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• Cropping black bars in video with ffmpeg on ubuntu changes video size

  9 décembre 2013, par pramod

  I have a source video size that's 720x576 with black rectangles on the top and bottom.

  I want to remove the black rectangles and set the output video size to 640x352.

  I tried -vf cropdetect and the value it gave was 640:192:0:80.

  However, putting that same value in crop=<parameter></parameter> changes the output video size.

  How can I fix this ?

  E.g. :

  ffmpeg -i all_the_best_test.mpg -s 640x352 -deinterlace -b 500k -minrate 500k \
  
  -maxrate 500k -aspect 1.82 -force_fps -vcodec libx264 -me_method 10 \
  
  -vf crop=640:192:0:80 -r 25 -acodec libfaac -ac 2 -ar 44100 -ab 96k -subq 6 \
  
  -vpre medium /vod/Movies/final/allthebest-crop-2.mp4

• In Python - how to combine portions of two video files into one video file ?

  1er juin 2018, par James Johnson

  Using Python, how does one combine two video files and then save into one video file ?

  For example :
  I want to combine 0:15 to 0:30 of A.mp4 with 0:10 to 0:20 of B.mp4 to create C.mp4.

  How does one do this in Python ? (possibly using FFMpeg or anything else)

  Thank you !

• Subtitles aren't being burnt into the video | embedding srt into video frames [closed]

  29 février 2024, par X3R0

  Describe the bug

  


  I'm trying to burn a subtitles.srt file onto the video (having the subtitle embeded within the frames themselves)

  


  To Reproduce

  


  both `input.mp4` and `subtitles.srt` are available to the WASM FFMPEG FS
const converted = await ffmpegRef.current.exec([
    '-i', "input.mp4", // Input File
    '-i', 'subtitles.srt',  // Burn subtitles into video
    '-vf', 'subtitles=subtitles.srt',  // Burn subtitles into video
    "output.mp4" // Output File
]);


  


  Expected behavior

  


  The Subtitles should be burned into the video.

  


  Desktop :

  


  

  • OS : Windows 10

  


  • Browser Chrome

  


  • Version 122.0.6261.94 (Official Build) (64-bit) (cohort : M122 Rollout)

  


  


  Additional context

  


  Example extract from the subtitles.srt file

  


  1
00:00:00,280 --> 00:00:01,379
Hi,

2
00:00:01,379 --> 00:00:01,679
and

3
00:00:01,679 --> 00:00:01,980
welcome

4
00:00:01,980 --> 00:00:02,200
to

5
00:00:02,200 --> 00:00:03,220
ClipDrop.

6
00:00:03,799 --> 00:00:03,919
Congratulations

7
00:00:03,919 --> 00:00:04,400
on

8
00:00:04,400 --> 00:00:04,719
being

9
00:00:04,719 --> 00:00:05,040
selected

10
00:00:05,040 --> 00:00:05,259
to

11
00:00:05,259 --> 00:00:05,480
do