encoder

问题 I am trying to use Nexus to test encoding with Mediacodec APIs. I can see the inputBuffers provided by the encoder is 119040 (by logging inputBuffers.capacity). But the size of the frame, i.e. input, is 460800. I got error message at inputBuffer.put with buffer overflow . So I was about to set the input buffer to 460800. The API I could find is BufferInfo.set . However, I cannot find a way to attach this setting to the encoder. Could someone help? Thanks!!! encoder = MediaCodec

问题 Which serialization is used for which case, From spark documentation it says : It provides two serialization libraries: 1. Java(default) and 2. Kryo Now where did Encoders come from and why is it not given in the doc. And also from databricks it says Encoders performs faster for Datasets,what about RDD, and how do all these maps together. In which case which serializer should we use? 回答1: Encoders are used in Dataset only. Kryo is used internally in spark. Kryo and Java serialization is

问题 Since MJPEG over http consists basically on the transmission of a series of JPEG images seperated by a defined seperator, how does MPlayer recognize that it is an MJPEG stream? Thank you 回答1: Have a look at: MplayerMjpegStreamViewing < Motion < Foswiki e.g. mplayer -fps 4 -demuxer lavf http://rpi-6:8080/?action=stream does the job for me. Suitable for a streaming server running on a Raspberry like this: /usr/local/bin/mjpg_streamer -o output_http.so -w ./www -i input_raspicam.so -x 1920 -y

问题 I want to concatinate 4 different videos of 4 different resolution and type into 1 video which can be played in android. I am using ffmpeg ported on android using https://github.com/guardianproject/android-ffmpeg So I have these 4 different types of videos 1) ./ffmpeg -i 1.mp4 Video: h264 (High), yuv420p, 1920x1080, 16959 kb/s, 29.85 fps, 90k tbr, 90k tbn, 180k tbc Audio: aac, 48000 Hz, stereo, s16, 106 kb/s 2) ffmpeg -i 2.mp4 Video: h264 (Constrained Baseline), yuv420p, 640x480, 3102 kb/s,

问题 I'm implementing an application with a WebSocket endpoint. Here is some code: @ApplicationScoped @ServerEndpoint(value="/socket", encoders = {MessageEncoder.class, CommandEncoder.class}) public class SocketEndpoint { /** Default-Logger */ private final static Logger LOG = LoggerFactory.getLogger(SocketEndpoint.class); @Inject SessionHandler sessionHandler; @OnOpen public void open(Session session, EndpointConfig config) { LOG.debug("Connected session => '{}' - '{}'", session, config);

问题 I take a picture from the camera preview and then save the obtained byte array into a jpeg file. Now I want to save/encode that image file(jpeg) as a video file (mp4) of 2 seconds duration. I know about MediaMuxer in Android 4.3 and I tried with the examples from https://android.googlesource.com/platform/cts/+/jb-mr2-release/tests/tests/media/src/android/media/cts/EncodeDecodeTest.java, but with no success i.e I get a blank video mp4 file. I transformed an image to mp4 video with ffmpeg

问题 Currently I'm trying to use Windows Media Foundation SDK (C++) to create WMV file on Windows 10. I was able to create a WMV file, but I have difficulty to add language list object (7C4346A9-EFE0-4BFC-B229-393EDE415C85) into the asf file. I am using WMSinkWriter to create a file, and how I pass input video/audio data is as following article mentions: https://docs.microsoft.com/en-us/windows/desktop/medfound/tutorial--using-the-sink-writer-to-encode-video Here's summary of what I'm doing: Call

来源： https://stackoverflow.com/questions/49236191/why-is-this-error-appearing

来源： https://stackoverflow.com/questions/49236191/why-is-this-error-appearing

来源： https://stackoverflow.com/questions/49236191/why-is-this-error-appearing