If I choose a CRF of 20, and I use the "veryslow" preset, the quality
will
still be the same if I choose a CRF of 20 and use the "superfast" preset?
The same with this. If I choose a CRF of 10, and I use the "veryslow"
preset, the quality will still be the same if I choose a CRF of 10 and
use
Am Sa., 7. Aug. 2021 um 11:12 Uhr schrieb Bill Crockett
:
> If I choose a CRF of 20, and I use the "veryslow" preset, the quality will
> still be the same if I choose a CRF of 20 and use the "superfast" preset?
>
> The same with this. If I choose a CRF of 10, a
First of all, I am not doing 2 pass encoding. I am using the CRF option.
They say for constant quality encoding, you will save bitrate by choosing a
slower preset. A slower preset will provide better compression.
ultrafast
superfast
veryfast
faster
fast
medium – default preset
slow
slower
On Wed Jun 17 15:28:43 EEST 2020 Moritz Barsnick wrote:
Hi Bill,
On Wed, Jun 17, 2020 at 12:28:39 +1000, Bill Crockett wrote:
Before you told me this, I did try the words "high" or "main", but I put
in
quotes either single or double and got errors.
It would be extr
- Original Message -
From: "Limin Wang"
To:
Sent: Wednesday, June 17, 2020 10:24 AM
Subject: Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong
On Wed, Jun 17, 2020 at 09:31:47AM +1000, Bill Crockett wrote:
https://ffmpeg.org/ffmpeg-all.html#mpeg2
Who
https://ffmpeg.org/ffmpeg-all.html#mpeg2
Who maintains the documentation on the above and how can I contact to ask if it
is wrong or correct?
16.15 mpeg2
MPEG-2 video encoder.
16.15.1 Options
profile integer
Select the mpeg2 profile to encode:
‘422’
‘main’
‘ss’
I am speeding up a video fps rate to 24 fps. The total # of frames must
stay the same. The audio must speed up also to keep sync.
ffmpeg -i input -r 24 -filter:v setpts=0.999*PTS output
Do I have to add these options to the audio?
-filter:a atempo=1.001
I thought just -r would be global
