Am 09.03.21 um 13:07 schrieb Nicolas George:
-c copy tells ffmpeg to dispense with the decoder, which means it does
not count frames but packets. Have you tried telling ffprobe to count
packets?
So for correctness, ffmpeg should report packets instead frames in its progress
output line, at le
Am 09.03.21 um 11:53 schrieb Moritz Barsnick:
On Tue, Mar 09, 2021 at 11:07:21 +0100, Ulf Zibis wrote:
Am 09.03.21 um 10:43 schrieb Ulf Zibis:
I suspect that the last "progression" line shows the exact count,
as it may only report the last progression state a few µs before
the op
Am 09.03.21 um 14:22 schrieb Nicolas George:
Ulf Zibis (12021-03-09):
So for correctness, ffmpeg should report packets instead frames in its
progress output line, at least with -c copy ... or please correct me.
Would you insist on people saying that the mailman brings envelopes
instead of
Am 09.03.21 um 11:48 schrieb Peter White:
On Tue, Mar 09, 2021 at 11:07:21AM +0100, Ulf Zibis wrote:
Am 09.03.21 um 10:43 schrieb Ulf Zibis:
Am 09.03.21 um 09:57 schrieb Peter White:
The frame count *is* exact. The way to get there is just not that
pretty. If anybody on this list knows a
Am 09.03.21 um 12:25 schrieb Reindl Harald:
as said: bunch of idiots!
Please take into account, that people tend to completely ignore posts of people
who repetitively express as such, me too in most cases. This time I do an
exception!!!
when someone tells me "don't top post" and i don't un
Am 09.03.21 um 16:27 schrieb Peter White:
Hi all,
as a follow-up to this discussion:
https://ffmpeg.org/pipermail/ffmpeg-user/2021-March/052358.html
I would like to ask, if frame counting with ffprobe can be made faster.
The way it done now is obviously by decoding every single frame and
after
Hi,
is it possible to assemble several videos in one Matroska container, just like
it is common on DVDs?
As result, I want a structure like:
+ Title 1
+ Chapter 1
+ Chapter 2
+ Title 2
+ Chapter 1
+ Chapter 2
+ Chapter 3
+ Title 3
[.]
As originals I have .mkv videos, already with
Am 12.03.21 um 17:00 schrieb Peter White:
On Fri, Mar 12, 2021 at 03:51:11PM +0100, Nicolas George wrote:
Peter White (12021-03-12):
but that is because a packet needs to be decoded first to get the frame.
Please be complete in your statements:
... with some obscure codecs or if libavcodec h
Hi,
is it possible to assemble several videos in one Matroska container, just like
it is common on DVDs?
As result, I want a structure like:
+ Title 1
+ Chapter 1
+ Chapter 2
+ Title 2
+ Chapter 1
+ Chapter 2
+ Chapter 3
+ Title 3
[.]
As originals I have .mkv videos, already with
Hi,
here is the original: http://www.jugkoeln.de/Videos/Mak/Mak.mpg
transcoded to mp4: http://www.jugkoeln.de/Videos/Mak/Mak.mp4
On the clapping hands, you see typical interlacing patterns.
deinterlaced with bwdif: http://www.jugkoeln.de/Videos/Mak/Mak_bwdif.mp4
... with bwdif=1:0: http://www.ju
Hi,
does anyone know a good guide how to denoise mpeg2 videos, which come from VHS
videos, recorded with DVD-recorder?
My goal is to reduce the bit rate as much as possible.
From my view, the most disturbing is the temporal noise.
Some few videos in "long play" recordings too show heavy blockin
Am 11.04.21 um 20:46 schrieb Carl Zwanzig:
I assume you're stuck with the captures you already have, yes? (Most of the
issues come from the analog world and ought to be fixed there- a TBC on the
playback deck output, capturing YC outputs if available instead of composite,
cleaning the playbac
Hi Christoph,
Am 03.04.21 um 00:42 schrieb Christoph Gerstbauer:
Hello, forget my last mail. The original video is destroyed in the first place.
