Zitat von Ross Finlayson <finlay...@live555.com>:
I am trying to build a small program which converts a previously
recorded H.264 elementary stream (which works fine) to a viewable
MP4-file.
I tried it using the QuickTimeFileSink but it seems to need a
MediaSession-object which seems to be highly dependend on an actual
RTP-Connection (which I dont have anymore at this moment).
Yes - as you noted, the current "QuickTimeFileSink" code depends upon
having a "MediaSession" object (that has one or more "MediaSubsession"
objects, each representing an input RTP stream).
You might be able to use some of the existing code in a new class
(which you would write) that could do what you want. But I suspect
that your best choice may be to use some other application - e.g., VLC
- to transcode your file.
At the moment I am using MP4Box (and also tried VLC) to convert the
captured streams to MP4-files (according to Etienne's hint, thx for
that :)), but only about 1 out of 10 streams captured with openRTSP
convert fine. Since MP4Box and VLC have the same problem while
converting I think it is a problem with openRTSP somehow dumping
corrupted stream data to disk.
I dumped the streams from a network camera using the following command-line:
openRTSP -v -w 640 -h 360 -f 25 -B 2000000 -b 2000000 -u admin mypwd
rtsp://192.168.0.75/h264 > myrawvideo.h264
So something has to be different in the stream dump that works in
comparsion to the others. One thing I noticed is:
All captured files do begin with the start marker "0x00 0x00 0x00
0x01", but the next following byte is 0x47 when it is a
non-convertable file and is 0x67 when it is a convertable file. I
tried capturing streams with VLC instead of openRTSP and they all
convert fine and they all have 0x67 after the start marker so I really
think it is somehow related to that.
Did I miss an important command-line-option or is it a bug with
openRTSP or maybe some other problem?
I could of course upload the working and the non-working file capture
for comparison if needed.
Big thanks for help!
Robin
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