Hello everyone.
It seems to me that with version 26.2.16, exporting an MLT video to MP4 takes much longer than with previous versions. For example, exporting a 13 minutes video from Shotcut takes 15 minutes.
Do you think this is a reasonable time?
My hardware:
Windows 11 – Asus ROG Strix – G733 QS – 16GB graphics card – 32GB RAM
AMD Ryzen 9 processor – Radeon 5900HX graphics.
Thank you for your feedback.
Sincerely
Just a thought - in December, Shotcut gained partial support for 10-bit processing on the CPU (including implicitly if you have GPU effects enabled), which comes at a performance cost:
There is a new sub-menu in Settings > Processing Mode with options:
Native 8-bit CPU (fast, flexible)
Native 10-bit CPU (slower, better)
Linear 10-bit CPU (slowest, best)
Linear 10-bit GPU/CPU (Experimental)
Non-linear “native” options are still included because there is a signficant performance decrease when using linear (more conversions). We have a plan to improve performance for the next release. 8-bit is still included because it is more “flexible” by including more video filters. Of course, you can use an 8-bit video filter in a 10-bit, but the quality of the video clip or track will suffer a reduction in bit depth.
Might this be what you’re seeing?
I just made a test with a non-trivial project (multiple tracks, filters, videos, images, and audio). In version 25.08 an export took 2:00 and in version 26.2.16 beta 1:49 (faster). Using Settings > Processing Mode > 8-bit with hardware encoder on Windows.
Hello,
Thank you for your quick reply.
On my computer, I use French, and Shotcut only offers 10-bit modes, not 8-bit.
However, if I use English, it offers both 8-bit and 10-bit modes. There seems to be a translation issue.
I have an MLT project to which I want to add simple text, but Shotcut tells me that “I cannot add non-sweepable text.” What does this mean, and what should I do?
I haven’t used Shotcut since February 2024. I’ve been quickly reading through the documentation and updating Shotcut.
Indeed, they made an error.
They used 10 bits natif instead of 8 bits natif in the French translation.
Corrigé pour la prochaine version.
Fixed for next release.
Merci de votre réponse.
POUR la version Française j’ai coché 10 bit natif et enregistré le même projet en 5 minutes au lieu de 15 et Shotcut la enregistre comme un 8 bit natif.
Cordialement
For the French version I checked 10 native bit and recorded the same project in 5 minutes instead of 15 and Shotcut records it as a native 8 bit.
Processing mode is not equal to export. There are separate 10-bit export presets. It can make sense to process in 10-bits but export to 8. For example, the audio is generally 32-bit float in processing but usually not exported as such.
tells me that “I cannot add non-sweepable text.”
If it literally says that it is another translation bug because that is not the English version of that string. You should post in French, and I will use my web browser to translate or lookup the French word in the translation file. There is an English string “You cannot add a non-seekable source.” I do not know why you would get that. It does not make sense for the vague steps that you provided. There are a lot of easy ways to add text in numerous places.
