[aist#0:2/none @ 0x5861c5531e80] Decoding requested, but no decoder found for: none
Error opening output file /home/sock-asimakopoulos/Videos/Camera/IMG_3900-30fps.mp4.
Error opening output files: Invalid argument
Error I experience when transcoding mov files. Anyone seen this before?
What build/version of kdenlive are you using on what OS and what does ffprobe say about your MOV?
kdenlive 25.08.3, ubuntu 24.05. I am using the flatpak.
ffprobe says this:
Unsupported codec with id 0 for input stream 2
Unsupported codec with id 0 for input stream 3
Unsupported codec with id 0 for input stream 4
Unsupported codec with id 0 for input stream 5
Unsupported codec with id 0 for input stream 6
Unsupported codec with id 0 for input stream 7
Unsupported codec with id 0 for input stream 8
That doesn’t look very auspicious. What created this file, and can you play it anywhere on anything?
An IPhone 16. I’ve been recording through it on a film, and most of the mov’s I have are exactly like this. I would post full transcript but forum will not let me.
It sounds like the MOV files might be using a codec that Kdenlive or FFmpeg doesn’t fully support yet. Since they’re from an iPhone, you might want to try converting them with a tool like HandBrake or using a different codec to see if that helps. Let me know if you try that!
Ok, so the interesting question is whether it’s your Ubuntu release that just isn’t supporting whatever new codec they’re using, or if they really have gone Full Apple on some patent ridden monstrosity again.
You’re the first to report this, so right now all these are open questions, but Apple does have form on this from time to time.
If ffmpeg isn’t supporting it, it’s almost certainly not something you’re doing wrong, unless there’s some optional extra codec packages available that you haven’t yet installed - so the question is how to find out what codec it is, and then what might be able to support it. If you look at the file details on your phone does it say anything interesting?
I would post full transcript but forum will not let me.
If you stick around and play nice it will automatically grant you more privileges.
I don’t exactly have time for that. This thing I’m editing is due tommorow for me and I must work with it.
For Ubuntu, what kind of codec might it not support? Can I install it?
Apparently, the one that your iphone used …
Can I install it?
Maybe. But until you investigate what it is, it’s hard to say more.
How would I investigate it?
Tried it, the mp4’s I export had no audio. wuz going on?
For anyone who stumbles on this later, current OSINT on this is that it looks like the official line from Premier Pro support to iphone 16 users is “turn off spatial audio and HDR support, else sucks to be you” - and I’d imagine the lack of support in ffmpeg is something quite similar (as per the number of ‘unsupported’ streams reported by ffprobe).
I’ve not investigated further to know if there are technical or legal limitations to being able to support their implementation of that in ffmpeg, or whether there has been any interest or action in adding support for it there, but until that changes, the advice here also has to be “Know your device and configure it suitably for what you want to do.”
And maybe something about the real utility of iDevices, but I’ll leave finishing that sentence as an exercise for the people who for some reason still buy them.