If you SPLIT the fields from the original MPG you see PER FIELD interlacing
artefacts. That is a sign that the original video from tape was not corre
Am 12.04.21 um 08:53 schrieb Michael Koch:
Am 12.04.2021 um 00:39 schrieb Ulf Zibis:
My question is not about head-switching effects, it mainly is about temporal
noise. E.G., there is the hqdn3d filter, which can do both, spacial and
temporal denoise. But I'm missing some guidance
Hi,
I want to filter a video from pts 0 to 1999 with filter A, then from 2000 to
2199 with filter B, from 2200 with filter A and finally the whole stream with
filter C.
Can one please give me an example for a working command line?
-Ulf
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Am 22.04.21 um 13:01 schrieb Michael Koch:
untested:
ffmpeg -i input.mp4 -lavfi
split[a][b];[a]filter_A[c];[b]filter_B[d];[c][d]select=bitor(between(t,0,1999),between(t,2200,1)),filter_C
out.mp4
Much thanks for this great help.
To find the time, from where I will change the filter, I
Am 22.04.21 um 21:59 schrieb Jim DeLaHunt:
On 2021-04-22 08:26, Ulf Zibis wrote:
…with exact frame count instead unsing -ss, which only counts in seconds?
Just to be sure the obvious is stated out loud: the parameter to -ss can be a
floating-point number, meaning you can make it as precise
Am 22.04.21 um 13:01 schrieb Michael Koch:
Am 22.04.2021 um 12:50 schrieb Ulf Zibis:
Hi,
I want to filter a video from pts 0 to 1999 with filter A, then from 2000 to
2199 with filter B, from 2200 with filter A and finally the whole stream with
filter C.
Can one please give me an example
Thanks ...
Am 23.04.21 um 09:04 schrieb Michael Koch:
Please have a look at the "streamselect" filter instead of "select".
Will do later.
However the problem might be easier to solve if your filters A, B and C have timeline
support with "enable" option. Use this command to find out if yo
Am 23.04.21 um 13:56 schrieb Michael Koch:
Am 23.04.2021 um 13:35 schrieb Nicolas George:
Ulf Zibis (12021-04-23):
I already had checked that. Unfortunately, crop has no timeline support:
How would that work? Enabling or disabling crop changes the output
resolution, which is not supported
Am 23.04.21 um 08:07 schrieb Michael Koch:
The "between" function is including at both ends of the interval.
Thanks for the info.
Oh what a pitty ... imagine I set the upper border of the lower range to
10:23.59, the lower border of the upper range to 10:23.60 and there is a frame
at 10:2
Am 23.04.21 um 08:31 schrieb Gyan Doshi:
On this topic generally, see https://superuser.com/q/1632998/
Much thanks for this hint. I was successful with this approach:
ffmpeg -i 'Stille Tage in Clichy.mpg' -vf
"split=3[a][b][c];[a]trim=0:2888.36,setpts=PTS-STARTPTS,crop=352:496:0:36[a];[b]tri
Am 23.04.21 um 21:20 schrieb Leo Butler via ffmpeg-user:
I would put the select filters before filter_A, etc., rather than after.
I would use the concat filter at the end to concatenate the streams.
Otherwise, out.mp4 ends with 3 parallel video streams.
May be that would work, but I didn't tes
Hi,
I have some photos from a iPhone in HEIC format. Is there a chance, to convert them to a
"normal" format?
ffplay says:
$ ffplay IMG_0416.HEIC
ffplay version 4.2.4-1ubuntu0.1 Copyright (c) 2003-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
configuration: --prefix=/
Am 16.05.21 um 00:13 schrieb Leo Butler via ffmpeg-user:
Ulf Zibis writes:
Hi,
I have some photos from a iPhone in HEIC format. Is there a chance, to convert them to a
"normal" format?
