Back to project page android-transcoder.
The source code is released under:
Apache License
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/* * Copyright (C) 2014 Yuya Tanaka// ww w . ja va 2 s.c o m * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.ypresto.androidtranscoder.format; import android.media.MediaCodecInfo; import android.media.MediaFormat; import android.util.Log; class Android720pFormatStrategy implements MediaFormatStrategy { private static final String TAG = "Android720pFormatStrategy"; private static final int LONGER_LENGTH = 1280; private static final int SHORTER_LENGTH = 720; private static final int DEFAULT_BITRATE = 8000 * 1000; // From Nexus 4 Camera in 720p private final int mBitRate; public Android720pFormatStrategy() { mBitRate = DEFAULT_BITRATE; } public Android720pFormatStrategy(int bitRate) { mBitRate = bitRate; } @Override public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) { int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH); int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT); int longer, shorter, outWidth, outHeight; if (width >= height) { longer = width; shorter = height; outWidth = LONGER_LENGTH; outHeight = SHORTER_LENGTH; } else { shorter = width; longer = height; outWidth = SHORTER_LENGTH; outHeight = LONGER_LENGTH; } if (longer * 9 != shorter * 16) { throw new OutputFormatUnavailableException("This video is not 16:9, and is not able to transcode. (" + width + "x" + height + ")"); } if (shorter <= SHORTER_LENGTH) { Log.d(TAG, "This video is less or equal to 720p, pass-through. (" + width + "x" + height + ")"); return null; } MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight); // From Nexus 4 Camera in 720p format.setInteger(MediaFormat.KEY_BIT_RATE, mBitRate); format.setInteger(MediaFormat.KEY_FRAME_RATE, 30); format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 3); format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface); return format; } @Override public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) { return null; } }