Recherche avancée

Sur d’autres sites (8197)

• Choose download resolution in m3u8 list with ffmpeg

  31 mars 2024, par Bruno Andrade

  I'm trying to download video from a m3u8 playlist using ffmpeg but I do not know how to choose the resolution to download. Currently the command is downloading the highest version

  



  the command I am using is :

  



  /home/user/bin/ffmpeg -user_agent "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0" -i "https://sitevideo.com/list.m3u8" -c copy "/home/file/video.ts"


  



  My list is this

  



  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-STREAM-INF:BANDWIDTH=400000,NAME="low"
size1.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=800000,NAME="med"
size2.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1900000,NAME="best"
size3.m3u8


  


• How to set watermark resolution according to video resolution ?

  10 avril 2018, par Kiran

  Here i am trying to create a video editor with top and bottom text.I can set 2 text on top and bottom with different size, color and fonts for that text and i am converting that text to image and adding as watermark.

  But when resolution of video decreases the size of watermark image increase and vise versa.I am using ffmpeg commands.Now i am calculating like as shown below.

    if (video_width <= 300) {
  
  
  
                  Log.e("less than", "300");
  
                  water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width / 2 + 30) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height / 2 + 15));
  
  
  
                  water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width / 2 + 30) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height / 2 + 15));
  
  
  
              } else if (video_width > 300 && video_width <= 400) {
  
  
  
                  Log.e("less than", "400");
  
                  water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width / 2 + 130) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height / 2 + 70));
  
  
  
                  water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width / 2 + 130) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height / 2 + 70));
  
  
  
              } else if (video_width > 400 && video_width <= 600) {
  
                  Log.e("btw ", "400 and 600");
  
                  water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width + 80) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height + 40));
  
  
  
                  water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width + 80) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height + 40));
  
              } else if (video_width > 600 && video_width <= 1000) {
  
                  Log.e("btw ", "600 and 1000");
  
                  water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width + 100) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height + 100));
  
  
  
                  water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width + 100) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height + 100));
  
  
  
              } else if (video_width > 1000) {
  
                  Log.e("grthr than ", "1000");
  
                  water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width * 2 + 20) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height * 2 + 20));
  
                  water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width * 2 + 20) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height * 2 + 20));
  
  
  
              }

  This will not give accurate results.Can anyone suggest any other calculation methods.I have also tried with "drawtext" method .It also have same issue.

• ffmpeg reverse video resolution after compression

  30 août 2018, par Mehran

  I’m trying to compress a video to mp4 format with ffmpeg.

  With scale filter :

  cmd = "-i, "+in+" -vf scale=480:-2,setsar=1:1, "+out;

  Or as simple as this :

  cmd = "-i, "+in+" "+out;

  If I try this command, the outPut will be fine in many players like potPlayer(win) or mxPlayer(android), But in some players like kmPlayer.v3(win) it’s stretched. with or without scale filter.

  I tried the same video compression with Handbrake so I find out there is nothing wrong with my player.

  The result is the same with all videos that I compressed with ffmpeg library

  And there is another problem which is more annoying, the outPut video resolution gets reversed. for Example :

  Input : w1280 h720

  Output : w720 h1280

  I googled a lot but I found nothing.