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• swscale : disable ARM code until its build failure with clang/iphone is fixed

  8 janvier 2014, par Michael Niedermayer

  swscale : disable ARM code until its build failure with clang/iphone is fixed
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libswscale/arm/Makefile
  • [DH] libswscale/swscale_unscaled.c

• How to Bulk Speed UP and Crop Videos FFMPEG

  6 septembre 2023, par Usemo Shank

  I have videos in (input) folder that is located on the root of the script, I also have output folder on the root, The input folder has several videos that i want to speed up in bulk by 1.1 percent, I also want to cropt the videos by 90 percent (Meaning 90 Percent of original video is visible).

  


  I have a code that does not function well. Here is the code I have

  


   import os
import subprocess

# Define input and output directories
input_folder = "input"
output_folder = "output"

# Create the output directory if it doesn't exist
if not os.path.exists(output_folder):
    os.makedirs(output_folder)

# List all video files in the input directory
input_files = [f for f in os.listdir(input_folder) if f.endswith(('.mp4', '.avi', '.mkv'))]

# Speed up and crop each video
for input_file in input_files:
    input_path = os.path.join(input_folder, input_file)
    output_file = os.path.splitext(input_file)[0] + "_speed_crop.mp4"
    output_path = os.path.join(output_folder, output_file)

    # FFmpeg command to speed up video by 1.1x and crop to 90%
    ffmpeg_command = [
        "ffmpeg",
        "-i", input_path,
        "-vf", "setpts=1.1*PTS,crop=in_w*0.9:in_h*0.9",
        "-c:v", "libx264",
        "-crf", "20",
        "-c:a", "aac",
        "-strict", "experimental",
        output_path
    ]

    # Run FFmpeg command
    subprocess.run(ffmpeg_command)

print("Conversion complete.")


  


• mpeg-dash live streaming can't fetch chunks

  27 juin 2020, par user1902653

  I'm trying to create a live stream of mpeg-dash with ffmpeg.

  


  I'm streaming with python the frames to the ffmpeg process.

  


  This is the current command I'm using for creating the mpeg-dash manifest and m4s files :

  


  ffmpeg -re -f rawvideo -pix_fmt bgr24 -video_size 640x360 -i - -vcodec libx264 -preset ultrafast -tune zerolatency -f dash -window_size 10 -use_template 1 -use_timeline 0 -live 1 /srv/http/dash/stream.mpd


  


  I'm using nginx as a server for now and I've created a simple index.html using shaka player, but the problem is I couldn't get it to load and play more then the first chunk. (checked with dev-tools in chrome in the network tab)

  


  This is how I'm using shaka player right now :

  


  


  


  &#xA;    &#xA;        <code class="echappe-js">&lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/shaka-player/2.1.4/shaka-player.compiled.js&quot;&gt;&lt;/script&gt;&#xA;        &lt;script&gt;&amp;#xA;            var manifestUri = &amp;#x27;stream.mpd&amp;#x27;;&amp;#xA;            function initApp() {&amp;#xA;                shaka.polyfill.installAll();&amp;#xA;                if (shaka.Player.isBrowserSupported()) {&amp;#xA;                    initPlayer();&amp;#xA;                } else {&amp;#xA;                    console.error(&amp;#x27;Browser not supported!&amp;#x27;);&amp;#xA;                }&amp;#xA;            }&amp;#xA;            function initPlayer() {&amp;#xA;                var video = document.getElementById(&amp;#x27;video&amp;#x27;);&amp;#xA;                var player = new shaka.Player(video);&amp;#xA;                window.player = player;&amp;#xA;                player.addEventListener(&amp;#x27;error&amp;#x27;, onErrorEvent);&amp;#xA;                player.load(manifestUri).then(function() {&amp;#xA;                    console.log(&amp;#x27;The video has now been loaded!&amp;#x27;);&amp;#xA;                }).catch(onError);&amp;#xA;            }&amp;#xA;            function onErrorEvent(event) {&amp;#xA;                onError(event.detail);&amp;#xA;            }&amp;#xA;            function onError(error) {&amp;#xA;                console.error(&amp;#x27;Error code&amp;#x27;, error.code, &amp;#x27;object&amp;#x27;, error);&amp;#xA;            }&amp;#xA;            document.addEventListener(&amp;#x27;DOMContentLoaded&amp;#x27;, initApp);&amp;#xA;        &lt;/script&gt;&#xA;    &#xA;    &#xA;        &#xA;    &#xA;

  


  


  



  For some reason the stream is only playing the first chunk and never requesting for the next chunk. How can I make it load the next chunks ?

  


  When tried using dash.js I couldn't get it to load even the first chunk.

  


  Thanks in advance.