ffmpeg -r 1/5 -start_number 2 -i img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 This line worked fine but I want to create a video file from images in another folder. Image names in my folder are:
img001.jpg img002.jpg img003.jpg ... How could I input images files from a different folder? Example: C:\mypics
I tried this command but ffmpeg generated a video with the first image (img001.jpg) only.
ffmpeg -r 1/5 -start_number 0 -i C:\myimages\img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 7 Answers
See the Create a video slideshow from images – FFmpeg
If your video does not show the frames correctly If you encounter problems, such as the first image is skipped or only shows for one frame, then use the fps video filter instead of -r for the output framerate
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4 Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is that you can control which filter goes first
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4 I tested below parameters, it worked for me
"e:\ffmpeg\ffmpeg.exe" -r 1/5 -start_number 0 -i "E:\images\01\padlock%3d.png" -c:v libx264 -vf "fps=25,format=yuv420p" e:\out.mp4 below parameters also worked but it always skips the first image
"e:\ffmpeg\ffmpeg.exe" -r 1/5 -start_number 0 -i "E:\images\01\padlock%3d.png" -c:v libx264 -r 30 -pix_fmt yuv420p e:\out.mp4 making a video from images placed in different folders
First, add image paths to imagepaths.txt like below.
# this is a comment details file 'E:\images\png\images__%3d.jpg' file 'E:\images\jpg\images__%3d.jpg' Sample usage as follows;
"h:\ffmpeg\ffmpeg.exe" -y -r 1/5 -f concat -safe 0 -i "E:\images\imagepaths.txt" -c:v libx264 -vf "fps=25,format=yuv420p" "e:\out.mp4" -safe 0 parameter prevents Unsafe file name error
Related links
FFmpeg making a video from images placed in different folders
FFMPEG An Intermediate Guide/image sequence
6-pattern_type glob
This great option makes it easier to select the images in many cases.
Normal speed video with one image per frame at 30 FPS
ffmpeg -framerate 30 -pattern_type glob -i '*.png' \ -c:v libx264 -pix_fmt yuv420p out.mp4 Here's what it looks like:
Add some audio to it:
ffmpeg -framerate 30 -pattern_type glob -i '*.png' \ -i audio.ogg -c:a copy -shortest -c:v libx264 -pix_fmt yuv420p out.mp4 These are the test media I've used:
wget -O opengl-rotating-triangle.zip unzip opengl-rotating-triangle.zip cd opengl-rotating-triangle wget -O audio.ogg Images generated with: How to use GLUT/OpenGL to render to a file?
It is cool to observe how much the video compresses the image sequence way better than ZIP as it is able to compress across frames with specialized algorithms:
opengl-rotating-triangle.mp4: 340Kopengl-rotating-triangle.zip: 7.3M
Convert one music file to a video with a fixed image for YouTube upload
Slideshow video with one image per second
ffmpeg -framerate 1 -pattern_type glob -i '*.png' \ -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 Add some music to it, cutoff when the presumably longer audio when the images end:
ffmpeg -framerate 1 -pattern_type glob -i '*.png' -i audio.ogg \ -c:a copy -shortest -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 Here are two demos on YouTube:
Be a hippie and use the Theora patent-unencumbered video format in an OGG container:
ffmpeg -framerate 1 -pattern_type glob -i '*.png' -i audio.ogg \ -c:a copy -shortest -c:v libtheora -r 30 -pix_fmt yuv420p out.ogv Your images should of course be sorted alphabetically, typically as:
0001-first-thing.jpg 0002-second-thing.jpg 0003-and-third.jpg and so on.
I would also first ensure that all images to be used have the same aspect ratio, possibly by cropping them with imagemagick or nomacs beforehand, so that ffmpeg will not have to make hard decisions. In particular, the width has to be divisible by 2, otherwise conversion fails with: "width not divisible by 2".
Full realistic slideshow case study setup step by step
There's a bit more to creating slideshows than running a single ffmpeg command, so here goes a more interesting detailed example inspired by this timeline.
Get the input media:
mkdir -p orig cd orig wget -O 1.png wget -O 2.jpg wget -O 3.jpg wget -O 4.png wget -O 5.jpg wget -O audio.ogg cd .. # Convert all to PNG for consistency. # # Hardlink the ones that are already PNG. mkdir -p png mogrify -format png -path png orig/*.jpg ln -P orig/*.png png Now we have a quick look at all image sizes to decide on the final aspect ratio:
identify png/* which outputs:
png/1.png PNG 557x495 557x495+0+0 8-bit sRGB 653KB 0.000u 0:00.000 png/2.png PNG 664x800 664x800+0+0 8-bit sRGB 853KB 0.000u 0:00.000 png/3.png PNG 544x680 544x680+0+0 8-bit sRGB 442KB 0.000u 0:00.000 png/4.png PNG 207x238 207x238+0+0 8-bit sRGB 76.8KB 0.000u 0:00.000 png/5.png PNG 450x600 450x600+0+0 8-bit sRGB 627KB 0.000u 0:00.000 so the classic 480p (640x480 == 4/3) aspect ratio seems appropriate.
Do one conversion with minimal resizing to make widths even (TODO automate for any width, here I just manually looked at identify output and reduced width and height by one):
mkdir -p raw convert png/1.png -resize 556x494 raw/1.png ln -P png/2.png png/3.png png/4.png png/5.png raw ffmpeg -framerate 1 -pattern_type glob -i 'raw/*.png' -i orig/audio.ogg -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p raw.mp4 This produces terrible output, because as seen from:
ffprobe raw.mp4 ffmpeg just takes the size of the first image, 556x494, and then converts all others to that exact size, breaking their aspect ratio.
