b4c3359828
There is no need to duplicate the input reference, since a filter should not pass along a reference which is later modified. If this happens the filter passing the reference should be fixed. Also improve consistency with start_frame() of settb, allowing a pending factorization.
FFmpeg README ------------- 1) Documentation ---------------- * Read the documentation in the doc/ directory in git. You can also view it online at http://ffmpeg.org/documentation.html 2) Licensing ------------ * See the LICENSE file. 3) Build and Install -------------------- * See the INSTALL file.