How to use ffmpeg command?
The typical syntax of the FFmpeg command is: ffmpeg [global_options] { [input_file_options] -i input_url} { [output_file_options] output_url} We are now going to see some important and useful FFmpeg commands. 1. Getting audio/video file information To display the details of a media file, run:
How do I change the bitrate and frame rate in FFmpeg?
To set the video bitrate of the output file to 64 kbit/s: ffmpeg -i input.avi -b:v 64k -bufsize 64k output.avi To force the frame rate of the output file to 24 fps: ffmpeg -i input.avi -r 24 output.avi
How to create a picture thumbnail using FFmpeg?
This picture thumbnail can be created with FFmpeg. We will use -r option to specify rate and -f option for the format. In the example, we will create a thumbnail with rate 1.
What is the range of decoding frame failure threshold in FFmpeg?
No packets were passed to the muxer in some of the output streams. Set fraction of decoding frame failures across all inputs which when crossed ffmpeg will return exit code 69. Crossing this threshold does not terminate processing. Range is a floating-point number between 0 to 1. Default is 2/3.
How to join multiple audio/video parts into one FFmpeg file?
Joining or merging multiple audio/video parts into one FFmpeg will also join the multiple video parts and create a single video file. Create join.txt file that contains the exact paths of the files that you want to join. All files should be same format (same codec).
How to add subtitles to a video using FFmpeg?
We can also add subtitles to a video file using FFmpeg. Download the correct subtitle for your video and add it your video as shown below. 19. Preview or test video or audio files You might want to preview to verify or test whether the output file has been properly transcoded or not. To do so, you can play it from your Terminal with command:
How do I change the volume of an audio file in FFmpeg?
Change the volume of audio files FFmpeg allows us to change the volume of an audio file using “volume filter” option. For example, the following command will decrease volume by half. $ ffmpeg -i input.mp3 -af ‘volume=0.5’ output.mp3