[FFmpeg-user] capture mpeg2 from dvdlast
Flumotion Support
support at flumotion.com
Fri Nov 23 20:06:04 EET 2018
Hello
Soory for my mistake , here you have a new capture on mpeg without
converting the original stream.
https://drive.google.com/file/d/19oxeXOLdWMcHWZagIsHFX2azO0bhAPjp/view?usp=sharing
Thanks in advance
Best regards
On Fri, Nov 23, 2018 at 6:51 PM Micael Silva <micaelsilva at gmail.com> wrote:
> On Fri, Nov 23, 2018 at 1:02 PM Javier Fuentes <jfuentes at flumotion.com>
> wrote:
>
> > Hello everybody
> >
> > Sorry for my delay in reply in my response.
> > 1)I have attached a link for a small section of the flow that I capture
> >
> >
> https://drive.google.com/file/d/1c7IwXuu9GLMDo70A8gRyy1pUKntgxrM0/view?usp=sharing
> >
> > 2) I catpure multiple dvb-t or dvb-s signal with dvblast and his outgoing
> > are rtp, then I use the rpt to transcoding the signal with ffmpeg mp2g to
> > h264 and audio to aac. and republish it to my server.
> >
> > Thanks a lot for your help.
> > Best regards
> >
> > On Fri, Nov 23, 2018 at 3:43 PM Javier Fuentes <jfuentes at flumotion.com>
> > wrote:
> >
> > > Hello everybody
> > >
> > > Sorry for my delay in reply in my response.
> > > 1)I have attached a small section of the flow that I capture
> > > 2) I catpure multiple dvb-t or dvb-s signal with dvblast and his
> outgoing
> > > are rtp, then I use the rpt to transcoding the signal with ffmpeg mp2g
> to
> > > h264 and audio to aac. and republish it to my server.
> > >
> > > Thanks a lot for your help.
> > > Best regards
> > >
> > > On Thu, Nov 22, 2018 at 5:49 PM Carl Eugen Hoyos <ceffmpeg at gmail.com>
> > > wrote:
> > >
> > >> 2018-11-22 17:36 GMT+01:00, Javier Fuentes <jfuentes at flumotion.com>:
> > >> > Hello Everybody
> > >> >
> > >> >
> > >> > I have this ffmpeg command
> > >> > ffmpeg -i rtp://127.0.0.1:6000 -map 0:4 -map 0:2 -vcodec libx264
> -b:v
> > >> 1500k
> > >> > -s 720x576 -acodec aac -ab 128k -ac 2 -ar 48000 -r 25 -f flv
> > >> > rtmp://encoder....
> > >> >
> > >> > I have a lot of errors when i start capture a mpeg2 signal, and
> after
> > a
> > >> > while the capture starts to fail
> > >> >
> > >> > Thanks a lot for your help
> > >> > Best regards
> > >> >
> > >> > My log
> > >> > ffmpeg version git-2018-11-12-ae43235 Copyright (c) 2000-2018 the
> > FFmpeg
> > >> > developers
> > >> > built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
> > >> > configuration: --prefix=/root/ffmpeg_build
> > >> > --extra-cflags=-I/root/ffmpeg_build/include
> > >> > --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin
> > >> > --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac
> > >> > --enable-libmp3lame --enable-libvpx --enable-libx264
> > >> --enable-libfreetype
> > >>
> > >> > --enable-libspeex --enable-libtheora --enable-libass
> --enable-avfilter
> > >> > --enable-pthreads --enable-decoder=mpeg4 --enable-decoder=mpegvideo
> > >> > --enable-parser=mpeg4video --enable-parser=mpegvideo
> > >> > --enable-muxer=mpeg2video --enable-muxer=mp4 --enable-muxer=h264
> > >> > --enable-demuxer=h264 --enable-parser=ac3 --enable-parser=h261
> > >> > --enable-parser=vc1 --enable-decoder=aac --enable-parser=aac
> > >> > --enable-demuxer=aac --enable-demuxer=vc1 --enable-decoder=h264
> > >> > --enable-parser=h264 --enable-demuxer=h264 --enable-muxer=h264
> > >>
> > >> While this is probably unrelated, these unused options make
> > >> the issue needlessly harder to debug...
> > >>
> > >> > libavutil 56. 23.101 / 56. 23.101
> > >> > libavcodec 58. 39.100 / 58. 39.100
> > >> > libavformat 58. 22.100 / 58. 22.100
> > >> > libavdevice 58. 6.100 / 58. 6.100
> > >> > libavfilter 7. 43.100 / 7. 43.100
> > >> > libswscale 5. 4.100 / 5. 4.100
> > >> > libswresample 3. 4.100 / 3. 4.100
> > >> > libpostproc 55. 4.100 / 55. 4.100
> > >> > [mpeg2video @ 0x2befc40] Invalid frame dimensions 0x0.
