Dear All,
The issue I am facing is the following. When I perform this command to stream
through udp an .mpeg file and also a determined duration of the video:
ffmpeg -re -ss 00:00:00.000 -t 00:00:08.000 -i klv.mpeg -map 0 -vcodec h264
-pix_fmt yuv420p -f mpegts udp://127.0.0.1:9000?pkt_size=
Dear all,
My video which has KLV metadata on stream 1, is not timestamped properly, when
streaming udp. ¿Is there anyway to recreate the timestamps? I am doing
something wrong when streaming by udp.
The command employed is the following:
>>ffmpeg -re -i klv.mpeg -map 0 -codec copy -f mpegts
>
Dear all,
I have a video with two streams, a video stream and a metadata stream, I would
like to set the vsync option to set the time stamps according to the video
stream.
In the documentation ffmpeg of vsync says that:
-vsync parameter
Video sync method. For compatibility reasons old valu
Dear all,
Is posible to specify bitrate option -b:v as the bitrate from the input?
instead of doing -b:v 300k is posible for example -b:v source, which would
output the bitrate from original video?
Aa lot of thanks.
P Please consider the environment before printing this e-mail.
_
??
De: ffmpeg-user en nombre de Carl Eugen Hoyos
Enviado: jueves, 8 de abril de 2021 12:47:25
Para: FFmpeg user questions
Asunto: Re: [FFmpeg-user] -b:v option
> Am 08.04.2021 um 12:45 schrieb Mar Andrés López :
>
> Is posible to specify bitrate option -b:v as the bit
Dear All,
I am using the following FFmpeg command for dash generation,
ffmpeg -i video.mpeg -preset superfast -r 30 -vcodec libx264 -acodec aac -b:a
128k -ac 1 -ar 44100 -map v:0 -b:v:0 150 -s:v:0 768x432 -map v:0 -b:v:1
75 -s:v:1 640x360 -map v:0 -b:v:2 50 -s:v:2 512x288 -map 0:a
Then, is possible to make an audio adaptation set optional?
De: Mar Andrés López
Enviado: jueves, 15 de julio de 2021 15:51:49
Para: ffmpeg-user@ffmpeg.org
Asunto: FFmpeg DASH Optional Adaptation Set
Dear All,
I am using the following FFmpeg command for dash
The version I am using is 4.3.1
De: ffmpeg-user en nombre de Dennis Mungai
Enviado: jueves, 15 de julio de 2021 16:30:21
Para: FFmpeg user questions
Asunto: Re: [FFmpeg-user] FFmpeg DASH Optional Adaptation Set
On Thu, 15 Jul 2021 at 16:52, Mar Andrés López
Dear all,
I am having so many issues trying to clip a video with KLV. When I edit a video
with KLV I lose the KLV.
I have read about -map 0 option, from my understading it copies all the streams
of a video from the input 0.
The command I have tried and it is not working is the following:
25 tbr, 90k tbn,
50 tbc
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 1130496 vbv_delay: N/A
Stream #0:1[0x101]: Data: klv (KLVA / 0x41564C4B)
________
De: Mar Andrés López
Enviado: miércoles, 23 de septiembre de 2020 11:11:24
Para: ffmpeg-user@f
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
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
Dear All,
I am new in ffmpeg, I was Reading the documentation that ffmpeg has available
for dash. The given command example is the following:
ffmpeg -re -i -map 0 -map 0 -c:a libfdk_aac -c:v libx264 \
-b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline \
-profile:v:0 main -bf 1 -keyi
On Tue, Oct 6, 2020 at 8:25 AM Mar Andrés López
wrote:
> Dear All,
>
>
> I am new in ffmpeg, I was Reading the documentation that ffmpeg has
> available for dash. The given command example is the following:
>
>
> ffmpeg -re -i -map 0 -map 0 -c:a libfdk_aac -c:v libx264 \
&
De: ffmpeg-user en nombre de andrei ka
Enviado: martes, 6 de octubre de 2020 10:09:35
Para: FFmpeg user questions
Asunto: Re: [FFmpeg-user] Streaming DASH with ffmpeg
On Tue, Oct 6, 2020 at 8:25 AM Mar Andrés López
wrote:
> I need to stream the video with d
Dear all,
I am trying to stream a video using the following command
ffmpeg -i video.mp4 -map 0 -codec copy -f mpegts udp://127.0.0.1:12000, then I
place VLC listening and the video is not reproduced. ¿Is there any help?
P Please consider the environment before printing this e-mail.
__
The problem is not related with multicast. Multicast is for deliver a stream to
several devices, and I want test the streaming in my own computer, that is why
I am using 127.0.0.1 because it references to my own computer (the localhost
ip).
It seemed that I needed a buffer in reception.
I tried
Dear all,
I am using the following command to generate dash content from a file:
ffmpeg -i video.mp4 –r 25 -c:v libx264 -c:a aac -b:a 128k -ac 1 -ar 44100 -map
v:0 -b:v:0 2M -map v:0 -b:v:1 145k -map v:0 -b:v:2 365k -map 0:a -f dash
dash.mpd
But sometimes I have streams with audio and somet
Dear all,
I am trying to generate dash content with klv metadata, I tried several
combinations for that, the last one it seems to have more sense to me is:
ffmpeg -i videompeg -r 25 -c:v libx264 -c:a aac -b:a 128k -ac 1 -ar 44100 -b:d
2M -map v:0 -b:v:0 2M -map v:0 -b:v:1 145k -map v:0 -b:v:2
Dear all,
ffmpeg –i udp://127.0.0.1:12007 –r 25 -c:v libx264 -c:a aac -b:a 128k -ac 1 -ar
44100 –b:d 2M -map v:0 -b:v:0 2M -map v:0 -b:v:1 145k -map v:0 -b:v:2 365k -map
0:a? -f dash dash.mpd
1. First I start streaming my video with UDP and ffmpeg.
2. Then I start to generate dash cont
Dear All,
I would like to extract the first frame of a video that contains some
'information', I do not want just one color frames (White,red, black…).
In order to achieve that the histogram variance calculation of an image could
be a Good starting point. I would like that the variance is low
Dear All,
Is that possible to get the bitrate from an UDP source? My issue is the same
that this one opened ticket?:
https://trac.ffmpeg.org/ticket/6470
I stream a video over udp and i try to retrieve its bitrate with ffprobe:
ffprobe -i udp://239.192.18.17:1234
but I am obtaining N/A as
Dear all,
I would like to extract the date in which my video was recorded. Now I am using
the following ffprobe command:
ffmpeg -i video.mp4 -v quiet -select_streams v:0 -show_entries
stream_tags=creation_time -of default=noprint_wrappers=1:nokey=1
Which prints the creation_time and I guess
Dear All,
I have the following video klv.mpeg, composed by two streams, a video stream
and a klv data stream. As you can see:
[mpegts @ 0146ceeaaec0] start time for stream 1 is not set in
estimate_timings_from_pts
Input #0, mpegts, from 'klv.mpeg':
Duration: 00:01:30.80, start: 0.50
Dear All,
I am building a DASH VideoPlayer and I need the functionality of viewing
thumbnails when scrolling de time bar of the video player. ¿Does FFmpeg support
this functionality of adding thumbnails to .mpd?
My question is the same as this one retrieved from
https://stackoverflow.com/que
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