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zero_bit for normal frames, so we can distinguish them from other packets

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9312 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2003-02-07 11:20:35 +00:00
parent 1de44c5cde
commit 35a5e9fdb5
1 changed files with 10 additions and 3 deletions
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13
DOCS/tech/mpcf.txt
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@ -123,12 +123,13 @@ frame
if(keyframe){
keyframe_startcode f(64)
}
lsb_timestamp v
stream_id v
zero_bit f(1)
priority u(2)
checksum_flag u(1)
msb_timestamp_flag u(1)
reserved u(4)
reserved u(3)
lsb_timestamp v
stream_id v
if(msb_timestamp_flag)
msb_timestamp v
bitstream
@ -256,6 +257,11 @@ sample_width/sample_height (aspect ratio)
depth
for compatibility with some win32 codecs
zero_bit
MUST be 0, its there to distinguish non keyframes from other packets,
Note: all packets have a 64-bit startcode except non-keyframes to reduce
their size, and all startcodes start with a 1 bit
priority
if 0 then the frame isnt used as reference (b frame) and can be droped
MUST be > 0 for keyframes
@ -325,6 +331,7 @@ headers MUST be repeated at least twice (so they exist 3 times in a file)
Index
the index can be repeated but there MUST be at least one at the end
Note: in case of realtime streaming there is no end, so no index there either
Info packets
the info_packet can be repeated, it can also contain different names & values