How do I force a 24fps on FFmpeg?
To force the frame rate of the output file to 24 fps: ffmpeg -i input.avi -r 24 output.avi. To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input.m2v -r 24 output.avi. The format option may be needed for raw input files.
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
What file formats can be used as input for FFmpeg?
Any supported file format and protocol can serve as input to ffmpeg: Examples: It will use the files: /tmp/test0.Y, /tmp/test0.U, /tmp/test0.V, /tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc… The Y files use twice the resolution of the U and V files. They are raw files, without header. They can be generated by all decent video decoders.
How do I improve the quality of a video using FFmpeg?
This command encodes a video with good quality, using slower preset to achieve better compression: ffmpeg -i input -c:v libx264 -preset slow -crf 22 -c:a copy output.mkv Note that in this example the audio stream of the input file is simply stream copied over to the output and not re-encoded.
Does FFmpeg include more than one stream?
Still, is this simply a consequence of this paragraph? STREAM SELECTION By default, ffmpeg includes only one stream of each type (video, audio, subtitle) present in the input files and adds them to each output file.
How does FFmpeg synchronize multiple input files?
When there are multiple input files, ffmpeg tries to keep them synchronized by tracking lowest timestamp on any active input stream. Encoded packets are then passed to the decoder (unless streamcopy is selected for the stream, see further for a description).