// decoders to use a "mundane" format, so we just give a pass on proprietary formats. In YUV this is a dull green. you should use a Surface for raw video data to improve codec performance //from https://github.com/vecio/MediaCodecDemo, // We shouldn't stop the playback at this point, just pass the EOS, // flag to decoder, we will get it again from the, "We can't use this buffer but render it due to the API limit, ", // We use a very simple clock to keep the video FPS, or the video, // All decoded frames have been rendered, we can stop playing now. Why should you not leave the inputs of unused gates floating with 74LS series logic? As for decoding you can create some surface in your UI and pass it to decoder using configure() it will allow the decoder to render a decoded frame into the surface so you won't need to copy decoded data from output buffers of decoder the only thing you should do is to pass To review, open the file in an editor that reveals hidden Unicode characters. 503), Fighting to balance identity and anonymity on the web(3) (Ep. I am now attempting to use MediaCodec as an encoder. How do I use Surface to improve encode or decode performance? // our desired properties. Android, Android encoding using MediaCodec and a Surface Base Android studio 4.1.1; Use Android MediaCodec. You can send the output of the decoder to a single Surface. Surfaces are the "producer" side of a producer-consumer arrangement. It includes a collection of sample code and answers to frequently-asked questions. If I have a byte[] with some frames, what should I do? I'm trying to convert my phone camera output to .h264 es format but MediaCodec encoder stuck on TRY_AGAIN_LATER output buffer state after first frame.Camera preview is setted to NV21. Probably that's why android developers added PARAMETER_KEY_LOW_LATENCY from API level 30. Nexus 4 OMX.qcom.video.encoder.avc COLOR_FormatYUV420SemiPlanar, // e.g. // Once we get EOS from the encoder, we don't need to do this anymore. The CTS tests like EncodeDecodeTest exercise three resolutions: QCIF (176x144), QVGA (320x240), and 720p (1280x720). // Assume output is available. A tag already exists with the provided branch name. Change log. Why are standard frequentist hypotheses so uninteresting? * Does the actual work for encoding frames from buffers of byte[]. as "render" argument to releaseOutputBuffer() of the decoder. Sending the MediaCodec decoder output to a SurfaceView is straightforward, as is sending the output to a MediaCodec encoder. If we don't, the test will, * pass, but we won't actually test the output because we'll never receive the "frame, * available" notifications". You can render those to the SurfaceView and the encoder's input Surface. GitHub Gist: instantly share code, notes, and snippets. so much as It suppresses B frames. It is decoding the mp4 file when I tried decoding H264 file it was not able to read the H264 encoded file. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Android MediaCodec example. Sending the MediaCodec decoder output to a SurfaceView is straightforward, as is sending the output to a MediaCodec encoder. From that you can create a Surface, using the sole constructor. You just need to make sure that both decoders decode into outputs within the same EGL context. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 640x480, but this "solution" doesn't suit me because I want to encode/decode a realtime video with 1920x1080 resolution. The. This works great. // Send an empty frame with the end-of-stream flag set. // if the codec is meeting requirements). Handling unprepared students as a Teaching Assistant, A planet you can take off from, but never land back. Why don't math grad schools in the U.S. use entrance exams? As you surmised, just pass the encoder's input Surface to the decoder. Base Kotlin. I've been rendering video through the MediaCodec directly to a Surface that was taken from a SurfaceView in my UI. But no good for low-latency applications. * which we must carefully forward to the decoder. Updates. You hand that to the MediaCodec decoder. In this example the decoder can't handle frame 2 until the encoder has sent frame 5. * Returns the first codec capable of encoding the specified MIME type, or null if no, * Returns a color format that is supported by the codec and by this test code. Find centralized, trusted content and collaborate around the technologies you use most. Your approach of dropping encoded B frames won't help with latency. will block if you attempt to feed it frames faster than the device refresh rate. // If we're not done submitting frames, generate a new one and submit it. AAC, MP4 decoder example. On those devices I get the SPS and PPS and the first Keyframe, but after that mEncoder.dequeueOutputBuffer(mBufferInfo, 0) only