All Questions
519
questions
116
votes
13
answers
309k
views
How to create a video from images using FFmpeg?
Is it possible to use ffmpeg to create a video from a set of sequences, where the number does not start from zero?
For example, I have some images [test_100.jpg, test_101.jpg, test_102.jpg, ..., ...
vailen
83
votes
6
answers
131k
views
Using desktop as fake webcam on linux
I want to make a live stream of (a window on) my linux desktop using a free streaming site, using the captured video as a fake webcam. There are many tools for this on windows. ffmpeg allows me to ...
- 961
52
votes
4
answers
52k
views
How can I get the length of a video file from the console?
Suppose we have a video file some_video.
How can I get its length from a shell script (with mplayer/transcode/gstreamer/vlc/ffmpeg/whatever)?
VIDEO_LENGTH_IN_SECONDS=`ffmpeg .... -i some_video ... | ...
- 17.3k
42
votes
2
answers
165k
views
How To Check My Current Version of FFMPEG
I have FFMPEG installed on 2 different servers. On one of the servers, i run into an issue every time i try to convert m4v files where ffmpeg just processes the file indefinitely. When I take the ...
- 863
41
votes
9
answers
27k
views
Get MP3 Length in Linux / FreeBSD
I have a bunch of mp3 files with various length. I want to cut it down to 50%-60% length. Says, from 1 minute down to 30 seconds. It should be trivial using ffmpeg. But, I don't know how to determine ...
- 1,173
40
votes
3
answers
54k
views
How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG
How can I create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG?
I used this command to convert an input.avi file to a series of PNG frames:
ffmpeg -y -i input.avi -an -...
user995074
32
votes
4
answers
51k
views
Linux: How to extract frames from a video? (lossless)
I've read a few answers and articles on using programs like VLC, MPlayer, ffmpeg, etc., but none of the methods I've seen are "lossless." They don't capture every single frame. I want to extract each ...
- 561
28
votes
5
answers
36k
views
Speedup a Video on Linux
I don't want to use a player like vlc to speedup the playback. I want to actually speedup playback in the original file; I want the video to be played 2 times faster.
- 3,575
22
votes
4
answers
30k
views
ERROR: cuvid requested, but not all dependencies are satisfied: cuda/ffnvcodec
I am trying to compile FFMPEG with Nvidia Cuda support, on Debian 9.3. Parameters, what I am using:
--enable-cuda --enable-cuvid --enable-nvenc --extra-cflags=-I/usr/local/cuda/include --extra-...
- 334
22
votes
5
answers
26k
views
Ffmpeg Audio Stereo to Mono using only left channel
I use the following command to extract video parts of an '.MTS' record (video).
ffmpeg -i 00402.MTS -s 1280x720 -r 25 -ss 0:00:05.38608 -vcodec libxvid -qscale:v 2 -acodec ac3 -ar 48000 -ab 256k -t 0:...
- 321
20
votes
2
answers
85k
views
How to change ffmpeg -threads settings
Working on a tube site. I'm running videos through ffmpeg on a linux dedicated server to convert to mp4.
The server specs:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte ...
Jacob
16
votes
2
answers
18k
views
Add silence to the end of an MP3
Do any of you know of a way of adding silence of a fixed duration to the end of an MP3, in Linux? For example using MEncoder, FFmpeg, etc?
It needs to be command line as it will be scripted and ...
- 3,029
15
votes
1
answer
56k
views
ffmpeg: yuv420p pixel format missing?
Often when I search online for ffmpeg advice, I find the answer involves using the -pix_fmt yuv420p (or I think also yuv720p) argument. Example: What ffmpeg command line produces video more compatible ...
- 305
15
votes
2
answers
38k
views
Slicing video file into several segments
I am currently using ffmpeg to slice video files. I automated the process through a script called ffmpeg_split.sh. Although this very slow it is efficient in splitting videos into equivalent settings. ...
- 229
13
votes
3
answers
27k
views
ffmpeg command for concatenate two mp3 files
I am using ffmpeg for Concatenating two MP3 files together,
I use this command :
ffmpeg -y -i first.mp3 -i second.mp3 -filter_complex "[0:0][1:0] amix=inputs=2:duration=longest" -c:a libmp3lame ...
- 133