DuongHieuMAI · July 13, 2020 15:00 · Jun 28, 2020 · Jun 28, 2020 · Jun 28, 2020 · Jun 28, 2020
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -110,12 +110,12 @@ ss offset = frame number divided by FPS of video = the decimal (in milliseconds)
 
 ## Merge Multiple Videos
 concat demuxer<br>
-`$ cat mylist.txt
-file '/path/to/file1'
-file '/path/to/file2'
-file '/path/to/file3'
-
-$ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4`
+`$ cat mylist.txt`<br>
+`file '/path/to/file1'`<br>
+`file '/path/to/file2'`<br>
+`file '/path/to/file3'`<br>
+<br>
+`$ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4`
 
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -109,9 +109,13 @@ where `vf` is a custom bash script as follows:<br>
 ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. 130.5<br>
 
 ## Merge Multiple Videos
+concat demuxer<br>
+`$ cat mylist.txt
+file '/path/to/file1'
+file '/path/to/file2'
+file '/path/to/file3'
 
-file names in folder, if they contain spaces, must be properly escaped <br>
-`ls * | perl -ne 'print "file $_"' | ffmpeg -f concat -i - -c copy merged.mp4`
+$ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4`
 
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -113,9 +113,6 @@ ss offset = frame number divided by FPS of video = the decimal (in milliseconds)
 file names in folder, if they contain spaces, must be properly escaped <br>
 `ls * | perl -ne 'print "file $_"' | ffmpeg -f concat -i - -c copy merged.mp4`
 
-## Concatenate with crossfade
-`ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex xfade=offset=4.5:duration=1 output.mp4`
-
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -113,6 +113,9 @@ ss offset = frame number divided by FPS of video = the decimal (in milliseconds)
 file names in folder, if they contain spaces, must be properly escaped <br>
 `ls * | perl -ne 'print "file $_"' | ffmpeg -f concat -i - -c copy merged.mp4`
 
+## Concatenate with crossfade
+`ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex xfade=offset=4.5:duration=1 output.mp4`
+
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -47,6 +47,8 @@ strip audio stream away from video<br>
 
 combine the two streams together (new audio with originally exisiting video)<br>
 `ffmpeg -i 36.MOV -i 36.wav -map 0:v -map 1:a -c copy -y 36-encoded.mov`<br>
+or add an offset to audio<br>
+`ffmpeg -i 36.MOV -itsoffset -0.25 -i 36.wav -map 0:v -map 1:a -c copy -y 36-encoded.mov`<br>
 or<br>
 `ffmpeg -i INPUT.mp4 -i AUDIO.wav -shortest -c:v copy -c:a aac -b:a 256k OUTPUT.mp4`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -46,6 +46,8 @@ strip audio stream away from video<br>
 `ffmpeg -i INPUT.mp4 -codec copy -an OUTPUT.mp4`
 
 combine the two streams together (new audio with originally exisiting video)<br>
+`ffmpeg -i 36.MOV -i 36.wav -map 0:v -map 1:a -c copy -y 36-encoded.mov`<br>
+or<br>
 `ffmpeg -i INPUT.mp4 -i AUDIO.wav -shortest -c:v copy -c:a aac -b:a 256k OUTPUT.mp4`
 
 - - - 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -172,7 +172,7 @@ If you want to cut off section from the beginning, simply drop -t 00:00:10 from
 #### reduce filesize
 
 Example:<br>
-`ffmpeg -i input.avi -vcodec libx264 -crf 24 output.avi`<br>
+`ffmpeg -i input.mov -vcodec libx264 -crf 24 output.mp4`<br>
 <br>
 It reduced a 100mb video to 9mb.. Very little change in video quality.
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -118,7 +118,7 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 `$ ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
 
 ## Convert Single Image into a Video
-`ffmpeg -loop 1 -i image.png -c:v libx264 -t 60 -pix_fmt yuv420p -vf scale=1920:1080 out.mp4`
+`$ ffmpeg -loop 1 -i image.png -c:v libx264 -t 60 -pix_fmt yuv420p -vf scale=1920:1080 out.mp4`<br>
 
