When we set negative playback rate (eg. -1.0) for video element with mp4 video it is ommited becouse GStreamer doesn't support negative playback rate for most of codecs. I already working on patch for this issue.
Any news about this?
What exactly is the problem here? GStreamer currently does not support negative playback rate for normal HTTP streams (but for HLS for example it does). There seems to be some planning to be done how it could be supported for normal HTTP streams too.
Without additional context about this issue (which codecs? which source protocol?) we can't do much. Please re-open after providing those informations.