All Questions
60
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
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
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
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
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
0
votes
1
answer
387
views
Send info from ffmpeg to text file & then parsing into a new file
I am trying to scan a directory of .mkv files and output the volume information to out.txt and then parse out.txt for volume_max and send it to log.txt using
for %i in (*.mkv) do ffmpeg -i "%i&...
- 3
0
votes
0
answers
30
views
Trying to clip beginning and ending of clips without loosing quality. Using lossless running into issues
So I have a video file or several actually.
23.769 fps
1080p
Hvec h265 mkv
I'm trying to clip the beginning and ending. It has advertisements I don't want. I have successfully done this using ...
0
votes
0
answers
430
views
Recursively search all subfolders for png images and convert them to one mp4 video
I have timelapse camera that is recording a png picture every 30 seconds. The timelapse system makes a subfolder that has the date as its name and then each subfolder contains png files which are ...
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
280
views
FFMPEG - Copy l-frame range. (-ss -to) And Re-encoding not l-frame range. And merge all?
1- copy between nearest -ss l-frame and -to l-frame.
2- Re-Encoding those not in range of l-frames
3- concat step 1 and 2 :)
The first seconds are wrong when cutting by copying (-c:v copy -a:v copy).
...
- 43
0
votes
0
answers
249
views
ffmpeg unable to parse really long command; Invalid duration specification for to: 00:0011
I'm trying to run an extremely long ffmpeg command but I end up getting an unusual error. I have the following command in a .cmd file:
ffmpeg -ss "00:00:00" -to 00:00:10 -i "F:\MusicGen\...
- 1,620
1
vote
0
answers
98
views
ffmpeg, put 5000 trimmed inputs and filter complex into file?
I have a huge monolithic ffmpeg command and unfortunately I am not able to run it because "the command line is too long." I'm on Windows 10. The exact input command and output can be seen ...
- 1,620
0
votes
1
answer
267
views
FFmpeg : Some blend filter options are missing
FFmpeg gets the following error when I use interpolate or softdifference options of blend filter :
[blend @ 000001cc06193640] [Eval @ 0000000477dfe5e0] Undefined constant or missing '(' in '...
- 175