Am 25.02.2020 um 01:55 schrieb Totte Karlsson
:
>>>
>>> I tried both yuv420p and yuvj420p as suggested, and both results in color
>>> flashing distorted videos.
>>
>> Then please add -pix_fmt gray before "-i".
>
> That seemed to have fixed the issues! Using both "gray" on input and output
> >
> > I tried both yuv420p and yuvj420p as suggested, and both results in color
> > flashing
> distorted videos.
>
> Then please add -pix_fmt gray before "-i".
That seemed to have fixed the issues! Using both "gray" on input and output
seem to work nicely.
Is there a reason/advantage to
Am Mo., 24. Feb. 2020 um 21:06 Uhr schrieb Totte Karlsson
:
>
> > You can try the following:
> > $ ffmpeg -f rawvideo -r 23 -s 658x492 -i pipe -vcodec libx264 -pix_fmt
> > yuv420p -crf
> > 23 output1...
> > $ ffmpeg -f rawvideo -r 23 -s 658x492 -i pipe -vcodec libx264 -pix_fmt
> > yuvj420p -crf
> You can try the following:
> $ ffmpeg -f rawvideo -r 23 -s 658x492 -i pipe -vcodec libx264 -pix_fmt
> yuv420p -crf
> 23 output1...
> $ ffmpeg -f rawvideo -r 23 -s 658x492 -i pipe -vcodec libx264 -pix_fmt
> yuvj420p -crf
> 23 output2...
I tried both yuv420p and yuvj420p as suggested, and both
On 17-02-2020 02:52 am, Ted Park wrote:
Thanks for the response; I'm a little confused about "output pixel format", as
I thought that the -pix_fmt flag is for that. The -pixel_format flag seem to be for the
input.
So question, what flag are you referring to? Is there another flag to be used
> Thanks for the response; I'm a little confused about "output pixel format",
> as I thought that the -pix_fmt flag is for that. The -pixel_format flag seem
> to be for the input.
> So question, what flag are you referring to? Is there another flag to be used
> for the 'output pixel format’?
Am Fr., 14. Feb. 2020 um 19:15 Uhr schrieb Totte Karlsson
:
> ffmpeg.exe -y -vcodec rawvideo -f rawvideo -r 23 -s 658x492 -pix_fmt gray -i
> \\.\pipe\DEV_000F315BEBB8 -c:v libx264 -crf 23 x:\videos\Box_1_2020T140206.avi
You can try the following:
$ ffmpeg -f rawvideo -r 23 -s 658x492 -i pipe
> > I tried both of those, but the resulting video is distorted with random
> > colors flashing
> on the screen.
>
> Try them as the output pixel format not the input.
Thanks for the response; I'm a little confused about "output pixel format", as
I thought that the -pix_fmt flag is for that.
> I tried both of those, but the resulting video is distorted with random
> colors flashing on the screen.
Try them as the output pixel format not the input.
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> > ffmpeg.exe -y -vcodec rawvideo -f rawvideo -r 23 -s 658x492 -pix_fmt
> > gray -i \\.\pipe\DEV_000F315BEBB8 -c:v libx264 -crf 23
> > x:\videos\Box_1_2020T140206.avi
>
> What range does the input level have? mpeg or jpeg?
Each input frame is a grayscale 8bit pixel buffer with a size of
Am Do., 13. Feb. 2020 um 23:45 Uhr schrieb Totte Karlsson
:
> ffmpeg.exe -y -vcodec rawvideo -f rawvideo -r 23 -s 658x492 -pix_fmt gray -i
> \\.\pipe\DEV_000F315BEBB8 -c:v libx264 -crf 23 x:\videos\Box_1_2020T140206.avi
What range does the input level have? mpeg or jpeg?
And which application
Hello,
Regarding h264 videos being dark:
> Please test current FFmpeg git head, remove hide_banner from your command line
> and provide the command line together with the complete, uncut console output.
>
> The output option “r 30” is unneeded and to answer your question: The
> semantic of
>
> Am 06.02.2020 um 20:24 schrieb Totte Karlsson
> :
>
> ffmpeg.exe -y -hide_banner -vcodec rawvideo -f rawvideo -r 30 -s 658x492
> -pix_fmt gray -i \\.\pipe\DEV_000F315BEBB8 -r
> 30 -c:v libx264 -preset veryfast -crf 5 x:\\Videos\output.avi
Please test current FFmpeg git head, remove
Hello,
I'm recording streaming videos from a camera, using ffmpeg. The video stream is
8bit 658x492 grey and the frame rate is 30-60 fps.
Individual frames are fed to a pipe on which ffmpeg is listening. The pipeline
works very reliably.
My command looks like this:
ffmpeg.exe -y -hide_banner
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