 ## Convert non-sequentially named Images in a directory 
 `$ ffmpeg -framerate 30 -pattern_type glob -i '*.jpeg' -c:v libx264 -pix_fmt yuv420p gan-1.mov`<br>

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -117,6 +117,9 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 `$ ffmpeg -i image-%03d.png -c:v libx264 -pix_fmt yuv420p test.mp4`<br>
 `$ ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
 
+## Convert Single Image into a Video
+`ffmpeg -loop 1 -i image.png -c:v libx264 -t 60 -pix_fmt yuv420p -vf scale=1920:1080 out.mp4`
+
 ## Convert non-sequentially named Images in a directory 
 `$ ffmpeg -framerate 30 -pattern_type glob -i '*.jpeg' -c:v libx264 -pix_fmt yuv420p gan-1.mov`<br>
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -120,6 +120,9 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 ## Convert non-sequentially named Images in a directory 
 `$ ffmpeg -framerate 30 -pattern_type glob -i '*.jpeg' -c:v libx264 -pix_fmt yuv420p gan-1.mov`<br>
 
+## Convert .mov (JPEG-A or other codec) to H264 .mp4
+`ffmpeg -i input.mov -vcodec libx264 -pix_fmt yuv420p output.mp4`<br>
+
 ## Convert mp4 to webm
 `$ ffmpeg -i example.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis example.webm -hide_banner`<br>
 [more info](http://www.bugcodemaster.com/article/convert-videos-webm-format-using-ffmpeg)

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -117,6 +117,9 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 `$ ffmpeg -i image-%03d.png -c:v libx264 -pix_fmt yuv420p test.mp4`<br>
 `$ ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
 
+## Convert non-sequentially named Images in a directory 
+`$ ffmpeg -framerate 30 -pattern_type glob -i '*.jpeg' -c:v libx264 -pix_fmt yuv420p gan-1.mov`<br>
+
 ## Convert mp4 to webm
 `$ ffmpeg -i example.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis example.webm -hide_banner`<br>
 [more info](http://www.bugcodemaster.com/article/convert-videos-webm-format-using-ffmpeg)

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -25,6 +25,9 @@ In seconds<br>
 In HH:MM:SS format<br>
 `ffmpeg -i input.mp3 -ss 0:01:00 -t 0:00:30 output.wav`
 
+Split an audio stream at specified segment rate (e.g. 3 seconds)<br>
+`ffmpeg -i somefile.mp3 -f segment -segment_time 3 -c copy out%03d.mp3`<br>
+
 ## Extract Audio
 
 `ffmpeg -i input-video.avi -vn -acodec copy output-audio.aac `

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -111,8 +111,8 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 
 ## Convert Images into a Video
 `$ ffmpeg -f image2 -i image%d.jpg imagestovideo.mp4`<br>
-`ffmpeg -i image-%03d.png -c:v libx264 -pix_fmt yuv420p test.mp4`<br>
-`ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
+`$ ffmpeg -i image-%03d.png -c:v libx264 -pix_fmt yuv420p test.mp4`<br>
+`$ ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
 
 ## Convert mp4 to webm
 `$ ffmpeg -i example.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis example.webm -hide_banner`<br>

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -110,7 +110,9 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 `$ ffmpeg -i video.flv image%d.jpg`
 
 ## Convert Images into a Video
-`$ ffmpeg -f image2 -i image%d.jpg imagestovideo.mpg`
+`$ ffmpeg -f image2 -i image%d.jpg imagestovideo.mp4`<br>
+`ffmpeg -i image-%03d.png -c:v libx264 -pix_fmt yuv420p test.mp4`<br>
+`ffmpeg -r 1/5 -i image-%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p test.mp4`<br>
 
 ## Convert mp4 to webm
 `$ ffmpeg -i example.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis example.webm -hide_banner`<br>

