At the class reference for MediaSource we can see that there are already some MediaSource s available. I though maybe SmoothStreaming MediaSource could work but there's no description of what it does exactly and in its constructor I have to provide an Uri or an SsManifest what.
I can see that there exists a NAL unit utility in this library so maybe things are already half done.Golang cli
Should I read this buffer in Java somehow? I've been researching how this library works. As I understood, DataSource is a class that gets the raw bytes from any possible place, be it a file read or a network packet. Based on the available Extractor classes on the library like Mp4Extractor and Mp3Extractoran Extractor is something that will interpret the data read from DataSource.
The two main methods from the Extractor interface are:. I don't know what are ExtractorInput and ExtractorInput for, but they look important. So somehow Extractor reads from DataSourceparses it and sends to Renderer in a common format? You cannot play NAL units or raw H. What's its role in Android decoding? It's not clear what your real problem is If you insist on Exoplayer, I can tell you that FLV is the one on containers list that might be the best option since it can be built in real-time re-muxing.
You'll have to get familiar with FLV bytes structure, but each frame header is around 13 bytes followed by NAL data, repeat for each frame until end.
This woud be realtime transcoding. Here is a useful example source. Just use as:. Study also functions of this other source for ideas of how it works to via Android's own decoder. Decode H raw stream using mediacodec.
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I have a project where I have been asked to display a video stream in android, the stream is raw H. Basically I'm wondering is there a way to send raw bytes to a decoder in android and display it on a surface? I understand that one way is to compile and use FFmpeg but I'd rather use a built in method that can use HW acceleration.
I also understand RTSP streaming is supported in android but this is not an option. Android version is not an issue. I can't provide any code for this unfortunately, but I'll do my best to explain it based on how I got it to work. So here is my overview of how I got raw H. Using the link above there is an example of getting the decoder setup and how to use it, you will need to set it up for decoding H AVC. The format of H. Basically I wrote a method that finds each individual unit and passes it to the decoder one NAL Unit being the starting prefix and any bytes there after up until the next starting prefix.
Now if you have the decoder setup for decoding H. You need to fill this InputBuffer with a NAL Unit and pass it back to the decoder and continue doing this for the length of the stream.
This unit has a byte value of 0x67 after the starting prefix the 4th byteon some devices the decoder would crash unless it received this Unit first.
Basically until you find this unit, ignore all other NAL Units and keep parsing the stream until you get this unit, then you can pass all other units to the decoder. Now if you had a surface that you passed to the decoder when you configured it then once it gets enough NAL units for a frame it should display it on the surface.
You can download the raw H. Note: raw H. Haven't found a Android lib that will do that yet. How are we doing?
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Decoding Raw H stream in android? Ask Question. Asked 7 years, 5 months ago.
Active 1 year, 1 month ago. Viewed 30k times. G 1 1 gold badge 6 6 silver badges 29 29 bronze badges.Web developers have been using Adobe Flash to play H. The challenges posed by H. Firefox currently supports H. We have temporarily blocked non-Samsung devices running Ice Cream Sandwich until we can fix or workaround some bugs.
Support for Gingerbread and Honeycomb devices is planned for a later release Bug To test whether Firefox supports H. If your device is not supported yet, you can manually enable H. If Firefox does not recognize your hardware decoder, it will use a safer but slower software decoder.
Daring users can manually enable hardware decoding. The default value is 0which will try the hardware decoder and fall back to the software decoder if there are problems Bug The most likely problems you will encounter are videos with green lines or crashes. If you find any video bugs, please file a bug report here so we can fix it!
Please include your device model, Android OS version, the URL of the video, and any about:config preferences you have changed. Log files collected from aLogcat or adb logcat are also very helpful. More articles by Chris Peterson…. Please check your inbox or your spam filter for an email from us. I just tested the video on Samsung galaxy tab II and it works flawlessly!
Firefox beta 18 on android ICS. Great news. I was disappointed in the poor support for webm in my testing. And it seemed. Would be great to get the desktops all in agreeance.
Why did Firefox devs stand the ground when the proposal of using 3rd party codecs to decode h. Or else Mozilla would be just a bunch of hypocrites. On my Galaxy S3 with Jelly Bean 4. Andrei, I filed a new bug report to track your issue. I was wondering if there were any plans to add H. John, Mozilla is investigating GStreamer as a possible option for playing H. So Mozilla caves in? What about principal stance on open codecs? On the desktop this argument is irrelevant, so why suddenly give up on it now?It was developed following the same concepts as H.
Major websites have already added support for HEVC videos.Free rigs maya
Some have even got one step further and already disabled AVC videos support. Videos in HEVC format are compressed. In order to be able to play these videos, they must first be decoded.
