muxerstream and MP4 incompatibility about beamcoder HOT 6 OPEN

Do you think this could be caused by the missing bitstream filter as mentioned in #35?

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I don't think so; according to the trace output from ffmpeg, bitstream filters are disabled anyway when using empty_moov:
[mp4 @ 0x56177b989200] Empty MOOV enabled; disabling automatic bitstream filtering

from beamcoder.

I'm not sure if this is relevant, but I did just notice that muxer.ctx_flags.UNSEEKABLE is false. I can't seem to set this from the javascript code though.

from beamcoder.

There is currently no 'setter' for muxer.ctx_flags. Reading the flag description it seems unlikely this is causing your trouble though?

from beamcoder.

Something is still not right, and i'm getting the same thing described above. Outputting from a plain muxer to file works, but from muxerstream to file produces a non-playable file. At least if you are muxing video into mp4. Anyone figure out what is going on here?

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Ok, revisited this today. I managed to fix the muxerstream, but I'm not exactly sure of the root cause. I fixed by changing the buffer length in adapter.h. Looks like it is set to low. If i increase this to say, 4096, I get playable output and muxerstream seems to work correctly. There must be some kind of padding that gets added to the avio_context (in libav) when write() fills the buffer? I'm not sure, but with the default value of 1024 you WILL get garbled output. I would like to add some logging to announce when new data arrives from libav with no buffer space left to store it since that will break any streamed output as we have seen here.

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