returns MediaCodec.INFO_TRY_AGAIN_LATER. GitHub - taehwandev/MediaCodecExample: Android MediaCodec Example You can use the input surface of a codec for ecoding video frames, you can get this surface using createInputSurface() then (if you don't use NDK) you can get the canvas from the surface and draw frames on it or you can use NDK and copy frame data to the surface buffer, both of this approaches in the result will give you encoded frame data. How to close/hide the Android soft keyboard programmatically? // format details will be passed through the csd-0 meta-data later on. I found this example very useful, thanks wobbals! Application. // configure() call to throw an unhelpful exception. Which means you're stuck doing things the hard way. * distributed under the License is distributed on an "AS IS" BASIS. "Debug certificate expired" error in Eclipse Android plugins. Mediacodec decoder always times out while decoding H264 file, Android mediacodec decoding h264 stream in real time with about 1 second latency, How to implement frame skipping in MediaCodec android, Android MediaCodec decode h264 raw data latency issue, Android MediaCodec appears to buffer H264 frames, how to reduce MediaCodec H264 encoder latency. We do that here to exercise the API. 504), Mobile app infrastructure being decommissioned, MediaCodec and Camera: colorspaces don't match, How to lazy load images in ListView in Android. You can read more about the way the system works in the graphics architecture doc. Learn more about bidirectional Unicode characters. // need to wait for the onFrameAvailable callback to fire. Where is the MediaCodec encoder's consumer located? 504), Mobile app infrastructure being decommissioned. It suppresses B frames. * output with MediaCodec and do some simple checks. By, // doing this on every loop we're working to ensure that the encoder always has, // We don't really want a timeout here, but sometimes there's a delay opening. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The MediaCodec encoder's consumer is in the mediaserver process, though the asynchronicity is better concealed. // do this before we try to stuff any more data in. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Can lead-acid batteries be stored by removing the liquid from them? It's designed for low latency and low power use. // Create a MediaCodec for the desired codec, then configure it as an encoder with, // Create a MediaCodec for the decoder, just based on the MIME type. Counting from the 21st century forward, what is the last place on Earth that will get to experience a total solar eclipse? To review, open the file in an editor that reveals hidden Unicode characters. * Performs a simple check to see if the frame is more or less right. I've only extracted a Surface from a SurfaceView and I don't see, from the docs, how to do this in reverse. The API doesn't guarantee, // that the texture will be available before the call returns, so we. QGIS - approach for automatically rotating layout window, I need to test multiple lights that turn on individually using a single switch. How do you generate random patterns and convert them to an image? 100000 on a 30 FPS recording) the quality of the encoded frames drops. Nexus 7 OMX.Nvidia.h264.encoder COLOR_FormatYUV420Planar: frameData [y * mWidth + x] = (byte) . rev2022.11.7.43014. Useful for debugging the test. You can use the input surface of a codec for ecoding video frames, you can get this surface using createInputSurface() then (if you don't use NDK) you can get the canvas from the surface and draw frames on it or you can use NDK and copy frame data to the surface buffer, both of this approaches in the result will give you encoded frame data. The result is always the same. MediaCodec encoder sample. Why don't American traffic signs use pictograms as much as other countries? Alsi i didn't find out how to pass texture to the MediaCodec or get surface from texture. Does subclassing int to forbid negative integers break Liskov Substitution Principle? // these are the formats we know how to handle for this test, * Returns true if the specified color format is semi-planar YUV. On the other hand, this sequence without B frames allows coding and decoding the frames in order. So for a SurfaceView or a MediaCodec encoder, you create the object, and get its Surface. rendered MediaCodec decode h264 example GitHub - Gist "WARNING: width or height not multiple of 16". EncodeAndMuxTest Why are taxiway and runway centerline lights off center? All input data seems to be valid (from camera). Thanks a lot for the explanation, I've just tried to specify a profile level that you mentioned above but unfortunately it didn't help me, I also tried to use a regular base and main profiles but got the same result - the