Try
convert image.heic image.jpg
convert is a program in the imagemagick sui
Am 16.05.21 um 00:13 schrieb Leo Butler via ffmpeg-user:
Try
convert image.heic image.jpg
Unfortunately it does not work:
$ convert IMG_0416.HEIC IMG_0416.JPG
convert-im6.q16: no decode delegate for this image format `HEIC' @
error/constitute.c/ReadImage/560.
convert-im6.q16: no images defi
Am 28.05.21 um 11:44 schrieb Michael Koch:
Am 28.05.2021 um 11:25 schrieb Flavio Sartoretto:
I use ffmpeg in order to convert fname.flv video to mp4:
ffmpeg -i fname.flv -c:v mpeg4 -copyts -loglevel verbose fname.mp4
The video quality of my output is bad. How can I improve it?
Add -q:v 1 to
Hi,
if I understand correct, mp4 videos are encoded in blocks of 16x16 pixels. I
I'm wondering if I could crop a video by multiples of 16 pixels without
reencoding the remaining blocks.
-Ulf
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Am 16.08.21 um 00:26 schrieb Android PowerUser:
The 2011 PC probably cost more than I've ever spent on smartphones.
You will tell us, that you spent less money on smartphones over a period of 10
years than 1 PC?
In my experience, the average time of use of smartphones is only 2 - 4 years.
-
Am 16.08.21 um 00:32 schrieb Android PowerUser:
That always depends on the codec and probably also on the bit rate and
resolution. MP4 is just a container format.
I mean mp4 with default libx264 codec.
-Ulf
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Am 16.08.21 um 00:48 schrieb Android PowerUser:
Ich muss zugeben die Hardware Anforderungen sind für Smartphones schnell
gestiegen... Ich komm aus einer konservativen Familie. Deshalb habe ich
überhaupt erst seit 2015 mobile Geräte. Deswegen ist der Vergleich auch
unfair. Ich habe zu wenig beach
Am 16.08.21 um 09:44 schrieb Nicolas George:
Ulf Zibis (12021-08-16):
if I understand correct, mp4 videos are encoded in blocks of 16x16
pixels. I I'm wondering if I could crop a video by multiples of 16
pixels without reencoding the remaining blocks.
It depends on the codec, not the f
Hi,
why is the framerate automatically changed here from 29.98 fps to 120 fps, and
how can I prevent from this ?
$ ffmpeg -i Demo\ 31.10.2020\ Köln\ Vorspiel+Zugriff.mp4 -vf
crop=640:320:640:176 Demo\ 31.10.2020\ Köln\ Vorspiel+Zugriff\ Ausschnitt.mp4
ffmpeg version 4.4-static https://johnvans
Am 23.08.21 um 07:15 schrieb Adam Nielsen via ffmpeg-user:
why is the framerate automatically changed here from 29.98 fps to 120
fps, and how can I prevent from this ?
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720, 2508 kb/s, 29.98 fps, 120 tbr, 90k tbn, 2k tb
Am 23.08.21 um 07:44 schrieb Gyan Doshi:
You can add `-fpsmax 30` with v4.4 or newer. This will limit output rate to 30
if the input is higher else keep the original rate.
With that I get a rate of 30 instead of the original 29.98, so each 50th frame
gets duplicated, which I value as nonse
Am 24.08.21 um 13:51 schrieb Ulf Zibis:
Am 23.08.21 um 07:15 schrieb Adam Nielsen via ffmpeg-user:
why is the framerate automatically changed here from 29.98 fps to 120
fps, and how can I prevent from this ?
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720
Am 23.08.21 um 07:15 schrieb Adam Nielsen via ffmpeg-user:
why is the framerate automatically changed here from 29.98 fps to 120
fps, and how can I prevent from this ?
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1280x720, 2508 kb/s, 29.98 fps, 120 tbr, 90k tbn, 2k tb
Am 24.08.21 um 13:51 schrieb Ulf Zibis
I guess you could use the -r option to override this and force a
specific framerate if you want something different?
