Dear Sir, Madam,
I am trying to figure out whether a format is seekable. It was suggested to
me to check the context->iformat (AVInputFormat) flags and whether
read_seek/read_seek2 are non-NULL. That however does not work correctly for
the dshow and gdigrab avdevice input formats, as these do not
That macro doesn't work in C++. use:
char a[AV_ERROR_MAX_STRING_SIZE] = { 0 };
av_make_error_string(a, AV_ERROR_MAX_STRING_SIZE, errCode_);
On Thu, Jun 10, 2021 at 12:40 PM 沈海煌 wrote:
>
> I use av_err2str function in c++, it occurs " error: taking address of
> temporary array" when build.
>
>
av_frame_alloc alone is not enough, you also need to allocate the
memory for the image data, e.g. using av_image_alloc
see e.g.
https://ffmpeg.org/doxygen/trunk/doc_2examples_2decoding_encoding_8c-example.html
On Mon, Jul 12, 2021 at 1:09 PM 李罗 wrote:
>
>
> I have already connected and opened c
Hi Paul,
On Wed, Mar 30, 2022 at 1:53 PM Paul B Mahol wrote:
>
> Hello,
>
> I would like to inform you about the new tool, located here:
>
> https://github.com/richardpl/lavfi-preview
>
> It is GUI filtergraph editor and foremost ffmpeg's libavfilter filtergraph
> preview tool.
>
> It is in early
Hi Steve,
On Mon, Apr 11, 2022, 11:47 Steve Russell wrote:
> Ah, that's useful, thanks - I'll take a look at OBS Studio.
>
> I do, however, think there should be a way to do what I want with ffmpeg.
> If the GUI tool can change the settings, it's hard to believe that there's
> not a command line
On Sun, May 29, 2022 at 4:04 AM Bang He wrote:
>
> my application code will call some ffmpeg api.
>
> here is my code which call ffmpeg api:
> printf("pts %s\n", av_ts2timestr(packet.pts, stream->time_base));
>
> error when compiled:
> ffmpeg/include/libavutil/timestamp.h:76:83: error: taking addr
Hi Paul,
On Mon, Oct 31, 2022 at 10:35 AM Paul B Mahol wrote:
>
> On 4/24/22, Bang He wrote:
> > hwo to run it
> >
>
> There are now binaries auto build for Windows and Linux and are ready
> for download.
> All for 64bit.
This is super! Really nice to play with. I have trouble understanding
one
Hi Paul,
On Mon, Oct 31, 2022 at 11:51 AM Paul B Mahol wrote:
>
> On 10/31/22, Diederick C. Niehorster wrote:
> > So more generally, how to preview and then edit the filter graph?
>
> If it played out and video is gone, just press Ctrl+Enter again
> and after that Shift + Q
Hi Mark,
On Thu, Feb 15, 2024, 19:42 Mark Filipak wrote:
> Here is my first finding.
> Can someone who reads 'C' code locate the code and investigate?
>
As told to you many times now, you need to provide a complete command line,
with accessible input files, so that others can reproduce. Else n
On Thu, Sep 5, 2024 at 8:19 AM Andrew Randrianasulu
wrote:
>
> so, I used ffmpeg git up to d9f594209fb1a9c87017034f943dcb311a9d2896
>
> make testprog (after ./configure)
>
> then I ran
>
> guest@slax:/dev/shm/ffmpeg/libswscale/tests$ ./swscale -dst yuv444p >
> yuv444.log
> cat yuv444.log | grep f
Its not. Provide the command line that causes this and the full ffmpeg
output, including the header showing the header and the eventual error
On Fri, Aug 8, 2025, 20:47 Mark Filipak wrote:
> On 08/08/2025 14.01, Reindl Harald wrote:
> > Am 08.08.25 um 17:35 schrieb Mark Filipak:
> >> FFmpeg is c
You have the line:
set _CODEv_=-map "[v]" -c:v mpeg2video -profile simple -level 3
On Fri, Aug 8, 2025, 23:44 Mark Filipak wrote:
> On 08/08/2025 16.30, Diederick C. Niehorster wrote:
> > Its not. Provide the command line that causes this and the full ffmpeg
> > out
12 matches
Mail list logo
