diff --git a/src/AudioFrame.cpp b/src/AudioFrame.cpp
index 18e108ee..0dbde45e 100644
--- a/src/AudioFrame.cpp
+++ b/src/AudioFrame.cpp
@@ -48,7 +48,7 @@ public:
         conv->setInAudioFormat(format);
         conv->setOutAudioFormat(other);
         conv->setInSampesPerChannel(samples_per_ch); //TODO
-        if (!conv->convert((const quint8**)planes.data())) {
+        if (!conv->convert((const quint8**)planes.constData())) {
             format = AudioFormat(); //invalid format
             return false;
         }
@@ -119,7 +119,7 @@ AudioFrame AudioFrame::clone() const
     for (int i = 0; i < nb_planes; ++i) {
         dst[i] = f.bits(i);
     }
-    av_samples_copy(dst.data(), d->planes.data(), 0, 0, samplesPerChannel(), d->format.channels(), (AVSampleFormat)d->format.sampleFormatFFmpeg());
+    av_samples_copy(dst.data(), d->planes.constData(), 0, 0, samplesPerChannel(), d->format.channels(), (AVSampleFormat)d->format.sampleFormatFFmpeg());
     return f;
 }
 
diff --git a/src/AudioOutputPortAudio.cpp b/src/AudioOutputPortAudio.cpp
index 0ea7ae7b..b645fe9f 100644
--- a/src/AudioOutputPortAudio.cpp
+++ b/src/AudioOutputPortAudio.cpp
@@ -121,7 +121,7 @@ bool AudioOutputPortAudio::write()
     }
 #endif
 #endif //KNOW_WHY
-    PaError err = Pa_WriteStream(d.stream, d.data.data(), d.data.size()/audioFormat().channels()/audioFormat().bytesPerSample());
+    PaError err = Pa_WriteStream(d.stream, d.data.constData(), d.data.size()/audioFormat().channels()/audioFormat().bytesPerSample());
     if (err == paUnanticipatedHostError) {
         qWarning("Write portaudio stream error: %s", Pa_GetErrorText(err));
         return   false;
diff --git a/src/AudioResamplerFF.cpp b/src/AudioResamplerFF.cpp
index a5dd018a..6f878f6b 100644
--- a/src/AudioResamplerFF.cpp
+++ b/src/AudioResamplerFF.cpp
@@ -68,7 +68,7 @@ bool AudioResamplerFF::convert(const quint8 **data)
     int out_size = d.out_samples_per_channel*size_per_sample_with_channels;
     if (out_size > d.data_out.size())
         d.data_out.resize(out_size);
-    uint8_t *out[] = {(uint8_t*)d.data_out.data()};
+    uint8_t *out[] = {(uint8_t*)d.data_out.constData()};
     //number of input/output samples available in one channel
     int converted_samplers_per_channel = swr_convert(d.context, out, d.out_samples_per_channel, data, d.in_samples_per_channel);
     d.out_samples_per_channel = converted_samplers_per_channel;
diff --git a/src/AudioResamplerLibav.cpp b/src/AudioResamplerLibav.cpp
index f24bd49a..fa595313 100644
--- a/src/AudioResamplerLibav.cpp
+++ b/src/AudioResamplerLibav.cpp
@@ -64,7 +64,7 @@ bool AudioResamplerLibav::convert(const quint8 **data)
     int out_size = d.out_samples_per_channel*size_per_sample_with_channels;
     if (out_size > d.data_out.size())
         d.data_out.resize(out_size);
-    uint8_t *out[] = {(uint8_t*)d.data_out.data()};
+    uint8_t *out[] = {(uint8_t*)d.data_out.constData()};
     //number of input/output samples available in one channel
     int converted_samplers_per_channel = swr_convert(d.context, out, d.out_samples_per_channel, const_cast<quint8**>(data), d.in_samples_per_channel);
     d.out_samples_per_channel = converted_samplers_per_channel;
diff --git a/src/ImageConverter.cpp b/src/ImageConverter.cpp
index 58a51301..ef7446d1 100644
--- a/src/ImageConverter.cpp
+++ b/src/ImageConverter.cpp
@@ -211,7 +211,7 @@ bool ImageConverter::prepareData()
     //picture的数据按PIX_FMT格式自动"关联"到 data
     avpicture_fill(
             &d.picture,
-            reinterpret_cast<uint8_t*>(d.data_out.data()),
+            (const uint8_t*)d.data_out.constData(),
             (AVPixelFormat)d.fmt_out,
             d.w_out,
             d.h_out
diff --git a/src/VideoDecoderCUDA.cpp b/src/VideoDecoderCUDA.cpp
index ccd28af3..b1f98c98 100644
--- a/src/VideoDecoderCUDA.cpp
+++ b/src/VideoDecoderCUDA.cpp
@@ -386,7 +386,7 @@ bool VideoDecoderCUDA::decode(const QByteArray &encoded)
     }
     CUVIDSOURCEDATAPACKET cuvid_pkt;
     memset(&cuvid_pkt, 0, sizeof(CUVIDSOURCEDATAPACKET));
-    cuvid_pkt.payload = (unsigned char *)encoded.data();
+    cuvid_pkt.payload = (unsigned char *)encoded.constData();
     cuvid_pkt.payload_size = encoded.size();
     cuvid_pkt.flags = CUVID_PKT_TIMESTAMP;
     cuvid_pkt.timestamp = 0;// ?
diff --git a/src/VideoFrame.cpp b/src/VideoFrame.cpp
index af159686..870f10aa 100644
--- a/src/VideoFrame.cpp
+++ b/src/VideoFrame.cpp
@@ -75,7 +75,7 @@ public:
         conv->setOutFormat(fffmt);
         conv->setInSize(width, height);
         conv->setOutSize(width, height);
-        if (!conv->convert(planes.data(), line_sizes.data())) {
+        if (!conv->convert(planes.constData(), line_sizes.constData())) {
             format.setPixelFormat(VideoFormat::Format_Invalid);
             return false;
         }
@@ -349,7 +349,7 @@ void VideoFrame::init()
     AVPixelFormat fff = (AVPixelFormat)d->format.pixelFormatFFmpeg();
     //int bytes = avpicture_get_size(fff, width(), height());
     //d->data.resize(bytes);
-    avpicture_fill(&picture, reinterpret_cast<uint8_t*>(d->data.data()), fff, width(), height());
+    avpicture_fill(&picture, (const uint8_t*)d->data.constData(), fff, width(), height());
     setBits(picture.data);
     setBytesPerLine(picture.linesize);
 }