Yes, this works fine. But I would appreciate, if I could use something like
-r=inputrate or --keep_framerate
I've found out,
Hi,
I have learned, that ffmpeg respects a given tbr value as output frame rate.
Now I'm questioning the advantage of that behaviour. Can someone tell me?
I only see disadvantages:
- the video becomes encoded with lower quality, i.g. q=33.0 instead q=29.0
- the video size is 13 % bigger, e.g. 5
Hi,
how can I correct a vertically flipped mp4 video without re-encoding? The left
side is on the right side and vice versa.
Thanks,
-Ulf
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Am 28.06.22 um 13:45 schrieb Ulf Zibis:
Hi,
how can I correct a vertically flipped mp4 video without re-encoding? The left
side is on the right side and vice versa.
I tried:
ffmpeg -i input.mp4 -c copy -metadata:s:v:0 flip=horizontal output.mp4
But this changed nothing :-(
$ ffprobe
Am 28.06.22 um 14:59 schrieb Moritz Barsnick:
Metadata flags do exist for rotating, but not for flipping. Thus this
cannot be done without re-encoding.
I'm irritated. Here I can read, that it exists:
https://ffmpeg.org/ffmpeg-all.html#toc-h264_005fmetadata
Even for rotation, the player needs
Am 28.06.22 um 15:14 schrieb Ulf Zibis:
Am 28.06.22 um 14:59 schrieb Moritz Barsnick:
Metadata flags do exist for rotating, but not for flipping. Thus this
cannot be done without re-encoding.
I'm irritated. Here I can read, that it exists:
https://ffmpeg.org/ffmpeg-all
Am 28.06.22 um 17:01 schrieb Gyan Doshi:
That's a H.264 bitstream filter. It can only be used on H.264 video streams.
This is the case here.
Basic syntax is
ffmpeg -i input -c copy -bsf:v
h264_metadata=display_orientation=insert:flip=horizontal output
Much thanks for this syntax.
Un
Am 05.07.22 um 23:55 schrieb Carl Zwanzig:
For dealing with minor size changes, an option is a filter chain to crop larger
frames to the target size then center/overlay the result on a target-sized
black background.
As alternative to cropping, you can use the "fillborders" filter.
- Ulf
__
Hi,
I have transcoded a avi video to mp4 for compressing by factor 8. Now I see
interlace artifacts. E.g. the eagle in the back window of the bus or the fence
in the background.
Additionally I would like to reduce the noise for even better compression. Any
hint for a good filter?
Refer:
http:
Am 12.11.22 um 10:57 schrieb Bouke / Videotoolshed:
Hi Ulf,
This is normal DV interlaced video. Open the .avi with VLC and turn OFF
de-interlace, you’ll see how gorgeous the motion was on an old fashioned
interlace aware screen.
So, you need to de-interlace the filter.
While you’re at it, yo
Am 12.11.22 um 14:41 schrieb Carl Eugen Hoyos:
https://ffmpeg.org/ffmpeg-filters.html offers a few options:
kerndeint is old / outdated, should be fast
yadif was for a long time the most useful deinterlacer
w3fdif is a BBC-sponsored development
bwdif claims to combine yadif and w3fdif into some
Am 12.11.22 um 17:09 schrieb Carl Zwanzig:
On 11/12/2022 8:02 AM, Ulf Zibis wrote:
Thanks for your detailed comparison. bwdif and estdif make it. Even they double
the frame rate, compression factor now is 10 instead 8 and the visual result is
brillant.
For the list archive, would you
Hi,
With this command I tried to enhance a short video:
ffmpeg -i NET\ Villa\ Burgen.mp4 -vf atadenoise,histeq=0.1:0.11:strong -c:a
copy -movflags +faststart NET\ Villa\ Burgen_3.mp4
(using ffmpeg version 5.1.2-0ubuntu1~22.04.sav1.1)
It helps a lot for the first 2 minutes, but from there in the
Hi,
because of a domain relocation, my email was not reachable from 2023-09-01
13:54 UTC to 2023-09-04 11:38 UTC.
Is it possible to resend the missing messages for ffmpeg-user@ffmpeg.org and
ffmpeg-de...@ffmpeg.org?
-Ulf
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Am 04.09.23 um 14:43 schrieb Reindl Harald:
Am 04.09.23 um 14:35 schrieb Ulf Zibis:
because of a domain relocation, my email was not reachable from 2023-09-01
13:54 UTC to 2023-09-04 11:38 UTC.
Is it possible to resend the missing messages for ffmpeg-user@ffmpeg.org and
ffmpeg-de
Am 04.09.23 um 14:59 schrieb Reindl Harald:
Am 04.09.23 um 14:35 schrieb Ulf Zibis:
because of a domain relocation, my email was not reachable from 2023-09-01
13:54 UTC to 2023-09-04 11:38 UTC.
because it takes time?
the interval of retries increases as it makes no sense trying every 5
Hi,
I guess it stands for "-color_range limited", but even that I don't understand
what it means.
Where does the calculation "MPEG (219*2^(n-8))" come from?
-Ulf
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Am 01.10.23 um 12:02 schrieb Ulf Zibis:
Hi,
I guess it stands for "-color_range limited", but even that I don't understand
what it means.
Where does the calculation "MPEG (219*2^(n-8))" come from?
And how can I know, in which version of FFMPEG this p
Am 01.10.23 um 14:05 schrieb Paul B Mahol:
On 10/1/23, Ulf Zibis wrote:
And how can I know, in which version of FFMPEG this patch was released?
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7ca71b79f2b3256a0eef1a099b857ac9e4017e36
By searching for that commit log in git log of
Hi,
I used the following command on a 155 minute grabbing:
ffmpeg -video_size 1680x888 -framerate 25 -f x11grab -i :0.0+0,81 -c:v
libx264rgb -crf 0 -preset ultrafast output.mkv
Assuming, the RGB range is 8 + 8 + 8 bit or 3 byte, I calculate:
3 x 25 x 60 x 155 x 1680 x 888 = 1040.6 GByte
But
Am 01.10.23 um 16:37 schrieb Paul B Mahol:
On 10/1/23, Ulf Zibis wrote:
Hi,
I used the following command on a 155 minute grabbing:
ffmpeg -video_size 1680x888 -framerate 25 -f x11grab -i :0.0+0,81 -c:v
libx264rgb -crf 0 -preset ultrafast output.mkv
Assuming, the RGB range is 8 + 8 + 8 bit
Am 01.10.23 um 18:04 schrieb Carl Zwanzig:
On 10/1/2023 8:41 AM, Ulf Zibis wrote:
So here it compresses with factor ~11, wow, great performance for ultrafast.
Depends a lot on the content, of course. One of the great things,
compression-wise, with screen grabs is that there is usually very
Hi,
I have a video, grabbed from screen with "-c:v libx264rgb -crf 0 -preset
ultrafast".
When I re-encode a small scene out of it, it counts 576 frames. (Same number of
images, when I extract all frames as JPEG.)
But when I just do a stream copy, I get 761 frames, even when I use "-fps_mode:v
Am 01.10.23 um 23:25 schrieb Ferdi Scholten:
On 01-10-2023 19:28, Ulf Zibis wrote:
Hi,
I have a video, grabbed from screen with "-c:v libx264rgb -crf 0 -preset
ultrafast".
When I re-encode a small scene out of it, it counts 576 frames. (Same number of
images, when I extract
Hi,
I have experienced ~11 % dropped frames while screen grabbing, see below.
When I used simplescreenrecorder [1], which also uses FFmpeg libraries under the hood, I
had less than 1 % frame drops with the parameters
"vcodec=libx264rgb,crf=0,preset=ultrafast" and the same dimensions.
[1] https
Am 01.10.23 um 12:02 schrieb Ulf Zibis:
Hi,
I guess it stands for "-color_range limited", but even that I don't understand
what it means.
Where does the calculation "MPEG (219*2^(n-8))" come from?
My question is because of this suggestion:
https://trac.ffmpeg
Hi,
what is the difference between i-frames and key frames?
And how many other frames are between i-frames or key frames in mp4 files,
created with ffmpeg and with default settings?
-Ulf
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Hi,
I have concatenated 2 mkv videos, both with video and audio stream. In the
resulting mkv video in the 2n part, there is no audio anymore.
What can I do, to have audio also in the 2nd part.
$ ffmpeg -f concat -safe 0 -i <(echo "file '$PWD/König_de.mkv'" && echo "file
'$PWD/König_de_Abspann
Am 13.10.23 um 01:49 schrieb Ulf Zibis:
Hi,
I have concatenated 2 mkv videos, both with video and audio stream. In the
resulting mkv video in the 2n part, there is no audio anymore.
I now have found out the reason.
The first video had an aac audio stream and the 2nd a libvorbis audio
Am 11.10.23 um 10:38 schrieb Adrian Szatmari:
So I took a video and cut it two ways, one with reencoding and one
without reencoding, call them R and C (cut). Im trying to do
concatenation without reencoding, and I'm able to concat the video in
all orders , , , , but the sound disappears
for an
Hi,
by accident I transcoded a video with -preset veryfast (it took 1 h).
So I had to run it again with -preset veryslow (it took 12 h).
Now I'm wondering about the file sizes. How can that be?
$ ls -l König_it*
-rwxrwxrwx 1 ich ich 1058092584 Okt 13 02:16 König_it_veryfast.mkv
-rwxrwxrwx 1 ich
Am 15.10.23 um 15:43 schrieb Reindl Harald:
Am 15.10.23 um 15:12 schrieb Ulf Zibis:
by accident I transcoded a video with -preset veryfast (it took 1 h).
So I had to run it again with -preset veryslow (it took 12 h).
Now I'm wondering about the file sizes. How can that be?
why not
Am 15.10.23 um 16:52 schrieb Reindl Harald:
Am 15.10.23 um 16:43 schrieb Ulf Zibis:
Am 15.10.23 um 15:43 schrieb Reindl Harald:
if you prefer fast you don't care about quality
in doubt quality needs space and find a compromise between size and space - you
can't have both
Am 15.10.23 um 17:51 schrieb Reindl Harald:
Am 15.10.23 um 17:20 schrieb Ulf Zibis:
With "veryfast" I stated to "not care about *space*", but with "-crf 23" I always stated
"care about same quality".
you statet "i don't care about
Hi,
is there a tutorial on how to add additional audio streams to mkv file?
I didn't find any information in ffmpeg documentation and wiki.
Thanks,
-Ulf
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Hi,
is there a tutorial on how to add title and chapters to mkv file?
I didn't find any information in ffmpeg documentation and wiki.
Thanks,
-Ulf
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Am 16.10.23 um 08:28 schrieb Reindl Harald:
so the input was always the same - jesus christ
So ok, you didn't see this because of the exhaustive cutting and concatenation, which was
identical in all 3 cases.. My guess was, that this maybe irritates the correct processing
of the codec. I.e.
Am 12.10.23 um 11:51 schrieb Cecil Westerhof via ffmpeg-user:
I just found this:
https://trac.ffmpeg.org/wiki/Capture/Desktop
Very interesting indeed.
I have two monitors. I could write something about how to use this
with two monitors (or more). Would that be appreciated? If yes, how to
Am 16.10.23 um 13:50 schrieb Cecil Westerhof via ffmpeg-user:
I have started with creating YouTube videos. A lot to learn. I want to
use ffmpeg to help me and it does. :-D
But there are a lot of things I do not know at the moment.
