| 1 | | The bug concerning 320x248.hevc is related to having both a default display window in the VUI and a conformance cropping window in the SPS. Both contain a bottom offset of 8 to get from the coded size of 256 to the final display size of 248. |
| 2 | | |
| 3 | | But equations E-47 to E-50 say that the 2 shall be *summed* to produce the final offsets. So libavcodec interprets the signalling as "crop the bottom 8+8 pixels". |
| 4 | | |
| 5 | | Now, why x265 and the reference decoder do not do that... |
| | 1 | EDIT: Nevermind, ffmpeg always multiplies by 2 the default window offset (assuming 4:2:0), while it should use a coordinate system that depends on the chroma format. |
