mannyoii · May 4, 2023 16:21 · Nov 25, 2022 · Mar 30, 2021 · Apr 11, 2020 · Dec 3, 2019
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -180,6 +180,12 @@ ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
 - Extract a frame each second: `ffmpeg -i input.mp4 -vf fps=1 thumb%04d.jpg -hide_banner`
 - Extract only one frame: `ffmpeg -i input.mp4 -ss 00:00:10.000 -vframes 1 thumb.jpg`
 
+## Display the frame number on each frame
+
+````
+ffmpeg -i in.mov -vf "drawtext=fontfile=arial.ttf: text=%{n}: x=(w-tw)/2: y=h-(2*lh): fontcolor=white: box=1: boxcolor=0x00000099: fontsize=72" -y out.mov
+````
+
 ## Metadata: Change the title
 
 ````

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -179,3 +179,9 @@ ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
 - Extract all frames: `ffmpeg -i input.mp4 thumb%04d.jpg -hide_banner`
 - Extract a frame each second: `ffmpeg -i input.mp4 -vf fps=1 thumb%04d.jpg -hide_banner`
 - Extract only one frame: `ffmpeg -i input.mp4 -ss 00:00:10.000 -vframes 1 thumb.jpg`
+
+## Metadata: Change the title
+
+````
+ffmpeg -i in.mp4 -map_metadata -1 -metadata title="My Title" -c:v copy -c:a copy out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -18,6 +18,14 @@ ffmpeg -i in.mp4 out.avi
 ffmpeg -i in.mkv -c:v copy -c:a copy out.mp4
 ````
 
+### High-quality encoding
+
+Use the `crf` (Constant Rate Factor) parameter to control the output quality. The lower crf, the higher the quality (range: 0-51). The default value is 23, and visually lossless compression corresponds to `-crf 18`. Use the `preset` parameter to control the speed of the compression process. Additional info: https://trac.ffmpeg.org/wiki/Encode/H.264
+
+````
+ffmpeg -i in.mp4 -preset slower -crf 18 out.mp4
+````
+
 ## Trimming
 
 Without re-encoding:

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -157,10 +157,17 @@ Deinterlacing using "yet another deinterlacing filter".
 ````
 ffmpeg -i in.mp4 -vf yadif out.mp4
 ````
+
 ## Create a video slideshow from images
 
 Parameters: `-r` marks the image framerate (inverse time of each image); `-vf fps=25` marks the true framerate of the output.
 
 ````
 ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
 ````
+
+## Extract images from a video
+
+- Extract all frames: `ffmpeg -i input.mp4 thumb%04d.jpg -hide_banner`
+- Extract a frame each second: `ffmpeg -i input.mp4 -vf fps=1 thumb%04d.jpg -hide_banner`
+- Extract only one frame: `ffmpeg -i input.mp4 -ss 00:00:10.000 -vframes 1 thumb.jpg`
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -157,3 +157,10 @@ Deinterlacing using "yet another deinterlacing filter".
 ````
 ffmpeg -i in.mp4 -vf yadif out.mp4
 ````
+## Create a video slideshow from images
+
+Parameters: `-r` marks the image framerate (inverse time of each image); `-vf fps=25` marks the true framerate of the output.
+
+````
+ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -149,3 +149,11 @@ To replace all audio between 1'20" and 1'30" with silence:
 ````
 ffmpeg -i in.mp4 -vcodec copy -af "volume=enable='between(t,80,90)':volume=0" out.mp4
 ````
+
+## Deinterlace
+
+Deinterlacing using "yet another deinterlacing filter".
+
+````
+ffmpeg -i in.mp4 -vf yadif out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -14,7 +14,9 @@ ffmpeg -i in.mp4 out.avi
 
 ### Remux an MKV file into MP4
 
+````
 ffmpeg -i in.mkv -c:v copy -c:a copy out.mp4
+````
 
 ## Trimming
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -1,20 +1,22 @@
-FFmpeg cheat sheet
-===
+# FFmpeg cheat sheet
 
 A list of useful commands for the ffmpeg command line tool.
 
 Download FFmpeg: https://www.ffmpeg.org/download.html
 
 Full documentation: https://www.ffmpeg.org/ffmpeg.html
 
-Basic conversion
----
+## Basic conversion
+
 ````
 ffmpeg -i in.mp4 out.avi
 ````
 
-Trimming
----
+### Remux an MKV file into MP4
+
+ffmpeg -i in.mkv -c:v copy -c:a copy out.mp4
+
+## Trimming
 
 Without re-encoding:
 ````
@@ -34,8 +36,8 @@ For example:
 ffmpeg -ss [start] -i in.mp4 -t [duration] -c:v libx264 -c:a aac -strict experimental -b:a 128k out.mp4
 ````
 
