Update inference_from_video.py

inference_from_video.py

@@ -182,6 +182,10 @@ def main():
             latents = model.inference(scheduler, None, prompt, None, num_steps, guidance, num_samples, disable_progress=True, device=device)
             mel = vae.decode_first_stage(latents)
             wave = vae.decode_to_waveform(mel)
+
+            # Ensure the waveform is exactly 8 seconds long
+            num_samples_8_seconds = sample_rate * max_len_in_seconds
+            wave = [wav[:num_samples_8_seconds] for wav in wave]
             
             all_outputs += [item for item in wave]