So - I think this is a browser bug. It came up in a much more complicated design/site, but I've had a good solid fiddle around, simplified my code and designs, etc, and have found the following: W...

I have a Material UI Card component that I'd like to have contain a video (webm) that autoplays. (It's a mute video) The documentation for the CardMedia component indicates to list any HTML element...

Using patent-free audio and video codecs on the web has always been problematic due to poor support in Safari. According to the Safari 15 release notes, though, this might be starting to change. We...

I have created player in iOS. It works well for URLs such as mp4 and m3u8. But I have one webm extension URL. AVPlayer is not working for this. Sample url: http://images.all-free-download.com/f...

I am trying to convert a .mov file with alpha transparency into a .webm file and have been following this thread for help: Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg The command li...

I am trying to convert a mov with alpha transparency to webm with alpha transparency, as seen here. I followed the steps explained here to no avail. From this answer I was able to remove all the b...

I want to give support of webm file in iOS , but iOS doesn't support this format to play a video. i Even tried to play it through HTML5 video tag but safari doesn't support webm format in HTML5 vid...

Every tutorial/explanation I see out there that discusses HTML5 video format fallbacks use this type of markup as an example: <video autoplay> <source src="/myvideo.mp4" type="video/mp4...

I'm following the documentation on how to concatenate files with ffmpeg but during the process I'm seeing lots of warning and the output video stops after the first chunk but the audio keeps on pla...

I'm using youtube-dl to extract the best possible audio quality from youtube videos. However the best quality audio usually turns out to be the webm format, which isn't useful. I would like to writ...

I have a problem. I would to do a live streaming with ffmpeg from my webcam. I launch the ffserver and it works. From another terminal I launch ffmpeg to stream with this command and it works: su...

I've done an hour of googling but I either suck at it, or it isn't a common issue. Here's my video tag: <video class="video-background" preload="none" loop="loop" autoplay="autoplay"> <...

When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg I used the following commands to convert ffmpeg -i movie.webm ...

With FFmpeg how can I use AV1 codec in a webm container? I get the error: Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM. Could not write header for ou...

I'm developing an app in Android Studio, and it's useful to be able to record video from the emulator (via the button in the Logcat tab). However, in recent versions of Studio (I'm now on 3.4.1) th...

I have ubuntu 16.04 LTS and OpenCV 3.4.0 Installed(Intel i5 and AMD graphics card), I need to create a browser supported video, which is playable in browser. If I'm using H264 im getting OpenCV: ...

I've got a webm file with transparency : https://itype.techforge.com.au/assets/videos/upshot/module1/NP_1A.webm I'm trying to convert it into something that will play in the video element of a web ...

Is there any way to have Android play video with transparent areas? When I try to play a WebM video containing transparent areas in VideoView, the background of the view remains black. Instead of b...

I am recording screen capture of my Electron app to a file, as suggested here: Save captured video to file in Electron It works great, but the file is a “transport stream”. I can play it in Chrome ...

I've been messing with webm file headers (messing with the header data for file length etc.) and in the process I stumbled upon a webm that behaves weirdly. I reuploaded it here on webmshare. It co...

I just want to get a audio file(opus codec used) only in webm file. I try to search what is webm format, how to parse, but I cant get info well. I check that webm format is from mkv, then should I ...

I've created a WebM media file with transparent background in Adobe After Effects. Due to Widevine specs, I have to encode this file to an adaptive format for playing. With the following command I'...

I need to split a webm encoded video into png frames, without losing transparency. I use the following ffmpeg command: ffmpeg -i dancer1.webm -pix_fmt rgba frames/%04d.png This produces a direct...

In Chrome. I'm using MediaRecorder and canvas.captureStream() to create a webm file of the canvas. let recorder = new MediaRecorder(document.querySelector('canvas').captureStream(), {mimeType: 'vi...

For recording audio and video, I am creating webm files under the ondataavailable of MediaRecorder API. I have to play each created webm file individually. Mediarecorder api inserts header inform...