Now let's convert the images to the target 480p aspect ratio automatically by cropping as per ImageMagick: how to minimally crop an image to a certain aspect ratio?
mkdir -p auto mogrify -path auto -geometry 640x480^ -gravity center -crop 640x480+0+0 png/*.png ffmpeg -framerate 1 -pattern_type glob -i 'auto/*.png' -i orig/audio.ogg -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p auto.mp4 So now, the aspect ratio is good, but inevitably some cropping had to be done, which kind of cut up interesting parts of the images.
The other option is to pad with black background to have the same aspect ratio as shown at: Resize to fit in a box and set background to black on "empty" part
mkdir -p black mogrify -path black -thumbnail 640x480 -background black -gravity center -extent 640x480 png/*.png ffmpeg -framerate 1 -pattern_type glob -i 'black/*.png' -i orig/audio.ogg -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p black.mp4 Generally speaking though, you will ideally be able to select images with the same or similar aspect ratios to avoid those problems in the first place.
About the CLI options
Note however that despite the name, -glob this is not as general as shell Glob patters, e.g.: -i '*' fails: (apparently because filetype is deduced from extension).
-r 30 makes the -framerate 1 video 30 FPS to overcome bugs in players like VLC for low framerates: VLC freezes for low 1 FPS video created from images with ffmpeg Therefore it repeats each frame 30 times to keep the desired 1 image per second effect.
Next steps
You will also want to:
cut up the part of the audio that you want before joining it: Cutting the videos based on start and end time using ffmpeg
ffmpeg -i in.mp3 -ss 03:10 -to 03:30 -c copy out.mp3Alternatively, you can also cut it directly in the conversion command by adding the
-ssjust before the audio-i:ffmpeg -framerate 1 -pattern_type glob -i 'raw/*.png' -ss 0:36 -i orig/audio.ogg -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p raw.mp4
TODO: learn to cut and concatenate multiple audio files into the video without intermediate files, I'm pretty sure it's possible:
Different duration for each image
You create a file in.txt like:
file png/1.png outpoint 5 file png/2.png outpoint 2 file png/3.png outpoint 7 and outpoint sets the duration of the previous image in seconds.
Then we just remove -framerate from the previous conversion commands:
ffmpeg -f concat -i in.txt -framerate 1 -i orig/audio.ogg -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p black.mp4 I also like that that approach with file names in a file is nicer than having to rename the input files to have the correct order, which makes it easier to quickly reorder images on a text editor (multiple -i did not work). Having two lines per input file makes that a bit more annoying, I didn't manage to combine the file and outpoint into a single line, but still, good to know.
This approach is also convenient if you are just going to convert a subset of your images. Then, to save time on the ImageMagick, you can reuse that in.txt file to loop over only the images you care about:
grep -E '^file ' in.txt | sed -E 's/^file //; s/\..*//' | while read f; do echo $f convert -thumbnail 1280x720 -background black -gravity center -extent 1280x720 "$(command ls -1 ../$f.* | grep -v .xcf | head -n1)" "out/$f.jpg" done Tested on
ffmpeg 3.4.4, vlc 3.0.3, Ubuntu 18.04.
Bibliography
6Simple Version from the Docs
Works particularly great for Google Earth Studio images:
ffmpeg -framerate 24 -i Project%03d.png Project.mp4 cat *.png | ffmpeg -f image2pipe -i - output.mp4
from wiki
5Your files should be named depth_00001.png depth_00002.png etc which ensures the correct order
step 1) If they are called depth_1.png depth_2.png then you can batch rename them to the required naming with this command
for f in depth_[0-9]*; do mv "$f" "$(printf 'depth_%05d' "${f#depth_}" 2> /dev/null)"; done; for f in depth_[0-9]*; do mv "$f" "$f.png"; done; step 2) Then run ffmpeg using standard options
ffmpeg -framerate 30 -i depth_%05d.png -pix_fmt yuv420p -c:v libx264 depth.mp4 step 3) If that fails (it did for me on Windows) then try this instead
cat depth_*.png | ffmpeg -f image2pipe -framerate 30 -i - -pix_fmt yuv420p -c:v libx264 depth.mp4 NOTE: step 2 failed when I used PNGs - but when I used image magick to convert the PNGs to JPGs step 2 worked
Here's the command I used to do the conversion
for image in *.png; do magick convert "$image" "${image%.*}.jpg"; done; Also, I found this command useful to verify that the length of the output video was as expected
ffprobe -v quiet -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 depth.mp4 To create frames from video:
ffmpeg\ffmpeg -i %video% test\thumb%04d.jpg -hide_banner Optional: remove frames you don't want in output video
(more accurate than trimming video with -ss & -t)
Then create video from image/frames eg.:
ffmpeg\ffmpeg -framerate 30 -start_number 56 -i test\thumb%04d.jpg -vf format=yuv420p test/output.mp4 For me to create video with audio it worked, you need to specify:
the normal frames: -framerate 30
the audio -i audio/audio.ogg
and the library libx264
system("ffmpeg -framerate 30 -i #{out_dir}/%03d.png -i audio/audio.ogg -c:a copy -shortest -c:v libx264 -pix_fmt yuv420p out/final /#{out_dir.sub("out/", "")}.mp4") if you want to create a loop, for example 3 times -stream_loop 2 because of 0,1,2
system("ffmpeg -stream_loop 2 -framerate 30 -i #{out_dir}/%03d.png -i audio/audio.ogg -c:a copy -shortest -c:v libx264 -pix_fmt yuv420p -b:v 50M out/final/#{out_dir.sub("out/", "")}.mp4") 
