[FFmpeg-trac] #2748(undetermined:open): Inconsistent UDP output packet size
FFmpeg
trac at avcodec.org
Tue Feb 25 00:02:05 CET 2014
#2748: Inconsistent UDP output packet size
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Reporter: lancey | Owner:
Type: defect | Status: open
Priority: normal | Component:
Version: git-master | undetermined
Keywords: mpegts udp | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by caseynielson):
You may reproduce the problem using the command line supplied in the
original description.
ffmpeg -re -i test.ts -c:v copy -c:a copy -f mpegts
udp://239.101.102.103:3001?pkt_size=1316
test.ts should contain valid MPEG TS content.
The problem is observed using your favorite packet trace utility (I use
tcpdump but wireshark may be easier to use).
All IP UDP packets should be 1316 bytes (7 MPEG TS packets at length of
188 bytes). As noted earlier ffmpeg occasionally outputs IP UDP packets
containing fewer MPEG TS packets. The example above shows two packets with
length 752 bytes ( 4 MPEG TS packets) and 1 packet of length 188 bytes (1
MPEG TS packet).
--
Ticket URL: <https://trac.ffmpeg.org/ticket/2748#comment:10>
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