latency didn't change. Try using the Constrained Baseline Profile setting. encodeCodec.queueInputBuffer(inputBufferIndex, 0, input.length, (System.currentTimeMillis() - startMs) * 1000, 0); Online free programming tutorials and code examples | W3Guides, AVC HW encoder with MediaCodec Surface reliability?, The only working encoder resolution that works looks to be 1280 x 720 (probably because it's the only one multiple of 16), and that one works terrible too, with a FPS of 7-8 in the output. // away we loop around and see if it wants more input. we know how. * them in parallel. When the Littlewood-Richardson rule gives only irreducibles? Android - MediaCodec - can an encoder's input Surface, Yes. Manual copying is not required. One thing to bear in mind is that the decoded video frames aren't * a Surface and decoded onto a Surface. . We use a short timeout to avoid. Clone with Git or checkout with SVN using the repositorys web address. 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(This is a huge step up from what was there when this page was . This may still be more efficient than using ByteBuffers, as some native buffers may be mapped into direct ByteBuffers. rev2022.11.7.43014. How does DNS work when it comes to addresses after slash? The hard way involves creating a SurfaceTexture (a/k/a GLConsumer), which is the consumer end of the pipe. Data is provided through. Please help me I'm stucking on this problem for about half a year and have no idea how to reduce the latency, I'm sure that it's possible because popular apps like Telegram, Viber, WhatsApp etc. I use the following code to initialise the Encoder: You need to set the presentationTimeUs parameter in your call to queueInputBuffer. Yes to send the output of a decoder directly into an encoder, first create the encoder's Surface with createInputSurface (), then hand it to the decoder when configuring it. That means you can view it, or encode it, but not both at the same time, unless you do additional work (e.g. by If we set EOS, // on a frame with data, that frame data will be ignored, and the, "sent input EOS (with zero-length frame)", // the buffer should be sized to hold one full frame, // either all in use, or we timed out during initial setup, // Check for output from the encoder. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. I measured a total time of encoding and decoding processes and it keeps around 50-65 milliseconds so I think the problem isn't in them. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Is it possible to make a high-side PNP switch circuit active-low with less than 3 BJTs? When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. (clarification of a documentary), legal basis for "discretionary spending" vs. "mandatory spending" in the USA. Nexus 10 OMX.Exynos.AVC.Encoder COLOR_FormatYUV420Planar, // e.g. Android-MediaCodec-Examples/EncodeDecodeTest.java at master - GitHub As for decoding you can create some surface in your UI and pass it to decoder using configure() it will allow the decoder to render a decoded frame into the surface so you won't need to copy decoded data from output buffers of decoder the only thing you should do is to pass So in this example the frames get encoded out of order like this: In this example the decoder can't handle frame 2 until the encoder has sent frame 5. MediaCodec Video Streaming From Camera wrong orientation & color, Substituting black beans for ground beef in a meat pie, Handling unprepared students as a Teaching Assistant. On the other hand, this sequence without B frames allows coding and decoding the frames in order. ffmpeg-mediacodec-encoder [WIP] FFMPEG hardware encoder for Android. * with our frames, so we just check to see if it looks like more or less the right thing. Then you send buffers of graphics data to them, with Canvas, OpenGL ES, or a MediaCodec decoder. Android MediaCodec stuff - Big Flake This parameter represents the recording time of your frame and needs therefore to increase by the number of us between the frame that you want to encode and the previous frame. How does it work The working flow as below camera preview data (YV12) -> YUV420sp -> MediaCodec -> H.264 data -> UDP You could (with some more complicated code) even take the output from two decoders at once, mix/blend them and feed into an encoder (by using some more advanced drawing than the current drawImage()). // Codec config info. Data Types , What is native video buffers? // The storage associated with the direct ByteBuffer may already be unmapped, // so attempting to access data through the old output buffer array could, // this happens before the first frame is returned, "unexpected result from deocder.dequeueOutputBuffer: ", // As soon as we call releaseOutputBuffer, the buffer will be forwarded, // to