From 4fc11a98a1a0afc126ca0ec45fecda6d6e81b3d9 Mon Sep 17 00:00:00 2001
From: tofunmi <tofunmi@google.com>
Date: Fri, 22 Dec 2023 08:51:26 -0800
Subject: [PATCH] ignore dropSamplesBeforeFirstVideoSample in audio-only
 streams

PiperOrigin-RevId: 593126632
---
 .../src/main/java/androidx/media3/transformer/MuxerWrapper.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java b/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
index 778ece356b..578b3065fe 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
@@ -348,6 +348,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
           /* extraFormat= */ "%s",
           /* extraArgs...= */ canWriteSample);
       if (dropSamplesBeforeFirstVideoSample
+          && contains(trackTypeToInfo, C.TRACK_TYPE_VIDEO)
           && firstVideoPresentationTimeUs != C.TIME_UNSET
           && presentationTimeUs < firstVideoPresentationTimeUs) {
         // Drop the buffer.
@@ -464,6 +465,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
   private boolean canWriteSample(@C.TrackType int trackType, long presentationTimeUs) {
     if (dropSamplesBeforeFirstVideoSample
         && trackType != C.TRACK_TYPE_VIDEO
+        && contains(trackTypeToInfo, C.TRACK_TYPE_VIDEO)
         && firstVideoPresentationTimeUs == C.TIME_UNSET) {
       // Haven't received the first video sample yet, so can't write any audio.
       return false;