Hello all,
Thanks for this thread, because I have recently published:
- http://ffmpeg.org/pipermail/ffmpeg-devel/2021-January/274978.html
I have requested new versions with CVE fixes:
- https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=ffmpeg
Last builds:
- https://github.com/FFmpeg/FFmpeg/releas
On Fri, Jan 29, 2021 at 11:27 AM "zhilizhao(赵志立)"
wrote:
>
>
>
> > On Jan 27, 2021, at 4:26 PM, Hongyi Zhao wrote:
> >
> > On Wed, Jan 27, 2021 at 10:52 AM pdr0 wrote:
> >>
> >> Hongyi Zhao wrote
> >>> I noticed there are -cgop/+cgop and -g options used by ffmpeg. But I
> >>> really can't figure
> On Jan 27, 2021, at 4:26 PM, Hongyi Zhao wrote:
>
> On Wed, Jan 27, 2021 at 10:52 AM pdr0 wrote:
>>
>> Hongyi Zhao wrote
>>> I noticed there are -cgop/+cgop and -g options used by ffmpeg. But I
>>> really can't figure out the usage of them. Any hints will be highly
>>> appreciated.
>>
>> -
Mark Filipak (ffmpeg) wrote
> I've never heard of "optical flow errors". What could they be? (Got any
> links to
> explanations?)
The artifacts in your video are optical flow errors :)
If you've ever used it - you'd recognize these artifacts. There are very
common
There are about a dozen prot
Mark Filipak (ffmpeg) wrote
> But perhaps by "process in parallel" you mean something else, eh?
> ...something I'm unaware of. Can
> you expand on that?
I mean "divide and conquer" to use all resources. If you're at 20% CPU
usage, you can run 4-5 processes
eg. Split video in to 4-5 segments. Pr
Hello Jason,
unfortunately FF-Works doesn't support audio filters.
Thanks for the suggest.
BEst
Il giorno gio 28 gen 2021 alle ore 18:16 Jason Brodkey
ha scritto:
> When I was trying to wrap my head around ffmpeg for some things, I used
> FF-Works on the Mac.
> It allows for some fairly comp
When I think about it now it might be even better then what I was trying to do
:-)
Thank you for suggesting this I will give it a go
Cheers
Simon
> On 29 Jan 2021, at 00:05, Mark Filipak (ffmpeg) wrote:
>
> Would it be possible for ffmpeg to output raw video frames, one file per
> frame, the
On 01/28/2021 06:30 PM, Szymon Danielczyk wrote:
I have a pipeline like this in which I simulate a video stream
ffmpeg -i input.mov -f matroska - |\
ffmpeg -i - -codec copy -map 0 -reset_timestamps 1 \
-segment_time 10 -f segment output/out%03d.mov
which works and it is splitting the input vid
On 01/28/2021 05:02 PM, pdr0 wrote:
Mark Filipak (ffmpeg) wrote
Is there a way to coax minterpolate to expand its hardware usage?
Not directly;
One way might be to split along cadence boundaries and process in parallel
(e.g. 4x), then reassemble
I've tried that. In fact, that's the first th
I have a pipeline like this in which I simulate a video stream
ffmpeg -i input.mov -f matroska - |\
ffmpeg -i - -codec copy -map 0 -reset_timestamps 1 \
-segment_time 10 -f segment output/out%03d.mov
which works and it is splitting the input video into 10 sec long segment files
saved into outp
On 01/28/2021 02:55 PM, pdr0 wrote:
Mark Filipak (ffmpeg) wrote
In the video,
Look at the behavior of the dots on the gate behind the police here:
0:5.422 to 0:10.127.
Look especially at the top of roof of the building here: 0:12.012 to
0:12.179, for apparent
macroblock errors.
Here's the vi
Mark Filipak (ffmpeg) wrote
> Suppose I explain like this: Take any of the various edge-detecting,
> deinterlacing filters and, for
> each line-pair (y & y+1), align both output lines (y & y+1) to the mean of
> the input's
> line(y).Y-edge & line(y+1).Y-edge. To do that, only single line-pairs ar
On 01/28/2021 04:34 PM, Paul B Mahol wrote:
On Thu, Jan 28, 2021 at 10:23 PM Mark Filipak (ffmpeg)
wrote:
Synopsis:
I seek to use minterpolate to take advantage of its superior output. I
present some performance
issues followed by an alternative filter_complex. So, this presentation
necessari
Paul B Mahol wrote
> On Thu, Jan 28, 2021 at 10:23 PM Mark Filipak (ffmpeg) <
> markfilipak@
> >
> wrote:
>
>> Synopsis:
>>
>> I seek to use minterpolate to take advantage of its superior output. I
>> present some performance
>> issues followed by an alternative filter_complex. So, this presenta
Mark Filipak (ffmpeg) wrote
> Is there a way to coax minterpolate to expand its hardware usage?
