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ffmpeg HLS creation and segmentation results in "cannot decode" on iPad
5 mai 2014, par jt_dylanI have the following code that plays on Mac Safari :
<video controls="controls" width="480" height="270">
<source src="http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/ hls/MVI_5927.m3u8">
</source></video>The url can be cut/pasted into the browser and works also but neither this code nor the url works in Windows Safari or iPad. Specifically on iPad I receive a cannot decode error. On Mac I have Quicktime installed so I tried that on Windows with no luck. The link that can be play on Mac is below.
http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/hls/MVI_5927.m3u8
Browser Versions of software :
Mac Safari : Version 7.0.3 (9537.75.14) (works)
Windows Safari : Version 5.1.7 (7534.7.2) (doesn’t work - blank screen)
iPad Safari : ios Version 7.1.1 (doesn’t work - cannot decode)Here is how I’m creating my mp4 (lgpl)
I’m creating an mp4 with this command :
ffmpeg -i input.mov c:v mpeg4 q:v 1 test.mp4I’m creating the hls using ffmpeg lpgl with this command :
ffmpegcmd -re -y -i test.mp4 -map 0 -f segment -segment_list test.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test%05d.ts 2>&1Now this works in Mac Safari with Quicktime installed but results in "cannot decode" if I try the url from ipad Safari.
I then tried with libx264 to create the mp4 as h.264 with aac and then copy to mpeg2 container as follows :
ffmpeg -i test.mov -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.tsThis still produces the same results. Any idea what is wrong here ?
Any help is much appreciated.
Regards,
jt_dylanOutput from libx264 commands below :
ffmpeg -i test.mov -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tst/MVI_1716.MOV':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
creation_time : 2012-07-21 05:17:44
Duration: 00:00:20.06, start: 0.000000, bitrate: 34471 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 33663 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2012-07-21 05:17:44
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x39ae9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x39ae9e0] profile High, level 5.0
[libx264 @ 0x39ae9e0] 264 - core 142 r2 ac76440 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=8 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=60 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
encoder : Lavf55.37.102
Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p, 1920x1080, q=-1--1, 24k tbn, 23.98 tbc (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream #0:1(eng): Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 240 kb/s (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (pcm_s16le -> libfdk_aac)
Press [q] to stop, [?] for help
frame= 481 fps=1.5 q=-1.0 Lsize= 18428kB time=00:00:20.07 bitrate=7519.9kbits/s
video:17827kB audio:589kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.060811%
[libx264 @ 0x39ae9e0] frame I:3 Avg QP:23.31 size:113718
[libx264 @ 0x39ae9e0] frame P:135 Avg QP:25.06 size: 56912
[libx264 @ 0x39ae9e0] frame B:343 Avg QP:27.13 size: 29825
[libx264 @ 0x39ae9e0] consecutive B-frames: 1.2% 4.2% 20.6% 74.0%
[libx264 @ 0x39ae9e0] mb I I16..4: 20.0% 53.3% 26.6%
[libx264 @ 0x39ae9e0] mb P I16..4: 9.7% 22.8% 5.4% P16..4: 41.0% 8.6% 5.4% 0.1% 0.0% skip: 7.0%
[libx264 @ 0x39ae9e0] mb B I16..4: 3.3% 7.2% 2.0% B16..8: 40.7% 9.8% 1.7% direct: 6.3% skip:29.0% L0:49.6% L1:44.7% BI: 5.7%
[libx264 @ 0x39ae9e0] 8x8 transform intra:58.9% inter:70.2%
[libx264 @ 0x39ae9e0] direct mvs spatial:99.4% temporal:0.6%
[libx264 @ 0x39ae9e0] coded y,uvDC,uvAC intra: 58.6% 46.9% 7.3% inter: 23.9% 20.2% 0.2%
[libx264 @ 0x39ae9e0] i16 v,h,dc,p: 10% 64% 14% 12%
[libx264 @ 0x39ae9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 7% 50% 10% 3% 4% 3% 8% 4% 12%
[libx264 @ 0x39ae9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 4% 64% 5% 2% 3% 2% 6% 2% 10%
[libx264 @ 0x39ae9e0] i8c dc,h,v,p: 35% 53% 9% 3%
[libx264 @ 0x39ae9e0] Weighted P-Frames: Y:11.1% UV:4.4%
[libx264 @ 0x39ae9e0] ref P L0: 47.8% 12.2% 15.8% 6.8% 5.7% 4.2% 4.3% 2.6% 0.6% 0.0%
[libx264 @ 0x39ae9e0] ref B L0: 76.8% 10.5% 5.1% 2.9% 2.2% 1.5% 0.9%
[libx264 @ 0x39ae9e0] ref B L1: 94.6% 5.4%
[libx264 @ 0x39ae9e0] kb/s:7279.24
ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
Metadata:
handler_name : SoundHandler
[swscaler @ 0x367c0c0] deprecated pixel format used, make sure you did set range correctly
