[Live-devel] Hinting the audio track of file created by openRTSP

[tpollock1958 at aol.com]

I'm having a problem hinting the audio track of a file created by
openRTSP.? First of all, I was never able to get the -H argument to
work, so I'm trying to hint the file with mp4creator.? Here's the setup
I'm using:


VLC -> Darwin Streaming Server -> openRTSP -> file, then hint with mp4creator

Here are the details (using mp4info) of the file I want to stream:

mp4info version 1.6.1
src.mp4:
Track??? Type? ?? Info

1??????? audio??? MPEG-4 AAC LC, 59.141 secs, 256 kbps, 44100 Hz
2??????? video??? MPEG-4 Adv Simple at L3, 59.166 secs, 512 kbps, 320x240 @ 30.000338 fps


In order to generate an sdp file I first run VLC with these command line arguments:

vlc src.mp4 --sout-rtp-dst="127.0.0.1" --sout-rtp-ttl="127" --sout-rtp-sdp="file://c:\\foo
.sdp"


I then copy foo.sdp to the Darwin media directory.

Next, with Darwin running, I launch openRTSP with these command arguments:

-n -w 320 -h 240 -f 30 -4 rtsp://localhost/foo.sdp

(I've slightly modified openRTSP to close the mp4 file it's writing to when it detects the stream has stopped.)


Finally, I run VLC with the same command line arguments, except without the "--sout-rtp-sdp=" argument:

vlc src.mp4 --sout-rtp-dst="127.0.0.1" --sout-rtp-ttl="127"


The file is streamed, and openRTSP creates a file (dst.mp4) with an
audio and video track.? Here are the details of the file generated by
openRTSP:

dst.mp4:
Track??? Type?? ? Info

1 ? ? ?? audio??? AAC from .mov, 58.537 secs, 256 kbps, 44100 Hz
2??????? video??? MPEG-4 Unknown Profile(255), 58.533 secs, 872 kbps, 320x240 @ 30.000171 fps


I can play dst.mp4 with QuickTime.

Using mp4creator, I can hint the video track, but not the audio track.? That is the issue here.

If I open dst.mp4 with QuickTime Pro and export it as a MPEG-4 file, then examine it with mp4info, it looks like this:


mp4info version 1.6.1
exported_dst.mp4:
Track?? Type??? Info
1?????? audio?? MPEG-4 AAC LC, 58.537 secs, 128 kbps, 44100 Hz

2?????? video?? MPEG-4 Simple @ L1, 58.533 secs, 64 kbps, 160x120 @ 15.000085 fps

I can hint the audio track of exported_dst.mp4.


Any ideas how to get openRTSP to generate an 'MPEG-4 AAC LC' audio track?

Tim
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