#2591: Feature Request: Add ability to use Quick Sync to transcode video files -------------------------------------+----------------------------------- Reporter: zjacobs | Owner: Type: enhancement | Status: open Priority: wish | Component: avcodec Version: git-master | Resolution: Keywords: h264 vaapi | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+-----------------------------------
Comment (by cehoyos): Replying to [comment:5 zjacobs]: > > > http://www.anandtech.com/show/5771/the-intel-ivy-bridge-core-i7 -3770k-review/21 > > > > I did not find any comparison between x264 and QuickSync in this article. Did I miss it? > > > They used x264 in their handbrake test: "We took the profile and performed the same transcode, the result is listed above as the Core i7 3770K (Handbrake). You will notice that the Handbrake x86/x264 path is definitely faster than Cyberlink's software path, by over 50% to be exact. However even using Handbrake as a reference, Quick Sync transcodes over 2x faster." This is missing the clarification that they actually tested with ultrafast and superfast (and possibly some finer presets in-between to test how quality compares at the exact same speed), but please understand that I did not want to move the discussion here (I very rarely encode to h264 and have honestly no opinion on this matter), I just wanted to warn you that more educated people on this matter than I am think that once this is implemented you will be very disappointed with the results. Otoh, if you need to use your CPU while re-encoding, hardware encoding may have its values (if you don't care about the encoding quality). -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2591#comment:6> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://avcodec.org/mailman/listinfo/ffmpeg-trac