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Questions tagged [webm]

WebM is an open video encoding standard by Google. It consists of video streams compressed with the VP8 or VP9 video codec, audio streams compressed with the Vorbis or Opus audio codecs, and WebVTT text tracks. It may contain alpha planes for transparency.

For the purposes of the video tag introduced by HTML5, there was a need for an open (royalty-free) video codec which could be incorporated into free open source projects. WebM is Google's answer to this challange. An other possibility is Theora (also royalty-free).

Other vendors are voting for H.264 (mostly Apple and Microsoft), for which they already bought the licenses to incorporate into their web browsers.

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how to demux from flv to vp8(ivf format)? how to demux from webm to vp8?

I want to demux from flv to vp8. I can get lots of webm sources, but I don't know how I can demux from webm to vp8. What option should I use with ffmpeg?
user3467614
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Internet explorer fails to play WEBM when encoded with FFMPEG

I am creating a video hosting site where users can upload videos which are then converted into a web viewable webm format via FFMPEG, but I seem to have a problem getting the HTML5-video to work on Internet Explorer (IE 11, Windows 8.1, webm…
Figroll
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Mux Audio and Video in C#

I'm looking for a way to join separate audio and video streams into a single container. Specifically I have VP8 video (webm container) and 16-bit PCM audio (wav container), which I'd like to combine into a Matroska container. So far I can achieve…
nestedforloop
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HTML5 video wont play

HTML5 video wont play videos and I cannot play them directly from the server but they play in firefox and opera locally. I cant figure out what Im missing. Took this tag straight from w3c
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FFmpeg library: modified muxing sample for FLTP input and FLTP audio, loses audio

Based on muxing sample that comes with FFmpeg docs, I have modified it, from input format as S16 to FLTP (planar stereo), and outputting to webm format (stereo). Since input is now FLTP, I am filling two arrays, then encoding again to FLTP. There…
taansari
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How to read data from a blob?

Is there a way to read data from a blob that is used by a
Andrey Mormysh
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FFmpeg library: webm (vorbis) audio to aac conversion

I have written a small program to convert webm (vorbis) audio to aac format, using FFmpeg libraries - C++ (on Windows using 32 bit Zeranoe FFmpeg builds). After writing this program, I find it is sometimes converting files as per expectation, and at…
taansari
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Setting the quality for ffmpeg command?

What do I have to add to this command: cat *.jpg | ffmpeg -f image2pipe -r 10 -vcodec mjpeg -i - out7.webm to get the best available quality?
Mebus
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How can I setup video streaming via http on windows?

I'm looking for a module to one of these web servers (apache, nginx, lighthttpd) to create video streaming in webm format. My operating system is Windows.
ManFromSiberia
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How to set bitrate of IVP8Encoder filter in a DirectShow application

How to set bitrate of vp8encoder filter in directshow application (c++ code). my graph looks like this. Webcam --->Webm VP8 encoder -->AVI mux --->file writer(.avi) I'm able to set bitrate in graphedit by right clicking vp8encoder->properties. But i…
user2164025
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mp4 and webm causes conflicts in web browsers when using videojs

I use the video player videojs below :
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No audio encoded with ffmpeg using webm/libvorbis

Having issues getting audio to encode to webm. Tried many different methods and it just ain't happenin. The commands are printed below before each pass. I have tried moving the audio commands around, trying different bitrates, different audio…
CRAIG
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Firefox html5 video rewinds instead of playing

I am using video tag on my website. It works with every major browser, but I am running into issues with Firefox. When I tap on the play button video scrolls to the end of video! In order to start the video I need to rewind video to position other…
Janusz Chudzynski
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Javascript adding 2 video sources

Hi I am very new to javascript. I have a .webm and .mp4 video source, but how can I add another source in javascript, I have only managed to put in 1 (webm), what is the code i need to add another one in? Thank You in advance. Hi, The reason why I…
AngelaK
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Is there a way for MP4 to work in all browsers with VideoJS?

On the backend of a site I am making for my client, I have an input for my client to put a Dropbox URL to an mp4 file to play on the frontend (he doesn't want to host the files on the server itself). But, with VideoJS, it looks like I may need a…
Nathan
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