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feat(audio): Compressed voice recordings with @braintrust/audio #2658

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Merged
David Elner (delner) merged 4 commits into from
Oct 27, 2026
Merged

feat(audio): Compressed voice recordings with @braintrust/audio #2658

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7919f68
Added: @braintrust/audio package with Opus and Ogg codecs
delner Oct 27, 2026
da01e23
Added: Compress LiveKit recordings by default with @braintrust/audio
delner Oct 27, 2026
9f24d0c
Changed: Report Opus settings as attributes
delner Oct 27, 2026
0d6f894
Removed: BRAINTRUST_AUDIO_COMPRESSION env var
delner Oct 27, 2026
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6 changes: 6 additions & 0 deletions .changeset/audio-compression.md
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@@ -0,0 +1,6 @@
---
"@braintrust/audio": minor
"braintrust": minor
---

feat(audio): Compressed voice recordings with `@braintrust/audio`
30 changes: 30 additions & 0 deletions .github/workflows/checks.yaml
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Expand Up @@ -417,6 +417,34 @@ jobs:
working-directory: integrations/temporal-js
run: pnpm run test

audio:
runs-on: ubuntu-latest
timeout-minutes: 15
strategy:
fail-fast: false
matrix:
node-version: [20, 22, 24, 26]
env:
ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.node-version == 20 && 'true' || '' }}
steps:
- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
- uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
with:
node-version: ${{ matrix.node-version }}
- name: Setup pnpm
uses: pnpm/action-setup@ea17c68df8912ef543352723c149a84f56e3d413 # v6.1.0
- name: Install dependencies
run: pnpm install --frozen-lockfile
- name: Build braintrust
working-directory: js
run: pnpm run build
- name: Build @braintrust/audio
working-directory: integrations/audio
run: pnpm run build
- name: Run @braintrust/audio tests
working-directory: integrations/audio
run: pnpm run test

templates-nunjucks-js:
runs-on: ubuntu-latest
timeout-minutes: 15
Expand Down Expand Up @@ -530,6 +558,7 @@ jobs:
- js-smoke-discover
- js-smoke-test
- temporal-js
- audio
- templates-nunjucks-js
- otel-js
- js-zod-versions
Expand Down Expand Up @@ -563,6 +592,7 @@ jobs:
check_result "js-smoke-discover" "${{ needs.js-smoke-discover.result }}"
check_result "js-smoke-test" "${{ needs.js-smoke-test.result }}"
check_result "temporal-js" "${{ needs.temporal-js.result }}"
check_result "audio" "${{ needs.audio.result }}"
check_result "templates-nunjucks-js" "${{ needs.templates-nunjucks-js.result }}"
check_result "otel-js" "${{ needs.otel-js.result }}"
check_result "js-zod-versions" "${{ needs.js-zod-versions.result }}"
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1 change: 1 addition & 0 deletions e2e/package.json
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Expand Up @@ -9,6 +9,7 @@
"test:e2e:cassettes": "node ./scripts/run-e2e-tests.mjs --check-cassettes"
},
"devDependencies": {
"@braintrust/audio": "workspace:^",
"@braintrust/deepseek-harness": "workspace:^",
"@braintrust/langchain-js": "workspace:^",
"@braintrust/otel": "workspace:^",
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-audio.span-tree.json
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-audio.span-tree.txt
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Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-interrupted.span-tree.json
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-interrupted.span-tree.txt
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Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-audio.span-tree.json
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-audio.span-tree.txt
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Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
Expand Down
9 changes: 4 additions & 5 deletions ...narios/livekit-instrumentation/__snapshots__/livekit-v1-latest-interrupted.span-tree.json
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9 changes: 4 additions & 5 deletions ...enarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-interrupted.span-tree.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
Expand Down
9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-order.span-tree.json
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9 changes: 4 additions & 5 deletions e2e/scenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-order.span-tree.txt
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Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
Expand Down
9 changes: 4 additions & 5 deletions ...cenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-recovered.span-tree.json
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9 changes: 4 additions & 5 deletions ...scenarios/livekit-instrumentation/__snapshots__/livekit-v1-latest-recovered.span-tree.txt
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Expand Up @@ -3,8 +3,8 @@ span_tree:
input: {
"audio": {
"call-0000": {
"content_type": "audio/pcm",
"filename": "call-0000.pcm",
"content_type": "audio/ogg",
"filename": "call-0000.ogg",
"key": "<uuid:1>",
"type": "braintrust_attachment"
}
Expand All @@ -20,10 +20,9 @@ span_tree:
"channel_count": 2,
"duration_ms": 0,
"id": "<span:1>",
"mime_type": "audio/pcm",
"mime_type": "audio/ogg",
"recording_group_id": "call",
"sample_format": "s16le",
"sample_rate_hz": 24000,
"sample_rate_hz": 48000,
"sources": [
{
"boundary": "local_audio_output",
Expand Down
9 changes: 4 additions & 5 deletions .../livekit-instrumentation/__snapshots__/livekit-v1-latest-streaming-cascade.span-tree.json
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