-Mux video and audio from another video
----
+## Mux video and audio from another video
+
 To copy the video from in0.mp4 and audio from in1.mp4:
 ````
 ffmpeg -i in0.mp4 -i in1.mp4 -c copy -map 0:0 -map 1:1 -shortest out.mp4
@@ -45,8 +47,7 @@ ffmpeg -i in0.mp4 -i in1.mp4 -c copy -map 0:0 -map 1:1 -shortest out.mp4
 - See the [`-map` option documentation](http://ffmpeg.org/ffmpeg.html#Advanced-options) for more info.
 
 
-Concat demuxer
----
+## Concat demuxer
 
 First, make a text file.
 ````
@@ -60,8 +61,7 @@ Then, run `ffmpeg`:
 ffmpeg -f concat -i list.txt -c copy out.mp4
 ````
 
-Delay audio/video
----
+## Delay audio/video
 
 Delay video by 3.84 seconds:
 ````
@@ -72,8 +72,7 @@ Delay audio by 3.84 seconds:
 ffmpeg -i in.mp4 -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
 ````
 
-Burn subtitles
----
+## Burn subtitles
 
 Use the [libass](http://ffmpeg.org/ffmpeg.html#ass) library (make sure your ffmpeg install has the library in the configuration `--enable-libass`).
 
@@ -87,8 +86,7 @@ Then add them using a video filter:
 ffmpeg -i in.mp4 -vf ass=sub.ass out.mp4
 ````
 
-Extract the frames from a video
----
+## Extract the frames from a video
 
 To extract all frames from between 1 and 5 seconds, and also between 11 and 15 seconds:
 
@@ -102,8 +100,7 @@ To extract one frame per second only:
 ffmpeg -i in.mp4 -fps=1 -vsync 0 out%d.png
 ````
 
-Rotate a video
----
+## Rotate a video
 
 Rotate 90 clockwise:
 
@@ -122,8 +119,7 @@ For the transpose parameter you can pass:
 
 Use `-vf "transpose=2,transpose=2"` for 180 degrees.
 
-Download "Transport Stream" video streams
----
+## Download "Transport Stream" video streams
 
 1. Locate the playlist file, e.g. using Chrome > F12 > Network > Filter: m3u8
 2. Download and concatenate the video fragments:
@@ -138,8 +134,7 @@ If you get a "Protocol 'https not on whitelist 'file,crypto'!" error, add the `p
 ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4
 ````
 
-Mute some of the audio
----
+## Mute some of the audio
 
 To replace the first 90 seconds of audio with silence:
 

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -146,3 +146,9 @@ To replace the first 90 seconds of audio with silence:
 ````
 ffmpeg -i in.mp4 -vcodec copy -af "volume=enable='lte(t,90)':volume=0" out.mp4
 ````
+
+To replace all audio between 1'20" and 1'30" with silence:
+
+````
+ffmpeg -i in.mp4 -vcodec copy -af "volume=enable='between(t,80,90)':volume=0" out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -65,11 +65,11 @@ Delay audio/video
 
 Delay video by 3.84 seconds:
 ````
-ffmpeg -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
+ffmpeg -i in.mp4 -itsoffset 3.84 -i in.mp4 -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
 ````
 Delay audio by 3.84 seconds:
 ````
-ffmpeg -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
+ffmpeg -i in.mp4 -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
 ````
 
 Burn subtitles
@@ -137,3 +137,12 @@ If you get a "Protocol 'https not on whitelist 'file,crypto'!" error, add the `p
 ````
 ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4
 ````
+
+Mute some of the audio
+---
+
+To replace the first 90 seconds of audio with silence:
+
+````
+ffmpeg -i in.mp4 -vcodec copy -af "volume=enable='lte(t,90)':volume=0" out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -131,3 +131,9 @@ Download "Transport Stream" video streams
 ````
 ffmpeg -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4
 ````
+
+If you get a "Protocol 'https not on whitelist 'file,crypto'!" error, add the `protocol_whitelist` option:
+
+````
+ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -65,11 +65,11 @@ Delay audio/video
 
 Delay video by 3.84 seconds:
 ````
-ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
+ffmpeg -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
 ````
 Delay audio by 3.84 seconds:
 ````
-ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
+ffmpeg -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
 ````
 
