3 ms·
how come decoding is more work intensive vs transcoding ?
by ddalex 3y ago
how come decoding is more work intensive vs transcoding ?
- magicalhippo 3y agoWith JPEG you can scale down in power-of-two factors by just not processing the higher-frequency components. You're still left with the non-lossy compression step, so one could do something like "unzip", repackage data throwing away the high-frequency stuff, "zip". Wouldn't surprise me if you can do something similar with h264/h265.
- zamadatix 3y agoI'd be surprised if that worked for interframe compression like video but even if it still did, and extremely well, encoding to the resulting format still has to fit in and that's where the majority of the work should be even when you just decoded the source normally.
- smolder 3y agoI think they mean transcoding as an additional step upon already decoded frames.