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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

  


• avcodec/agm : Check for reference frame earlier

  4 octobre 2019, par Michael Niedermayer

  avcodec/agm : Check for reference frame earlier
  Fixes : Timeout (14sec -  120ms)
  
  Fixes : 17824/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5639825457152000
  Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/agm.c

• Google Lato Font Display discrepancies between platforms/software [closed]

  5 juin 2024, par CRAIG

  Using Google's Lato font with 400 weight, is giving me some inconsistent results between Photoshop/Web on MacOS and Linux Imagemagick & Linux ffmpeg.

  


  I have printed out some text on my linux server using the font using both imagemagick (v6.9.10-68) and ffmpeg's (v6.0) drawtext feature and in both cases, I get some extra space between the T and the e. (Image below)

  


  At first I was only testing ffmpeg and thought it was related to drawtext, but now that imagemagick is doing the same, I am thinking it may be somehow related to how the server is managing the font ?

  


  I did download the exact same font to test on my Mac and installed it, but I still get the original photoshop results I was getting before. So I don't think it is inherently the font unless I missed a step. I did completely uninstall the font and then install the downloaded one to be sure.

  


  However, the same word, font, font-size combo used in Photoshop and on the web does not produce the same space between the T and the e.

  


  Here is an image I put together showing the results :

  


  

  


  For reference, here is the imagemagick command :

  


  convert -size 900x900 xc:black -font /fonts/Lato:400.ttf -pointsize 261.6 -fill white -gravity center -annotate +0+0 'Text' testoutput.png

  


  And the ffmpeg command :

  


  /usr/local/bin/ffmpeg -f  lavfi  -i  color=c=black@0.0:s=953x953:r=30:d=5,format=rgba  -filter_complex  "drawtext=expansion=none:enable='between(t,0,5)':fontfile='/fonts/Lato\:400.ttf':fontcolor=0xffffffff:fontsize=294:text='Text':x=(w-text_w)/2+0:y=476.5-(max_glyph_a)+(294/2.8)"  -copyts  -threads  1  -c:v  png  -pix_fmt  rgba  -movflags  faststart  -r  30  -t  8  -y  testoutput.mov