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    Puis-je poster des contenus à partir d’une tablette Ipad ?
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Sur d’autres sites (6955)

  • Combine many videos in list using FFMPEG

    2 septembre 2022, par anoor1234

    I have a bunch of videos that are MP4s with different FPS, resolution, aspect ratio, basically everything. I'm trying to see if its possible to use FFMPEG to combine them into a single 1080/720 video using a single command, or at least make them all similar format so that combining is easy. Speed and less CPU power would be preferred but I'm in no rush and

    


    I found this command on another stack overflow question :

    


    ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -filter_complex \
"[0:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1,setsar=1,fps=30,format=yuv420p[v0];
 [1:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1,setsar=1,fps=30,format=yuv420p[v1];
 [2:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1,setsar=1,fps=30,format=yuv420p[v2];
 [v0][0:a][v1][1:a][v2][2:a]concat=n=3:v=1:a=1[v][a]" \
-map "[v]" -map "[a]" -c:v libx264 -c:a aac -movflags +faststart output.mp4


    


    The problem is that I have more that 3 videos to combine and I don't know how to work this command with more, I have an entire list of videos in a list.txt file structured as such :

    


    file './videos/video1.mp4'
file './videos/video2.mp4'
file './videos/video3.mp4'


    


    The code that somewhat worked for me was this

    


    ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4


    


    It combines the video well and fairly fast but I get weird glitches with the audio and the resolution is weird (I'm hoping for 1920x1080). I suspect this is due to the varying attributes of each video but I'm not sure. I'm familiar with Python but I have found no Python script that can do what I ask. If there any way to combine my list into one video (using FFMPEG or not) reliably ?

    


  • Arguments set but not used in GPAC

    30 avril 2022, par M faiz zeeshann

    I am trying to do the tiling of a 360-degree video with the following command.

    


    MP4Box -dash 1000 test.mp4 :"desc_as="

    


    it creates an MPD file but without tiles and gives the following errors.

    


    Arg segdur set but not used,
Arg mpeg set but not used,
Arg dash set but not used,
Arg srd set but not used,
Arg 2014 set but not used,

    


  • rtmp module stream do not , how to solve that ?

    24 avril 2019, par Duxo

    I have some problem with configuring nginx+rtk-©module.
    I need to stream a video from IP camera to web-site. I use MPEG-DASH.My server configuration is lower. Files .m4a, .m4v are creating and I also have stream.mpd file. But in browser it doen’t work, inifinity loading. some logs from dash.js

    Time: 0
    dash.all.js:2:10794
    Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    dash.all.js:2:10818
    Index for time 0 is -1
    dash.all.js:3:8722
    Checking for stream end...
    dash.all.js:3:8722
    Live never ends! (TODO)
    dash.all.js:3:8722
    Stream finished? false
    dash.all.js:3:8722
    Got a request.
    dash.all.js:3:8722
    null
    dash.all.js:3:8722
    BufferController video setState to:READY
    dash.all.js:3:8722
    Working time is video time: 0
    dash.all.js:3:8722
    BufferController.validate() video | state: READY
    dash.all.js:3:8722
    video Playback rate: 0
    dash.all.js:3:8722
    video Working time: 0
    dash.all.js:3:8722
    video Video time: 0
    dash.all.js:3:8722
    Current video buffer length: 0
    dash.all.js:3:8722
    BufferController video setState to:VALIDATING
    dash.all.js:3:8722
    ABR enabled? (true)
    dash.all.js:3:8722
    Check ABR rules.
    dash.all.js:3:8722
    Checking download ratio rule...
    dash.all.js:3:8722
    Total time: 0.009s
    dash.all.js:3:8722
    Download time: 0.009s
    dash.all.js:3:8722
    The ratios are NaN, bailing.
    dash.all.js:3:8722
    Checking insufficient buffer rule...
    dash.all.js:3:8722
    Not enough information for rule.
    dash.all.js:3:8722
    Array [ {…}, {…} ]
    dash.all.js:3:8722
    New quality of 0
    dash.all.js:3:8722
    video Playback quality: 0
    dash.all.js:3:8722
    Populate video buffers.
    dash.all.js:3:8722
    Quality didn't change.
    dash.all.js:3:8722
    Loading the video fragment for time: 0
    dash.all.js:3:8722
    Getting the request for time: 0
    dash.all.js:3:8722
    Got segments.
    dash.all.js:3:8722
    Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    dash.all.js:3:8722
    Got a list of segments, so dig deeper.
    dash.all.js:3:8722
    Couldn't figure out a time!
    dash.all.js:2:10751
    Time: 0
    dash.all.js:2:10794
    Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    dash.all.js:2:10818
    Index for time 0 is -1
    dash.all.js:3:8722
    Checking for stream end...
    dash.all.js:3:8722
    Live never ends! (TODO)
    dash.all.js:3:8722
    Stream finished? false
    dash.all.js:3:8722
    Got a request.
    dash.all.js:3:8722
    null
    dash.all.js:3:8722
    BufferController video setState to:READY
    dash.all.js:3:8722
    Working time is video time: 0
    dash.all.js:3:8722
    BufferController.validate() video | state: READY
    dash.all.js:3:8722
    video Playback rate: 0
    dash.all.js:3:8722
    video Working time: 0
    dash.all.js:3:8722
    video Video time: 0
    dash.all.js:3:8722
    Current video buffer length: 0
    dash.all.js:3:8722
    BufferController video setState to:VALIDATING
    dash.all.js:3:8722
    ABR enabled? (true)
    dash.all.js:3:8722
    Check ABR rules.
    dash.all.js:3:8722
    Checking download ratio rule...
    dash.all.js:3:8722
    Total time: 0.009s
    dash.all.js:3:8722
    Download time: 0.009s
    dash.all.js:3:8722
    The ratios are NaN, bailing.
    user some_user;
    worker_processes  1;

    events {
       worker_connections  1024;
    }

    rtmp {
       live on;
       dash on;
       server {
           listen 1935;
           application cams {
           dash_path /cams;
       }
           exec_static ffmpeg -i
    rtsp://admin:admin@192.168.0.51/1/Streaming/Channels/1/ -c:v libx264 -q:v 31 -an -profile:v baseline -ar 44100
    -f flv rtmp://0.0.0.0/cams/stream;

       }
    }

    http {
       include       mime.types;
       default_type  application/octet-stream;

       sendfile        on;

       #keepalive_timeout  0;
       keepalive_timeout  65;


       server {
           listen       80;
           server_name  localhost;

           location / {
               root /;
           }

           error_page   500 502 503 504  /50x.html;
           location = /50x.html {
               root   html;
           }

    }

    Can someone explain me why stream is not working and how to issue that ?thanks