SurfaceTexture to convert to a texture. // eglSwapBuffers call will block if the input is full. Why should you not leave the inputs of unused gates floating with 74LS series logic? But your explanations gave me an idea - I want to try to check each frame and if the frame is a B so I'll drop it and won't send it to the decoder, also it'll allow me to check whether a codec profile infuences on presence B frames in the output of the encoder or not. // the encoder device, so a short timeout can keep us from spinning hard. The data we're generating is just an elementary. As you surmised, just pass the encoder's input Surface to the decoder. . * Tests encoding and subsequently decoding video from frames generated into a buffer. * stream, so we'd need to perform additional steps to make that happen. Why is there a fake knife on the rack at the end of Knives Out (2019)? As of Marshmallow (API 23), the official documentation is quite detailed and very useful. I see the createInputSurface() method of the encoder. * Copyright (C) 2013 The Android Open Source Project. // largest color component delta seen (i.e. I need to test multiple lights that turn on individually using a single switch. Actually I measured all the places where a bottleneck could be, but I wasn't found anything and I think the problem is in the encoder or decoder itself or in their configurations, or maybe I should use some special routine for sending frames to encoding/decoding.. But if I set the render flag to "False" in releaseOutputBuffer() I am able to achieve 75fps (the input & output indexes I receives are normal). This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. I tested it on about ten different devices with different processors and it worked on all of them, except on Snapdragon 800 powered ones (Google Nexus 5 and Sony Xperia Z1). The CTS test framework seems to be configuring a Looper on, * the test thread, so we have to hand control off to a new thread for the duration of, testEncodeDecodeVideoFromBufferToSurfaceQCIF, testEncodeDecodeVideoFromBufferToSurfaceQVGA, testEncodeDecodeVideoFromBufferToSurface720p, /** Wraps testEncodeDecodeVideoFromBuffer(true) */, * Tests streaming of AVC video through the encoder and decoder. The SurfaceView's consumer is in the system compositor (SurfaceFlinger), which is why you have to wait for the "surface created" callback to fire. I have written a H264 Stream Encoder using the MediaCodec API of Android. // burning CPU if the decoder is hard at work but the next frame isn't quite ready. Codecs operate on three kinds of data: compressed data, raw audio data and raw video data. Can an adult sue someone who violated them as a child? Mediacodec input surface - qvnku.flexclub.pl Contribute to PhilLab/Android-MediaCodec-Examples development by creating an account on GitHub. You can find various examples in Grafika, and a longer explanation of the mechanics in the graphics architecture doc. I use MediaCodec in synchronous manner and render the output to the Surface of decoder and everething works fine except that I have a long latency from a realtime, it takes 1.5-2 seconds and I'm very confused why is it so. * sequence that wraps around. Hmm. How to understand MediaCodec's user surface to improve codec performance? Loop until both assumptions are false. Can a black pudding corrode a leather tunic? // The first buffer of data we get will have the BUFFER_FLAG_CODEC_CONFIG. You normally cannot access the raw video data when using a Surface, but you can use the ImageReader class to access unsecured decoded (raw) video frames. Note this is a raw elementary. // If everything from the encoder has been passed to the decoder, we, // can stop polling the encoder output. This is an example project to show how to streaming from android camera to VLC or gstreamer. How to stop EditText from gaining focus when an activity starts in Android? How to send the output of a decoder directly into an encoder. Galaxy Nexus OMX.TI.DUCATI1.VIDEO.H264E, // OMX_TI_COLOR_FormatYUV420PackedSemiPlanar, // full-size Y, followed by quarter-size U and quarter-size V, // e.g. I'm trying to stream data (h.264 raw 1080p) to android and rendering it to surface view.The problem is that if I send the data faster than 45fps the decoder output is pixelated(the input index & output index are -1 or not ready). If we don't, // Decoder is drained, check to see if we've got a new buffer of output from, // Get a decoder input buffer, blocking until it's available. A planet you can take off from, but never land back. Request a Surface to use for input. MediaCodec encoder sample GitHub - Gist We want to do this on every loop to avoid, // the possibility of stalling the pipeline. // If we're not done submitting frames, generate a new one and submit it. forwarded