> > >> > Last message repeated 13 times
> > >> > Input #0, rtp, from 'rtp://127.0.0.1:6000':
> > >> > Duration: N/A, start: 51639.509822, bitrate: N/A
> > >> > Program 493
> > >> > Metadata:
> > >> > service_name : Clan
> > >> > service_provider: RTVE
> > >> > Stream #0:4: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
> > >> > yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25
> tbr,
> > >> 90k
> > >> > tbn, 50 tbc
> > >> > Stream #0:0(spa,spa,qaa): Subtitle: dvb_teletext ([6][0][0][0] /
> > >> 0x0006)
> > >> > Stream #0:1(spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
> > >> stereo,
> > >> > s16p, 128 kb/s
> > >> > Stream #0:3(qaa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
> > >> stereo,
> > >> > s16p, 128 kb/s
> > >> > Stream #0:2(spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
> > >> mono,
> > >> > s16p, 96 kb/s (visual impaired) (descriptions)
> > >> > Stream #0:5(spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
> > >> > Stream #0:6(qaa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
> > >> > Stream mapping:
> > >> > Stream #0:4 -> #0:0 (mpeg2video (native) -> h264 (libx264))
> > >> > Stream #0:2 -> #0:1 (mp2 (native) -> aac (native))
> > >> > Press [q] to stop, [?] for help
> > >> > [libx264 @ 0x2c50340] using SAR=64/45
> > >> > [libx264 @ 0x2c50340] using cpu capabilities: none!
> > >> > [libx264 @ 0x2c50340] profile High, level 3.0, 4:2:0, 8-bit
> > >> > [libx264 @ 0x2c50340] 264 - core 157 - H.264/MPEG-4 AVC codec -
> > Copyleft
> > >> > 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1
> > ref=3
> > >> > deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
> psy_rd=1.00:0.00
> > >> > mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
> > >> deadzone=21,11
> > >> > fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2
> > >> > sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
> > >> > constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0
> direct=1
> > >> > weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40
> > >> > intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=1500
> > ratetol=1.0
> > >> > qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
> > >> > Output #0, flv, to 'rtmp://
> > >> encoder-cg10.bt.bcn.flumotion.net:1935/yuvod/clan
> > >> > ':
> > >> > Metadata:
> > >> > encoder : Lavf58.22.100
> > >> > Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
> > yuv420p,
> > >> > 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 1500 kb/s, 25 fps, 1k tbn, 25
> > tbc
> > >> > Metadata:
> > >> > encoder : Lavc58.39.100 libx264
> > >> > Side data:
> > >> > cpb: bitrate max/min/avg: 0/0/1500000 buffer size: 0
> vbv_delay:
> > -1
> > >> > Stream #0:1(spa): Audio: aac (LC) ([10][0][0][0] / 0x000A),
> 48000
> > >> Hz,
> > >> > stereo, fltp, 128 kb/s (visual impaired) (descriptions)
> > >> > Metadata:
> > >> > encoder : Lavc58.39.100 aac
> > >> > [rtp @ 0x2b9ab40] max delay reached. need to consume packet
> > >> > bitrate=1458.5kbits/s speed=1.02x
> > >> > [rtp @ 0x2b9ab40] RTP: missed 13 packets
> > >>
> > >> Can you try to record the network stream to allow us to reproduce?
> > >> Why is rtp input from the local system necessary?
> > >>
> > >> Carl Eugen
> > >> _______________________________________________
> > >> ffmpeg-user mailing list
> > >> ffmpeg-user at ffmpeg.org
> > >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
> > >>
> > >> To unsubscribe, visit link above, or email
> > >> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
> > >
> > >
> > >
> > > --
> > >
> > >
> > > Javier Fuentes
> > > Flumotion Services S.A.
> > >
> > > Avda. Diagonal 579-587 7º
> > > 08021 Barcelona - Spainwww.flumotion.com
> >
>
> I see you don't quite understand what I asked (capture the stream, but not
> convert it to h264 on that pass) but from the file is possible to tell that
> the problem probably is what I think it is. It starts well because ffmpeg
> makes some buffer to analyze the media type on start but when it runs out
> the frame dropping starts. The fact that the original codec there is MPEG2
> delays that dropping some time, here we use H264 for transmission and it
> makes the same scenario a little bit fast and worst.
>
> I'm building a test scenario here for some tests and I'll report the
> findings.
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--
Flumotion Support
Flumotion Services S.A.
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