Output #0, segment, to 'MVI_1716.slower.%05d.ts':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg2video)
Stream #0:1 -> #0:1 (aac -> mp2)
Press [q] to stop, [?] for help
frame= 482 fps= 24 q=31.0 Lsize=N/A time=00:00:20.12 bitrate=N/A dup=1 drop=0
video:8293kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 195032183209984.000000%
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
Metadata:
handler_name : SoundHandler
File 'tstconv/MVI_1716.slower.ts' already exists. Overwrite ? [y/N] y
Output #0, mpegts, to 'tstconv/MVI_1716.slower.ts':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuvj420p, 1920x1080, q=2-31, 7279 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (aac -> mp2)
Press [q] to stop, [?] for help
frame= 481 fps=0.0 q=-1.0 Lsize= 20334kB time=00:00:20.12 bitrate=8276.6kbits/s
video:17827kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.325850%
ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.ts
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from 'tstconv/MVI_1716.slower.ts':
Duration: 00:00:20.11, start: 1.430733, bitrate: 8282 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc), 1920x1080, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, mono, s16p, 373 kb/s
[swscaler @ 0x1fe9ae0] deprecated pixel format used, make sure you did set range correctly
Output #0, segment, to 'MVI_1716.slower.%05d.ts':
Metadata:
encoder : Lavf55.37.102
Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg2video)
Stream #0:1 -> #0:1 (mp2 -> mp2) -
OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error
28 septembre 2016, par user2262504I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.
It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec ’libx264’" error.
Anyone has ideas to solve this problem ?
More specifically :
- anyone knows where and how OpenCV invoke ffmpeg API ?
- how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?
- will changes of default in ffmpeg be carried to libx264 ?
Errors :
1. Uising CV_FOURCC('H', '2', '6', '4')
[libx264 @ 0x255de40] broken ffmpeg default settings detected
[libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)
[libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>
[libx264 @ 0x255de40] speed presets are listed in x264 --help
[libx264 @ 0x255de40] profile is optional; x264 defaults to high
Could not open codec 'libx264': Unspecified error
2. Using FOURCC = -1 to invoke user customized codec
OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv
backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open,
file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp,
line 505 terminate called after throwing an instance of 'cv::Exception'
what(): /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:
505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally.
in function CvVideoWriter_GStreamer::open
</profile></speed>Codes :
int main(int argc, char *argv[])
{
VideoWriter outputVideo;
bool fourcc_on = true; //switch on / off different error
if (fourcc_on)
outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
else
outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);
if (!outputVideo.isOpened())
{
cout << "Could not open the output video for write" << endl;
return -1;
}
return 0;
}OpenCV Configuration :
-- Detected version of GNU GCC: 46 (406)
-- Found OpenEXR: /usr/lib/libIlmImf.so
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - found
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- Could NOT find JNI (missing: JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
--
-- General configuration for OpenCV 2.4.8 =====================================
-- Version control: unknown
--
-- Platform:
-- Host: Linux 3.8.0-38-generic x86_64
-- CMake: 2.8.7
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: RELEASE
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ Compiler: /usr/bin/c++ (ver 4.6)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /usr/bin/gcc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release):
-- Linker flags (Debug):
-- Precompiled headers: YES
--
-- OpenCV modules:
-- To be built: core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: androidcamera dynamicuda java
--
-- GUI:
-- QT: NO
-- GTK+ 2.x: YES (ver 2.24.10)
-- GThread : YES (ver 2.32.4)
-- GtkGlExt: NO
-- OpenGL support: NO
--
-- Media I/O:
-- ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
-- JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
-- PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
-- TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
-- JPEG 2000: /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
-- OpenEXR: /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
--
-- Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: YES (ver 2.2.0)
-- FFMPEG: YES
-- codec: YES (ver 55.58.105)
-- format: YES (ver 55.37.101)
-- util: YES (ver 52.78.100)
-- swscale: YES (ver 2.6.100)
-- gentoo-style: YES
-- GStreamer:
-- base: YES (ver 0.10.36)
-- app: YES (ver 0.10.36)
-- video: YES (ver 0.10.36)
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: Using libv4l (ver 1.0.1)
-- XIMEA: NO
-- Xine: NO
--
-- Other third-party libraries:
-- Use IPP: NO
-- Use Eigen: NO
-- Use TBB: NO
-- Use OpenMP: NO
-- Use GCD NO
-- Use Concurrency NO
-- Use C=: NO
-- Use Cuda: NO
-- Use OpenCL: YES
--
-- OpenCL:
-- Version: dynamic
-- Include path: /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
-- Use AMD FFT: NO
-- Use AMD BLAS: NO
--
-- Python:
-- Interpreter: /usr/bin/python (ver 2.7.3)
-- Libraries: /usr/lib/libpython2.7.so
-- numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
-- packages path: lib/python2.7/dist-packages
--
-- Java:
-- ant: NO
-- JNI: NO
-- Java tests: NO
--
-- Documentation:
-- Build Documentation: NO
-- Sphinx: NO
-- PdfLaTeX compiler: /usr/bin/pdflatex
--
-- Tests and samples:
-- Tests: YES
-- Performance tests: YES
-- C/C++ Examples: NO
--
-- Install path: /usr/local
--
-- cvconfig.h is in: /home/shixudongleo/Downloads/opencv-2.4.8/build
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/buildFFMPEG
ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
By using ffmpeg command line, libx264 is running normally.$ ffmpeg -i test.avi -vcodec libx264 test.mp4
ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
libavutil 52. 78.100 / 52. 78.100
libavcodec 55. 58.105 / 55. 58.105
libavformat 55. 37.101 / 55. 37.101
libavdevice 55. 13.100 / 55. 13.100
libavfilter 4. 4.100 / 4. 4.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, avi, from 'test.avi':
Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
Metadata:
title : julius.avi Video #1
File 'test.mp4' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x25d08e0] using cpu capabilities: none!
[libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
[libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 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=2 keyint=250 keyint_min=15 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=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
Metadata:
encoder : Lavf55.37.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
Metadata:
title : julius.avi Video #1
Stream mapping:
Stream #0:0 -> #0:0 (msvideo1 -> libx264)
Press [q] to stop, [?] for help
frame= 56 fps=0.0 q=-1.0 Lsize= 321kB time=00:00:03.60 bitrate= 731.0kbits/s
video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
[libx264 @ 0x25d08e0] frame I:3 Avg QP:15.36 size: 7975
[libx264 @ 0x25d08e0] frame P:38 Avg QP:26.05 size: 6230
[libx264 @ 0x25d08e0] frame B:15 Avg QP:28.25 size: 4418
[libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6% 0.0% 0.0%
[libx264 @ 0x25d08e0] mb I I16..4: 1.4% 72.8% 25.8%
[libx264 @ 0x25d08e0] mb P I16..4: 1.6% 5.7% 15.1% P16..4: 7.6% 6.3% 7.4% 0.0% 0.0% skip:56.3%
[libx264 @ 0x25d08e0] mb B I16..4: 0.2% 1.0% 2.0% B16..8: 13.3% 7.8% 8.7% direct: 8.3% skip:58.8% L0:34.9% L1:36.6% BI:28.5%
[libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
[libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
[libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24% 2%
[libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68% 1% 1% 1% 1% 1% 1%
[libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28% 5% 6% 5% 7% 5% 6%
[libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
[libx264 @ 0x25d08e0] ref P L0: 70.5% 9.0% 12.1% 6.5% 2.0%
[libx264 @ 0x25d08e0] ref B L0: 91.3% 8.7%
[libx264 @ 0x25d08e0] kb/s:700.56 -
OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error
28 septembre 2016, par user2262504I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.
It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec ’libx264’" error.
Anyone has ideas to solve this problem ?
More specifically :
- anyone knows where and how OpenCV invoke ffmpeg API ?
- how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?
- will changes of default in ffmpeg be carried to libx264 ?
