All Questions
13
questions
11
votes
3
answers
53k
views
Converting images to video using FFMPEG on Windows
I'm trying to convert a series of JPEG images into a time lapse video. They're in the format IMGP0001.JPG, IMGP0002.JPG, etc. From the looks of things, this should match the pattern IMGP%04.JPG.
I've ...
- 294
14
votes
3
answers
28k
views
How to record what's playing on the soundcard using FFmpeg?
I am trying to record what's playing on my soundcard in Windows 8.1
I ran the following to determine what devices I have:
ffmpeg -list_devices true -f dshow -i dummy
The output listed:
DirectShow ...
- 18.8k
5
votes
2
answers
32k
views
Creating a log file for my ffmpeg output
I am trying to find out why my rtsp dos command using FFMPEG is 'freezing'.
Ihave been told I would have more luck on SuperUser but I have been told to produce a log file 1st.
I have looked and I ...
- 939
9
votes
3
answers
20k
views
Streaming Desktop using FFMPEG in Windows
How to stream Desktop using FFMPEG in Windows?
I have tried
ffmpeg -list_devices true -f dshow -i dummy
and after that this to stream
ffmpeg -f dshow -i video="Chicony USB 2.0 Camera" -r 30 -...
- 191
6
votes
1
answer
5k
views
How to use slow motion effect in a specific time interval with ffmpeg
I'm trying to use slow motion effect on my videos. Let's say I have a 2 minutes long video and I want to use this effect between 20 and 30 seconds.
I found this command from a blog:
ffmpeg -i input....
- 379
4
votes
2
answers
3k
views
Looking for a way execute a task on all files in a directory (recursively) on Windows
I have a huge number of mp4 video files that needs to have a volume boost. I need a way to execute a ffmpeg audio filter on all files in a specified base directory (and in subdirectories as well). My ...
- 45
4
votes
1
answer
17k
views
Receiving FFMPEG error -22 when piping data to stdout
I am attempting to use FFMPEG to transcode avi files to mp4 and pipe the data to stdout using the following command (technically through NodeJS, but I receive the same error when executing the ...
- 185
2
votes
2
answers
3k
views
ffmpeg drawtext initialization error
I'm trying to convert an image sequence to a video file with some text overlay(eventually frame counter).
The command I am using
ffmpeg -r 24 -y -i mambo_%05d.png -i ..\3DW_Mambo.wav \
-vf ...
- 155
2
votes
4
answers
14k
views
ffmpeg drawtext fontfile error "Cannot find a valid font for family Sans"
I'm using ffmpeg to burn frame number into video. I suspect the error has something to do with file path.
Here's my command
ffmpeg -i in.mp4 -vf "drawtext=fontfile='E\:\\ffmpegTool\\bin\\arialbd.ttf'...
- 21
2
votes
1
answer
5k
views
How to fix (regenerate) thumbnails for mp4 files in Windows 10 (recorded by Pixel 3)
My Google Pixel 3 phone saves videos as mp4 files that have no thumbnails in Windows Explorer.
(This screenshot shows files on my PC that I'd moved via USB from the Pixel 3.)
Here is an example of an ...
- 1,976
1
vote
0
answers
453
views
ffmpeg capture window bug
ffmpeg-f gdigrab -framerate 30 -video_size 1920x1080 -draw_mouse 1 -i title=Calculator -c:v libx264 -pix_fmt yuv420p -preset ultrafast recording.mp4
That's my command. When i run it i get this error:
...
- 140
0
votes
1
answer
3k
views
Concatenate a list of files with different resolutions
I have a list of mp4 files which are of kb's or of at max 4 MB (they were actually gifs but downloaded as mp4).So when I concatenate them using a list of them the video don't work as all of them are ...
- 33
0
votes
1
answer
2k
views
FFMPEG Windows Generate 360p Video conversion failed
Input :
"C:/server/ffmpeg/bin/ffmpeg.exe" -y -i C:\server\websites\ps\public_www/media/com_hwdmediashare/files/50/4f/37/4185216cb9bb234fd47ee43bf2122e4f.avi -strict experimental -acodec aac -ac 2 -ab ...
- 589