Quick Sign In:  

Forum: Video Discussion

Topic: .webp animated to .mp4 [& FFMPEG stuff]
locodogPRO InfinityModeratorMember since 2013
Hi all I'm no expert at this by any means but I spent a while looking how to do this and I didn't find a dummies guide anywhere, so here it is.

.webp ; is a pretty common online format now replacing .gif [way better quality too], but it seems only web browsers support it.

I like using .gif with the slideshow plugin but places like
https://giphy.com/
now store the files as .webp, there may be browser plugins to change formats but I like the simplicity of "right click, save as"
so I download a load of .webp to a folder, also in that folder I drop in
ffmpeg.exe
I also need an exe from google's webp library libwebp I need "anim_dump.exe"
[I grabbed latest x64 version.zip ]
anim_dump, takes an animated .webp and breaks it into .png for every frame.

everything in place, lets turn some .webp into .mp4.
First shift+right click in the folder window, "open powershell window here"
with powershell open type
cmd
press enter to open old school command line, then type this in.
for %i in (*.webp) do anim_dump -prefix %~ni_ %~ni.webp

my dummy understanding of this is
every file that ends .webp, process it with anim_dump, name the dumped .png files "FILENAME_XXXX" [XXXX being the frame number]

it may take a minute when it's done type.
for %i in (*.webp) do ffmpeg -r 15 -f image2 -s 1920x1080 -i %~ni_%04d.png -vcodec libx264 -crf 15  -pix_fmt yuv420p  %~ni.mp4

my dummy understanding
every filename ending .webp, look for filename_XXXX.png and use ffmpeg to piece then all together to make "FILENAME.mp4"
-r is the fps [I used 15 as a lot of my .webp are really short and it looks pretty 'ravey' ]
-crf is quality; the lower the better but 15 is very good apparently.

after that you'll have .mp4, you can delete all the .png & the .webp
which you could do with
del *.png

del *.webp

As I said I'm no expert, I had no idea how to do this yesterday, I've a lot to learn, hopefully this thread becomes a entry point for ffmpeg newbs.
But as a beginner to CLI [command line interface] there is a satisfaction in how easy this is [once you know the incantations to make the magic happen]
 

Posted Thu 01 Jul 21 @ 3:52 am
NicotuxHome userMember since 2014
Note webp is a format well known by VDJ (correctly loaded and render by VDJ)

anim is in implementation in ffmpeg and not yet finalized thus VDJ can't currently render
https://trac.ffmpeg.org/ticket/4907
once done VDJ may handle animated webp natively

when added to supported format :
currently static supported webp appear as video (once already used, same as webm)
when unsupported yet webp appear as audio
 

Posted Thu 01 Jul 21 @ 5:07 am
locodogPRO InfinityModeratorMember since 2013
6 year old ticket though [how long do you want to wait?], I fixed it myself.
 

Posted Thu 01 Jul 21 @ 5:42 am
NicotuxHome userMember since 2014
average wait time for this kind of patch to review accept and apply seems to be near 7 years ^^
 

Posted Thu 01 Jul 21 @ 1:16 pm
Used this myself in rare cases, i wanted to use webp in some video editor (that dont suppor the format)
https://video.online-convert.com/convert/webm-to-mp4

Easy drag and drop for multiple files etc (and 100s of such sites available for easy file conversions)
 

Posted Thu 01 Jul 21 @ 1:31 pm
locodogPRO InfinityModeratorMember since 2013
I caught a few online ones myself Rune, that one looks a lot better than most I saw. Most of my first page search results were one at a time, or do only 5 as a trial.
[I had 300 .webp, a lot I had changed to .gif earlier but they looked horrible]

Part of the 'fun' for me was figuring it out, if only at a superficial level.
 

Posted Thu 01 Jul 21 @ 3:33 pm
yeah i know ;-)
Was just if someone looks at or search this topic in future, there are dead simple drop and covert online sites for it ;-)
 

Posted Thu 01 Jul 21 @ 4:24 pm
locodogPRO InfinityModeratorMember since 2013
best of both worlds, drag&drop online for those that want it quick, or entry level CLI for the curious types;
both our methods will be deprecated... eventually. until then, right now no other dj forum is even talking about it.
 

Posted Thu 01 Jul 21 @ 5:56 pm
And what about "apng" (supported by VDJ)
quick test one created with old RealWorldPaint:

browsers and site display it ok
 

Posted Fri 02 Jul 21 @ 1:27 am