All Questions
10
questions
0
votes
0
answers
1k
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mp4 encoded with ffmpeg not displaying on chrome
I am using the command
ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -c:a copy output.mp4
in order to compress my mp4 files. This is the output:
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg ...
0
votes
1
answer
241
views
Looking to compress just a PGS stream of a video
I have a video stored as an mkv with pgs subtitles. I noticed when I burn the subtitles in with this command hereffmpeg -i "movie.mkv" -filter_complex [0:v][vid];[0:s:1][sub];[vid][sub]...
2
votes
2
answers
7k
views
How to compress a video to VVC(h266) or Versatile video Coding
I have a h264 video. I want to compress it to Versatile Video Coding(h266) by using ffmpeg. Can anyone tell me how to do it by using ffmpeg or any other way.
- 21
1
vote
1
answer
474
views
In what order should I use stabilization and compression with ffmpeg?
I shoot videos of soccer games on a Canon Vixia which records at 60fps HD with h264 compression. From the camera it results in 20GB files which I have been recompressing (to save on storage and ...
- 11
0
votes
0
answers
260
views
How can I reduce the file size of a video encoded with wmv2 in ffmpeg?
I have some videos of a slide presentation with audio and need to put them in a wmv container. These videos are intended to be viewed with Windows Media Player. I initially made the mistake to use the ...
2
votes
1
answer
976
views
Why are ffmpeg processed videos per default multiple times smaller in file size than the input file?
I have a mp4 movie of 1:15min length, made with the Sony Alpha 6400 4k camera. It has a size of 528MB. I want to cut it using ffmpeg. Although I only cut a few seconds, the new video was much smaller. ...
- 905
-1
votes
1
answer
1k
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ffmpeg - losslessly compress upscaled video
I cannot seem to find a good answer to this. I have a video file, h264, 1280x720, 251.2 MB.
However the video is upscaled, the actual quality is 1024x576. And not just the numbers are different, there ...
- 109
1
vote
1
answer
609
views
ffmpeg add picture to audio without reduction in quality
I am trying to combine a picture and an audio file without any quality loss. I am currently using the following command:
ffmpeg -r 1 -loop 1 -i ./pic.JPG -i ./audio.wav -acodec copy -r 1 -shortest ...
- 113
69
votes
3
answers
73k
views
Why does preset "veryfast" in FFmpeg generate the most compressed file compared to all other presets?
The FFmpeg wiki says that the best compression rate is by preset "veryslow".
But when I am trying it with my video then preset veryfast provides the best compression in my case.
The following is the ...
- 801
1
vote
1
answer
2k
views
Why does FFmpeg append blank black video to the end of my MP4 files when compressed from MOV?
I have several large MOV files that I want to compress to MP4.
Unfortunately, when I use FFmpeg, it appends lots of black (blank) video at the end.
(The destination file is longer than the source ...
- 1,976