codec not currently supported in container ffmpeg does not support PCM (pcm_alaw, pcm_s16le, etc) in the MP4 container. Encode the audio as AAC, or use a different output container format such as MOV or MKV. Encode the audio to AAC ffmpeg -i input.mov -c:v copy -c:a aac output.mp4 Or output to MOV or MKV ffmpeg … Read more
Just to update this answer, I would not recommend using Miro Video Converter any more. It used to be my weapon of choice for creating HTML5 video for web, but the current version 3 of the program has issues with converting into ogg theora: the quality of the converted video is far too low and … Read more
This answer was posted (under the CC BY-SA 4.0 license) as a comment by Gyan to the question Convert videos from .264 to .265 (HEVC) with ffmpeg. Run this command for x265 conversion: ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 output.mp4
Homebrew v2.0 dropped all of the extra options that are not explicitly enabled in each formulae. So the –with options no longer work if you use the core Homebrew formulae. Instead you can use a third-party repository (or “tap”) such as homebrew-ffmpeg. This tap was created in response to the removal of the options from … Read more
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
Master copy Lossless – HUFFYUV in AVI is a good option. Lossy – MJPEG (series of JPEG) in AVI is a good option, where each frame will be independently encoded. The editing will be faster. Distribution Video codec – Use either H.264 video (not free) or VP8 (free video codec by Google). You should use … Read more
Yes ffmpeg certainly does support alpha channel in a video file. Not all codecs in ffmpeg seem to support alpha yet tho. Motion PNG in a .MOV file is one good combination for alpha. To encode/import images with alpha to a video with alpha try: ffmpeg -i %d.png -vcodec png z.mov Quicktime will play that. … Read more
Get rid of the leading / in your path to the png. It should be images/p8.png. Also, consider using the cleaner Image.asset constructor, for example: new Image.asset(‘images/p8.png’, width: 100.0, height: 100.0)
For ffmpeg: ffmpeg -i {input}.mov -vcodec h264 -acodec aac -strict -2 {output}.mp4 You may also add the -q:v/-q:a parameter to specify the quality of the video. You may also use HandBrake which is a simpler encoder than ffmpeg. For HandBrake: handbrakecli -i {input}.mov -e x264 -E facc -o {output}.mp4 EDIT: I found the solution! … 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