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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
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Sur d’autres sites (9665)
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ffmpeg wont encode h264 mp4 video with libx264 installed
2 décembre 2014, par el producerI’m trying to do a simple encoding of an mp4 in h264 to mp4 but I keep getting the error :
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
I’m using this command :
ffmpeg -i qDqMvfoapXh6FO3KMuYiZCcG.mp4 out.mp4
I have compiled and installed from the ffmpeginstaller 8.0 from http://ffmpeginstaller.com/
This was working until i removed everything containing ffmpeg in the file name so that I can install libvpx and recompile ffmpeg. I used this command (as root) to remove all traces of ffmpeg from my system (redhat)
find / | grep -w ffmpeg | xargs rm -r -f
find / | grep -w cpffmpeg | xargs rm -r -f
find / | grep -w ffmpegscript | xargs rm -r -fThen I installed libvpx successfully and installed ffmpeg again but have not been able to encode h264 mp4 files since. Since them I have removed ffmpeg completely and recompiled a few times but haven’t got it to work again.
Complete ffmpeg output :
ffmpeg version N-68141-g4280150-syslint Copyright (c) 2000-2014 the FFmpeg developers
built on Dec 1 2014 20:24:46 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore- amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.101 / 56. 15.101
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'qDqMvfoapXh6FO3KMuYiZCcG.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2014-12-01 04:18:17
Duration: 00:00:22.61, start: 0.000000, bitrate: 12028 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 11968 kb/s, 29.88 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
Metadata:
rotate : 90
creation_time : 2014-12-01 04:18:17
handler_name : VideoHandle
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 121 kb/s (default)
Metadata:
creation_time : 2014-12-01 04:18:17
handler_name : SoundHandle
[libx264 @ 0x2505ee0] using cpu capabilities: none!
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
Stream #0:0(eng): Video: h264, none, q=2-31, 128 kb/s, 29.97 fps (default)
Metadata:
rotate : 90
creation_time : 2014-12-01 04:18:17
handler_name : VideoHandle
encoder : Lavc56.13.100 libx264
Stream #0:1(eng): Audio: aac, 0 channels, 128 kb/s (default)
Metadata:
creation_time : 2014-12-01 04:18:17
handler_name : SoundHandle
encoder : Lavc56.13.100 libfaac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (libfaac))
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or heightCan someone explain why I keep getting this error now ?
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ffmpeg wont encode h264 mp4 video with libx264 installed
2 décembre 2014, par el producerI’m trying to do a simple encoding of an mp4 in h264 to mp4 but I keep getting the error :
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
I’m using this command :
ffmpeg -i qDqMvfoapXh6FO3KMuYiZCcG.mp4 out.mp4
I have compiled and installed from the ffmpeginstaller 8.0 from http://ffmpeginstaller.com/
This was working until i removed everything containing ffmpeg in the file name so that I can install libvpx and recompile ffmpeg. I used this command (as root) to remove all traces of ffmpeg from my system (redhat)
find / | grep -w ffmpeg | xargs rm -r -f
find / | grep -w cpffmpeg | xargs rm -r -f
find / | grep -w ffmpegscript | xargs rm -r -fThen I installed libvpx successfully and installed ffmpeg again but have not been able to encode h264 mp4 files since. Since them I have removed ffmpeg completely and recompiled a few times but haven’t got it to work again.
Complete ffmpeg output :
ffmpeg version N-68141-g4280150-syslint Copyright (c) 2000-2014 the FFmpeg developers
built on Dec 1 2014 20:24:46 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore- amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.101 / 56. 15.101
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'qDqMvfoapXh6FO3KMuYiZCcG.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2014-12-01 04:18:17
Duration: 00:00:22.61, start: 0.000000, bitrate: 12028 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 11968 kb/s, 29.88 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
Metadata:
rotate : 90
creation_time : 2014-12-01 04:18:17
handler_name : VideoHandle
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 121 kb/s (default)
Metadata:
creation_time : 2014-12-01 04:18:17
handler_name : SoundHandle
[libx264 @ 0x2505ee0] using cpu capabilities: none!
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
Stream #0:0(eng): Video: h264, none, q=2-31, 128 kb/s, 29.97 fps (default)
Metadata:
rotate : 90
creation_time : 2014-12-01 04:18:17
handler_name : VideoHandle
encoder : Lavc56.13.100 libx264
Stream #0:1(eng): Audio: aac, 0 channels, 128 kb/s (default)
Metadata:
creation_time : 2014-12-01 04:18:17
handler_name : SoundHandle
encoder : Lavc56.13.100 libfaac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (libfaac))
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or heightCan someone explain why I keep getting this error now ?
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Combining Audio and Video file in python [duplicate]
8 juin 2020, par ysoI'm trying to understand how to us ffmpeg to combine video and audio files in python. I want to combine a .avi file and a .wav file to create a final .avi file. Is this the right approach ? I'm confused by the ffmpeg syntax.
Any help would be great.



I was looking through this for help :
https://wiki.libav.org/Snippets/avconv#Combine_audio_and_video_file



import ffmpeg
import subprocess

cmd = 'ffmpeg -i inputvideo.avi -i inputaudio.wav -c:v copy -c:a aac output_video_and audio.avi'
subprocess.call(cmd, shell=True) # "Muxing Done
print('Muxing Done')