Hello everyone,
I am currently unable to transcode H264 MKV to HEVC MKV on an AMD Ryzen
3400G running openSuSE Leap 15.2.
Using following command
ffmpeg -loglevel debug -vaapi_device /dev/dri/renderD128 -hwaccel vaapi
-hwaccel_output_format vaapi -i sample.mkv -c:v hevc_vaapi -vf
'hwdownload,
On 10-07-2020 01:01 am, Leonardo via ffmpeg-user wrote:
$ ffmpeg -i video.mp4 -vf "trim=start=7:end=1173,setpts=PTS-STARTPTS" -af
"atrim=start=7:end=1173,asetpts=PTS-STARTPTS" part1.mp4
$ ffmpeg -i video.mp4 -vf "trim=start=1260:end=1430,setpts=PTS-STARTPTS" -af
"atrim=start=1260:end=1430,a
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 7/9/2020 6:10 AM, Nicolas George wrote:
Simon Brown (12020-07-09):
I was wondering if there is any way to use FFmpeg to create a virtual
camera for a PC/Mac from an H264 stream source. I know FFmpeg can use
directshow as an input device.
No, FFmpeg cannot do that.
You may be able to achie
> Unfortunately I can't compile ffmpeg myself on my Windows system.
If you are comfortable with compiling FFmpeg in general but lack
the tools on Windows, you could try the media-autobuild suite.
https://github.com/m-ab-s/media-autobuild_suite
If you need to recompile FFmpeg you can keep your ffm
Simon Brown (12020-07-09):
> I was wondering if there is any way to use FFmpeg to create a virtual
> camera for a PC/Mac from an H264 stream source. I know FFmpeg can use
> directshow as an input device.
No, FFmpeg cannot do that.
You may be able to achieve that with the vivid video driver:
http
I was wondering if there is any way to use FFmpeg to create a virtual
camera for a PC/Mac from an H264 stream source. I know FFmpeg can use
directshow as an input device.
Thanks,
Simon
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thank's all is fine now
François-marie
Le 09/07/2020 à 11:38, Gyan Doshi a écrit :
On 09-07-2020 02:50 pm, François-Marie BILLARD wrote:
Hello,
i'm new on this list and would use ffmpeg for making a video from
pictures.
I have used this command line; with 54 pictures from DSC_0527.JPG :
On 09-07-2020 02:50 pm, François-Marie BILLARD wrote:
Hello,
i'm new on this list and would use ffmpeg for making a video from
pictures.
I have used this command line; with 54 pictures from DSC_0527.JPG :
ffmpeg -f image2 -i DSC_05%2d.JPG -start_number 0527 -r 12 -vcodec
mpeg4 -b 15000k o
Hello,
i'm new on this list and would use ffmpeg for making a video from pictures.
I have used this command line; with 54 pictures from DSC_0527.JPG :
ffmpeg -f image2 -i DSC_05%2d.JPG -start_number 0527 -r 12 -vcodec
mpeg4 -b 15000k ouverture_four.mp4
i have this error, when i launch the
On Thu, Jul 09, 2020 at 10:16:29 +0200, Verachten Bruno wrote:
> The fact that FFMpeg does not compile without this trick of exporting an
> empty CFLAGS variable on aarch64 there: https://trac.ffmpeg.org/ .
> If you consider this is not a bug, that's perfect for me, but in my point
> of view, that
> Could this behaviour be considered as a bug? If so, I can file it.
> What would you like to report where?
>
The fact that FFMpeg does not compile without this trick of exporting an
empty CFLAGS variable on aarch64 there: https://trac.ffmpeg.org/ .
If you consider this is not a bug, that's perfec
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