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Médias (1)
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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (64)
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Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
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Sur d’autres sites (10173)
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how to get precise video bit rate in a .ts file ?
26 juillet 2022, par Wang YilanI often use
ffprobe
to get video bitrates and audio bitrates, but when I usedffprobe
to get video bitrate of a .ts file, it seemed get wrong answers :

> ffprobe ts-5s/abs-Life_of_PI-01-05s-0.95-1.5-0.15.ts
ffprobe version N-107320-g3354f8695c Copyright (c) 2007-2022 the FFmpeg developers
 built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
 configuration: --enable-version3 --enable-libvmaf --enable-libx264 --enable-libx265 --enable-libvpx --enable-x86asm --enable-shared --disable-static --enable-gpl --enable-postproc --enable-hardcoded-tables --enable-pthreads --enable-pic --enable-zlib --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --extra-libs=-lcjson
 libavutil 57. 27.100 / 57. 27.100
 libavcodec 59. 36.100 / 59. 36.100
 libavformat 59. 26.100 / 59. 26.100
 libavdevice 59. 6.100 / 59. 6.100
 libavfilter 8. 41.100 / 8. 41.100
 libswscale 6. 6.100 / 6. 6.100
 libswresample 4. 6.100 / 4. 6.100
 libpostproc 56. 5.100 / 56. 5.100
Input #0, mpegts, from 'ts-5s/abs-Life_of_PI-01-05s-0.95-1.5-0.15.ts':
 Duration: 00:00:05.02, start: 1.472511, bitrate: 1423 kb/s
 Program 1
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x688, 23.98 fps, 23.98 tbr, 90k tbn
 Stream #0:1[0x101](und): Audio: mp2 ([3][0][0][0] / 0x0003), 44100 Hz, stereo, fltp, 384 kb/s



it seemed that the bitrate is 1423k,but when I used
bitrate viewer
to get this result, it is 952k :


And 1423k-384k=1039k, it cannot match the result of bitrate-viewer, neither.


So my question are :


- 

- what result is the correct result of this .ts file ?
- Can I get this result in batches ? (using terminal commands or others)






many thanks.


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FFMPEG HTTP Stream error, failed : Connection refused
17 juillet 2022, par Halo GassI tried to stream a video frame from opencv to network using MPEG-Dash, HLS, or RTSP via FFMPEG, but everytime I tried everything, it always throw "Connection Error, Connection Refused" even streaming to 127.0.0.1.


Here the code for testing :


import subprocess
import cv2
rtmp_url = "rtmp://127.0.0.1:1935/stream/pupils_trace"

# webcamera is 0, also you can set a video file name instead, for example "/home/user/demo.mp4"
path = 0
cap = cv2.VideoCapture(path)

# gather video info to ffmpeg
fps = int(cap.get(cv2.CAP_PROP_FPS))
width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))

# command and params for ffmpeg
command = ['ffmpeg',
 '-y',
 '-f', 'rawvideo',
 '-vcodec', 'rawvideo',
 '-pix_fmt', 'bgr24',
 '-s', "{}x{}".format(width, height),
 '-r', str(fps),
 '-i', '-',
 '-c:v', 'libx264',
 '-pix_fmt', 'yuv420p',
 '-preset', 'ultrafast',
 '-f', 'flv',
 rtmp_url]

# using subprocess and pipe to fetch frame data
p = subprocess.Popen(command, stdin=subprocess.PIPE)


while cap.isOpened():
 ret, frame = cap.read()
 if not ret:
 print("frame read failed")
 break

 # YOUR CODE FOR PROCESSING FRAME HERE

 # write to pipe
 p.stdin.write(frame.tobytes())



and below is the log :


ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
 configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
Input #0, rawvideo, from 'pipe:':
 Duration: N/A, start: 0.000000, bitrate: 221184 kb/s
 Stream #0:0: Video: rawvideo (BGR[24] / 0x18524742), bgr24, 1280x720, 221184 kb/s, 10 tbr, 10 tbn, 10 tbc
[tcp @ 0x556bea198680] Connection to tcp://127.0.0.1:1935 failed: Connection refused
[rtmp @ 0x556bea1a2640] Cannot open connection tcp://127.0.0.1:1935
rtmp://127.0.0.1:1935/stream/pupils_trace: Connection refused
Traceback (most recent call last):
 File "testing.py", line 42, in <module>
 p.stdin.write(frame.tobytes())
</module>


Here what I tried (All of it always "Connection Refused")


- 

- Running the code directly
- Running the code using sudo
- Run with 'sudo su'
- Allow the port used in ufw
- Disable ufw
- I tried executing command directly in terminal, also throws "connection refused"
- using 127.0.0.1 or "localhost" or 0.0.0.0 or my local IP, everything throws connection error
- Tried UDP and TCP


















Anyone can help me ?
Thanks


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FFMPEG missing audio when remuxing AVI to MP4
24 juillet 2022, par JobaI want to convert from .avi to .mp4 without any quality impact.


When I use ffmpeg cli to remux the file the output file is missing the audio.




ffmpeg -i input.mpg.avi -c copy output.mp4




➜ Desktop ffmpeg -i input.mpg.avi -c copy output.mp4
ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.0.1_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-neon
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100
Input #0, avi, from 'input.mpg.avi':
 Metadata:
 software : transcode-1.0.6
 Duration: 01:45:46.56, start: 0.000000, bitrate: 2055 kb/s
 Stream #0:0: Video: mpeg4 (Simple Profile) (DX50 / 0x30355844), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1915 kb/s, 25 fps, 25 tbr, 25 tbn
 Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, fltp, 128 kb/s
Output #0, mp4, to 'output.mp4':
 Metadata:
 software : transcode-1.0.6
 encoder : Lavf59.16.100
 Stream #0:0: Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=2-31, 1915 kb/s, 25 fps, 25 tbr, 12800 tbn
 Stream #0:1: Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=158664 fps=142852 q=-1.0 Lsize= 1587337kB time=01:45:46.55 bitrate=2048.9kbits/s speed=5.71e+03x 
video:1483615kB audio:99165kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.287948%