[FFmpeg-trac] #3127(avformat:new): Video stream publishing via RTMPT

[FFmpeg]

#3127: Video stream publishing via RTMPT
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             Reporter:  goodvinj    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by goodvinj):

 I've found that "ffurl_read" can return 0 by the specification:
 {{{
 /**
  * Read up to size bytes from the resource accessed by h, and store
  * the read bytes in buf.
  *
  * @return The number of bytes actually read, or a negative value
  * corresponding to an AVERROR code in case of error. A value of zero
  * indicates that it is not possible to read more from the accessed
  * resource (except if the value of the size argument is also zero).
  */
 int ffurl_read(URLContext *h, unsigned char *buf, int size);
 }}}
 So the right patch must check "ffurl_read" result on 0, and the old patch
 is invalid.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3127#comment:7>
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