This is built on the assumption that the first partition of each
VP8 packet is essential for decoding any later packet - if this
partition is broken/missed, the arithmetic coder gets out of sync
and decoding the bitstream in further packet ends up with total
garbage. If packets of a frame are lost, make sure the first
partition is intact (return only this part of the packet, nothing
else), otherwise stop returning data until the next keyframe is
received.
Alternatively, one would simply not return any packets at all
until the next keyframe, if packet loss is detected.
Signed-off-by: Martin Storsjö <martin@martin.st>
Not all details are implemented, but it's enough for proper
playback as long as there is no packet loss.
Tested to work with the packetizer in gstreamer (which although
uses a different codec name, to clarify that it is still a spec
draft).
Signed-off-by: Martin Storsjö <martin@martin.st>
In the name of consistency:
put_byte -> avio_w8
put_<type> -> avio_w<type>
put_buffer -> avio_write
put_nbyte will be made private
put_tag will be merged with avio_put_str
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 77eb5504d3)
In the name of consistency:
put_byte -> avio_w8
put_<type> -> avio_w<type>
put_buffer -> avio_write
put_nbyte will be made private
put_tag will be merged with avio_put_str
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
The current implementation is incompatible with the latest spec drafts,
this should be communicated clearly to the user.
Originally committed as revision 25887 to svn://svn.ffmpeg.org/ffmpeg/trunk
Martin Storsjö
Anton Khirnov
Diego Biurrun
Mans Rullgard
Josh Allmann