Hello,
I have two images named figur001.png and figur002.png that I want to make a
video of 10 seconds, each figure being displayed for 5 seconds.
After command
ffmpeg -framerate 1/5 -i figur%03d.png -c:v libx264 -pix_fmt yuv420p -r 30 -vf
scale=1920:1080 video.mp4
It seems that the full dura
539380] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x56107b539380] ref P L0: 78.2% 2.6% 19.0% 0.1%
[libx264 @ 0x56107b539380] ref B L0: 43.5% 56.5%
On Monday, June 22, 2020, 03:27:27 PM GMT-3, Carl Eugen Hoyos
wrote:
Am Mo., 22. Juni 2020 um 19:45 Uhr schrieb Leonardo via ffmp
22 17:34 +0000, Leonardo via ffmpeg-user wrote:
> I have two images named figur001.png and figur002.png that I want to make a
> video of 10 seconds, each figure being displayed for 5 seconds.
>
> After command
>
> ffmpeg -framerate 1/5 -i figur%03d.png -c:v libx264 -pix_fmt yuv420p
>
>
> On Monday, June 22, 2020, 4:10:16 PM GMT-3, Michael Koch
wrote: >
>
> Am 22.06.2020 um 20:33 schrieb Leonardo via ffmpeg-user:> > Here is the
> full output> >> > $ ffmpeg -framerate 1/5 -i figura%03d.png -c:v libx264
> -pix_fmt y
:33 schrieb Leonardo via ffmpeg-user:
>> Here is the full output
>>
>> $ ffmpeg -framerate 1/5 -i figura%03d.png -c:v libx264 -pix_fmt
>> yuv420p -r 30 -vf scale=1920:1080 video.mp4
>
> It works when you remove the scale filter, but don't ask me why.
It also works w
Hi
>> $ mplayer
>> MPlayer 1.3.0 (Debian), built with gcc-8 (C) 2000-2016 MPlayer Team>>That is
>> too old unfortunately :(>>The timing fix was implemented in SVN revision
>> 37936 and first>released in version 1.4.0 .>> I'd advise to build current
>> development (SVN) version of MPlayer.
I d
Hi,
all suggestions work as expected
ffmpeg -framerate 1/5 -i figura%03d.png -c:v libx264 -pix_fmt yuv420p -r 30
video.mp4
ffmpeg -framerate 1/5 -i figura%03d.png -c:v libx264 -pix_fmt yuv420p -r 30 -s
1920x1080 video.mp4
ffmpeg -framerate 1/5 -i figura%03d.png -c:v libx264 -pix_fmt yuv420p -vf
Hello,
I have a sequence of images, image001.png to image945.png, and I am using this
command to produce a video:
ffmpeg -framerate 60 -i image%03d.png -c:v libx264 -pix_fmt yuv420p -vf
scale=1920:1080,fps=60 -r 60 video.mp4
The video is fine but I would like to improve it. I was thinking in some
Hello,
I have a video (main.mp4 - that has about 52 minutes) that I want to cut its
first 26 seconds.
For this, I'm using command
$ ffmpeg -i main.mp4 -ss 00:00:00.00 -t 00:00:26.00 -c copy part1.mp4
ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 8 (Debia
Hello
>You may want to try the option "-copyinkf" ("copy initial
>non-keyframes") when using "-c copy".
I tried with this option, but the extracted part was "grayed" at the beginning.
The only workaround that I found that worked was
$ ffmpeg -i main.mp4 -vf "trim=start=0:end=26" part1.mp4
Hello
Carl,
> Please test current FFmpeg git head, if the issue is reproducible
> provide an input sample.
I tested with current git and the results were the same.
As noticed by Moritz at the output of ffprobe
$ ffprobe part1.mp4
ffprobe version N-98341-gcca982ee01 Copyright (c) 2007-2020 th
Hello,
I'm trying to use ffmpeg to record the computer screen and also audio from
microfone. Googling I found a lot of "how to". Although I can now record, I do
have a few questions (3):
1) Using command
$ ffmpeg -thread_queue_size 512 -f alsa -ac 2 -ar 44100 -i hw:0,0 -video_size
1024x768 -p
Hello,
I'm trying to use ffmpeg to record the computer screen and also audio from
microfone. Googling I found a lot of "how to". Although I can now record, I do
have a few questions (3):
1) Using command
$ ffmpeg -thread_queue_size 512 -f alsa -ac 2 -ar 44100 -i hw:0,0 -video_size
1024x768 -p
Hello,
> For x264 compressed video use -crf 17see for other options
> https://trac.ffmpeg.org/wiki/Encode/H.264
> For aac audio compression use -b:a 192k for the bitrate see for other
> options https://trac.ffmpeg.org/wiki/Encode/AAC
Thank you
Kind regards,
Leonardo
Hello,
I'm trying to speed up conversion using hardware acceleration and the
improvement is amazing but there a kind of "warning" when using ffmpeg that I
would like to "remove".
Command and output:
$ ffmpeg -vaapi_device /dev/dri/renderD128 -i test.mp4 -vf
'hwupload,scale_vaapi=w=1280:h=72
Hello,
considering the TRIM filter, is it possible to use format HH:MM:SS or only in
seconds?
Kind regards,Leonardo
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or
Hello,
I have a video that I need to extract two parts of it and merge together those
parts. I can accomplish this using the TRIM/ATRIM filter together with the
concat demuxer:
$ ffmpeg -i video.mp4 -vf "trim=start=7:end=1173,setpts=PTS-STARTPTS" -af
"atrim=start=7:end=1173,asetpts=PTS-STARTP
On Friday, July 10, 2020, 1:37:39 AM GMT-3, Gyan Doshi
wrote:
Yes, using the concat filter.
ffmpeg -i video.mp4 -filter_complex
"[0:v]trim=start=7:end=1173,setpts=PTS-STARTPTS[v1];[0:v]trim=start=1260:end=1430,setpts=PTS-STARTPTS[v2];[0:a]atrim=start=7:end=1173,asetpts=PTS-STARTP
Hello,
as an alternative, you can display your webcam at screen with mplayer
$ mplayer tv:// -tv
driver=v4l2:width=640:height=480:device=/dev/video0:fps=30:outfmt=yuy2
-noborder -geometry 640x480+0+0
and record your screen+audio with ffmpeg (here I'm using pulseaudio because of
the "noise-red
What is the output of
$ cat /proc/cpuinfo
?
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Since you have an AMD cpu/apu, one last resort that I can think of is to
capture webcam with hardware acceleration.
Extracted from https://trac.ffmpeg.org/wiki/Hardware/VAAPI
Also, you need to verify what "-vaapi_device" is the correct one for your
machine.
The wiki has much more information.
21 matches
Mail list logo