Hello,
I've observed a big problem with one of my sources that i have. It is
H264 video data and AAC audio (48 khz).
Below is a file that is a dump of part of a stream from this source
which i try to stream to Youtube LIVE and only what i get is a sound
with a lot of cracking noise and clear video.
Please note that file is perfectly playable using VLC and ffplay in
every version that i tried (many of them) also with latest GIT compiled.
I tried x64 and ARM and same happens.
This is what i tried:
ffmpeg -re -i testAudio.flv -vcodec copy -acodec copy -f flv
-rtmp_live 1 rtmp://x.rtmp.youtube.com/live2/{KEY} = Cracking NOISE
ffmpeg -re -i testAudio.flv -vcodec libx264 -acodec libmp3lame -f flv
-strict experimental -rtmp_live 1 rtmp://x.rtmp.youtube.com/live2/{KEY}
= CRACKING NOISE
ffmpeg -re -i testAudio.flv -vcodec copy -acodec aac -ac 2 -ar 44100
-f flv -rtmp_live 1 rtmp://x.rtmp.youtube.com/live2/{KEY} = Cracking NOISE
ffplay testAudio.flv = Plays well
This behaviour is not happening on Facebook Live Streaming NOR private
RTMP server, only YouTube Live.
I've also wrote a test app using lib_srs and this file publishes well on
YT without cracking sound.
I tried switching Audio Channels Count, Audio Sampling Rate, Codec (AAC,MP3)
This happens only with this file, others works well.
I've checked AAC frames, H264 NAL structure of file - nothing wierd
inside. To be more pricese i dumped this file from RTSP stream from a
device using acodec copy and vcodec copy. Same happens when i try to use
RTSP as a source from this device.
Source file: http://zink.com.pl/testAudio.flv
Any help?
Marcin Wozniak
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