Carl Eugen Hoyos:> 2018-09-10 6:04 GMT+02:00, astian :
>
>> I want to dynamically (per frame) zoom out/scale down
>> a video below 100% size.
>
> Isn't it sufficient to pad first, and use zoompan in a later
> filter?
Do you mean work in reverse? Scale down, pad, zoompan in reverse, then reverse
Gyan:
> On Mon, Sep 10, 2018 at 9:34 AM astian wrote:
>
>>
>> I want to dynamically (per frame) zoom out/scale down a video below 100%
>> size.
>> It seems that the zoompan filter would be ideal for this case, but
>> unfortunately it clamps the zoom ratio to [1,10], that is, it only zooms
>>
2018-09-12 16:27 GMT+02:00, Zaid Amir :
>> What does not work?
>
> If I provide a valid video, it fails with the errors shown in
> the logs from the original email.
(And I assume the output is wrong, no?)
Every video file or only certain types?
Can you run "md5sum" on the target system?
Carl
thanks!
On Wed, 12 Sep 2018 at 11:48, Moritz Barsnick wrote:
> On Wed, Sep 12, 2018 at 11:10:19 -0700, Peter Gusev wrote:
> > relevant question - is there a way to dump argb frames to a file pipe
> (not
> > stdout)?
>
> Is a "file pipe" what Unix calls a "fifo" or "named pipe"? Sure, just
>
On Wed, Sep 12, 2018 at 11:10:19 -0700, Peter Gusev wrote:
> relevant question - is there a way to dump argb frames to a file pipe (not
> stdout)?
Is a "file pipe" what Unix calls a "fifo" or "named pipe"? Sure, just
replace "-" or "pipe:" with the name of the named pipe.
Moritz
relevant question - is there a way to dump argb frames to a file pipe (not
stdout)?
On Wed, 12 Sep 2018 at 10:52, Peter Gusev wrote:
> this actually helped! thanks a lot!
>
> On Wed, 12 Sep 2018 at 09:37, Kieran O Leary
> wrote:
>
>> Hi
>>
>> On Wed, 12 Sep 2018, 17:09 Peter Gusev, wrote:
>>
this actually helped! thanks a lot!
On Wed, 12 Sep 2018 at 09:37, Kieran O Leary
wrote:
> Hi
>
> On Wed, 12 Sep 2018, 17:09 Peter Gusev, wrote:
>
> > Hi! well I'm sure the ones I tried are incorrect as I'm not familiar with
> > ffmpeg much. But here's one of them:
> >
> > ffmpeg -f
Hi
On Wed, 12 Sep 2018, 17:09 Peter Gusev, wrote:
> Hi! well I'm sure the ones I tried are incorrect as I'm not familiar with
> ffmpeg much. But here's one of them:
>
> ffmpeg -f avfoundation -framerate 30 -i "0" -f rawvideo -pix_fmt argb - |
> ffplay -f rawvideo -s1280x720 -pix_fmt argb -i -
>
Hi! well I'm sure the ones I tried are incorrect as I'm not familiar with
ffmpeg much. But here's one of them:
ffmpeg -f avfoundation -framerate 30 -i "0" -f rawvideo -pix_fmt argb - |
ffplay -f rawvideo -s1280x720 -pix_fmt argb -i -
ffmpeg version 3.4ffplay version 3.4 Copyright © 2000-2017 the
> Do the jpg files look as expected?
The generated jpegs look identical. Color bars with some scattered pixels and a
diagonal bar going through them
> What does not work?
If I provide a valid video, it fails with the errors shown in the logs from the
original email.
2018-09-12 1:25 GMT+02:00, Peter Gusev :
> Hi there! I need to capture video from a camera (macOS) and then pass it
> through a file pipe to ffplay for displaying it. Can't figure out how to
> specify ffmpeg's output pixel format. When passing -pix_fmt argb ffmpeg
> says that the format is
2018-09-12 8:01 GMT+02:00, Zaid Amir :
> Running ' ffmpeg -f lavfi -i testsrc2 -vframes 10 out%2d.jpg'
> gives this output:
Do the jpg files look as expected?
What does not work?
(Is it file input that is not working?)
Carl Eugen
___
ffmpeg-user
2018-09-10 6:04 GMT+02:00, astian :
> I want to dynamically (per frame) zoom out/scale down
> a video below 100% size.
Isn't it sufficient to pad first, and use zoompan in a later
filter?
Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
On Wed, Sep 12, 2018 at 3:00 PM Aviv Hurvitz wrote:
>
> I'll try to delve into the HEVC stream format, maybe I'll see a record of
> the skipping in there. I hope there is a frame index or time stamp per
> frame within. (?)
>
Suggest you try mp4box to mux the raw stream into MP4.
Gyan
On Mon, Sep 10, 2018 at 9:34 AM astian wrote:
>
> I want to dynamically (per frame) zoom out/scale down a video below 100%
> size.
> It seems that the zoompan filter would be ideal for this case, but
> unfortunately it clamps the zoom ratio to [1,10], that is, it only zooms
> in/scales up. Why?
I tried converting to mkv but it exhibited the same "skipping" problem.
I'll try to delve into the HEVC stream format, maybe I'll see a record of
the skipping in there. I hope there is a frame index or time stamp per
frame within. (?)
On Wed, Sep 12, 2018 at 12:40 AM Carl Eugen Hoyos
wrote:
>
On 9/12/18, Michael Koch wrote:
> Am 12.09.2018 um 09:55 schrieb Paul B Mahol:
>> Hi,
>>
>> On 9/12/18, Michael Koch wrote:
>>> Is it possible to multiply audio samples from two sources?
>>> I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
>>> range. First apply a strong 15kHz
Am 12.09.2018 um 09:55 schrieb Paul B Mahol:
Hi,
On 9/12/18, Michael Koch wrote:
Is it possible to multiply audio samples from two sources?
I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
range. First apply a strong 15kHz highpass filter, then multiply the
signal with a
Hi,
On 9/12/18, Michael Koch wrote:
> Is it possible to multiply audio samples from two sources?
> I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
> range. First apply a strong 15kHz highpass filter, then multiply the
> signal with a 15kHz sine wave (which produces sum and
Is it possible to multiply audio samples from two sources?
I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
range. First apply a strong 15kHz highpass filter, then multiply the
signal with a 15kHz sine wave (which produces sum and difference
signals), then apply a 10kHz
> Did you use the *identical* input file in both environments (the successfull
> and the failing env)?
Yes I did, and tried multiple files all fails on lambda but succeed on the EC2
instance.
>Did you use the identical ffmpeg binary in both environments? E.g. the
>ffmpeg-4.0.2-static
Yes I am testing on the same file both on the EC2 instance and lambda function.
Running ' ffmpeg -f lavfi -i testsrc2 -vframes 10 out%2d.jpg' gives this output:
ffmpeg version N-91639-g85c0064 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
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