ffmpeg overwrite output file if exists
Use the -y option to automatically overwrite [docs]:
ffmpeg
FFMPEG- Convert video to images
You can use the select filter for a set of custom ranges:
FFMPEG- Convert video to images
You can use the select filter for a set of custom ranges:
use java-ffmpeg wrapper, or simply use java runtime to execute ffmpeg?
If I’m not mistaken, the “ffmpeg wrapper” project you linked to is out of date and not maintained. ffmpeg is a very active project, lot’s of changes and releases all the time. You should look at the Xuggler project, this provides a Java API for what you want to do, and they have tight integration … Read more
Can ffmpeg show a progress bar?
I’ve been playing around with this for a few days. That “ffmpegprogress” thing helped, but it was very hard to get to work with my set up, and hard to read the code. In order to show the progress of ffmpeg you need to do the following: run the ffmpeg command from php without it … Read more
Cutting the videos based on start and end time using ffmpeg
You probably do not have a keyframe at the 3 second mark. Because non-keyframes encode differences from other frames, they require all of the data starting with the previous keyframe. With the mp4 container it is possible to cut at a non-keyframe without re-encoding using an edit list. In other words, if the closest keyframe … Read more
How to create a video from images with FFmpeg?
See the Create a video slideshow from images – FFmpeg If your video does not show the frames correctly If you encounter problems, such as the first image is skipped or only shows for one frame, then use the fps video filter instead of -r for the output framerate Alternatively the format video filter can be added to the filter chain … Read more
How can I extract audio from video with ffmpeg?
To extract the audio stream without re-encoding: -vn is no video. -acodec copy says use the same audio stream that’s already in there. Read the output to see what codec it is, to set the right filename extension.
What is the difference between M4A and AAC Audio Files?
Is there any difference between M4A audio files and AAC audio files or are they exactly the same thing but with a different file extension?