Stabilize audio timestamps

bonnieking · bonnieking · commit 5c4382a3cd87 · 2026-04-08T16:47:16.000-04:00
diff --git a/src/ac_training_lab/picam/device.py b/src/ac_training_lab/picam/device.py
@@ -232,6 +232,8 @@ def start_stream(ffmpeg_url, stream_key):
             "lavfi",
             "-i",
             "anullsrc=channel_layout=stereo:sample_rate=44100",
+            "-af",
+            "aresample=async=1:first_pts=0",
         ]
         + input_opts
         + [

Original file line number	Diff line number	Diff line change
`@@ -232,6 +232,8 @@ def start_stream(ffmpeg_url, stream_key):`
`232`	`232`	`"lavfi",`
`233`	`233`	`"-i",`
`234`	`234`	`"anullsrc=channel_layout=stereo:sample_rate=44100",`
	`235`	`+ "-af",`
	`236`	`+ "aresample=async=1:first_pts=0",`
`235`	`237`	`]`
`236`	`238`	`+ input_opts`
`237`	`239`	`+ [`