Estou tentando fazer isso na semana agora sem sucesso, O que estou tentando fazer é transcodificar o vídeo da fonte de transmissão ao vivo e reduzi-lo com o FFmpeg, mas toda vez que eu começo a transcodificá-lo, transmito por ~ 11 segundos e paro.
O último comando que tentei:
ffmpeg -re -i 'http://source.com/1034.ts' -preset ultrafast http://localhost:2052/feed1.ffm
Eu tentei baixar o arquivo .ts com IDM e terminar de baixar o arquivo exatamente no ~ 12 Sec que o FFmpeg parou de codificar trans nele.
Isso significa que o FFmpeg faz o download desse arquivo como um segmento e não continua lendo o vídeo de origem? Como os players de vídeo costumam fazer. By the way, eu tentei com a fonte com o VLC player e ele não parou de reproduzir o mesmo vídeo de origem.
Eu decidi passar o comando FFmpeg através do arquivo de configuração do FFserver ffserver.conf
Launch ffmpeg -i 'http://source.com/1.ts' -copyinkf -codec copy
O stream funciona bem por um tempo, mas depois de testar algumas fontes, noto que é difícil transcodificar vídeos HD.
Eu acho que o problema com o meu servidor VPS KVM sendo muito limitado CPU e RAM (128MB apenas)! Como tentei usar ultrafast preset, mas não resolvi o problema, outra coisa , percebo quando habilito AVOptionVideo crf em ffserver.conf trans-coding é executado sem problemas sem que a taxa de quadros caia .
Las meu servidor usa Xeon L5520 CPU que está desatualizado CPU especialmente eu gout 1/4 poder de V single core (se eles contam HT será 1/8 do núcleo real): (
== Atualizar ==
Parece que o problema foi com a fonte de vídeo que eu uso, o servidor deles estava sob carga pesada e o servidor perdeu a conexão após alguns segundos, nada de errado com meu comando ou com o FFmpeg.
# vlc -I dummy 'https://source.com/1034.ts' --sout '#standard{access=http,mux=flv,dst=localhost:2052}'
VLC media player 2.2.8 Weatherwax (revision 2.2.7-14-g3cc1d8cba9)
[09d3fdf0] pulse audio output error: PulseAudio server connection failure: Connection refused
[09d279c0] core interface error: no suitable interface module
[09c9b8f8] core libvlc error: interface "globalhotkeys,none" initialization failed
[09d279c0] dbus interface error: Failed to connect to the D-Bus session daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
[09d279c0] core interface error: no suitable interface module
[09c9b8f8] core libvlc error: interface "dbus,none" initialization failed
[09d279c0] dummy interface: using the dummy interface module...
[b5e04ae0] access_output_http access out: Consider passing --http-host=IP on the command line instead.