For example: if I have a video where I want to change for a shor
Am 16.10.23 um 01:12 schrieb Ulf Zibis:
Hi,
is there a tutorial on how to add additional audio streams to mkv file?
Now I found a solution with "-map". It's more simple as I thought:
ffmpeg -i INPUT_de.mkv -i INPUT_en.mkv -map 0 -map 1:a -c copy -metadata:s:a:0
language=de
Am 18.10.23 um 22:45 schrieb Leo Butler via ffmpeg-user:
The answer is not specific to any particular container.
The easiest way, in my opinion, is to write an ffmetadata file with
the information.
The syntax is described here:
https://ffmpeg.org/ffmpeg-all.html#Metadata
The example at the b
Hi,
above message is 2 times in the output (in yellow). What does that mean?
Also there is in yellow:
[mp4 @ 0x55a76f8cf3c0] track 1: codec frame size is not set
[mp4 @ 0x55a76f8cf3c0] track 2: codec frame size is not set
In the following ffprobe output, there is an additional subtitle stream w
Hi,
in my last post "Codec 0x21000 is not in the full list."
you can see, that also the included metadata is mostly missing in the output of
ffprobe. Why?
When I use the same command and the same metadata file for mkv output, beside
this message all is fine:
$ ffmpeg -i König_de.meta -t 3:0
Am 20.10.23 um 20:14 schrieb Paul B Mahol:
On Fri, Oct 20, 2023 at 7:19 PM Ulf Zibis wrote:
Hi,
in my last post "Codec 0x21000 is not in the full list."
you can see, that also the included metadata is mostly missing in the
output of ffprobe. Why?
When I use the same command an
Am 20.10.23 um 23:37 schrieb Greg Oliver:
On Fri, Oct 20, 2023 at 3:57 PM Ulf Zibis wrote:
On Fri, Oct 20, 2023 at 7:19 PM Ulf Zibis wrote:
Hi,
in my last post "Codec 0x21000 is not in the full list."
you can see, that also the included metadata is mostly missing in the
output
Hi,
I have a Matroska video with libx264 video and libvorbis audio. when I copy it to MP4
container, the resulting video does not play audio on Android 8 phone ->
"Audio-Codec not supported"
Matroska: http://jugkoeln.de/Projects/ffmpeg/K%C3%B6nig_de_3.mkv
MP4: http://jugkoeln.de/Projects/ffmp
Am 24.10.23 um 08:12 schrieb Ferdi Scholten:
Hi,
Vorbis audio is officially not supported by the mp4 container specifications.
Matroska does not have this problem as it supports almost all known codecs.
These are the audio codecs that are in the mp4 specifications: AAC, ALS, SLS,
MP3, MP2, MP
Am 25.10.23 um 06:50 schrieb Classic SSG Enjoyer:
Use Opus. Opus delievers better audio quality than AAC/Vorbis
On Tue, 24 Oct, 2023, 11:01 pm Ferdi Scholten, wrote:
Hi,
Vorbis audio is officially not supported by the mp4 container
specifications.
Matroska does not have this problem as it
Hi,
so 18.3 % of the frames were dropped and duplicated at same time.
Does that mean, that 8063 frames of the input were dropped and then same (or
other) 8064 frames were duplicated to the output?
What is the sense of this?
Maybe the original didn't have the exact framerate of 25 fps ?
Would
Am 29.10.23 um 16:00 schrieb Paul B Mahol:
On Sun, Oct 29, 2023 at 3:29 PM Ulf Zibis wrote:
Hi,
so 18.3 % of the frames were dropped and duplicated at same time.
Does that mean, that 8063 frames of the input were dropped and then same
(or other) 8064 frames were duplicated to the output
Am 29.10.23 um 17:04 schrieb Paul B Mahol:
On Sun, Oct 29, 2023 at 4:52 PM Ulf Zibis wrote:
Am 29.10.23 um 16:00 schrieb Paul B Mahol:
On Sun, Oct 29, 2023 at 3:29 PM Ulf Zibis wrote:
Hi,
so 18.3 % of the frames were dropped and duplicated at same time.
