Known Issues
The following are known issues in this release:
When doing HDS and HLS VoD streaming, we recommend scheduled cycling of
servers to maintain stable quality of service for end users. Because HTTP streaming
is stateless, one can have one or more servers from which content is served, and
bring any of them down without service interruption.
When performing multipoint publish of HDS and HLS live streaming, an "Error from
libf4f.dll: F4V error: 1280" is logged and playback will stop. We recommend
configuring the encoder to push the live streams to multiple servers directly.
Non-English URL's are not currently supported
When doing HDS and HLS live streaming, if audio or video is received after the first
fragment has been created this can lead to a "Track not found" error that results in a
recording error. To ensure this does not happen, audio and video should start at the
same time.
Flash Media Server 4.0 inverted the order of delivering NetStream.Unpublish.Success
and Connection.Closed messages where now Connection.Closed appears second.
This can lead to compatibility issues with previous server script applications.
For the server IP, FMS often mistakenly reports an IP address that is not relevant to
the connecting client, such as 127.0.0.1
The LiveCast application may halt streaming playback randomly due to a code
garbage collection issue.
Setting bandwidth to a very low setting via the setBandwidth API, then seeking may
stall a stream permanently, requiring a reconnection and replay.
Encrypting of an HLS live stream may start to fail under high load, and heavy seeking.
When the disk load is high you may see “Failed to swap” warnings in the logs which
appear to be a nuance of the Windows file system. This may result in a stale file
being returned, but is otherwise harmless, and the HDS Live recording should be
unaffected.
MP4/F4V files that have a negative ctts offset may not play properly via HLS and may
exhibit artifacts during playback.
Changing encoder configurations and appending to an existing recording will result in
playback problems. A recording is assumed to be a particular audio/video
configuration, and changing it mid stream is unsupported.
Requests for HLS encryption key from iPad 1(3.2.2) over HTTPS will result in a client
authentication failure during the SSL handshake.
Apple’s MediaStreamValidator throws the following error when validating encrypted
vod content. "ERROR: Invalid media segment: The validator helper exited due to a
fatal error: segment duration is not finite." This is a known Apple bug acknowledged
in the following tech note:
http://developer.apple.com/library/ios/#technotes/tn2235/_index.html. A bug has
been filed with Apple (Bug No: 9620349), and we have not yet received an update.
We believe this is an Apple bug because the stream plays back correctly which would
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