Android Muxer 错误：已经有编解码器特定数据

问题描述

在多路复用器上调用 writeSampleData 时，我找不到解决错误“已经有编解码器特定数据”的方法。

有人知道这个错误的含义以及如何修复它吗？

我的片段

    public void encodeVideoFromBuffer() throws Exception {
        try {
            // creates encoder
            EncoderData encoderData = selectCodec(true);
            final MediaCodec enc = encoderData.getEncoder();

            final Mediamuxer mux = new Mediamuxer(mOutputPath,Mediamuxer.OutputFormat.muxer_OUTPUT_MPEG_4);

            final long STEP_PRESENTATION_TIME_US = (long)(1.0 * 1000 * 1000 / mFrameRate);

            enc.setCallback(new MediaCodec.Callback() {
                private int mIndexFrame = 0;
                private int mIndexTrack = -1;

                @Override
                public void onInputBufferAvailable(@NonNull MediaCodec codec,int index) {
                    if (mIndexFrame >= mBuffers.length) {
                        return;
                    }

                    int inputoptions = mIndexFrame < mBuffers.length - 1 ? MediaCodec.BUFFER_FLAG_CODEC_CONfig : MediaCodec.BUFFER_FLAG_END_OF_STREAM;

                    // https://www.programcreek.com/java-api-examples/?class=android.graphics.YuvImage&method=compresstoJpeg
                    BitmapFactory.Options options = new BitmapFactory.Options();
                    options.inPreferredConfig = Bitmap.Config.ARGB_8888;
                    byte[] dataToEncode = mBuffers[mIndexFrame++].array();
                    Bitmap bitmap = BitmapFactory.decodeByteArray(dataToEncode,dataToEncode.length,options);
                    Bitmap.createBitmap(bitmap,bitmap.getWidth(),bitmap.getHeight());

                    final int length = bitmap.getByteCount();
                    ByteBuffer dst = ByteBuffer.allocate(length);
                    bitmap.copyPixelsToBuffer(dst);

                    ByteBuffer inputBuffer = enc.getInputBuffer(index);
                    inputBuffer.put(dst.array());
                    enc.queueInputBuffer(index,length,index * STEP_PRESENTATION_TIME_US,0);
                }

                @Override
                public void onOutputBufferAvailable(@NonNull MediaCodec codec,int index,@NonNull MediaCodec.BufferInfo info) {
                    ByteBuffer encodedBuffer = enc.getoutputBuffer(index);

                    /*
                    if ((info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONfig) != 0) {
                        // The codec config data was pulled out and fed to the muxer when we got
                        // the INFO_OUTPUT_FORMAT_CHANGED status.  Ignore it.
                        info.size = 0;
                    }
                     */

                    if (info.size != 0) {
                        // adjust the ByteBuffer values to match BufferInfo (not needed?)
                        encodedBuffer.position(info.offset);
                        encodedBuffer.limit(info.offset + info.size);

                        mux.writeSampleData(mIndexTrack,encodedBuffer,info);
                    }

                    enc.releaSEOutputBuffer(index,false);

                    if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
                        enc.stop();
                        enc.release();

                        mux.stop();
                        mux.release();
                    }
                }

                @Override
                public void onError(@NonNull MediaCodec codec,@NonNull MediaCodec.CodecException e) {

                }

                @Override
                public void onOutputFormatChanged(@NonNull MediaCodec codec,@NonNull MediaFormat format) {
                    // Now that we have the Magic Goodies,start the muxer
                    MediaFormat test = codec.getoutputFormat();
                    mIndexTrack = mux.addTrack(format);
                    mux.start();
                }
            });

            enc.start();
        } catch (Exception e) {
            e.printstacktrace();
        }
}

解决方法

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