Convert Video For Streaming
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ffmpeg -y -i FILE_NAME.wmv -c:v libx264 -c:a aac -coder 1 -b:v 500k -threads 0 -b:a 96k FILE_NAME.mp4 |
if you want to scale the video to specific size, use -vf scale option, example
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ffmpeg -y -i FILE_NAME.wmv -vf scale=720:480 -c:v libx264 -c:a aac -coder 1 -b:v 500k -threads 0 -b:a 96k FILE_NAME.mp4 |
Inject metadata
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qt-faststart FILE_NAME.mp4 FILE_NAME-meta.mp4 |
See ffmpeg
To create thumbnail from video using ffmpeg, use
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ffmpeg -y -ss 01:05:11 -i FILE_NAME -f image2 -vframes 1 1.jpg |
See ffmpeg
To Scape a Video using ffmpeg, run
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ffmpeg -i FILE_NAME.avi -vf scale=1280:720 FILE_NAME_OUT.avi |
See ffmpeg
To cut a video using ffmpeg, use
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ffmpeg -ss 00:17:00 -t 00:33:00 -i FILE_NAME.avi -crf 25.0 -c:v libx264 -c:a aac -ar 48000 -b:a 160k -coder 1 -threads 0 FILE_NAME.mp4 ffmpeg -ss 00:17:00 -t 00:33:00 -i FILE_NAME.avi -acodec copy -vcodec copy -async 1 FILE_NAME.avi |
To install ffmpeg 4 on Ubuntu, you can use PPA
https://launchpad.net/~jonathonf/+archive/ubuntu/ffmpeg-4
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apt install software-properties-common -y add-apt-repository ppa:jonathonf/ffmpeg-4 -y |
Now install ffmpeg with
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apt update && apt install ffmpeg -y |
See ffmpeg
When installing ffmpeg, i get error
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CC libavcodec/libvorbisenc.o CC libavcodec/libx264.o libavcodec/libx264.c: In function ‘X264_frame’: libavcodec/libx264.c:282:9: error: ‘x264_bit_depth’ undeclared (first use in this function) if (x264_bit_depth > 8) ^ libavcodec/libx264.c:282:9: note: each undeclared identifier is reported only once for each function it appears in libavcodec/libx264.c: In function ‘X264_init_static’: libavcodec/libx264.c:892:9: error: ‘x264_bit_depth’ undeclared (first use in this function) if (x264_bit_depth == 8) ^ make: *** [libavcodec/libx264.o] Error 1 |
This is due to incompatability with ffmpeg and x264.
What you can do is try another version of x264. You will be able to download older version of x264 from
ftp://ftp.videolan.org/pub/x264/snapshots
On 2018-08-14, it failed with latest stable snapshot. So i tried 14 days old stable snapshot
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cd /usr/local/src/ wget ftp://ftp.videolan.org/pub/x264/snapshots/x264-snapshot-20180730-2245-stable.tar.bz2 tar xvf x264-snapshot-20180730-2245-stable.tar.bz2 cd /usr/local/src/x264-snapshot-20180730-2245-stable make clean && make distclean ./configure --prefix=/usr --enable-shared make && make install ldconfig |
This worked with ffmpeg.
Solution here is to try latet version first, if it did not work, try older version, say try 1 month old version, if that did not work, go back 2 months, see if that works.
Now install ffmpeg with
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cd /usr/local/src/ wget https://github.com/FFmpeg/FFmpeg/archive/n3.3.5.tar.gz tar zxf n3.3.5.tar.gz cd /usr/local/src/FFmpeg-n3.3.5/ ldconfig make clean && make distclean ./configure --prefix=/usr --enable-shared --enable-libxvid --enable-libvorbis --enable-libtheora --enable-libmp3lame --enable-gpl --enable-libfdk-aac --enable-nonfree --enable-libx264 --enable-libfreetype make && make install && ldconfig |
Install FFmpeg on CentOS using yum
Install ffmpeg on Ubuntu
Cut a Video using ffmpeg
Scale a video using ffmpeg
Create thumbnail from video using ffmpeg
Convert Video info MP4 using ffmpeg
Saving a steam with ffmpeg
ffmpeg -i "stream_url" -c copy -f mpegts test.ts
Example
Following commend will save the steam as 1.mp4
ffmpeg -i "rtmp://cp.livecastnet.com:1935/85nortetv/live" 1.mp4
error: ‘x264_bit_depth’ undeclared (first use in this function
Install epel repository using
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yum install epel-release -y |
Method 1
Install scrpms repo
On CentOS 7
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wget http://scrpms.net/pub/RPMS/el7/x86_64/scrpms-repo-22-3.el7.x86_64.rpm rpm -ivh scrpms-repo-22-3.el7.x86_64.rpm |
On CentOS 6
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wget http://scrpms.net/pub/RPMS/el6/x86_64/scrpms-repo-22-3.el6.x86_64.rpm rpm -ivh scrpms-repo-22-3.el6.x86_64.rpm |
Install ffmpeg with
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yum install ffmpeg ffmpeg-devel |
Method 2
On CentOS 7
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rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm |
Install ffmpeg with
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yum install ffmpeg ffmpeg-devel |
See ffmpeg
