All Questions
39
questions
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
1
vote
1
answer
935
views
Trimming videos - quicktime vs. mplayer/ffmpeg stack
I have several mp4 video files (H.264, AAC) from which I want to trim a few seconds at the beginning and the end. I used Quicktime Player 7 and MPEG Streamclip for this. The generated files are a bit ...
- 611
0
votes
1
answer
1k
views
FFmpeg can't convert MOV to FLV
When i try to convert a .mov file to .flv i get this type of output.
I get error
Invalid sample format '(null)' Error opening filters!.
When I convert .avi or .mp4 I get no errors. I'm on ...
- 103
1
vote
0
answers
690
views
what is missing in this ffmpeg statement to create a working video conversion
I want to convert videos to a format that my camera reads with ffmpeg.
I have some sample videos from the camera and analyzed them with
mplayer -frames 0 -identify DSCN0001.mov
and with
ffprobe ...
- 1,978
1
vote
0
answers
2k
views
.MOV video compressed with PNG has no alpha channel
I have a QuickTime file .mov with alpha channel compressed with PNG codec. What I need is to create smaller version of this file using ffmpeg. Everything works except new mov has no alpha (Adobe After ...
- 21
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
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 ...
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
2
answers
4k
views
ffmpeg - creating DNxHD MFX files with alphas
I'm struggling with something in FFMpeg at the moment...
I'm trying to make DNxHD 1080p/24, 36Mb/s MXF files from a sequence of PNG files.
My current command-line is:
ffmpeg -y -f image2 -i /tmp/...
- 1,211