How to set the segment size and fragment size properly. I have played around
with the settings but can't seem to achieve what i require
ffmpeg -re -i "XXX.mxf" -pix_fmt yuv420p -vsync 1 -map 0:v:0 -map 0:a:0 -c:a
aac -c:v libx264 -use_template 1 -use_timeline 1 -init_seg_name
"init-stream$Repr
Dear all,
When I process my video with ffmpeg and I set the format to mpegts, ¿why It
changes the duration of my video from 00:00:04.56 to 00:00:04.00?
ffmpeg -i video.mpg -map 0 -f mpegts out.mpg
ffmpeg output for video.mpg: Duration: 00:00:04.56, start: 6916.00,
bitrate: 4617 kb/s
On Wed, Sep 23, 2020 at 03:30:25PM +0200, Marco Mircoli wrote:
> Thanks Motitz,
>this is a one pass norm.
> Is there a way to implement 2 pass?
Yes there is a way, you can search google among other things.
First run loudnorm to get report of loudness values, after that
use that reported value
On Wed, Sep 23, 2020 at 11:31:43PM +0200, Peter B. wrote:
> Hi Ted,
>
> On 11.09.20 14:03, Ted Park wrote:
> > > > My problem is, that I have literally hundreds (actually more than
> > > > 1000+) of
> > > > these H.264/yuvj420p files that are to be auto-converted to archival
> > > > FFV1,
> > >
Dear all,
I want to set the same timestamps in my video.mpg which has a video stream and
a klv data stream, when I perform this command:
ffmpeg -vsync drop -i video.mpg -map 0 -codec copy -f mpegts output.mpg
[mpegts @ 01ee5461df40] Timestamps are unset in a packet for stream 1. This
is
How do I change the colour actually used as the chromakey colour?
I am creating remap filters to do various image mappings and would
like undefined pixels to be black rather than green.
Apologies in advance if I simply didn't search the documentation
sufficiently well.
_
Am 24.09.2020 um 13:50 schrieb Paul Bourke:
How do I change the colour actually used as the chromakey colour?
I am creating remap filters to do various image mappings and would
like undefined pixels to be black rather than green.
Apologies in advance if I simply didn't search the documentation
su
On Thu, Sep 24, 2020 at 07:50:32PM +0800, Paul Bourke wrote:
> How do I change the colour actually used as the chromakey colour?
> I am creating remap filters to do various image mappings and would
> like undefined pixels to be black rather than green.
If you switch to last ffmpeg version, there i
Hmmm
ffmpeg -i Ajanta_cave26b.jpg -i x.pgm -i y.pgm -lavfi remap=fill=green a.png
I get
[Parsed_remap_0 @ 0x7fd6cac05200] Option 'fill' not found
[AVFilterGraph @ 0x7fd6cae1c5c0] Error initializing filter 'remap'
with args 'fill=green'
Error initializing complex filters.
Option not found
ffmpeg
Am 24.09.2020 um 14:30 schrieb Paul Bourke:
Hmmm
ffmpeg -i Ajanta_cave26b.jpg -i x.pgm -i y.pgm -lavfi remap=fill=green a.png
I get
[Parsed_remap_0 @ 0x7fd6cac05200] Option 'fill' not found
[AVFilterGraph @ 0x7fd6cae1c5c0] Error initializing filter 'remap'
with args 'fill=green'
Error initiali
Figured as much, installed 4.3.1 ... works a treat, thanks!
I sent you an image but was too large and got blocked.
On Thu, Sep 24, 2020 at 8:33 PM Michael Koch
wrote:
>
> Am 24.09.2020 um 14:30 schrieb Paul Bourke:
> > Hmmm
> >
> > ffmpeg -i Ajanta_cave26b.jpg -i x.pgm -i y.pgm -lavfi remap=fill
> Also, I really dunno why people keep using remap filter with its only
> available neighbour pixel interpolator.
Yeah, not ideal.
I don't use it for images, I have my own solution for that with
supersampling antialising.
But for movie conversion, what is the alternative? I on occasion
- Extract
Am 24.09.2020 um 14:52 schrieb Paul Bourke:
Also, I really dunno why people keep using remap filter with its only
available neighbour pixel interpolator.
Yeah, not ideal.
I don't use it for images, I have my own solution for that with
supersampling antialising.
But for movie conversion, what is
On Thu, Sep 24, 2020 at 08:52:44PM +0800, Paul Bourke wrote:
> > Also, I really dunno why people keep using remap filter with its only
> > available neighbour pixel interpolator.
>
> Yeah, not ideal.
>
> I don't use it for images, I have my own solution for that with
> supersampling antialising.
> Nice idea, what upscaling methods you use? Do you use swscale by any chance?