Does that mean, that 8063 frames
Am 29.10.23 um 18:53 schrieb Paul B Mahol:
On Sun, Oct 29, 2023 at 6:08 PM Ulf Zibis wrote:
Am 29.10.23 um 17:04 schrieb Paul B Mahol:
https://ffmpeg.org/ffmpeg-filters.html#toc-vfrdet
At end it will output number of frames detected as having variable delta
pts, and ones with constant
Hi,
when I use
ffprobe -show_frames INPUT
I get all frames.
But I only want some frames e.g. the first 10 or frame 100 to 109.
-Ulf
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Am 29.10.23 um 22:06 schrieb Torsten Kaiser:
On 29.10.23 20:28, Ulf Zibis wrote:
Hi,
when I use
ffprobe -show_frames INPUT
I get all frames.
But I only want some frames e.g. the first 10 or frame 100 to 109.
ffprobe doesn't seem to provide anything like -ss -t or -frames. So I assu
Am 27.03.20 um 04:06 schrieb Ted Park:
Hi,
for video: -vf setpts=0.5*PTS
for audio: -af atempo=2
Actually, he wanted to slow down the video so you probably meant the reciprocal
of this, 2*PTS and atempo 1/2
Thanks alot, this works fine.
Now I want to tweak a little bit more. I want to sl
Am 27.03.20 um 04:06 schrieb Ted Park:
Hi,
for video: -vf setpts=0.5*PTS
for audio: -af atempo=2
Actually, he wanted to slow down the video so you probably meant the reciprocal
of this, 2*PTS and atempo 1/2
Thanks alot, this works fine.
Now I want to tweak a little bit more. I want to sl
Just test if I get email from the list, as since 21.04.20, 16:54 CEST I didn't
receive any emails.
-Ulf
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ffm
Just test if I get email from the list, as since 21.04.20, 16:54 CEST I didn't
receive any emails.
-Ulf
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ff
Am 04.05.2020 um 12:56 schrieb Michael Koch:
Am 04.05.2020 um 11:00 schrieb Ulf Zibis:
>//>/Am 27.03.20 um 04:06 schrieb Ted Park: />>/Hi, />>//>>>/for video: -vf setpts=0.5*PTS />>>/for audio: -af atempo=2
/>>//>>/Actually, he wanted
Am 05.05.20 um 13:25 schrieb Michael Koch:
Am 05.05.2020 um 13:21 schrieb Ulf Zibis:
Am 04.05.2020 um 12:56 schrieb Michael Koch:
Am 04.05.2020 um 11:00 schrieb Ulf Zibis:
>//>/Am 27.03.20 um 04:06 schrieb Ted Park: />>/Hi, />>//>>>/for video: -vf setpts=0.5*PTS /
Am 05.05.20 um 15:07 schrieb Edward Park:
Hi,
But I'm lost how use it correctly. I want to slow down the video by 1.4 and
then increase the audio frequency (pitch) by 1.25.
So if you slow the video down by 1.4, You are also slowing down the audio by
the same amount right? I think 1/1.4, an
Am 05.05.20 um 20:14 schrieb Michael Koch:
Am 05.05.2020 um 18:27 schrieb Ulf Zibis:
Aside I have a question: Where can I find a list of properties, which can be used as parameter in
commands. E.g. I can use "PTS" for current picture time stamp and "h" for the
hei
Hi,
I get this result here:
$ ffmpeg -ss 03:00 -t 01:30:50 -i in.mp3 -t 00:30:00 -f lavfi -i
life=s=320x240:mold=10:r=30:ratio=0.1:death_color=#C83232:life_color=#00ff00
-af
volume='not(between(t,46:50,48:50))',volume='not(between(t,1:30:00,1:31:00))',atempo=1/1.1/1.3,aresample=48000/1.1,asetr
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