Decoding can be done by the CPU of the device known as software decoding or by using a special chip, designed to carry out this task quickly and efficiently known as hardware decoding.
Nearly all Android devices manufactured after feature some sort of a hardware AVC decoder, which allows them to play most videos encoded using AVC fluidly. However, things are different regarding the relatively new HEVC standard. Most devices produced before do not have an HEVC decoding chip.Glitter texture
Even newer devices can lack an HEVC hardware decoder, especially budget devices. If you find one of the above codecs in the list, your device supports hardware HEVC video decoding. Hardware decoding capabilities though vary between devices. For example, UHD video decoding is only available on latest generation devices.
However, this software decoder is not guaranteed by Google to be available on all devices running Android 5. You can easily check if your device has this decoder available using the Media Codec Info App mentioned above. Search for OMX. If you have this decoder available, you should be able to play HEVC videos through the stock video player App of your device. It is optimized for the Android platform and can be faster than FFMpeg based decoding in some scenarios. Try MOCR! If you need to rely on SW decoding implementation, you can tweak some settings to get better performance.
I acquire the frame data via Udp from a server. But, unfortunately, nothing is displayed at the moment. The Device I'm testing this code on is a Google Nexus 5. When I run this, the outIndex equals MediaCodec.
Edit: In case someone is encountering the same problem, the proposed amendment 1 of fadden solved the issue. I corrected the code above. Its working now. Another mistake of my shown example was, that you cannot pass null to.
HDR Video Playback
You have to do something like. MediaCodec doesn't work like this -- the framework provides the buffers, and you copy the data into them. The idea is that, by allowing the framework to do the allocation, it can potentially avoid copying the data later on. You need to get the array of input buffers from decoder. Make sure to clear the ByteBuffer to reset the position and limit each time. In practice, you may need to supply multiple buffers of data before the first frame is generated.
See this post for an example.
In some profiles the encoder is allowed to reorder frames, so even after the decoder starts going you can't just feed a frame and wait for decoded data to pop out the other side. Examples of both approaches can be found in EncodeDecodeTest.
There are a number of AVC decoding examples on bigflakebut the data source is the MediaCodec encoder, so they generally get point 3 for free.
H.264 video in Firefox for Android
This posting may be useful for you. For displaying the frames, you can see different approaches in Grafika which generally works with. How are we doing? Please help us improve Stack Overflow. Take our short survey. Learn more. Asked 6 years, 1 month ago. Active 6 years ago. Viewed 8k times. Here is what I have so far.JCodec is a library implementing a set of popular video and audio codecs. Currently JCodec supports:.
JCodec can be used in both standard Java and Android. It contains platform-agnostic java classes. To use the latest version of JCodec add the maven dependency as below:. For the latest and greatest the 0. There is virtually no documentation right now but the plan is to catch up on this so stay tuned. Also check the 'samples' subfolder. It's a maven project, and it contains some code samples for the popular use-cases:. Because JCodec is a pure Java implementation please adjust your performance expectations accordingly.
We usually make the best effort to write efficient code but despite this the decoding will typically be an order of magnitude slower than the native implementations such as FFMpeg. This is because very little work has been put so far into developing the encoder and also because encoders usually trade speed for quality, speed is something we don't have in Java, hence the quality.
Again we may potentially fix that in the future by introducing OpenCL RenderScript code but at this point it's an unknown. That said the decode quality should be at the industry level. This is because the decoding process is usually specified by the standard and the correct decoder implementations are expected to produce bit-exact outputs. Feel free to communicate any questions or concerns to us. Dev team email: jcodecproject gmail. Home Source code Downloads. About JCodec is a library implementing a set of popular video and audio codecs.Uninstall autodesk genuine service reddit
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I could decode and render the frames on the view.
My problem is the decoder miss lots of frames,especially the first some frames. I can not find where the problem is. Here is my codes. Getting -1 back from MediaCodec dequeueOutputBuffer is normal. It just means it doesn't have any output ready yet. It's not the case that you hand MediaCodec a buffer of encoded data and immediately get a decoded buffer back. You hand it a buffer of data, which gets sent to the mediaserver process, which feeds it into the hardware AVC decoder, which may still be initializing or maybe just likes to sit on a few frames.
When the decoding process completes, the decoded data gets passed back through mediaserver to your app process. The trick is, the queueInputBuffer call returns immediately. In normal operation the input side of the decoder will run several frames ahead of the output side. When you're done feeding input you set the end-of-stream flag, and when you see EOS set on the output you know you've reached the end. You can find various working examples on bigflake and in Grafika. Learn more. Android MediaCodec decode h raw frame Ask Question.
Asked 6 years, 2 months ago. Active 6 years, 2 months ago. Viewed 12k times. I hope your help.
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