@DRM It looks like I was mistaken(that’s what I get for skimming through folders) Tencoder is defaulting to AVI for the container
I’m going to tell Tencoder to make an MKV and see if it’s any slower which would put you on the right path with the CRC32
Also regarding audio I usually do a 48khz WAV for editing the source is a 128kbit 48khz mp3(on camera recording) FLAC would just be silly