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Merged
im-pingo merged 2 commits into from
Aug 28, 2026
Merged

test: synchronize AAC codec epoch transition #21

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822237c
test: synchronize AAC codec epoch transition
im-pingo Aug 28, 2026
b4bd869
docs: record muxer epoch test ordering
im-pingo Aug 28, 2026
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7 changes: 7 additions & 0 deletions docs/superpowers/plans/2026-08-28-ci-main-green.md
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Expand Up @@ -10,6 +10,13 @@

**Spec:** `docs/TECHNICAL-RISKS.md` and `AGENTS.md`.

The shared HTTP muxer codec-epoch regression must establish the direct AAC
output before injecting the next source codec. FLV and TS emit that output
immediately, while fMP4 requires the DTS=500 video boundary to flush its
fragment; the test therefore waits after that boundary and before G.711
input. This keeps the test independent of goroutine scheduling while still
covering the direct-to-transformed transition.

## Global Constraints

- Use Go 1.26 or newer and the repository's `audiocodec` build tag for the tagged baseline.
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5 changes: 5 additions & 0 deletions module/httpstream/muxer_worker_audiocodec_test.go
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Expand Up @@ -272,6 +272,11 @@ func TestSharedMuxersSwitchFromDirectAACToTransformedAudio(t *testing.T) {
avframe.MediaTypeVideo, avframe.CodecH264, avframe.FrameTypeInterframe,
500, 500, []byte{0, 0, 0, 2, 0x41, 0x05},
))
// Establish the direct-AAC epoch before introducing an incompatible
// source codec. The live and transformed readers share an unbuffered
// delivery channel, so writing both epochs back-to-back would let
// scheduler timing discard an initial direct frame.
packets = waitForMuxerPayloads(t, format, initData, reader, packets, directAAC)
writeG711MuxerFrames(stream, 1000, 20, 0xff)
stream.WriteFrame(avframe.NewAVFrame(
avframe.MediaTypeVideo, avframe.CodecH264, avframe.FrameTypeInterframe,
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