Not sure I understand. I don't upscale the movie/image, rather my code
that creates the remap filters just creates the maps 2,3,4 times
bigger than I eventually plan to use.
> And what filters for upscaling and later d
The unfolded icosahedron is obviously not one of the options yet.
Maybe some demand for it in the future, becoming increasingly popular
in the machine learning game.
On Thu, Sep 24, 2020 at 9:05 PM Michael Koch
wrote:
>
> Am 24.09.2020 um 14:52 schrieb Paul Bourke:
> >> Also, I really dunno why p
Well, I just tried that command you suggested, but it still skipped whenever it
fetched a new TS. And it couldn’t be my connection speed as I have more than a
Gbps internet speed. But this tells me that it must be the software versions,
since you didn’t have any issues. I’ll update the software
Hello everyone,
I'm working to have UDP live streams sent to Android setopboxes, it has to
be 720p CBR 5Mbps @25fps HEVC. Source is UDP 1080p UDP H264. I've tried
several settings but none of them seems to work, video starts to play then
stops.
My server runs os Ubuntu 18.04 Server Edition and it
On 9/23/20 10:42 PM, Carl Eugen Hoyos wrote:
Am Mi., 23. Sept. 2020 um 17:24 Uhr schrieb Thomas Seilund via
ffmpeg-user :
Now I write to udp and not to a local file with this command:
raspivid -t 0 -b 1000 -n -o udp://239.255.42.42:5004
Connecting to 239.255.42.42:5004...connected, sendin
Hello Mar,
I took a look at the sample you sent me privately, and it looks like
the KLV data is present in the output file (using the command line you
specified in your original email).
Could you run the following and provide the output:
ffprobe -show_packets out.mpg |grep stream_index=1|wc
(wh
Hello
I am looking for ways to improve VP8 encoding performance. I work with 5
mn long, 5 MB large MPEG4 test video. Here is the codec information from
ffprobe
Duration: 00:05:08.20, start: 0.00, bitrate: 150 kb/s
Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz,
mono, fl
On 9/24/2020 12:41 AM, Mar Andrés López wrote:
When I process my video with ffmpeg and I set the format to mpegts, ¿why
It changes the duration of my video from 00:00:04.56 to 00:00:04.00?
Please include the complete command line and output when asking a question.
If you're not using a really
On 9/24/2020 6:29 AM, Firas Shahin via ffmpeg-user wrote:
But this tells me that it must be the software versions, since you didn’t have
any issues.
Always try with the current ffmpeg (and please do not top-post replies).
Later,
z!
___
ffmpeg-user
On 09/24/2020 09:21 AM, Paul Bourke wrote:
Nice idea, what upscaling methods you use? Do you use swscale by any chance?
Not sure I understand. I don't upscale the movie/image, rather my code
that creates the remap filters just creates the maps 2,3,4 times
bigger than I eventually plan to use.
Am Do., 24. Sept. 2020 um 17:13 Uhr schrieb Emmanuel Dreyfus :
>
> Hello
>
> I am looking for ways to improve VP8 encoding performance. I work with 5
> mn long, 5 MB large MPEG4 test video. Here is the codec information from
> ffprobe
>
> Duration: 00:05:08.20, start: 0.00, bitrate: 150 kb/s
Am Do., 24. Sept. 2020 um 11:42 Uhr schrieb Mar Andrés López
:
> I want to set the same timestamps in my video.mpg which has a video
> stream and a klv data stream, when I perform this command:
>
> ffmpeg -vsync drop -i video.mpg -map 0 -codec copy -f mpegts output.mpg
Complete, uncut console out
Am Do., 24. Sept. 2020 um 16:18 Uhr schrieb Thomas Seilund via
ffmpeg-user :
>
>
> On 9/23/20 10:42 PM, Carl Eugen Hoyos wrote:
> > Am Mi., 23. Sept. 2020 um 17:24 Uhr schrieb Thomas Seilund via
> > ffmpeg-user :
> >
> >> Now I write to udp and not to a local file with this command:
> >>
> >> raspi
Thank you!
Il giorno gio 24 set 2020 alle ore 09:54 Paul B Mahol ha
scritto:
> On Wed, Sep 23, 2020 at 03:30:25PM +0200, Marco Mircoli wrote:
> > Thanks Motitz,
> >this is a one pass norm.
> > Is there a way to implement 2 pass?
>
> Yes there is a way, you can search google among other thin
> >> Nice idea, what upscaling methods you use? Do you use swscale by any
> >> chance?
> > Not sure I understand. I don't upscale the movie/image, rather my code
> > that creates the remap filters just creates the maps 2,3,4 times
> > bigger than I eventually plan to use.
> Hi, Paul. Can you tell
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