Questions tagged [libx264]
The libx264 tag has no usage guidance.
9
questions
0
votes
0
answers
558
views
How to enable libx264 in ffmpeg in openwrt
when I run 'ffmpeg -encoders=libx264',
it shows:
Unknown encoder 'libx264'
I have installed 'ffmpeg' on Openwrt. How i can enable this. Please guide me
2
votes
1
answer
802
views
FFMpeg Segment MP4 Negative Audio PTS
I'm trying to split an mp4 file into segments and each segment should start with near to zero a/v pts. I'm also re-encoding the mp4 file for different bitrates. This is the command I used;
ffmpeg -i &...
- 23
9
votes
1
answer
31k
views
What is the different of h264 and libx264
I notice there is argument available for
--enable-encoder=h264,libx264 suppose I am converting the video looselessly
Which one default ffmpeg will use? h264 or libx264?
And how about the quality ...
- 111
1
vote
1
answer
2k
views
height not divisible by 2 (176x99)
I am trying to convert a .avi file into a .mp4 one using FFMPEG using the libx264 codec.
This is the command I am running:
ffmpeg -i filename.avi -c:v libx264 -crf 19 -strict experimental ...
3
votes
1
answer
2k
views
ffmpeg WebM to MP4: awful video quality
I'm trying to convert a WebM video coming from a webcam to an MP4 x264 format.
I tried to use this ffmpeg command:
ffmpeg -stats -nostdin -y -flags global_header -i "/home/Foto/incoming-video/2017-05-...
- 53
1
vote
1
answer
5k
views
ffmpeg settings for high quality youtube videos
I am trying to record short video of my desktop and upload it to youtube.
The problem is that every time when I upload it to youtube or even dropbox (as video), the quality is much worse.
My ffmpeg ...
- 157
1
vote
0
answers
515
views
FFMPeg + x264 install. Pthreads not workng? "libpthread.a" errors
Nothing I've tried so far works.
x264 is already installed.
OpenSSL and FDKaac are also installed.
Configure line for FFMPeg:
PKG_CONFIG_PATH="$HOME/ffmpeg/lib/pkgconfig" ./configure --prefix="$...
- 11
5
votes
3
answers
7k
views
"height not divisible by 2" with "min"
Using this command:
ffmpeg -loop 1 -r 1 -i q.jpg -t 5 -pix_fmt yuv420p -vf 'scale=-2:min(1080\,ih)' z.mp4
I get this message:
[libx264 @ 00000000004d0ec0] height not divisible by 2 (954x953)
I can ...
- 1
0
votes
0
answers
159
views
ffmpeg libx264 optimization
Suppose I have a computer with 16 cores and a large number of videos to convert (say 100)
What is the optimal number of videos to convert at one time?
eg:
16 cores per video, 1 file at a time
8 ...
- 691