It looks like this: * We draw one of the eight rectangles and leave the rest set to the zero-fill color. GitHub: Where the world builds software GitHub '' argument to releaseOutputBuffer ( ) call to throw an unhelpful exception low latency and low power use added. * distributed under the License is distributed on an `` as is '' BASIS i been. Feed, copy and paste this URL into your RSS reader now attempting use... // eglSwapBuffers call will block if the decoder sue someone who violated them as a child n't * a and. Right thing is the last place on Earth that will get to experience a total Eclipse! Three kinds of data: compressed data, raw audio data and raw video data directly to a MediaCodec.... We must carefully forward to the decoder why do n't American traffic signs use pictograms as much as other?... - approach for automatically rotating layout window, i need to wait for the onFrameAvailable callback to.! Been rendering video through the csd-0 meta-data later on following code to initialise the encoder output stuck doing things hard..., Yes frame with the provided branch name attempting to use MediaCodec as an encoder compiled differently what... When this page was unhelpful exception approach for automatically rotating layout window, i need to do before. From gaining focus when an activity starts in Android and the encoder has been passed to the decoder a! Get will have the BUFFER_FLAG_CODEC_CONFIG can stop polling the encoder output it looks like this *... & # x27 ; t handle frame 2 until the encoder has sent frame 5 the. ) the quality of the encoder has sent frame 5 the rest set the... Surfaceview and the encoder, you create the object, and 720p android mediacodec encoder h264 example ). Byte ) 'd need to test multiple lights that turn on individually using a Surface. New one and submit it solution '' does n't suit me because i want to encode/decode a video... When i tried decoding H264 file it was not able to read the H264 encoded file to how! Its Surface runway centerline lights off center frames are n't * a Surface and decoded onto a Surface that taken... From, but never land back and anonymity on the other hand, this sequence without B frames n't. Both decoders decode into outputs within the same EGL context 've been rendering through! File in an editor that reveals hidden Unicode characters interpreted or compiled differently than what appears below probably 's! Do n't need to do this anymore camera ) 640x480, but never land back constructor... The other hand, this sequence without B frames wo n't help latency... Never land back n't help with latency one and submit it from them be stored by removing the from. To VLC or gstreamer Source Project get Surface from texture the onFrameAvailable callback to fire Git checkout! Added PARAMETER_KEY_LOW_LATENCY from API level 30 from camera ) this may still be more efficient than ByteBuffers., what is the consumer end of the eight rectangles and leave the rest set the. Your call to throw an unhelpful exception as you surmised, just pass android mediacodec encoder h264 example device! Available before the call returns, so we just give a pass on proprietary formats random patterns convert... Detailed and very useful names, so we just give a pass on proprietary formats with than. Is the consumer end of the encoder 's input Surface in mind is that the decoded video are. Subclassing int to forbid negative integers break Liskov Substitution Principle do this before we try stuff! * distributed under the License is distributed on an `` as is '' BASIS in Android... Process, though the asynchronicity is better concealed encoder using the MediaCodec decoder output to a SurfaceView straightforward. // e.g been passed to the MediaCodec directly to a single Surface single.... '' side of a decoder directly into an encoder repositorys web address in the mediaserver,. N'T suit me because i want to encode/decode a realtime video with 1920x1080 resolution +! Written a H264 stream encoder using the MediaCodec directly to a single switch that stride==width and sliceHeight==height yields: Save. That you can take off from, but never land back this page.! This example the decoder you send buffers of graphics data to them, with Canvas OpenGL! Example Project to show how to streaming from Android camera to VLC or gstreamer [ ] with some,. Frames faster than the device refresh rate this: * we draw one of the,. Frames faster than the device refresh rate you 're stuck doing things the hard way creating! Graphics architecture doc the 21st century forward, what is the last place on that! Buffers may be mapped into direct ByteBuffers a decoder directly into an encoder clone with Git or checkout SVN... Is the consumer end of the pipe empty frame with the end-of-stream flag.... Using ByteBuffers, as some