> On 21 Apr 2020, at 09:27, adam smith via ffmpeg-user
> wrote:
>
>
> Thanks for the information. I will give it a whirl using the fps filter and
> see what happens.
>
Good news…for me anyway. Carls suggestion appears to be a solution.
The new command is...
ffmpeg -y -i /data/vod-storage-d
> On 20 Apr 2020, at 23:10, Mark Filipak
> wrote:
> May I suggest the following workaround?
>
> Remove the 1st (duplicate) frame with a select filter:
>
> ffmpeg -y -i /data/vod-storage-dev/source/testfile.mxf -vf
> select='not(eq(n\,0))' -r 20/60 -s 283x159 -frames:v 10 -pix_fmt yuvj420p
> On 20 Apr 2020, at 22:51, Carl Eugen Hoyos wrote:
>
> Am Mo., 20. Apr. 2020 um 19:32 Uhr schrieb Edward Park
> mailto:kumowoon1...@gmail.com>>:
>>
>>> Use the output option -r or the fps filter to control the frequency of the
>>> image grabs.
>>> They will show different behaviour wrt the
Hi, Adam,
On 04/20/2020 10:28 AM, adam smith via ffmpeg-user wrote:
Hi you lovely people,
I am trying to output a sequence of jpeg images from a video file. The command
does indeed output a sequence of images, but the first and second are always
duplicates, while the rest run in sequence unti
Am Mo., 20. Apr. 2020 um 19:32 Uhr schrieb Edward Park :
>
> > Use the output option -r or the fps filter to control the frequency of the
> > image grabs.
> > They will show different behaviour wrt the beginning of the grab cycle.
>
> The identical frames at the start is surprising for me, why wou
Hi,
> Use the output option -r or the fps filter to control the frequency of the
> image grabs. They will show different behaviour wrt the beginning of the grab
> cycle.
The identical frames at the start is surprising for me, why would that happen
and not be counted as a duplicate? Does it hap
> On 20 Apr 2020, at 15:38, Edward Park wrote:
>
> If this is accurate, it looks like you have asked it to produce 20 frames in
> 60 seconds, or 1/3 fps, or 1 frame every 3 seconds regardless of input
> framerate, whatever. It will drop frames, duplicate frames, do what is needed
> to keep 1
> Am 20.04.2020 um 18:16 schrieb adam smith via ffmpeg-user
> :
>
>
>> On 20 Apr 2020, at 16:03, Carl Eugen Hoyos wrote:
>> Use -vsync 0 and remove -r.
>
> Thanks for your help Carl.
> Adding the -vsync 0 and removing -r did resolve the issue duplicate image
> output but did not allow me t
> On 20 Apr 2020, at 16:03, Carl Eugen Hoyos wrote:
> Use -vsync 0 and remove -r.
Thanks for your help Carl.
Adding the -vsync 0 and removing -r did resolve the issue duplicate image
output but did not allow me to specify the frequency of the image grabs.
I will search about for something to
> Am 20.04.2020 um 16:28 schrieb adam smith via ffmpeg-user
> :
>
> Any ideas how to stop the duplicate being created?
Use -vsync 0 and remove -r.
Carl Eugen
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Hi,
> /usr/src/app # ffmpeg -y -i /data/vod-storage-dev/source/testfile.mxf -r
> 20/60 -s 283x159 -frames:v 10 -pix_fmt yuvj420p -c:v mjpeg
> /data/vod-storage-dev/temp_out/1cq8tq69tkumv1es0zxeb0ty4qa_%03d.jpeg
...
>Stream #0:0: Video: mpeg2video, yuv422p(tv, top first), 1920x1080 [SAR 1:1
Hi you lovely people,
I am trying to output a sequence of jpeg images from a video file. The command
does indeed output a sequence of images, but the first and second are always
duplicates, while the rest run in sequence until the maximum is reached or the
file runs out.
I am not sure what I ha
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