| 6 | | In any case, while I'm not able to analyse the code, for three reasons there does seem to be the possibility that the further configuration is correctly set by '-x264opts level', but (accidentally) partially overwritten by ffmpeg subsequently. 1) 'x264 --level' correctly sets the level-specific configuration, including refs, which creates the possibility that libx264 might do the same. 2) When not given a '-refs' value, ffmpeg always defaults to 16. 3) All encodes done with '-x264opts level' and without '-refs' have refs=16. Together these give rise to the possibility that when '-x264opts level' is used, libx264 correctly sets the configuration, but that ffmpeg subsequently overwrites refs with its default of 16. |
| | 6 | In any case, while I'm not able to analyse the code, for three reasons there does seem to be the possibility that the further configuration is correctly set by '-x264opts level', but (accidentally) partially overwritten by ffmpeg. 1) 'x264 --level' correctly sets the level-specific configuration, including refs, which creates the possibility that libx264 might do the same. 2) When not given a '-refs' value, ffmpeg always defaults to 16. 3) All encodes done with '-x264opts level' and without '-refs' have refs=16. Together these give rise to the possibility that when '-x264opts level' is used, libx264 correctly sets the configuration, but that ffmpeg overwrites refs with its default of 16. |
