Hi, I'm not completely new to Cinelerra but I don't use it very often. Recently I installed version 8 and I'm having issues with sound synchronization. If I reproduce the clip video on VLC, the sound is in sync but Cinelerra isn't able to sync it. I tried changing the audio offset in Preferences but it doesn't work. I've found that the first second or so the video is accelerated, it doesn't matter where I start the reproduction. I'm using a clapperboard so I know when the sound should be in sync. The video file information is: File format: Quicktime for Linux Bytes: 20,060,842 Bitrate (bits/sec): 2,711,599 Audio Compression: MPEG4 Cannels 1 Speed: 48000 Bits: 16 Bit Linear Video Compression: H.264 Frames/sec: 29.64 My computer is a bit old: Cores: 2 (4 logic ones) RAM 8GiB OS: Debian 12 No SSD, but it is new (1TiB). Cinelerra version: 8 (Installed few hours ago). Thanks for your time, Guillermo Martínez J.