BEHAVIOR Was working on a project and started the Preview Render, but it failed. Details revealed the following: Current Frame: 1, percentage: 4 [mov @ 0x7f0f340c6ce0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. Current Frame: 2, percentage: 8 Current Frame: 3, percentage: 12 EXPECTED BEHAVIOR Preview Render to behave normally. BUG DISCOVERED USING Kdenlive 17.07.70 via ppa:kdenlive/kdenlive-master Ubuntu GNOME 17.04 x64 GNOME 3.24.1 desktop environment Linux kernel 4.10.0-20-generic
Please try with the actual Kdenlive AppImage version 18.08.3 Run the Appimage from the terminal (press CTRL + ALT + T). Move to the AppImage folder and run the .AppImage: ./Kdenlive*.AppImage
It seems that this report is related to a very old unmaintained version. A lot changed since then and it is likely that this has been fixed. Feel free to reopen this bug or create a new report if this is still happening with the latest version (https://kdenlive.org/en/download/)