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -174,7 +174,7 @@ check for streams that you want (video/audio). be sure to convert/specify DTS 6
 <br>
 `ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:1 -c:v copy -c:a:1 libmp3lame -b:a 192k -ac 6 output.mp4`
 <br>
-### Add Watermark overlay (png) to the center of a video)
+### Add Watermark overlay (png) to the center of a video
 `ffmpeg -i source.mov -i watermark.png -filter_complex "overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2" output.mp4`
 <br>
 - - -

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -173,7 +173,10 @@ make a grayscale version and scale to 640x480
 check for streams that you want (video/audio). be sure to convert/specify DTS 6 channel audio stream<br>
 <br>
 `ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:1 -c:v copy -c:a:1 libmp3lame -b:a 192k -ac 6 output.mp4`
-
+<br>
+### Add Watermark overlay (png) to the center of a video)
+`ffmpeg -i source.mov -i watermark.png -filter_complex "overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2" output.mp4`
+<br>
 - - -
 more commands<br>
 http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -170,9 +170,9 @@ make a grayscale version and scale to 640x480
 ### Convert MKV to MP4
 `ffmpeg -i file.mkv`<br>
 <br>
-check for streams that you want (video/audio)<br>
+check for streams that you want (video/audio). be sure to convert/specify DTS 6 channel audio stream<br>
 <br>
-`ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:2 -c:v copy -c:a aac -b:a 384k output.mp4`
+`ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:1 -c:v copy -c:a:1 libmp3lame -b:a 192k -ac 6 output.mp4`
 
 - - -
 more commands<br>

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -169,7 +169,9 @@ make a grayscale version and scale to 640x480
 
 ### Convert MKV to MP4
 `ffmpeg -i file.mkv`<br>
+<br>
 check for streams that you want (video/audio)<br>
+<br>
 `ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:2 -c:v copy -c:a aac -b:a 384k output.mp4`
 
 - - -

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -167,6 +167,11 @@ Example:<br>
 <br>
 make a grayscale version and scale to 640x480
 
+### Convert MKV to MP4
+`ffmpeg -i file.mkv`<br>
+check for streams that you want (video/audio)<br>
+`ffmpeg -i input.mkv -strict experimental -map 0:0 -map 0:2 -c:v copy -c:a aac -b:a 384k output.mp4`
+
 - - -
 more commands<br>
 http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -162,7 +162,7 @@ Example:<br>
 <br>
 It reduced a 100mb video to 9mb.. Very little change in video quality.
 
-Example:<>
+Example:<br>
 `ffmpeg -i video.mov -vf eq=saturation=0 -s 640x480 -c:v libx264 -crf 24 output.mp4`<br>
 <br>
 make a grayscale version and scale to 640x480

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -159,8 +159,14 @@ If you want to cut off section from the beginning, simply drop -t 00:00:10 from
 
 Example:<br>
 `ffmpeg -i input.avi -vcodec libx264 -crf 24 output.avi`<br>
+<br>
 It reduced a 100mb video to 9mb.. Very little change in video quality.
 
+Example:<>
+`ffmpeg -i video.mov -vf eq=saturation=0 -s 640x480 -c:v libx264 -crf 24 output.mp4`<br>
+<br>
+make a grayscale version and scale to 640x480
+
 - - -
 more commands<br>
 http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -143,18 +143,24 @@ Here's a command line that will slice to 30 seconds without transcoding:
 Do you need to cut video with re-encoding or without re-encoding mode? You can try to following below command.<br>
 Synopsis: ffmpeg -i [input_file] -ss [start_seconds] -t [duration_seconds] [output_file]
 
-#### use FFmpeg cut mp4 video without re-encoding
+#### use ffmpeg cut mp4 video without re-encoding
 
 Example:<br>
 `ffmpeg -i source.mp4 -ss 00:00:05 -t 00:00:10 -c copy cut_video.mp4`<br>
 
-#### use FFmpeg cut mp4 video with re-encoding
+#### use ffmpeg cut mp4 video with re-encoding
 
 Example:<br>
 `ffmpeg -i source.mp4 -ss 00:00:05 -t 00:00:10 -async 1 -strict -2 cut_video.mp4`<br>
 
