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1. A stream containing B-frames does not play or plays with artifacts (latencies, lags) Symptoms:
Solution: change the encoder settings so, that B-frames were not used (lower encoding profile, specify in the command line etc). 2. AAC frames of type 0 are not supported by decoder and will be ignored while stream pulled playback In this case, warnings will be displayed in the client log:
Solution: use Fraunhofer AAC codec with the following parameter in flashphoner.properties file
3. When publishing and then playing and recording H264 + AAC stream video may be out of sync with sound, or no sound at all. Symptoms: when playing H264 + AAC stream published on server, and when recordingsuch stream, sound is out of sync with video or absent Solution: a) set the following parameter in flashphoner.properties file
This parameter also turns off AAC frames dropping. b) use Fraunhofer AAC codec
4. Sound may be distorted or absent when resampled to 11025 Hz Symptoms: when H264 + AAC stream published on WCS server is played with AAC sample rate 11025 Hz, sound is distorted or absent Solution: do not use 11025 Hz sample rate, or escape AAC sound resampling to this rate, for example, do not set this sample rate in SDP settings. |
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