On Fri, Dec 22, 2017 at 11:00:34PM +0000, Aman Gupta wrote: > ffmpeg | branch: master | Aman Gupta <a...@tmm1.net> | Wed Oct 4 14:52:52 > 2017 -0700| [b7d6c0cd48dac7869b9e6803e2d47d05a4fa373b] | committer: Aman Gupta > > avformat/hls: add http_persistent option > > This teaches the HLS demuxer to use the HTTP protocols > multiple_requests=1 option, to take advantage of "Connection: > Keep-Alive" when downloading playlists and segments from the HLS server. > > With the new option, you can avoid TCP connection and TLS negotiation > overhead, which is particularly beneficial when streaming via a > high-latency internet connection. > > Similar to the http_persistent option recently implemented in hlsenc.c > > Signed-off-by: Aman Gupta <a...@tmm1.net> > Signed-off-by: Anssi Hannula <anssi.hann...@iki.fi> > > > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b7d6c0cd48dac7869b9e6803e2d47d05a4fa373b > --- > > doc/demuxers.texi | 4 ++++ > libavformat/hls.c | 72 > +++++++++++++++++++++++++++++++++++++++++++++++++++---- > 2 files changed, 72 insertions(+), 4 deletions(-)
This causes ffmpeg to infinite loop with simplehttpd.py gdb --args ./ffmpeg_g -i http://127.0.0.1:7429/playlist.m3u8 -t 10 file-hls1.avi if i stop this, it seems stuck around here: #0 0x00007ffff02d0c5d in poll () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000737301 in ff_network_wait_fd (fd=4, write=0) at libavformat/network.c:82 #2 0x0000000000737378 in ff_network_wait_fd_timeout (fd=4, write=0, timeout=0, int_cb=0x21d9c10) at libavformat/network.c:94 #3 0x00000000007b3f73 in tcp_read (h=0x21d9be0, buf=0x21e2990 "GET /fileSequence001.ts HTTP/1.1\r\nUser-Agent: Lavf/58.3.100\r\nAccept: */*\r\nConnection: keep-alive\r\nHost: 127.0.0.1:7429\r\nIcy-MetaData: 1\r\n\r\n", size=4096) at libavformat/tcp.c:223 #4 0x0000000000653219 in retry_transfer_wrapper (h=0x21d9be0, buf=0x21e2990 "GET /fileSequence001.ts HTTP/1.1\r\nUser-Agent: Lavf/58.3.100\r\nAccept: */*\r\nConnection: keep-alive\r\nHost: 127.0.0.1:7429\r\nIcy-MetaData: 1\r\n\r\n", size=4096, size_min=1, transfer_func=0x7b3f23 <tcp_read>) at libavformat/avio.c:376 #5 0x000000000065334b in ffurl_read (h=0x21d9be0, buf=0x21e2990 "GET /fileSequence001.ts HTTP/1.1\r\nUser-Agent: Lavf/58.3.100\r\nAccept: */*\r\nConnection: keep-alive\r\nHost: 127.0.0.1:7429\r\nIcy-MetaData: 1\r\n\r\n", size=4096) at libavformat/avio.c:411 #6 0x00000000006a20a7 in http_getc (s=0x21e2980) at libavformat/http.c:574 #7 0x00000000006a2139 in http_get_line (s=0x21e2980, line=0x7fffffff5e20 "", line_size=4096) at libavformat/http.c:594 #8 0x00000000006a3bcd in http_read_header (h=0x21d97c0, new_location=0x7fffffff7f6c) at libavformat/http.c:1103 #9 0x00000000006a4942 in http_connect (h=0x21d97c0, path=0x7fffffff93b0 "/fileSequence001.ts", local_path=0x7fffffff93b0 "/fileSequence001.ts", hoststr=0x7fffffff83b0 "127.0.0.1:7429", auth=0x7fffffff87b0 "", proxyauth=0x7fffffff8bb0 "", new_location=0x7fffffff7f6c) at libavformat/http.c:1289 #10 