diff --git a/services/engine/codec/audio/audio_ffmpeg_adapter.cpp b/services/engine/codec/audio/audio_ffmpeg_adapter.cpp
index 9c520fbe7f339762ad4f3fda72fee8cf856f3200..37dccbcfa0d1d0b96fea942f0760464ee28ad8fb 100644
--- a/services/engine/codec/audio/audio_ffmpeg_adapter.cpp
+++ b/services/engine/codec/audio/audio_ffmpeg_adapter.cpp
@@ -234,11 +234,6 @@ std::shared_ptr<AVSharedMemoryBase> AudioFFMpegAdapter::GetInputBuffer(uint32_t
         AVCODEC_LOGE("adapter get input buffer error, call back not initlized .");
         return nullptr;
     }
-    if (index < 0) {
-        callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL);
-        AVCODEC_LOGE("index=%{public}zu error", index);
-        return nullptr;
-    }
 
     std::shared_ptr<AudioBufferInfo> result = worker_->GetInputBufferInfo(index);
     if (result == nullptr) {
@@ -265,12 +260,6 @@ int32_t AudioFFMpegAdapter::QueueInputBuffer(uint32_t index, const AVCodecBuffer
         return AVCodecServiceErrCode::AVCS_ERR_UNKNOWN;
     }
 
-    if (index < 0) {
-        callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL);
-        AVCODEC_LOGE("index=%{public}zu error", index);
-        return AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL;
-    }
-
     auto result = worker_->GetInputBufferInfo(index);
     if (result == nullptr) {
         callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY);
@@ -301,12 +290,6 @@ std::shared_ptr<AVSharedMemoryBase> AudioFFMpegAdapter::GetOutputBuffer(uint32_t
         return nullptr;
     }
 
-    if (index < 0) {
-        callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL);
-        AVCODEC_LOGE("index=%{public}zu error", index);
-        return nullptr;
-    }
-
     auto result = worker_->GetOutputBufferInfo(index);
     if (result == nullptr) {
         callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY);
@@ -331,15 +314,9 @@ int32_t AudioFFMpegAdapter::ReleaseOutputBuffer(uint32_t index)
         return AVCodecServiceErrCode::AVCS_ERR_UNKNOWN;
     }
 
-    if (index < 0) {
-        AVCODEC_LOGE("index=%{public}zu error", index);
-        callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL);
-        return AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL;
-    }
-
     auto outBufferInfo = worker_->GetOutputBufferInfo(index);
     if (outBufferInfo == nullptr) {
-        AVCODEC_LOGE("index=%{public}zu error", index);
+        AVCODEC_LOGE("index=%{public}u error", index);
         callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY);
         return AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY;
     }
@@ -347,7 +324,7 @@ int32_t AudioFFMpegAdapter::ReleaseOutputBuffer(uint32_t index)
 
     auto outBuffer = worker_->GetOutputBuffer();
     if (outBuffer == nullptr) {
-        AVCODEC_LOGE("index=%{public}zu error", index);
+        AVCODEC_LOGE("index=%{public}u error", index);
         callback_->OnError(AVCodecErrorType::AVCODEC_ERROR_INTERNAL, AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY);
         return AVCodecServiceErrCode::AVCS_ERR_NO_MEMORY;
     }