Looks like I figured it out. Removing the -c copy seems to solve the
problem.
Thanks to all that replied.
-Original Message-
From: ffmpeg-user On Behalf Of
ibur...@compuscience.com
Sent: Sunday, June 20, 2021 8:19 PM
To: 'FFmpeg user questions'
Subject: Re: [FFmpeg-user] Is a video gen
Hi all,
I’m trying to correct some distortion with Ffmpeg and have made a lensfun
profile for distortion only, but I can’t really submit it to the lensfun
database as it is for an action camera (Insta360 One R One Inch Edition) that
has stabilisation applied so it is really dependent on the par
Hi Rob,
I believe that your suspicion is correct, it has to do something with the
seek and the frames available. I tried to do several cuts just changing the
start and offset, and the results seem to confirm what you said:
Start = 0, duration 12 - works as expected; final video duration is 12 and
>
> Ffmpeg -i v1.mp4 -i v2.mp4 -filter_complex
> "xfade=transition=hlslice:duration=4:offset=7" -pix_fmt yuv420p output.mp4
>
>
>
> So far so good. The transition happens between 7 and 11 of the new video.
>
>
>
> Now I want to create a new video by extracting the part that has the
> transition, w
On Sun, 20 Jun 2021, 15:51 , wrote:
> Ffmpeg -ss 6 -i input.mp4 -to 6 -c copy output.mp4
>
Did you try without doing a combined stream copy and seek apropos of my
other reply?
Rob
>
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Adding the console output files for the two "cut" commands.
From: ibur...@compuscience.com
Sent: Sunday, June 20, 2021 3:28 PM
To: 'FFmpeg user questions'
Subject: Is a video generated with transitions different from a normal
video?
Let's say that I concatenated two videos using transiti
On Sun, 20 Jun 2021 at 13:28, wrote:
> Now I want to create a new video by extracting the part that has the
> transition, with an additional second on each side, so I want to cut from 6
> to 12 and I use the following:
>
> Ffmpeg -ss 6 -i input.mp4 -to 6 -c copy output.mp4
>
> I expect a final vi
Let's say that I concatenated two videos using transitions (xfade). Does the
final video "know/remember" that part of it was generated through
transitions?
Here is what is going on:
I have two videos with 9 seconds each. I concatenate them using transition
with duration 4 and offset 7. So t
Hello,
I've been trying to record an IP-cam stream (Foscam, mjpg) via http with
ffmpeg.
The stream URL looks like this:
http://192.168.1.123:456/videostream.cgi?user=USERNAME&pwd=PWD
So I created the string (w.o line wrap):
ffmpeg -i -loglevel debug
http://192.168.1.123:456/videostream.cgi?user=
Ah - it looks like this is the issue:
https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=197089
Though not entirely sure what is being done there! Looks like whatever it
is is not an ffmpeg issue
On Sun, Jun 20, 2021 at 11:13 AM Ben Barker wrote:
> I am using ffmpeg to record from a UVC w
I am using ffmpeg to record from a UVC webcam for X seconds that appears as
/dev/videoX
I have found that if a recording finishes, and I try to start another with
the same command within ~0.5 seconds, I occasionally get an error that the
device is not available.
I assume this is down to some issu
On Sat, Jun 19, 2021 at 8:50 PM wrote:
> Correction - adding the pix_fmt worked "Parcially"...
> When I checked it further I noticed that in the final video, the first part
> (before the transition) had the audio, but the second part had only video
> without the audio.
> I'm probably missing some
using two features of ffmpeg I can get accurate cue points out of an
audio file based on silences
ffmpeg -hide_banner -i $AUDIO -af silencedetect=noise=-50dB:d=0.898 -f
null - &> somewhatuseful.txt
and employ them to edit the audio
ffmpeg -y -hide_banner -loglevel error -i $AUDIO -ss $HEADNU
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