Recherche avancée

Sur d’autres sites (7004)

• How can I merge two input rtp streams in ffmpeg ?

  15 décembre 2016, par Masha

  I want two merge two mp3 input rtp streams together and save them as mp3 file, with the following command :

  ffmpeg -i rtp://127.0.0.1:5004?listen -i rtp://127.0.0.1:5005?listen -filter_complex amerge -ac 2 -c 2 -c:a libmp3lame q:a 4 output.mp3

  Which returned the error bind failed : Error number -10048 occured rtp ://127.0.0.1:5005 ?listen : I/O error

  Before I tried this, I first tried to merge two mp3 file together with the following, working, command :

  ffmpeg -i input01.mp3 -i input02.mp3 -filter_complex amerge -ac 2 -c 2 -c:a libmp3lame -q:a 4 output.mp3

  I have also tried to grab each rtp stream individually and create a .wav file output. This also worked with the following command :

  ffmpeg -i rtp://127.0.0.1:5004?listen output.wav  

  With udp i can merge to streams together and create a mp3 output :

  ffmpeg -i udp://127.0.0.1:5004?listen -i udp://127.0.0.1:5005 -filter_complex amerge -ac 2 -c 2 -c:a libmp3lame -q:a 4 output.mp3

  Does anyone know how two rtp streams can be grabed, merged and written to an mp3 file in ffmpeg ? Or is this still only one rtp stream supported like in 2012 ?

• Combining multiple mp4s with python-ffmpeg wrapper

  30 août 2020, par Perchful

  So I'm working on a program that downloads multiple mp4s to a folder and then concats them together. I've run into a few problems while using the FFMPEG python wrapper. At first, I was able to combine the videos using the code, but there is no audio for some reason.

  


      filenames = []
        inputs = []



        dlnumber = 1

        #Actual downloading of mp4s

        while dlnumber <= len(user_timeline):
            subprocess.call(r'youtube-dl.exe ' + user_timeline[dlnumber-1]['url'] + ' -o' + str(os.getcwd()) + r'\DLvideo' '\\u' + str(dlnumber) + '.%(ext)s')
            subprocess.call('ffmpeg -i ' + str(os.getcwd()) + r'\DLvideo\u' + str(dlnumber) + '.mp4' + ' -r 60 -vf scale=1920:1080 -ar 44100 ' + str(os.getcwd())+ r'\DLvideo\f' + str(dlnumber) +'.mp4')


            filenames.append(str(os.getcwd())+ r'\DLvideo\f' + str(dlnumber) +'.mp4')
            os.remove(str(os.getcwd()) + r'\DLvideo\u' + str(dlnumber) + '.mp4')

            dlnumber +=1

        for filename in filenames:
            inputs.append(ffmpe.input(filename))

#FFMPEG CONCAT
        (   ffmpeg
            .concat(*inputs)
            .output('TEST.mp4')
            .run()
        )


  


  I've also heard about separating the audio and video, making changes, and then combining them together again, and while I was able to separate the audio and the video, I couldn't exactly figure out how to combine them individually, and then together again. Would love some help. Thanks.

  


• How to batch watermark a directory of videos with FFMPEG on a Mac [closed]

  13 août 2020, par analogvids

  I need to create a shell script that allows me to add a watermark (.PNG) to all of the video files in a given directory, and I need to do this on a Mac.

  


  I've successfully written and run a script to batch convert videos :

  


  for i in *.Avi; do ffmpeg -i "$i" -c:a aac -b:a 128k -c:v libx264  -preset veryslow "${i%}.mp4"; done)


  


  I have also successfully run a command to convert and watermark videos individually :

  


  ffmpeg -i test.MOV -i watermark.png -filter_complex "overlay=100:100" watermarked.mp4


  


  I combined them into the following script :

  


  # !/bin/bash

  


  for i in *.MOV ; do ffmpeg -i "$i" -i watermark.jpeg -filter_complex “overlay=0” ”$I%.mp4" ; done

  


  and this is the error message terminal spits out :
./batchwatermark10.sh : line 3 : unexpected EOF while looking for matching `"'
./batchwatermark10.sh : line 4 : syntax error : unexpected end of file

  


  This answer doesn't help, though I tried to adapt it for Mac. And this answer works, but it doesn't help me batch process a directory of video files.

  


  Any guidance would be greatly appreciated !