On 26 April 2018 at 17:25, Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> wrote: > Hi All. > > I'm trying to get a V4L2 M2M driver sorted for the Raspberry Pi to > allow access to the video codecs. Much of it is working fine. > > One thing that isn't clear relates to video decode. Do the compressed > formats (eg V4L2_PIX_FMT_H264) have to be framed into one frame per > V4L2 buffer, or is providing unframed chunks of an elementary stream > permitted. The docs only say "H264 video elementary stream with start > codes.". Admittedly timestamps are nearly meaningless if you feed in > unframed data, but could potentially be interpolated. > > What does other hardware support? > > I could handle it either way, but there are some performance tweaks I > can do if I know the data must be framed. Does anyone have any view on this? Thanks Dave