Not directly;
One way might be to split along cadence boundaries and process in parallel
(e.g. 4x), then reassemble
(There are other optical flow solutions that use GPU in other software , and
some ar
On Thu, Jan 28, 2021 at 10:23 PM Mark Filipak (ffmpeg)
wrote:
> Synopsis:
>
> I seek to use minterpolate to take advantage of its superior output. I
> present some performance
> issues followed by an alternative filter_complex. So, this presentation
> necessarily addresses 2
> subjects.
>
> Probl
Synopsis:
I seek to use minterpolate to take advantage of its superior output. I present some performance
issues followed by an alternative filter_complex. So, this presentation necessarily addresses 2
subjects.
Problem:
I'm currently transcoding a 2:43:05 1920x1080, 24FPS progressive video
Mark Filipak (ffmpeg) wrote
>
> In the video,
>
> Look at the behavior of the dots on the gate behind the police here:
> 0:5.422 to 0:10.127.
>
> Look especially at the top of roof of the building here: 0:12.012 to
> 0:12.179, for apparent
> macroblock errors.
>
> Here's the video:
>
> https:
On 01/27/2021 03:16 AM, list+ffmpeg-u...@jdlh.com wrote:
This is the part of the minterpolate video filter which defines the options:
https://github.com/FFmpeg/FFmpeg/blob/master/libavfilter/vf_minterpolate.c#L205-L235
[The following looks better in a fixed-pitch font.]
static const AVOption mi
On 01/28/2021 02:05 AM, Carl Eugen Hoyos wrote:
Am 28.01.2021 um 07:26 schrieb Mark Filipak (ffmpeg) :
I'm seeing problems with minterpolate that manifest as occasional visual errors
in particular areas.
Command line, complete, uncut console output and an input file missing.
Carl Eugen
On Thu, Jan 28, 2021 at 9:11 AM Jason Brodkey wrote:
> When I was trying to wrap my head around ffmpeg for some things, I used
> FF-Works on the Mac.
> It allows for some fairly complex situations and, in the logs, provides
> the ffmpeg command that it used to get there.
> My need at the time was
When I was trying to wrap my head around ffmpeg for some things, I used
FF-Works on the Mac.
It allows for some fairly complex situations and, in the logs, provides the
ffmpeg command that it used to get there.
My need at the time was video specific. I'm unsure if it supports all the
audio filters
Hello,
thanks for the reply.
The point is that handbrake doesn't let me access audio filters commands.
I need to use tools like
- 70HZ high pass filter
- expander / noise gate
- equalizer
- compressor
- exciter
- de-esser
- limiter
and handbrake hasn't control over it...or am I wrong?
Thanks.
S
On Thu, Jan 28, 2021 at 7:04 AM Mark Filipak (ffmpeg)
wrote:
> On 01/27/2021 05:47 PM, Carl Eugen Hoyos wrote:
> > Am Mi., 27. Jan. 2021 um 02:03 Uhr schrieb Mark Filipak (ffmpeg)
> > :
> >
> >> ffmpeg -i SOURCE -map 0 -filter_complex "split[1][2], \
> >> [1]telecine=pattern=55, select=not(eq(mod
Hi Marco,
If you are a user of MacOS then have a look at Handbrake. I think there is
a windows version as well but as a Linux user I'm not 100% sure.
If you hunt for "handbrake alternative for X" where X is your operating
system then there should be something!
Thanks,
Chris
On Thu, Jan 28, 2021
Am 28.01.2021 um 09:44 schrieb Marco Mircoli:
Goodmorning everyone.
I'm new to ffmpeg and was wondering if anyone from the group could help me
set up a command line.
My goal is to improve voice audio recordings.
I would like to be able to do this starting from a command line I have in
my script,
Hello,
my problem is that I am not a programmer (I'm a sound designer)
I would like to approach FFMPEG.
It's hard for me to learn the syntax of ffmpeg.
Do you know if is there a tool that let me use ffmpeg filters in a frontend
environment and shows me the command line of what I'm doing?
Thanks
Goodmorning everyone.
I'm new to ffmpeg and was wondering if anyone from the group could help me
set up a command line.
My goal is to improve voice audio recordings.
I would like to be able to do this starting from a command line I have in
my script, modifying it to add:
- 70HZ high pass filter
-
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