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Questions tagged [vp8]

VP8 is a video compression format owned by Google, encoded with the libvpx software library, and released under a 3-clause BSD license.

133 questions
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libvpx: Compiling simple encoder example

I am trying to compile Googles libvpx encoder example which can be found here: http://www.webmproject.org/docs/vp8-sdk/example__simple__encoder.html Unfortunately libvpx seems to miss dependencies: /usr/local/lib/libvpx.a(rdopt.c.o): In function…
Arizel
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How to encode RGB images (bitmaps) into VP8 format?

Anyone know how I could encode RGB images (24bppRgb) into VP8 format using C#? Basically I'm capturing the screen as bitmap frames and I want to encode them to reduce the size before sending. From what I've seen there are only code examples for…
Joey Morani
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Best HTML5 Video Format for Safari on Window (or getting VP8 to play in Safari on Windows)

Here's the deal, through a huge series of events, I am stuck using Safari on Windows for video playback in HTML5. I can't use any other browser, Chrome is out of the question, I must use Safari and it has to be on Windows for hardware…
Shawn Khameneh
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How to read and write VP8L and ALPH chunks of Webp images

I am trying these classes written in pure java code which used for encode the animated WEBP from list of static images. It is based on Google's Webp container specification. I tried to modify the codes to fix some errors. Now Problem: If image…
CrackerKSR
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How to read alpha A.L.P.H. chunks for webp having transparency?

Encoding webp image with transparency cause the no vp8 error. I came to know that if there is no transparent area then there is no error at all and Also the author of the encoder have added the Alpha channle as TODO. But using the encoder in its…
UHS
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Encode VP8 frames in Swift

How I can encode CMSampleBuffer I get from the camera from my iPhone to VP8 frames to send them to a UDP port in WebSocket? There is no library in Swift or Objective-C.
Juan Gil
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Is there any way (even if a hack-ish one, and working only on 1-2 main browsers) to impact keyframe interval for MediaRecorder()?

I am building the app along the lines of this: MediaSource randomly stops video and it works fine, except if the client connects to the stream while it was already running, it tooks a lot of time where the user watches a crippled image, until the…
Alexander Novikov
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Transcoding to webm with ffmpeg audio problems

For the past few days, I have been trying to get my lossless .mov video(that has an audio track) to a .webm format. Some info on the video & audio is that the fps is 30. Also the audio track has about 3-5 seconds of silence/blank audio before you…
Max A.
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see rtp vp8 stream in vlc

I have an rtp stream that I can capture and see with gstreamer: gst-launch-1.0 udpsrc caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)VP8, payload=(int)96" port=10035 ! rtpvp8depay ! decodebin !…
Alex Cohn
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How to call the functions in libvpx.so correctly?

I wanna decode the vp8 frame data received from UDP. So how can I call the functions in libvpx.so? I downloaded the libvpx v1.8.1. package and I compiled the libvpx to get libvpx.so. My computer is: Linux ubuntu 4.18.0-25-generic #26~18.04.1-Ubuntu…
Chaoqi Zhang
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MediaFoundation + VP8 + Color Formats

My ultimate goal is to add video support to my Virtual Class application. My method is: Capture frames using Media Foundation Encode with VP8 using LibVPX Transmit with UDP Decode at the receipient site Show frames in a Window The first problem…
Michael Chourdakis
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How to overlay video over webcam streaming using opencv or ffmpeg in Java

In my project I am previewing webcam capture and video (in webm format with vp8 codecs) capture on the screen in Java Desktop application. Currently I use VideoCapture class to retrieve both webcam and video frames perform some drawings on the…
Sanzhar
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ffmpeg avcodec_open2() return error -22 only in ubuntu

AS title, I'm working on a project on Mac with ffmpeg. It runs on my Mac to encode frames to vp9 & vp8. But when I run it on my docker image in a ubuntu, the function avcodec_open2(), returns -22 error. (only for vp9&vp8, h264 works). I wonder if…
User800222
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"trackPublished" event not firing in twilio-video Javascript SDk

I have the following code: $.getJSON('/video/getToken', function (data, status) { identity = data.identity; navigator.mediaDevices.getUserMedia({ audio: true, video: {width: 320, height: 240} }) .then(function…
lightbringer
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Is it worth it to transcode H.264 to VP8 when using WebRTC?

Hello I am currently building a live streaming solution that takes H.264 encoded video over RTSP, converts it to WebRTC, and then sends it to an HTML5 browser. H.264 is supported over WebRTC, and almost all browsers seem to support H.264 decoding,…
Jimmy James
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