 If you want to cut off section from the beginning, simply drop -t 00:00:10 from the command
 
+#### reduce filesize
+
+Example:<br>
+`ffmpeg -i input.avi -vcodec libx264 -crf 24 output.avi`<br>
+It reduced a 100mb video to 9mb.. Very little change in video quality.
+
 - - -
 more commands<br>
 http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -97,7 +97,7 @@ A batch file version of the same command would be:<br>
 ## Extract Single Image from a Video at Specified Frame
 `$ vf [ss][filename][outputFileName]`<br>
 where `vf` is a custom bash script as follows:<br>
-`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`<br?
+`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`<br>
 <br>
 ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. 130.5<br>
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -97,9 +97,9 @@ A batch file version of the same command would be:<br>
 ## Extract Single Image from a Video at Specified Frame
 `$ vf [ss][filename][outputFileName]`<br>
 where `vf` is a custom bash script as follows:<br>
-`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
+`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`<br?
 <br>
-ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. 130.5)<br>
+ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. 130.5<br>
 
 ## Merge Multiple Videos
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -96,9 +96,10 @@ A batch file version of the same command would be:<br>
 
 ## Extract Single Image from a Video at Specified Frame
 `$ vf [ss][filename][outputFileName]`<br>
-(ss offset = get the exact frame number, then divide it by FPS of the video to get the decimal (in milliseconds) ffmpeg is looking for i.e. 130.5)<br>
-where vf is my custom script as follows:<br>
+where `vf` is a custom bash script as follows:<br>
 `$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
+<br>
+ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. 130.5)<br>
 
 ## Merge Multiple Videos
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -96,7 +96,7 @@ A batch file version of the same command would be:<br>
 
 ## Extract Single Image from a Video at Specified Frame
 `$ vf [ss][filename][outputFileName]`<br>
-(ss offset=exact frame number divided by FPS of video to get decimal ms ffmpeg is looking for)<br>
+(ss offset = get the exact frame number, then divide it by FPS of the video to get the decimal (in milliseconds) ffmpeg is looking for i.e. 130.5)<br>
 where vf is my custom script as follows:<br>
 `$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -92,6 +92,13 @@ m4a to mp3 conversion with ffmpeg and lame
 A batch file version of the same command would be:<br>
 `for f in *.m4a; do ffmpeg -i "$f" -acodec libmp3lame -ab 256k "${f%.m4a}.mp3"; done`
 
+- - - 
+
+## Extract Single Image from a Video at Specified Frame
+`$ vf [ss][filename][outputFileName]`<br>
+(ss offset=exact frame number divided by FPS of video to get decimal ms ffmpeg is looking for)<br>
+where vf is my custom script as follows:<br>
+`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
 
 ## Merge Multiple Videos
 
@@ -101,11 +108,6 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`
 
-## Extract Single Image from a Video at Specified Frame
-`$ vf [ss][filename][outputFileName]` (ss offset=exact frame number divided by FPS of video to get decimal ms ffmpeg is looking for)<br>
-where vf is my custom script as follows:<br>
-`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
-
 ## Convert Images into a Video
 `$ ffmpeg -f image2 -i image%d.jpg imagestovideo.mpg`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -101,6 +101,11 @@ file names in folder, if they contain spaces, must be properly escaped <br>
 ## Split a Video into Images
 `$ ffmpeg -i video.flv image%d.jpg`
 
+## Extract Single Image from a Video at Specified Frame
+`$ vf [ss][filename][outputFileName]` (ss offset=exact frame number divided by FPS of video to get decimal ms ffmpeg is looking for)<br>
+where vf is my custom script as follows:<br>
+`$ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg`
+
 ## Convert Images into a Video
 `$ ffmpeg -f image2 -i image%d.jpg imagestovideo.mpg`
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -29,7 +29,7 @@ In HH:MM:SS format<br>
 
 `ffmpeg -i input-video.avi -vn -acodec copy output-audio.aac `
 
-`vn` is no video.
+`vn` is no video.<br>
 `acodec` copy says use the same audio stream that's already in there.