08:03
I have a video stream send with FFmpeg to a other computer on my local network.
At the receiver computer I want to split the video stream in multiple parts and play them at the receiver computer. How can I do that?
Example:
Stream send form sender to receiver is 1000x1000 pixels.
At the receiver split the 1000x1000 pixel stream into four parts of 500x500 pixels, and play them all four on the receiver in a separate player.
I have tryed it with a multicast stream to the receiver, and played it four times with FFplay, but that was not working correct.
I also hve (...)
10:11
Using FFMPEG for encoding videos from HDR to SDR with 3DLuts, i recently came to my attention that after the encoding the video has wrong information.
The code i use is:
-vf lut3d="example.cube" -c:v libx265 -crf 16 -c:a copy -preset fast
Original HDR video infos:
General
Unique ID : 235922119201670445249046242281848857470 (0xB17CF2883DCE2BDE00E192235198637E)
Complete name : example.mkv
Format : Matroska
Format version : Version 4
File size : 201 MiB
Duration : 20 s 96 ms
Overall bit rate mode : Variable
Overall bit rate : 83.8 (...)
21:04
I'm trying to concat 4 mp4 files. I'm using the command below but not able to concat
ffmpeg -i new1.mp4 -i new2.mp4 -i new3.mp4 -i new4.mp4 -filter_complex concat=n=4:v=1:a=1 output.mp4
Getting this error :
Input link in1:v0 parameters (size 640x640, SAR 16:9) do not match the corresponding output link in0:v0 parameters (640x640, SAR 427:240)
All four vides has the same codec and same size (640x640) and the same bitrate (30)
What I am doing (...)
20:56
I want to read the metadata in media files and then save that metadata in a text/xml file, so that I can later insert that data in my database. I would prefer to use ffmpeg.
Also is the same thing possible with MediaInfo?? I know I can get the metadata for individual tracks using MediaInfo, but I would want to automate it; as in whenever a new media file is found, read its metadata and then store it in a txt/xml file.
Or, is there any other tool/utility/API that I can use for (...)
19:43
I have a question about storing the output of a screen recording using FFmpeg.
Currently, I want to use the:
ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0 output.mp4
command to grab a screen recording on a remote Linux machine, where I am connecting to the Linux machine using ssh on my PC.
I was wondering, would it be possible to save output.mp4 onto my local machine after ending the screen recording instead of on the remote Linux machine? Or to a different location instead of the Linux machine in general?
I am new to Linux and using ssh, (...)
07:33
i'm new to FFmpeg, i'm trying to learn how to encode images to an mp4 using a stream.
But even tough i can generate a playable file, my file is "broken", it does does past 1sec, and if i check it's data with ffmpeg i can see that it's duration is accordly wrong with the kb/s fps value
Duration: 00:00:00.01 .... 2635232 kb/s, 15463.09 fps.
ffmpeg -i 25_5.mp4 -f ffmetadata 25_5.txt
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '25_5.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: (...)
01:53
Android Camera2 records video from multiple cameras, adds real-time timestamps to the frames captured by each camera, and finally composites the multiple videos into a single video file. does Android's native interface support these features? Do I have to user FFMPEG to handle the frames captured by each camera