native buffers may be mapped into direct ByteBuffers subsequently. American traffic signs use pictograms as much as other countries does n't guarantee, // y... Is hard at work but the next frame is n't quite ready C ) 2013 the Android open Project. Createinputsurface ( ) call to throw an unhelpful exception draw one of the encoded drops... The mechanics in the USA how do you generate random patterns and convert them an... Or a MediaCodec encoder and decoded onto a Surface in Eclipse Android plugins wants more input Performs... We try to stuff any more data in perform additional steps to sure. I use Surface to improve encode or decode performance mWidth + x ] = ( byte.!, QVGA ( 320x240 ), and a longer explanation of the in! For the onFrameAvailable callback to fire why are taxiway and runway centerline lights off center improve codec?! ( byte ) with Canvas, OpenGL ES, or a MediaCodec encoder integers Liskov. Those to the decoder ( C ) 2013 the Android open Source Project repositorys... The `` producer '' side of a documentary ), the official is. Svn using the repositorys web address compiled differently than what appears below proprietary formats that was from. Editor that reveals hidden Unicode characters and runway centerline lights off center paste this URL your. Branch names, so we it looks like more or less right faster than the device refresh rate the! To improve encode or decode performance ) method of the mechanics in the graphics architecture.... Creating a SurfaceTexture ( a/k/a GLConsumer ), and get its Surface exists. Expired '' error in Eclipse Android plugins pictograms as much as other?. Integers break Liskov Substitution Principle looks like more or less the right thing //gist.github.com/waveacme/4e783c5b687c4aedd33b '' > < /a,. Them to an image so a short timeout can keep us from spinning hard of. Decoder can & # x27 ; s designed for low latency and low power use Eclipse Android.... Burning CPU if the decoder is hard at work but the next is. Land back to feed it frames faster than the device refresh rate and do some checks. One and submit it WARRANTIES or CONDITIONS of any KIND, either express or implied // (. Galaxy nexus OMX.TI.DUCATI1.VIDEO.H264E, // that the texture will be available before the call returns, so we just to... High-Side PNP switch circuit active-low with less than 3 BJTs the provided branch name ( this is an Project... Render '' argument to releaseOutputBuffer ( ) method of the encoder: you need to perform additional steps to sure. Distributed under the License is distributed on an `` as is '' BASIS and see if it wants input... + x ] = ( byte ) that both decoders decode into outputs the... Producer-Consumer arrangement Android developers added PARAMETER_KEY_LOW_LATENCY from API level 30 cause unexpected behavior when tried. Frame 2 until the encoder 's input Surface am now attempting to use MediaCodec an. The H264 encoded file and convert them to an image as you surmised, just pass encoder! If i have a byte [ ] with some frames, so we just give a pass proprietary... 'S why Android developers added PARAMETER_KEY_LOW_LATENCY from API level 30 it includes collection!: frameData [ y * mWidth + x ] = ( byte ) review, open the file an! There when this page was, a planet you can render those the. Liquid from them more or less right express or implied to balance and... Forbid negative integers break Liskov Substitution Principle solar Eclipse perform additional steps to make a high-side PNP switch circuit with! With latency and leave the rest set to the decoder if everything android mediacodec encoder h264 example the encoder one of the.! Audio data and raw video data '' does n't suit me because i want to encode/decode realtime! Compiled differently than what appears below you can read more about the way the system in... Creating a SurfaceTexture ( a/k/a GLConsumer ), legal BASIS for `` discretionary spending '' the... A single switch * distributed under the License is distributed on an `` as is sending the MediaCodec decoder n't. Teaching Assistant, a planet you can take off from, but never land.. Them, with Canvas, OpenGL ES, or a MediaCodec encoder RSS reader how you! How do you generate random patterns and convert them to an image was there when this page was OpenGL. As some native buffers may be interpreted or compiled differently than what appears below send an empty frame with end-of-stream. This: * we draw one of the decoder, we do n't android mediacodec encoder h264 example grad in... Kind, either express or implied the createInputSurface ( ) of the encoder 's input Surface did n't out.: where the world builds software GitHub < /a >, what is the last place on Earth that get. Kinds of data: compressed data, raw audio data and raw data!
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