0x00000000006a104c in http_open_cnx_internal (h=0x21d97c0, options=0x7fffffffb460) at libavformat/http.c:239 #11 0x00000000006a10fd in http_open_cnx (h=0x21d97c0, options=0x7fffffffb460) at libavformat/http.c:259 #12 0x00000000006a154a in ff_http_do_new_request (h=0x21d97c0, uri=0x21d4e10 "http://127.0.0.1:7429/fileSequence001.ts";) at libavformat/http.c:340 #13 0x000000000069390e in open_url_keepalive (s=0x21d0080, pb=0x21d3a10, url=0x21d4e10 "http://127.0.0.1:7429/fileSequence001.ts";) at libavformat/hls.c:612 #14 0x0000000000693c51 in open_url (s=0x21d0080, pb=0x21d3a10, url=0x21d4e10 "http://127.0.0.1:7429/fileSequence001.ts";, opts=0x21d83e0, opts2=0x22e0060, is_http=0x7fffffffbdf8) at libavformat/hls.c:663 #15 0x00000000006959c9 in open_input (c=0x21d2780, pls=0x21d2900, seg=0x21d4da0) at libavformat/hls.c:1179 #16 0x0000000000696502 in read_data (opaque=0x21d2900, buf=0x7fffeb4fa36c "", buf_size=32768) at libavformat/hls.c:1433 #17 0x00000000006551cc in read_packet_wrapper (s=0x21d3900, buf=0x7fffeb4fa36c "", size=32768) at libavformat/aviobuf.c:533 #18 0x000000000065545a in fill_buffer (s=0x21d3900) at libavformat/aviobuf.c:583 #19 0x0000000000655813 in avio_read (s=0x21d3900, buf=0x7fffffffd080 "", size=188) at libavformat/aviobuf.c:676 #20 0x0000000000655995 in ffio_read_indirect (s=0x21d3900, buf=0x7fffffffd080 "", size=188, data=0x7fffffffd060) at libavformat/aviobuf.c:711 #21 0x0000000000715d4b in read_packet (s=0x21d86e0, buf=0x7fffffffd080 "", raw_packet_size=188, data=0x7fffffffd060) at libavformat/mpegts.c:2462 #22 0x0000000000716076 in handle_packets (ts=0x22029a0, nb_packets=0) at libavformat/mpegts.c:2529 #23 0x0000000000716da8 in mpegts_read_packet (s=0x21d86e0, pkt=0x7fffffffd310) at libavformat/mpegts.c:2783 #24 0x00000000007c301d in ff_read_packet (s=0x21d86e0, pkt=0x7fffffffd310) at libavformat/utils.c:823 #25 0x00000000007c60eb in read_frame_internal (s=0x21d86e0, pkt=0x21d3a38) at libavformat/utils.c:1526 #26 0x00000000007c70dc in av_read_frame (s=0x21d86e0, pkt=0x21d3a38) at libavformat/utils.c:1723 #27 0x0000000000697ed8 in hls_read_packet (s=0x21d0080, pkt=0x7fffffffd6a0) at libavformat/hls.c:2033 #28 0x00000000007c301d in ff_read_packet (s=0x21d0080, pkt=0x7fffffffd6a0) at libavformat/utils.c:823 #29 0x00000000007c60eb in read_frame_internal (s=0x21d0080, pkt=0x7fffffffdaa0) at libavformat/utils.c:1526 #30 0x00000000007c70dc in av_read_frame (s=0x21d0080, pkt=0x7fffffffdaa0) at libavformat/utils.c:1723 #31 0x000000000043a872 in get_input_packet (f=0x22f80a0, pkt=0x7fffffffdaa0) at fftools/ffmpeg.c:4113 #32 0x000000000043ace1 in process_input (file_index=0) at fftools/ffmpeg.c:4236 #33 0x000000000043cbe0 in transcode_step () at fftools/ffmpeg.c:4583 #34 0x000000000043cd5c in transcode () at fftools/ffmpeg.c:4637 #35 0x000000000043d52d in main (argc=6, argv=0x7fffffffe3d8) at fftools/ffmpeg.c:4843 [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws. -- Plato
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