 Burn subtitles

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -121,3 +121,13 @@ For the transpose parameter you can pass:
 ````
 
 Use `-vf "transpose=2,transpose=2"` for 180 degrees.
+
+Download "Transport Stream" video streams
+---
+
+1. Locate the playlist file, e.g. using Chrome > F12 > Network > Filter: m3u8
+2. Download and concatenate the video fragments:
+
+````
+ffmpeg -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -101,3 +101,23 @@ To extract one frame per second only:
 ````
 ffmpeg -i in.mp4 -fps=1 -vsync 0 out%d.png
 ````
+
+Rotate a video
+---
+
+Rotate 90 clockwise:
+
+````
+ffmpeg -i in.mov -vf "transpose=1" out.mov
+````
+
+For the transpose parameter you can pass:
+
+````
+0 = 90CounterCLockwise and Vertical Flip (default)
+1 = 90Clockwise
+2 = 90CounterClockwise
+3 = 90Clockwise and Vertical Flip
+````
+
+Use `-vf "transpose=2,transpose=2"` for 180 degrees.
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -86,3 +86,18 @@ Then add them using a video filter:
 ````
 ffmpeg -i in.mp4 -vf ass=sub.ass out.mp4
 ````
+
+Extract the frames from a video
+---
+
+To extract all frames from between 1 and 5 seconds, and also between 11 and 15 seconds:
+
+````
+ffmpeg -i in.mp4 -vf select='between(t,1,5)+between(t,11,15)' -vsync 0 out%d.png
+````
+
+To extract one frame per second only:
+
+````
+ffmpeg -i in.mp4 -fps=1 -vsync 0 out%d.png
+````
diff --git a/ffmpeg.md b/ffmpeg.md
@@ -65,11 +65,11 @@ Delay audio/video
 
 Delay video by 3.84 seconds:
 ````
-ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i "in.mp4" -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
+ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
 ````
 Delay audio by 3.84 seconds:
 ````
-ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i "in.mp4" -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
+ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i in.mp4 -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
 ````
 
 Burn subtitles

diff --git a/ffmpeg.md b/ffmpeg.md
@@ -0,0 +1,88 @@
+FFmpeg cheat sheet
+===
+
+A list of useful commands for the ffmpeg command line tool.
+
+Download FFmpeg: https://www.ffmpeg.org/download.html
+
+Full documentation: https://www.ffmpeg.org/ffmpeg.html
+
+Basic conversion
+---
+````
+ffmpeg -i in.mp4 out.avi
+````
+
+Trimming
+---
+
+Without re-encoding:
+````
+ffmpeg -ss [start] -i in.mp4 -t [duration] -c copy out.mp4
+````
+- [`-ss`](http://ffmpeg.org/ffmpeg-all.html#Main-options) specifies the start time, e.g. `00:01:23.000` or `83` (in seconds)
+- [`-t`](http://ffmpeg.org/ffmpeg-all.html#Main-options) specifies the duration of the clip (same format).
+- Recent `ffmpeg` also has a flag to supply the end time with `-to`.
+- [`-c`](http://ffmpeg.org/ffmpeg-all.html#Main-options) copy copies the first video, audio, and subtitle bitstream from the input to the output file without re-encoding them. This won't harm the quality and make the command run within seconds.
+
+With re-encoding:
+
+If you leave out the `-c copy` option, `ffmpeg` will automatically re-encode the output video and audio according to the format you chose. For high quality video and audio, read the [x264 Encoding Guide](https://ffmpeg.org/trac/ffmpeg/wiki/x264EncodingGuide) and the [AAC Encoding Guide](http://ffmpeg.org/trac/ffmpeg/wiki/AACEncodingGuide), respectively.
+
+For example:
+````
+ffmpeg -ss [start] -i in.mp4 -t [duration] -c:v libx264 -c:a aac -strict experimental -b:a 128k out.mp4
+````
+
+Mux video and audio from another video
+---
+To copy the video from in0.mp4 and audio from in1.mp4:
+````
+ffmpeg -i in0.mp4 -i in1.mp4 -c copy -map 0:0 -map 1:1 -shortest out.mp4
+````
+- With [-c copy](http://ffmpeg.org/ffmpeg.html#Stream-copy) the streams will be `stream copied`, not re-encoded, so there will be no quality loss. If you want to re-encode, see [FFmpeg Wiki: H.264 Encoding Guide](https://trac.ffmpeg.org/wiki/Encode/H.264).
+- The `-shortest` option will cause the output duration to match the duration of the shortest input stream.
+- See the [`-map` option documentation](http://ffmpeg.org/ffmpeg.html#Advanced-options) for more info.
+
+
+Concat demuxer
+---
+
+First, make a text file.
+````
+file 'in1.mp4'
+file 'in2.mp4'
+file 'in3.mp4'
+file 'in4.mp4'
+````
+Then, run `ffmpeg`:
+````
+ffmpeg -f concat -i list.txt -c copy out.mp4
+````
+
+Delay audio/video
+---
+
+Delay video by 3.84 seconds:
+````
+ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i "in.mp4" -map 1:v -map 0:a -vcodec copy -acodec copy out.mp4
+````
+Delay audio by 3.84 seconds:
+````
+ffmpeg.exe -i "in.mp4" -itsoffset 3.84 -i "in.mp4" -map 0:v -map 1:a -vcodec copy -acodec copy out.mp4
+````
+
+Burn subtitles
+---
+
+Use the [libass](http://ffmpeg.org/ffmpeg.html#ass) library (make sure your ffmpeg install has the library in the configuration `--enable-libass`).
+
+First convert the subtitles to .ass format:
+````
+ffmpeg -i sub.srt sub.ass
+````
+Then add them using a video filter:
+
+````
+ffmpeg -i in.mp4 -vf ass=sub.ass out.mp4
+````