You can also use mp4v fourcc = cv2.VideoWriter_fourcc(*’mp4v’) where the videowriter should look like this: out = cv2.VideoWriter(‘output.mp4’,fourcc, 15, size) But there are more codecs available for mp4. You can see the list of them by setting fourcc = -1, it will show a list like this: OpenCV: FFMPEG: format mp4 / MP4 (MPEG-4 Part … Read more
Since Python 2.6, a good practice is to use io.open(), which also takes an encoding argument, like the now obsolete codecs.open(). In Python 3, io.open is an alias for the open() built-in. So io.open() works in Python 2.6 and all later versions, including Python 3.4. See docs: http://docs.python.org/3.4/library/io.html Now, for the original question: when reading … Read more
As far as I know, OpenCV VideoWriter has no support for HEVC encoding (yet). I recommend you using FFmpeg as sub-process, and PIPE the rendered frames to stdin input stream of ffmpeg. You may use Python binding for ffmpeg like ffmpeg-python, or execute ffmpeg using Python subprocess. Using ffmpeg, you have much more control over … Read more
Believe me, I feel and know your frustration. I have pondered this for a while, but I had to use un-straight means of solving my issues. There are many ways around this, each with limitations but depends on what works for you: Docs say WebView works with HTML5, which plays videos supported on the platform … Read more
There is currently no Web API targeted to video editing. The MediaStream and MediaRecorder APIs are meant to deal with live sources. Because of the structure of video files, you can’t just slice a part of it to make a new video, nor can you just concatenate small video files to make one longer. In … Read more
Modern containers govern the time component of presentation of video (and audio) frames using timestamps, rather than framerate. So, instead of recording a video as 25 fps, and thus implying that each frame should be drawn 0.04 seconds apart, they store a timestamp for each frame e.g. Frame pts_time 0 0.00 1 0.04 2 0.08 … Read more