[b5e38ab8] ts demux: MPEG-4 descriptor not found for pid 0x101 type 0xf
[b5e90ae0] packetizer_mpeg4audio decoder: AAC channels: 2 samplerate: 48000
[flv @ 0xb5e33b40] dimensions not set
[b5e06360] avformat mux error: could not write header: Invalid argument
[b5e88ef0] core decoder error: cannot continue streaming due to errors
[b5e90ae0] core decoder error: cannot continue streaming due to errors
Aqui saída com -loglevel verbose
:~# ffmpeg -i http://source.com/1.ts -copyinkf -codec copy -loglevel verbose http://127.0.0.1:8090/feed1.ffm
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/i386-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/i386-linux-gnu
libavutil 54. 20.100 / 54. 20.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 25.101 / 56. 25.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.102 / 5. 11.102
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Invalid UE golomb code
Last message repeated 2 times
Input #0, mpegts, from 'http://source.com/1.ts':
Duration: N/A, start: 30472.768167, bitrate: N/A
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 960x540 (960x544) [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 105 kb/s
[graph 0 input from stream 0:1 @ 0x971f2c0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[audio format for output stream 0:0 @ 0x9844de0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:0'
[auto-inserted resampler 0 @ 0x97115e0] ch:2 chl:stereo fmt:fltp r:48000Hz -> ch:1 chl:mono fmt:fltp r:22050Hz
[graph 1 input from stream 0:0 @ 0x96f5d00] w:960 h:540 pixfmt:yuv420p tb:1/90000 fr:50/1 sar:1/1 sws_param:flags=2
[scaler for output stream 0:1 @ 0x96f5e80] w:352 h:240 flags:'0x4' interl:0
[scaler for output stream 0:1 @ 0x96f5e80] w:960 h:540 fmt:yuv420p sar:1/1 -> w:352 h:240 fmt:yuv420p sar:40/33 flags:0x4
Output #0, ffm, to 'http://127.0.0.1:8090/feed1.ffm':
Metadata:
creation_time : now
encoder : Lavf56.25.101
Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 64 kb/s
Metadata:
encoder : Lavc56.26.100 wmav2
Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 352x240 [SAR 40:33 DAR 16:9], q=2-31, 256 kb/s, 50 fps, 1000k tbn, 15 tbc
Metadata:
encoder : Lavc56.26.100 msmpeg4
Stream mapping:
Stream #0:1 -> #0:0 (aac (native) -> wmav2 (native))
Stream #0:0 -> #0:1 (h264 (native) -> msmpeg4v3 (msmpeg4))
Press [q] to stop, [?] for help
Invalid UE golomb code
*** dropping frame 3 from stream 1 at ts 1
Last message repeated 1 times
[msmpeg4 @ 0x970f060] warning, clipping 1 dct coefficients to -127..127
*** dropping frame 41 from stream 1 at ts 39me=00:00:02.73 bitrate= 311.7kbits/s dup=0 drop=88
Last message repeated 1 times
[h264 @ 0x9844a00] error while decoding MB 58 12, bytestream -5
[h264 @ 0x9844a00] concealing 1311 DC, 1311 AC, 1311 MV errors in B frame
*** dropping frame 53 from stream 1 at ts 52
No more output streams to write to, finishing.
frame= 55 fps= 42 q=4.3 Lsize= 152kB time=00:00:03.66 bitrate= 339.6kbits/s dup=0 drop=119
video:116kB audio:26kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.760316%
Input file #0 (http://source.com/1.ts):
Input stream #0:0 (video): 174 packets read (220322 bytes); 174 frames decoded;
Input stream #0:1 (audio): 156 packets read (36657 bytes); 156 frames decoded (159744 samples);
Total: 330 packets (256979 bytes) demuxed
Output file #0 (http://127.0.0.1:8090/feed1.ffm):
Output stream #0:0 (audio): 72 frames encoded (73383 samples); 72 packets muxed (26712 bytes);
Output stream #0:1 (video): 55 frames encoded; 55 packets muxed (119080 bytes);
Total: 127 packets (145792 bytes) muxed
Aqui insira as informações do arquivo URL depois de baixá-lo para o meu PC com o IDM
General
ID : 1 (0x1)
Complete name : D:.ts
Format : MPEG-TS
File size : 256 KiB
Duration : 2 s 520 ms
Overall bit rate mode : Variable
Overall bit rate : 788 kb/s
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Codec ID : 27
Duration : 2 s 680 ms
Width : 960 pixels
Height : 540 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Audio
ID : 257 (0x101)
Menu ID : 1 (0x1)
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Muxing mode : ADTS
Codec ID : 15
Duration : 2 s 69 ms
Bit rate mode : Variable
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Delay relative to video : -12 ms
Menu
ID : 4096 (0x1000)
Menu ID : 1 (0x1)
Duration : 2 s 520 ms
List : 256 (0x100) (AVC) / 257 (0x101) (AAC)
Service name : Service01
Service provider : FFmpeg
Service type : digital television
Tags ffmpeg video-streaming codec