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• Encode multiple files from the same Folder with Google Colab & FFmpeg

  16 août 2021, par Ptibouc77

  i made a Google colab to encode my videos, but actually i can only do files on by one.
I want to encode all video files from the same folder.

  


  I tried this but didn't seem to works

  


      import os

DIRECTORY= '/content/drive/My Drive/Videos'
for filename in os.listdir(DIRECTORY):
    if (filename.endswith(".mov")): #or .avi, .mpeg, whatever.
        os.system("ffmpeg -i {0} -c:v libx265 -crf 26 -c:a aac -b:a 160k output%d.mp4".format(filename))
        print(filename)


  


  Edit : I edited the FFmpeg command but still not workings on Google Colab.
Edit 2 : Print command only return the name of the files with the extension like "MyMovie.mov" how do i put the full path to the ffmpeg command ? I also want to put the ouput files to a subfolder named x265

  


• Rotation Video Overlay Over Image producing some weird output with the FFMPEG KIT for android by arthenica / ffmpeg-kit

  25 octobre 2023, par Yash Kalariya

  I want to overlay some video on the image frame and rotate it and output it as the resultant video. However the command is running successfully but it is producing some weird output video with both the top and bottom portion with black layer, but however the rotation of the video over the image is successful but the top and bottom portion are getting black.

  


  Here is my command that i have used with the ffmpeg kit for android by arthenica/ffmpeg-kit.

  


  "-i " +inputImage+" -i "+inputVideo+" -filter_complex [1:v]format=rgba,rotate="+(float) Math.toDegrees(Double.parseDouble("-1.1073"))+"*(PI/180)[a] ;[0:v][a]overlay=252:103 "+ "-threads 5 -preset veryslow -q:v 3 "+resultVideo

  


  "-i /data/user/0/com.codemenschen.lmsapp/files/images/1698225617748.jpeg -i /data/user/0/com.codemenschen.lmsapp/files/videos/Lmwy1698225601507.mp4 -filter_complex [1:v]format=rgba,rotate=-63.443615*(PI/180)[a] ;[0:v][a]overlay=252:103 -threads 5 -preset veryslow -q:v 3 /data/user/0/com.codemenschen.lmsapp/files/videos/Lmwy1698225618149.mp4"

  


  Here is the link to the Image frame :
https://drive.google.com/file/d/1G6R7_E5prAE6QBRipKIgA7G6Imjy_KM3/view?usp=sharing

  


  Here is the link to the Overlay Video : https://drive.google.com/file/d/1sYWt1Whu5TqaxSMHc6zpgGedEBaWuRqP/view?usp=sharing

  


  Here is the link to the Output Video : https://drive.google.com/file/d/1cQ2G77bVqFc6e1vZJBXo0MHw7TyBiiVN/view?usp=sharing

  


  Can someone help me with this ?

  


  Here is the command that i have tried and its working but producing weird outputs with black portion :

  


  "-i /data/user/0/com.codemenschen.lmsapp/files/images/1698225617748.jpeg -i /data/user/0/com.codemenschen.lmsapp/files/videos/Lmwy1698225601507.mp4 -filter_complex [1:v]format=rgba,rotate=-63.443615*(PI/180)[a] ;[0:v][a]overlay=252:103 -threads 5 -preset veryslow -q:v 3 /data/user/0/com.codemenschen.lmsapp/files/videos/Lmwy1698225618149.mp4"

  


• How can you get a webm file without headers to play video and audio ?

  31 août 2023, par John

  Right now I have webm files that are missing the header information so they don't play. How can I fix them so that they play ? My only hack is to get a small webm file with header information and prepend the file, then encode to mp4 and mp3.

  


  ffmpeg -i input.webm output.mp4
[matroska,webm @ 0x13481be00] Format matroska,webm detected only with low score of 1, misdetection possible!
[matroska,webm @ 0x13481be00] EBML header parsing failed
kyle.webm: Invalid data found when processing input


  


  Example file : https://drive.google.com/file/d/1j21wxHyQimMorWU99MJx—4YhgSimkp7/view?usp=share_link