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Sur d’autres sites (5106)

  • Can't play rtp stream from ffmpeg/avconv, no data received

    6 mars 2014, par Foo Barazz

    I started avserver on my Raspberry Pi, webcam attached I read from /dev/video0 with

    pi@raspberrypi $ avconv -f video4linux2 -i /dev/video0 -vcodec mpeg2video -r 25 - pix_fmt yuv420p -me_method epzs -b 2600k -bt 256k -f rtp rtp://192.168.0.124:8090

    avconv version 0.8.6-6:0.8.6-1+rpi1, Copyright (c) 2000-2013 the Libav developers
     built on Mar 31 2013 13:58:10 with gcc 4.6.3
    [video4linux2 @ 0x17c1720] Estimating duration from bitrate, this may be inaccurate
    Input #0, video4linux2, from '/dev/video0':
     Duration: N/A, start: 615.594215, bitrate: 36864 kb/s
       Stream #0.0: Video: rawvideo, yuyv422, 320x240, 36864 kb/s, 30 tbr, 1000k tbn, 30 tbc
    [buffer @ 0x17c16e0] w:320 h:240 pixfmt:yuyv422
    [avsink @ 0x17c2f00] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
    [scale @ 0x17c34c0] w:320 h:240 fmt:yuyv422 -> w:320 h:240 fmt:yuv420p flags:0x4
    Output #0, rtp, to 'rtp://192.168.0.124:8090':
     Metadata:
       encoder         : Lavf53.21.1
       Stream #0.0: Video: mpeg2video, yuv420p, 320x240, q=2-31, 2600 kb/s, 90k tbn, 25 tbc
    Stream mapping:
     Stream #0:0 -> #0:0 (rawvideo -> mpeg2video)
    SDP:
    v=0
    o=- 0 0 IN IP4 127.0.0.1
    s=No Name
    c=IN IP4 192.168.0.124
    t=0 0
    a=tool:libavformat 53.21.1
    m=video 8090 RTP/AVP 32
    b=AS:2600

    Press ctrl-c to stop encoding
    frame=  576 fps= 25 q=2.0 size=    2133kB time=23.00 bitrate= 759.8kbits/s dup=390 drop=0    
    frame=  590 fps= 25 q=2.0 size=    2191kB time=23.56 bitrate= 762.0kbits/s dup=400 drop=0    
    frame= 1320 fps= 25 q=2.0 size=    4932kB time=52.76 bitrate= 765.8kbits/s dup=908 drop=0
    ...

    Seems to work fine, it reads data from the webcam.

    Now I'm trying to simply play with ffplay from my Mac with

    $ ffplay rtp://192.168.0.124:8090
    ffplay version 1.2.4 Copyright (c) 2003-2013 the FFmpeg developers
     built on Mar  1 2014 15:18:21 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1/include/openjpeg-1.5 '
     libavutil      52. 18.100 / 52. 18.100
     libavcodec     54. 92.100 / 54. 92.100
     libavformat    54. 63.104 / 54. 63.104
     libavdevice    54.  3.103 / 54.  3.103
     libavfilter     3. 42.103 /  3. 42.103
     libswscale      2.  2.100 /  2.  2.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  2.100 / 52.  2.100
       nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0  
       nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0  
       nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
       ...

    The video doesn't open and it seems to not reading any data from the Raspberry Pi.

    I use the default configuration for avserver.
    The webcam is definitely working as I managed to just write out images with avconv from it.

    What did I miss ?

  • ffmpeg "Option preset not found."

    2 février 2015, par PiTheNumber

    I am trying to convert a .mpg to .flv with ffmpeg. On other servers I got it working but here with the ffmpeg clone (avconv) it just does not do it.

