All Questions
220
questions
1
vote
1
answer
24
views
How can I concatenate videos that don't always have audio using ffmpeg?
I have 5 video files (although, it could be 100s), some with audio, some without. They are more-or-less a consistent size but I'll force that by using something like -vf "320:240" on the ...
- 61
0
votes
0
answers
41
views
Green screen on RTSP stream from USB camera using mediamtx (ffmpeg)
I need to cast a stream from a USB camera via RTSP as stable as possible (at any moment i need to be able to get a static picture on a remote host, reflecting the real state of affairs in front of the ...
- 1
0
votes
1
answer
65
views
How to solve a final pb when merging a series of .ts file with concat command of FFmpeg?
I had dowloaded some videos from the Internet, feaw years ago…
I obtained many files: a series of files in .ts
In my example: a series of 306 files named from segment1_4_av.ts to segment306_4_av.ts
A ...
- 57
-2
votes
2
answers
99
views
How to run an .exe file in command line without adding PATH variable in Windows? [closed]
I've recently downloaded ffmpeg and I need to run it through command line. I'm not able to do that because I don't have admin rights. How do I work around that?
1
vote
0
answers
93
views
D3D11 hardware screen recording with ffmpeg using Intel H264 QSV hardware encoding
I'm trying to screen record using ffmpeg and having it all done via hardware on my Intel integrated graphics.
Specs
For reference, here are my specs:
Windows 11 Pro Version 10.0.22631 Build 22631
...
- 11
1
vote
1
answer
29
views
Seeking with ss dont seem to work in combination with VideoFilter
In FFMPEG I am using the following command to extract frames from a video:
ffmpeg -ss "00:47:13" -i "Video.webm" -vf select="gte(n, 90000)" -vframes 5000 "frames_%d....
- 113
1
vote
2
answers
150
views
FFMpeg: How to get the real return value in bash
I've always used ffmpeg via a cmd-script and I always could check the %ERRORLEVEL% which was always '0' on success or '!0' if an error occured.
I'm trying to recode my cmd-scripts in bash (using msys2 ...
- 13
0
votes
0
answers
201
views
Multithreading in ffmpeg with -f rawvideo
The newly released verion 7.0 of ffmpeg has greatly improved multithreading support for transcoding on the commandline. (https://ffmpeg.org/download.html#release_7.0) Previously transcoding with ...
- 121
1
vote
0
answers
50
views
How can multiple, non-regular segments be extracted from a video using ffmpeg on Windows?
I'm trying to extract some segments from a video (and optionally combine them) using ffmpeg... but I'm not getting very far.
Compared to the various examples I've found here, in the ffmpeg docs and ...
- 61
0
votes
1
answer
206
views
How to Batch Apply Multiple Commands? FFmpeg
I have three commands that I've got to work individually for a set of videos, but cannot get them to apply together. I need to apply all three of these things to every video.
1) add audio, 2) speed up ...
- 1
11
votes
1
answer
4k
views
An unrelated program (Clash for Windows) links to FFmpeg libraries. Can it be spyware?
Update: today I found some decisive evidence on its misbehaviour. Sandbox analysis from VirusTotal on its installer reports video capturing capability using webcam.
See the link to its analysis here.
...
- 383
0
votes
0
answers
147
views
ffplay play h265 video BUG
Test environment:
Two computers, both are WIN10X64
Nvidia GT1030
Intel630 + Nvidia 2070
The same ffplay.exe file; plays the same H265 video file。
Test Results
ffplay -hwaccel cuda -fs f:\video\x265....
0
votes
1
answer
172
views
How can i add audio at specific Frame in FFmpeg?
I have audio that i am adding (without Re-encode) in mute video file, in starting i have intro which has no sound and i want to add audio file after that time/frame , after searching so hard i only ...
- 1
3
votes
1
answer
315
views
How to escape file path for burned-in text-based subtitles with FFmpeg?
I'm trying to burn text-based subtitles into a video using ffmpeg, via the command line option -vf followed by subtitles=(filename):si=(subtitle index). I need this to work for both Windows and macOS.
...
- 165
3
votes
0
answers
6k
views
ffmpeg -vsync deprecated, use -fps_mode
I used to use -vsync -1 to Auto Sync a Audio and Video input stream using the -copy switch as they would get out of sync at times and sometimes not so can't specify any seconds for a delay setting but ...
- 125