Hello,
I am using Libav to remux an mpegts stream into an FLV stream and
publishing the stream to an RTMP server. The TS contains H.264 and AAC.
Whenever the encoded video is progressive, the remuxing and streaming
works great. Whenever the encoded video is interlaced and I pull down
the stream from the server, VLC fails to play the stream. Our in-house
decoder is able to play the stream, but there are artifacts on the
parts of the video where there is motion. I should note that we use an
in-house encoder, and can confirm that it encodes interlaced content
correctly.
I tried doing the same remuxing setup with avconv, and it seems to
handle the interlaced content properly:
avconv -f mpegts -i .ts -c:v copy -c:a copy -f flv rtmp://
I also tried taking the RTMP server out of the picture for both my app
and avconv and wrote the remuxed stream to file. The results are the
same.
I tried to make my app mimic the setup that avconv uses, but it's
tough to tell exactly what the difference is since avconv is fairly
large and built to support everything.
So, I was wondering if anyone could tell me how interlaced video needs
to be handled differently than progressive. Are there some fields I
need to set in the context structures? Filter to use? Limitation of
the FLV muxing perhaps?
Thanks,
Alexander Anderson
P.S. Sorry if the confidentiality statement is appended. It's automatic
for my company email and I can't prevent it.
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