Commands tagged video

Convert those .mov files that your digital camera makes to .avi

Adjust the bitrate (-b) to get the appropriate file size. A larger bitrate produces a larger (higher quality) .avi file and smaller bitrate produces a smaller (lower quality) .avi file.

Requires ffmpeg (see man page for details)

(tested with canon camera MOV files)

Other examples:

Rip DVD to YouTube ready AVI file, using MPEG-4 video codec and MP3 audio codec. Resizes to 320x240 and deinterlaces as needed.

change the *.avi to whatever you want to match, you can remove it altogether if you want to check all files.

Create subtitle file heading.ssa with just one entry for the entire video duration. Command line sets that entry's text on top of the video as text watermark. If text is an URL works nice for sending people back to your site from a YouTube clip. Output file is lossless encoded and suitable for further processing. Subtitle file can be a URL so it's saved remotely.

Open a window that displays camera capture.

Framerate, width and height may be changed to match your needs.

Record audio to MP3 stream and video to MPEG-4 stream from webcam to AVI file using mencoder. Gives floating point exception in some mencoder versions.

View webcam output using mplayer, with correct fps and outfmt settings according to my webcam model.

Record from a webcam, audio using ALSA encoded as MP3, video as MPEG-4.

Extracts an MP3 encoded audio stream from an input video file.

Creates a new video file with video stream copied from input file and a different audio stream

Remove sound from input video file, output video stream is copied from input video stream, with no audio.

Gives MPEG-4/DivX output video file ready for uploading to YouTube from FLV file downloaded from the site and your own subtitle file UTF-8 encoded. No resizing needed. (?)

First, we convert the VMware avi (VMnc format) to the Microsoft avi format. Next, we convert the Microsoft avi format to FLV format.

You can play around with the -r switch (rate per second) and the -b switch (bitrate). But, if those get larger, so does your FLV file.

The option -an disables audio recording, -f forces the use of video4linux for the input, -s sets the video to the size 320x240, -b sets the recording bitrate, -r sets the frame rate to 15fps, -i gives the input device, -vcodec sets the output format.

Press Q to stop recording or you can specify the recording time with the -t option like -t 00:1:30

Encode video.avi into newvideo.avi using the libav codec to produce an MPEG4 file with a bitrate of 800

video.avi is the resulting file. Press Ctrl+c to stop the recording. You can change the OVC option to another to record into a different format.

Grab X11 input and create an MPEG at 25 fps with the resolution 800x600

rips the audio and video stream of a movie. The two streams are stored separately.

This assumes that there is a 10.2 sec delay between the video and the audio (delayed).

To extract the original video into a audio and video composites look at the command on extracting audio and video from a movie

Takes an mpeg video and coverts it to a youtube compatible flv file.

The -r 25 sets the frame rate for PAL, for NTSC use 29.97

-vn removes tha video content, the copy option tells ffmpeg to use the same codec for generating the output

Displays only the VGA adapter/chipset being used for the graphics. In this case, it gave me the "M22" and "Mobility Radeon x300" that I needed to research a graphics issue I was having.

Certain codecs in high res don't play so well on my Dell Mini 9. Using this command, I can play just about anything and it keeps the sound in sync to boot!

Download YouTube videos as .flv and convert them to .3gp for your mobile phone.

When playback of AVI files (containing a video format like XviD or DivX) is stuttering, it in 90% of the files is caused by a poorly or wrongly interleaved file. The issue can be permanently resolved by RE-MUXING the AVI video-files that have this problem