563
Gin890 wants to merge 40 commits into
mainfrom
stream-history-ffmpeg-ring

Commits on Oct 18, 2026
- Add ffmpeg-based in-memory stream history ring (opt-in via PA_STREAM_HISTORY_FFMPEG).
  
  Gin890
  authored and
  jw098
  committed
  15a6130
- Fix several bugs in the ffmpeg stream history ring found during review.
  
  Gin890
  authored and
  jw098
  committed
  2981c47
- Replace the libx264 video fallback with ffmpeg's built-in LGPL mpeg4 encoder.
  
  Gin890
  authored and
  jw098
  committed
  1f0356d
- add ffmpeg library files
  jw098
  committed
  770184a
- fix build
  jw098
  committed
  aa464a4
- Fix the stream history ring save path and make it build against ffmpeg 5.1-8.x
  
  Gin890
  authored and
  jw098
  committed
  f7d2072
- Clarify the stream history option description (video falls back to LGPL MPEG-4)
  
  Gin890
  authored and
  jw098
  committed
  a4b2609
- fix build
  jw098
  committed
  e5635a4
- fix ffmpeg EAGAIN sign convention
  jw098
  committed
  5325a09
- install ffmpeg libraries for mac/linux CI
  jw098
  committed
  a1f5092
- attempt to fix mac CI
  jw098
  committed
  17f40c7
- more attempts to fix Linux/mac CI.
  jw098
  committed
  8b0ced9
- fix CI
  jw098
  committed
  86b0276
- fix CI
  jw098
  committed
  85e6cba
- fix CI
  jw098
  committed
  9edd736
- Fix ffmpeg C++ linkage, C4458 under /W4 /WX, and mac/linux pkg-config detection
  
  Gin890
  authored and
  jw098
  committed
  5000ea8
- fix build
  jw098
  committed
  55cdec2
- Stop keying ffmpeg API differences on version macros; detect the actual API
  
  Gin890
  authored and
  jw098
  committed
  e751eb5
- Stream history: drop the dual ffmpeg API-generation support; enforce ffmpeg 7.x
  
  Gin890
  authored and
  jw098
  committed
  ec5688b
- Stream history: enforce the ffmpeg 5.1 floor instead of 7.x
  
  Gin890
  authored and
  jw098
  committed
  d474a7b
- Stream history: fall back to the next video encoder if it fails at runtime
  
  Gin890
  authored and
  jw098
  committed
  1c874d5
- Stream history: never free a failed hardware encoder context
  
  Gin890
  authored and
  jw098
  committed
  96f9a4f
- fix build
  jw098
  committed
  8fe3b91
- Stream history: fix pixel format selection on ffmpeg 7.0+, don't poison open failures
  
  Gin890
  authored and
  jw098
  committed
  4f68da9
- Stream history: use a mpeg4-compatible timebase and set the frame rate
  
  Gin890
  authored and
  jw098
  committed
  ecfef48
- Stream history: mux from codec-parameter snapshots, not live contexts
  
  Gin890
  authored and
  jw098
  committed
  604f062
- Stream history: convert H.264 from Annex B to AVCC when muxing MP4
  
  Gin890
  authored and
  jw098
  committed
  6cbfbfe
- Stream history: open the output file before avformat_write_header
  
  Gin890
  authored and
  jw098
  committed
  747ed24
- Stream history: write a valid avcC record when muxing MP4
  
  Gin890
  authored and
  jw098
  committed
  cebee30
- Stream history: keep video dts strictly increasing when muxing to file
  
  Gin890
  authored and
  jw098
  committed
  8cacf0c
- Stream history: set the AAC encoder's sample format (FLTP) and de-interleave into planes
  
  Gin890
  authored and
  jw098
  committed
  50f644b
- Stream history: initialize the audio resampler before use
  
  Gin890
  authored and
  jw098
  committed
  438d81b
- Stream history: stamp MKV packets in milliseconds and interleave the writes
  
  Gin890
  authored and
  jw098
  committed
  62d7b70
- Stream history: remember every runtime-failed video encoder, not just the last
  
  Gin890
  authored and
  jw098
  committed
  4ddb3d6
- Stream history: drop the unused <libavutil/opt.h> include
  
  Gin890
  authored and
  jw098
  committed
  fe5bae1
- Stream history: log the first video packet's bytes at mux time
  
  pa-devbot
  authored and
  jw098
  committed
  694cefd
- adjust visibility of StreamHistory Options, depending on whether ffmpeg is enabled.
  jw098
  committed
  efd0527
- minor change
  jw098
  committed
  3d7ab99
- Stream history: add the Media Foundation encoder (h264_mf) to the Windows candidates
  
  pa-devbot
  authored and
  jw098
  committed
  762154b
- add info about the ffmpeg library
  jw098
  committed
  dc747ed

Commits

Commits on Oct 18, 2026