Am 21.08.2020 um 21:34 schrieb Michael Koch:
Am 20.08.2020 um 09:57 schrieb Masala Kentaro:
hello!
I have problems using FFmpeg, while trying to convert DNG-sequence
into mp4/mov/avi video file.
While converting, I also need to downgrade the resolution of the video
from original 6016x3200 to 20
> -Original Message-
> From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of
> James Sundquist
> Sent: 27 August 2020 17:35
> To: FFmpeg user questions
> Subject: [FFmpeg-user] Hoping to make multiple input seeking outputs
> based on a text file (inspired by concat)
>
> In
Hi,
I am a newbie about FFmpeg.
I just need it for using Alexa AVS 1.18.0.
While I try to build the FFmpeg for Android, I got a build error like
src/libavformat/udp.c:290:28: error: member reference base type
'__be32' (aka 'unsigned int') is not a structure or union
The PTS value below: 000- 000- 1000 1001 1000 111-, is for a particular case. It will
vary for other videos. I hope that didn't confuse you.
On 08/28/2020 03:51 AM, Michael Koch wrote:
Hello all,
please comment if the following is right or wrong:
-- The timebase of a video (TB
On 08/28/2020 03:51 AM, Michael Koch wrote:
Hello all,
please comment if the following is right or wrong:
-- The timebase of a video (TB in setpts filter) is expressed in the unit [s]
(seconds).
-- The framerate of a video (FR in setpts filter) is expressed in the unit
[s^-1] (1/seconds).
--
On Friday, 28 August 2020, 09:34:48 BST, Paul B Mahol wrote:
>
>http://git.videolan.org/?p=ffmpeg.git;a=history;f=libavcodec/proresdata.h;hb=HEAD
>
>http://git.videolan.org/?p=ffmpeg.git;a=history;f=libavcodec/proresdata.c;hb=HEAD
>
>http://git.videolan.org/?p=ffmpeg.git;a=history;f=libavcod
Am 28.08.2020 um 13:38 schrieb Edward Park:
Hi,
Let's assume the framerate is constant. For example, I want to delay a video by
5 frames and then hstack the original video and the delayed version:
ffmpeg -i test.mp4 -vf "split[a][b];[b]setpts=PTS+5/(FR*TB)[c];[a][c]hstack" -y
out.mp4
I wou
Michael Koch (12020-08-28):
> Let's assume the framerate is constant. For example, I want to delay a video
> by 5 frames and then hstack the original video and the delayed version:
No, let us not make unfounded asumption and let us think in terms of
timestamps. Anything else is a waste of time.
-
Hi,
> Let's assume the framerate is constant. For example, I want to delay a video
> by 5 frames and then hstack the original video and the delayed version:
>
> ffmpeg -i test.mp4 -vf "split[a][b];[b]setpts=PTS+5/(FR*TB)[c];[a][c]hstack"
> -y out.mp4
I would try tpad=start=5, but I'm not sure
On 8/28/20, Michael Koch wrote:
> Am 28.08.2020 um 11:25 schrieb Edward Park:
>> Hello,
>>
>> I am not confident about this info but I've always thought the timebase is
>> usually the reciprocal of the framerate *or smaller*. As in, the duration
>> of a frame can be represented accurately enough a
Am 28.08.2020 um 11:25 schrieb Edward Park:
Hello,
I am not confident about this info but I've always thought the timebase is usually the
reciprocal of the framerate *or smaller*. As in, the duration of a frame can be
represented accurately enough as the difference between the timestamps, whic
Hello,
I am not confident about this info but I've always thought the timebase is
usually the reciprocal of the framerate *or smaller*. As in, the duration of a
frame can be represented accurately enough as the difference between the
timestamps, which aren't counted using seconds, but "ticks" i
Michael Koch (12020-08-28):
> -- The timebase of a video (TB in setpts filter) is expressed in the unit
> [s] (seconds).
> -- The framerate of a video (FR in setpts filter) is expressed in the unit
> [s^-1] (1/seconds).
> -- In many cases the timebase is the reciprocal of the framerate, but this
>
On 8/28/20, Phil Rhodes via ffmpeg-user wrote:
>
> The ProRes implementation is not likely to be perfect in terms of Apple's
> internal spec. They do not publish the spec so we don't know. In general, it
> has been shown to be reasonably reliable when used with most software
> decoders. It has had
The ProRes implementation is not likely to be perfect in terms of Apple's
internal spec. They do not publish the spec so we don't know. In general, it
has been shown to be reasonably reliable when used with most software decoders.
It has had problems in the past (I haven't checked for years) i
Hello all,
please comment if the following is right or wrong:
-- The timebase of a video (TB in setpts filter) is expressed in the
unit [s] (seconds).
-- The framerate of a video (FR in setpts filter) is expressed in the
unit [s^-1] (1/seconds).
-- In many cases the timebase is the reciprocal
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