4 ms·

I routinely use ffmpeg CLI and I see in top that multiple cores are engaged in the processing. Hadn't it been multi-threaded for years? What exactly is changing

• Shish2k 3y ago
  My interested-lay-person understanding: Previously it would read a chunk of file, then decode it, then apply filters, then run multi-threaded encoding, then write a chunk of file. Now it can read the next chunk of file while decoding a chunk while applying filters while running multi-threaded encoding while writing the previous chunk. I expect this will be a big help for complicated setups (applying multiple filters, rendering to multiple outputs with different codecs), but probably not much change for a simple 1-input 1-output transcode.