    Originally I was working with libfaac and preset fastfirstpass but thats not available in this build so I switched to the experimental acc and preset libx264-fast_firstpass :

    $ /usr/bin/ffmpeg -i /data/upload/videos/original/150128_Test_731_9d5b83.mpg
     -strict experimental -acodec aac -ab 128k -ar 44100 -vcodec libx264 -pass 1
     -pre libx264-fast_firstpass -b 512k -s 360x204
     -f flv /data/upload/videos/encoded/150129_Test_731_54f06a.flv

    avconv version 9.16-6:9.16-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers
     built on Aug 10 2014 18:16:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    [mpeg @ 0xc87de0] max_analyze_duration reached
    Guessed Channel Layout for  Input Stream #0.1 : stereo
    Input #0, mpeg, from '/data/upload/videos/original/150128_Test_731_9d5b83.mpg':
     Duration: 00:01:00.12, start: 0.989978, bitrate: 4814 kb/s
       Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x406 [PAR 406:405 DAR 16:9], 104857 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
       Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 224 kb/s
    [libx264 @ 0xc8b4c0] using SAR=136/135
    [libx264 @ 0xc8b4c0] MB rate (26910000) > level limit (2073600)
    [libx264 @ 0xc8b4c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    [libx264 @ 0xc8b4c0] profile Main, level 5.2
    [libx264 @ 0xc8b4c0] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 lookahead_threads=1 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
    Option preset not found.

    What does the error in the last line mean ?

    I already made sure the preset libx264-fast_firstpass.avpreset exists in /usr/share/avconv/ and if I change it to invalid ffmpeg complains with Preset invalid specified for stream 0:0, but could not be opened., so the preset is correct.

    Google does provide two results for this error. This chatlog and it’s pastebin about live streaming with the solution to add -f flv and some russian page. Nothing helped.

    Any advice ?

  • Why ffmpeg convert only the first frame of my animated gif ? [duplicate]

    23 novembre 2016, par Cyriltra

    This question already has an answer here :

    My animated gif is around 37mo and last for around 10sec. I use the following command on debian to convert it to .mp4 :

    avconv -i test2_37m2.gif -pix_fmt yuv420p -vf \"scale=trunc(iw/2)*2:trunc(ih/2)*2\" test2_37m2_mp4.mp4 2>&1

    The result is a 14kb .mp4 which is just a static frame (the first one) of the gif. Why ?

    here is the output log of ffmpeg / avconv

    avconv version 0.8.18-6:0.8.18-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
    built on Oct 4 2016 17:59:06 with gcc 4.7.2
    Input #0, image2, from '/var/www/clients/client1/web1/web/test/gif/test2_37m2.gif':
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: gif, pal8, 640x360, 25 tbr, 25 tbn, 25 tbc
    Incompatible pixel format 'pal8' for codec 'libx264', auto-selecting format 'yuv420p'
    [buffer @ 0x1a4a820] w:640 h:360 pixfmt:pal8
    [avsink @ 0x1a4aac0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
    [scale @ 0x1a4ae20] w:640 h:360 fmt:pal8 -> w:640 h:360 fmt:yuv420p flags:0x4
    [libx264 @ 0x1a4a060] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
    [libx264 @ 0x1a4a060] profile Main, level 3.0
    [libx264 @ 0x1a4a060] 264 - core 123 r2189 35cf912 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
    Output #0, mp4, to '/var/www/clients/client1/web1/web/test/gif/test2_37m2_mp4.mp4':
    Metadata:
    encoder : Lavf53.21.1
    Stream #0.0: Video: libx264, yuv420p, 640x360, q=-1--1, 25 tbn, 25 tbc
    Stream mapping:
    Stream #0:0 -> #0:0 (gif -> libx264)
    Press ctrl-c to stop encoding
    frame= 1 fps= 0 q=28.0 Lsize= 13kB time=10000000000.00 bitrate= 0.0kbits/s
    video:12kB audio:0kB global headers:0kB muxing overhead 6.292888%
    [libx264 @ 0x1a4a060] frame I:1 Avg QP:27.23 size: 12119
    [libx264 @ 0x1a4a060] mb I I16..4: 49.2% 0.0% 50.8%
    [libx264 @ 0x1a4a060] coded y,uvDC,uvAC intra: 68.7% 45.8% 3.4%
    [libx264 @ 0x1a4a060] i16 v,h,dc,p: 22% 25% 22% 31%
    [libx264 @ 0x1a4a060] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 28% 21% 4% 5% 4% 9% 3% 7%
    [libx264 @ 0x1a4a060] i8c dc,h,v,p: 57% 29% 13% 1%
    [libx264 @ 0x1a4a060] kb/s:2423.80

    Thank you