Recherche avancée
Médias (91)
-
999,999
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
-
Demon seed (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
-
The four of us are dying (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
-
Corona radiata (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
-
Lights in the sky (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
Sur d’autres sites (114)
-
FFMPEG Removing audio from video makes the video short
1er mai 2020, par Pratik DaigavaneI was trying to remove audio from video using FFmpeg, the command I used is :



ffmpeg -i video.mp4 -an -c copy no_sound.mp4




But the length of the final video is less than the original video.



Original Video Length - 0:05:43
Final Vidoe Length - 0:05:34



Following is the output generated by FFmpeg :



ffmpeg -i video.mp4 -an -c copy no_sound.mp4
ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)
 configuration: --prefix=/usr --extra-version=1ubuntu1 --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, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 creation_time : 1970-01-01T00:00:00.000000Z
 encoder : Lavf52.64.2
 Duration: 00:05:42.96, start: 0.000000, bitrate: 99 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 816x688 [SAR 1:1 DAR 51:43], 64 kb/s, 1.75 fps, 15 tbr, 15 tbn, 30 tbc (default)
 Metadata:
 creation_time : 1970-01-01T00:00:00.000000Z
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 33 kb/s (default)
 Metadata:
 creation_time : 1970-01-01T00:00:00.000000Z
 handler_name : SoundHandler
Output #0, mp4, to 'no_sound.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.29.100
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 816x688 [SAR 1:1 DAR 51:43], q=2-31, 64 kb/s, 1.75 fps, 15 tbr, 15360 tbn, 15 tbc (default)
 Metadata:
 creation_time : 1970-01-01T00:00:00.000000Z
 handler_name : VideoHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 584 fps=0.0 q=-1.0 Lsize= 2629kB time=00:05:34.53 bitrate= 64.4kbits/s speed=5.78e+04x 
video:2621kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.313674%




Why is this happening ?





-
FFMPEG command not working on MP4 files as expected
21 février 2020, par DavidBI am trying to set the output time offset for mp4 file.
ffmpeg -ss 13.554000 -i input.mp4 -c copy -t 10 -output_ts_offset 13.554000 output.mp4
This code works for WEBM file as expected but not for MP4.
In webm it delays start time of video to the specified timestamp and duration is 23.554 but in mp4 it just cuts the video, start time is set to 0 and duration is 10
Cannot find what is problem.ffmpeg -ss 12.960000 -i v.mp4 -c copy -t 10 -output_ts_offset 12.960000 output.mp4
ffmpeg version git-2019-12-26-b0d0d7e Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20191125
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig
--enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora
--enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis
--enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid
--enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
--enable-libopenmpt --enable-amf
libavutil 56. 37.100 / 56. 37.100
libavcodec 58. 65.100 / 58. 65.100
libavformat 58. 35.101 / 58. 35.101
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 69.101 / 7. 69.101
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'v.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01T00:00:00.000000Z
encoder : Lavf53.24.2
Duration: 00:00:29.57, start: 0.000000, bitrate: 1421 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1032 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : SoundHandler
Output #0, mp4, to 'output.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.35.101
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1032 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 250 fps=0.0 q=-1.0 Lsize= 1687kB time=00:00:09.99 bitrate=1382.7kbits/s speed=2.21e+03x
video:1212kB audio:468kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.408804%``` -
Trim video and extract thumbnail simultaneously
12 septembre 2019, par RobinI am using the following two codes for ffmpeg.
Trim Video :
ffmpeg -i input.mp4 -ss 0 -t 100 -c copy -f mp4 output.mp4
Create Thumbnail :
ffmpeg -i input.mp4 -ss 1 -vframes 1 -f mjpeg output
Which works as expected and is super fast, but when I combine the two like so :
ffmpeg -i input.mp4 -ss 0 -t 100 -c copy -f mp4 output.mp4 -i input.mp4 -ss 1 -vframes 1 -f mjpeg output.jpeg
ffmpeg
runs a re-encoding copy rather than using-c copy
. I really would like to execute both of these functions in a singleffmpeg
command.Below is the output from terminal when it is generating the thumbnail, which is where it appears the re-encoding is happening.
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Stream #1:0(und): Video: mjpeg, yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
encoder : Lavc57.107.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame= 324 fps=0.0 q=-1.0 q=6.3 size= 1792kB time=00:00:12.94 bitrate=1133.7kbits/s dup=0 drop=285 speed=2
frame= 661 fps=660 q=-1.0 q=6.3 size= 4096kB time=00:00:26.43 bitrate=1269.5kbits/s dup=0 drop=622 speed=2
frame= 1013 fps=674 q=-1.0 q=6.3 size= 6912kB time=00:00:40.51 bitrate=1397.7kbits/s dup=0 drop=974 speed=
frame= 1356 fps=677 q=-1.0 q=6.3 size= 8704kB time=00:00:54.22 bitrate=1314.9kbits/s dup=0 drop=1317 speed=
frame= 1694 fps=677 q=-1.0 q=6.3 size= 11264kB time=00:01:07.75 bitrate=1361.9kbits/s dup=0 drop=1655 speed=
frame= 2031 fps=676 q=-1.0 q=6.3 size= 14080kB time=00:01:21.23 bitrate=1419.8kbits/s dup=0 drop=1992 speed=
frame= 2360 fps=673 q=-1.0 q=6.3 size= 16384kB time=00:01:34.37 bitrate=1422.1kbits/s dup=0 drop=2321 speed=
frame= 2511 fps=672 q=-1.0 Lq=6.3 size= 17695kB time=00:01:40.40 bitrate=1443.8kbits/s dup=0 drop=2474 speed=26.9x
video:13036kB audio:4684kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown