All Questions
39
questions
58
votes
1
answer
50k
views
Why can't Quicktime play a movie file encoded by FFmpeg? [duplicate]
When I try to open a movie I just created with the command:
ffmpeg -pattern_type glob -i '*.JPG' -s 640x480 movie.mp4
I get an error from QuickTime:
The document “movie.mp4” could not be opened.
...
- 2,784
14
votes
3
answers
17k
views
Combine MOV video files
I'm on Arch Linux 4.13.10 and I'd like to combine multiple .MOV files shot with a Canon EOS camera.
I tried to convert the files to transport streams (.ts files) using FFmpeg, as shown here, but ...
- 1,350
12
votes
2
answers
16k
views
What parameters should I be looking at to reduce the size of a .MOV file?
My Canon 60D creates .MOV files when recording video and I've found out that the .MOV container has an H264 video stream and a PCM audio stream.
I've used ffmpeg and GSpot to look at some of my ...
5
votes
1
answer
11k
views
Re-encode 4K video to H.265/HEVC with FFmpeg for playback in QuickTime
I have a one hour 4K video which was weighing in at 10 GB. I thought I'd try re-encoding to HEVC using FFmpeg to try to save space, something I hadn't tried before.
However, I switched the container ...
- 639
4
votes
0
answers
2k
views
How do I extract a QuickTime text track using FFMPEG?
I have a .mov container with a QuickTime text track which QuickTime uses to display chapter markers. In the QuickTime 7 Pro User's Guide, the description for how to do this is in Editing and Authoring ...
- 425
4
votes
1
answer
4k
views
How to accurately split and combine videos with ffmpeg respecting inpoint/outpoint
I'm learning how to split and combine videos with ffmpeg. Presently I'm practicing on a 799 KB MP4, one_through_ten-timestamped.mp4, where each frame has a burnt-in "frame number" (up to frame 40, the ...
- 425
3
votes
1
answer
5k
views
Lossless H.264 MP4 file created from images cannot be played in QuickTime
I'm trying to find the optimum settings for creating a .mp4 file that will load easilly both on Mac and Windows.
Right now with these settings
f image2 -pattern_type glob -i '*.png' -vcodec libx264 -...
- 2,697
3
votes
0
answers
711
views
Why doesn't my audio work in Quicktime (but does in other players) when combining an mp3 and video file using FFmpeg?
I'm trying to denoise the audio in a video. I've determined that this isn't really possible in ffmpeg, so I've extracted the audio from the video this way.
$ ffmpeg -i found1-1.mp4 audio.mp3
$ ffmpeg ...
- 1,014
2
votes
1
answer
4k
views
How can I change the language metadata with ffmpeg without converting video?
I want just to change in a MOV video the language from English to Spanish.
I'm using
ffmpeg -i in.mov -metadata:s:1:1 language=spa out.mov
I add out.mov because is mandatory, but I don't want to ...
- 21
2
votes
1
answer
2k
views
Splitting up mp4 files with ffmpeg results in black videos
I'm trying to split a long video in mp4 format into 60 second sections:
ffmpeg -i YDXJ0028.mp4 -c copy -segment_time 60 -f segment YDXJ0028_%03d.mp4
This kind produces the segmented video files, but ...
- 2,349
2
votes
1
answer
1k
views
Why does QuickTime not play a video with CRF of 0, but is happy with 10?
I'm experimenting with video compression using ffmpeg (version 4.2.2), and used this command:
ffmpeg -i old.mp4 -c:v libx264 -crf 0 -preset fast newCrf0.mp4
but the resulting video would not play on ...
- 178
2
votes
2
answers
328
views
Command line way to flatten a multi-channel-audio .Mov into a single-channel-audio .Mov?
Caveat: I'm not very familiar with audio codecs and terminology, so it could be that I'm not using the correct words to describe what I want to do. I've attempted to make that clear.
I'm using ecamm'...
- 193
2
votes
1
answer
1k
views
.MOV file has audio synchronization errors in any editor but plays fine in VLC
I have a .mov file with H.264 1080p video and raw 16-bit PCM audio that I need to edit (remove a portion of).
The original file plays fine in Gnome's movie player and VLC but as soon as I open the ...
- 237
2
votes
1
answer
1k
views
ffmpeg - convert MOV to AVI but decrease frame rate
I have several videos that are filmed with a portable camera and saved in .MOV. Since these are videos of university lectures and have video of the boardwork done by the professor, I would like to ...
- 893
1
vote
1
answer
1k
views
Create a watermark in a separate track with FFmpeg
I have a PNG (alpha) file and a video file. I want to create a video in which the first track is the image and the second track is the video (PNG over video). The problem is that the PNG doesn't ...
- 11