I am new to animation in krita. I made a short animation but when it comes to exporting it, my computer says that it cannot read that format (Mp4) or that it is corrupted. Look for solutions by youtube, internet and try to reinstall Ffmpeg but it doesn’t work.
Previously I managed to export only one animation to Mp4, so I thought it was fixed, but the problem came back
What i have to do?
Hello and welcome to the forum 
Which version of krita are you using?
Which operating system are you using?
Where did you get ffmpeg from?
Is the .mp4 file a ‘reasonable’ size and not 0 bytes?
Have you followed the instructions in the manual? :
https://docs.krita.org/en/reference_manual/render_animation.html
(note the warning at the bottom of the page for Windows Media Player)
Have you tried playing the .mp4 file using the VLC media player (which I would recommend)?
Thank you for answering so quickly.
I am using Krita version 4.1.7
I use Windows 10
I pulled ffmpeg from the youtube links, the last time I tried to render, it was from a response you gave to someone else who also had trouble rendering
The file was always of reasonable weight.
I followed the instructions from manual.
i didn´t try to use VLC
The situation is strange. when I render it an error appears saying that it is damaged or that the format is not compatible. but I could already export 2 animations. The first time I thought everything was resolved, but then it happened again. The second time (yesterday) after trying all afternoon and finally turning off the computer, when i turned it back on you could see the Mp4, although before it was NOT compatible
Do you know why this could be?
You really should update to krita version 4.2.9 which has many bug fixes and improvements over 4.1.7
Version 4.3.0 will be released soon but please update to 4.2.9.
Just to be clear, you should download ffmpeg from:
https://ffmpeg.zeranoe.com/builds/win64/static/ffmpeg-4.2.3-win64-static.zip
If you render out a .mp4 file with no error messages from krita, and it’s a reasonable size, but it doesn’t play in your Windows Media Player then you should use the VLC player instead. It really is good and I recommend that you use it anyway.
If a particular .kra file renders out ok but another one doesn’t then it’s something about the animation in the .kra file.
Have you made sure that the canvas size is an even number of pixels for both width and height?
(I think this limitation will be removed eventually but for now you should use an even number for the canvas dimensions.)
For the situation where it’s ‘damaged’ (and it will not play in VLC) then can you post a link to the log_encode.log file? It’s too big to paste it in a reply here so please use a file sharing link.
Thank you very much for helping, once you update Krita, try 3 times to export an animation made above and it works perfectly. The corrupted video error also didn’t reappear, so I can’t show it.
Thank you for helping
I have a question, the link you send us dont exist anymore and i cant export my work, please help me, thanks.
AYUDAAAA
You can track them down via ffmpeg.org
The person who ran the zeranoe site (as a free service and an act of kindness) decided to stop doing it for some reason.
You can now get Windows builds from gyan.dev but it is a bit confusing in there.
This one should work for you:
https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip