fix(transcribe): allow exact 4h duration and handle invalid metadata (#13561)

kelvinvelasquez-SDE · purcell · web-flow · commit 52d83813b354 · 2026-02-10T02:15:37.000+13:00
Co-authored-by: Steve Purcell &lt;steve@sanityinc.com&gt;
diff --git a/localstack-core/localstack/services/transcribe/provider.py b/localstack-core/localstack/services/transcribe/provider.py
@@ -319,7 +319,7 @@ def _run_transcription_job(self, args: tuple[TranscribeStore, str]) -> None:
             job["MediaFormat"] = SUPPORTED_FORMAT_NAMES[format]
             duration = ffprobe_output["format"]["duration"]
 
-            if float(duration) >= MAX_AUDIO_DURATION_SECONDS:
+            if float(duration) > MAX_AUDIO_DURATION_SECONDS:
                 failure_reason = "Invalid file size: file size too large. Maximum audio duration is 4.000000 hours.Check the length of the file and try your request again."
                 raise RuntimeError()
 
diff --git a/tests/aws/services/transcribe/test_transcribe.py b/tests/aws/services/transcribe/test_transcribe.py
@@ -459,7 +459,7 @@ def test_transcribe_error_invalid_length(self, transcribe_create_job, aws_client
         media_file = os.path.join(tempfile.gettempdir(), "audio_4h.mp3")
 
         run(
-            f"{ffmpeg_bin} -f lavfi -i anullsrc=r=44100:cl=mono -t 14400 -q:a 9 -acodec libmp3lame {media_file}"
+            f"{ffmpeg_bin} -f lavfi -i anullsrc=r=44100:cl=mono -t 14401 -q:a 9 -acodec libmp3lame {media_file}"
         )
         job_name = transcribe_create_job(audio_file=media_file)
 

Original file line number	Diff line number	Diff line change
`@@ -459,7 +459,7 @@ def test_transcribe_error_invalid_length(self, transcribe_create_job, aws_client`
`459`	`459`	`media_file = os.path.join(tempfile.gettempdir(), "audio_4h.mp3")`
`460`	`460`
`461`	`461`	`run(`
`462`		`- f"{ffmpeg_bin} -f lavfi -i anullsrc=r=44100:cl=mono -t 14400 -q:a 9 -acodec libmp3lame {media_file}"`
	`462`	`+ f"{ffmpeg_bin} -f lavfi -i anullsrc=r=44100:cl=mono -t 14401 -q:a 9 -acodec libmp3lame {media_file}"`
`463`	`463`	`)`
`464`	`464`	`job_name = transcribe_create_job(audio_file=media_file)`
`465`	`465`