Audio/Video pipeline waiting state during compression on Flutter

[shinesoftware]

While compressing a video using video_compress: ^3.1.4 in my Flutter project, I noticed that the audio and video pipelines sometimes enter a waiting state. The compression does not fail completely but seems stalled at the reader step for both audio and video streams.

Steps to Reproduce
1. Use video_compress: ^3.1.4 in a Flutter project.
2. Attempt to compress a video with audio.
3. Observe the logs during compression.

Expected Behavior
The video should compress without the reader entering a persistent waiting state.

Actual Behavior / Logs

V/Pipeline(Audio)(25613): execute(): starting. head=0 steps=6 remaining=6
V/MediaMetadataRetriever(25613): extractMetadata(9)
I/Decoder(AUDIO,4)(25613): buffer() failed. dequeuedInputs=0 dequeuedOutputs=5
V/Reader (25613): Returning State.Wait because buffer is null.
V/Pipeline(Audio)(25613): execute(): step Reader (#0/6) is waiting. headState=State.Ok(kotlin.Unit) headIndex=0
V/Pipeline(Video)(25613): execute(): starting. head=0 steps=7 remaining=7
V/MediaMetadataRetriever(25613): extractMetadata(9)
I/Reader (25613): Returning State.Wait because source can't read VIDEO right now.
V/Pipeline(Video)(25613): execute(): step Reader (#0/7) is waiting. headState=State.Ok(kotlin.Unit) headIndex=0
V/Segment(VIDEO,0)(25613): canAdvance(): state=State.Wait
V/Segments(25613): hasNext(VIDEO): segment=com.otaliastudios.transcoder.internal.Segment@f2a8767 lastIndex=0 canAdvance=true

Environment:
• Flutter version: 3.27.1 ([user-branch] channel)
• Dart version: 3.1.1
• video_compress: ^3.1.4
• Platform: Android (logs provided are from Android)
• Device: macOS 14.5, darwin-arm64

Additional Notes
• Audio pipeline shows buffer() failed with dequeuedInputs=0, dequeuedOutputs=5.
• Video pipeline reader returns State.Wait because source cannot read video immediately.
• This seems related to media metadata retrieval or reading segments.