Marth64 changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.1 is released
<Neville>
My current ffmpeg command generates an MP4 file with a 23.98 frame rate, even though I explicitly set both the input frame rate (-framerate 24000/1001) and output frame rate (-r 24000/1001) in the parameters.
<Neville>
The goal is for ffprobe to display the frame rate as 23.976 fps (avoiding the rounded value of 23.98). Could you suggest additional parameters or adjustments to the parameter order to achieve this?
<Neville>
Below is my ffmpeg command for reference:
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<grib>
boombatz: there's a few things to fix -- the "rotate=90" is an output filename at the moment, you probably want -filter:v (or the shortcut -vf) for a simple video filter
<grib>
unless you mean the rotate=90 to be part of the metadata specifier?
<grib>
if you mean to turn the video 90 *degrees* (sideways), -vf "rotate=PI/2" because the angle is in radians (and PI/2 is equivalent of 90 degrees)
<BtbN>
That's exactly the point, so NOT re-encode
<BtbN>
can't copy and filter
<BtbN>
mp4 supports rotation metadata.
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<grib>
ah, i get it.
<BtbN>
Just use -display_rotation really
<grib>
for what it's worth, the original line that boombatz gave does actually seem to work now that i try it
<BtbN>
Yeah, it's the old way of doing it.
<BtbN>
It entirely relies on the player actually respecting the rotation metadata though
<BtbN>
and not all do
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<another|>
elChippo: There seems to be nothing wrong with mediainfo
<another|>
Xafg: ffmpeg HEAD -> master
<Xafg>
This is my command and -map_metadata -1 should remove everything but it doesn't
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<elChippo>
Xafg: oh, I see it on a video file but not audio file
<Xafg>
Since audio is separate and you are using Dash for this this is a video only command
<elChippo>
I don't use Dash
<elChippo>
have you tried -bitexact ?
<another|>
I cannot reproduce this with either 7.1 nor master
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<another|>
none have any date set
<Xafg>
ok i try
<another|>
e.g. `ffmpeg -i test.mp4 -c copy bar.mp4`
<Xafg>
It didn't help, I still have the file creation date
<Xafg>
Maybe dash is adding something to the header because I have no idea how to solve this
<another|>
wait. dash?
<Xafg>
Yes
<another|>
What is dash having to do with this?
<Xafg>
It shouldn't do anything, but I don't know where the problem is that removing the date doesn't work in any way
<Xafg>
I'll keep looking and let you know if I find a solution. Thanks for your help
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<Xafg>
On Windows it removes the date to install the latest ffmpeg on the server and the same command on Windows removes it on Linux, any ideas how to remove the file creation date?
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<another|>
Could not parse.
<Xafg>
It would be best if someone from dev could comment because I have no idea how to solve this.
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<BtbN>
First step would be describing what you mean in an understandable way.
<Xafg>
I need to remove Encoded Date + Tagged Date from metadata, on windows after converting Encoded Date + Tagged Date is removed, the same done on linux does not remove Encoded Date + Tagged Date
<BtbN>
That seems rather unlikely, there are no differences like that depending on the OS
<Xafg>
So where to look for the cause?
<BtbN>
probably just vastly different versions?
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<Xafg>
No my friend both 2 versions are the latest 7.1
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