becb38c27e
torchaudio was defaulting to the torchcodec backend which requires FFmpeg shared libraries not present in the ComfyUI venv, silently skipping every clip and producing an empty dataset. Also add experiments/vocoder_finetune.json for the BJ vocoder LoRA run (lr=3e-4, rank=128, 10k steps). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>