Errors :
1. Uising CV_FOURCC('H', '2', '6', '4')
[libx264 @ 0x255de40] broken ffmpeg default settings detected
[libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)
[libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>
[libx264 @ 0x255de40] speed presets are listed in x264 --help
[libx264 @ 0x255de40] profile is optional; x264 defaults to high
Could not open codec 'libx264': Unspecified error
2. Using FOURCC = -1 to invoke user customized codec
OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv
backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open,
file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp,
line 505 terminate called after throwing an instance of 'cv::Exception'
what(): /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:
505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally.
in function CvVideoWriter_GStreamer::open
</profile></speed>Codes :
int main(int argc, char *argv[])
{
VideoWriter outputVideo;
bool fourcc_on = true; //switch on / off different error
if (fourcc_on)
outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
else
outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);
if (!outputVideo.isOpened())
{
cout << "Could not open the output video for write" << endl;
return -1;
}
return 0;
}OpenCV Configuration :
-- Detected version of GNU GCC: 46 (406)
-- Found OpenEXR: /usr/lib/libIlmImf.so
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - found
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- Could NOT find JNI (missing: JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
--
-- General configuration for OpenCV 2.4.8 =====================================
-- Version control: unknown
--
-- Platform:
-- Host: Linux 3.8.0-38-generic x86_64
-- CMake: 2.8.7
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: RELEASE
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ Compiler: /usr/bin/c++ (ver 4.6)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /usr/bin/gcc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release):
-- Linker flags (Debug):
-- Precompiled headers: YES
--
-- OpenCV modules:
-- To be built: core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: androidcamera dynamicuda java
--
-- GUI:
-- QT: NO
-- GTK+ 2.x: YES (ver 2.24.10)
-- GThread : YES (ver 2.32.4)
-- GtkGlExt: NO
-- OpenGL support: NO
--
-- Media I/O:
-- ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
-- JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
-- PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
-- TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
-- JPEG 2000: /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
-- OpenEXR: /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
--
-- Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: YES (ver 2.2.0)
-- FFMPEG: YES
-- codec: YES (ver 55.58.105)
-- format: YES (ver 55.37.101)
-- util: YES (ver 52.78.100)
-- swscale: YES (ver 2.6.100)
-- gentoo-style: YES
-- GStreamer:
-- base: YES (ver 0.10.36)
-- app: YES (ver 0.10.36)
-- video: YES (ver 0.10.36)
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: Using libv4l (ver 1.0.1)
-- XIMEA: NO
-- Xine: NO
--
-- Other third-party libraries:
-- Use IPP: NO
-- Use Eigen: NO
-- Use TBB: NO
-- Use OpenMP: NO
-- Use GCD NO
-- Use Concurrency NO
-- Use C=: NO
-- Use Cuda: NO
-- Use OpenCL: YES
--
-- OpenCL:
-- Version: dynamic
-- Include path: /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
-- Use AMD FFT: NO
-- Use AMD BLAS: NO
--
-- Python:
-- Interpreter: /usr/bin/python (ver 2.7.3)
-- Libraries: /usr/lib/libpython2.7.so
-- numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
-- packages path: lib/python2.7/dist-packages
--
-- Java:
-- ant: NO
-- JNI: NO
-- Java tests: NO
--
-- Documentation:
-- Build Documentation: NO
-- Sphinx: NO
-- PdfLaTeX compiler: /usr/bin/pdflatex
--
-- Tests and samples:
-- Tests: YES
-- Performance tests: YES
-- C/C++ Examples: NO
--
-- Install path: /usr/local
--
-- cvconfig.h is in: /home/shixudongleo/Downloads/opencv-2.4.8/build
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/buildFFMPEG
ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
By using ffmpeg command line, libx264 is running normally.$ ffmpeg -i test.avi -vcodec libx264 test.mp4
ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
libavutil 52. 78.100 / 52. 78.100
libavcodec 55. 58.105 / 55. 58.105
libavformat 55. 37.101 / 55. 37.101
libavdevice 55. 13.100 / 55. 13.100
libavfilter 4. 4.100 / 4. 4.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, avi, from 'test.avi':
Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
Metadata:
title : julius.avi Video #1
File 'test.mp4' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x25d08e0] using cpu capabilities: none!
[libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
[libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 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=2 keyint=250 keyint_min=15 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=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
Metadata:
encoder : Lavf55.37.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
Metadata:
title : julius.avi Video #1
Stream mapping:
Stream #0:0 -> #0:0 (msvideo1 -> libx264)
Press [q] to stop, [?] for help
frame= 56 fps=0.0 q=-1.0 Lsize= 321kB time=00:00:03.60 bitrate= 731.0kbits/s
video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
[libx264 @ 0x25d08e0] frame I:3 Avg QP:15.36 size: 7975
[libx264 @ 0x25d08e0] frame P:38 Avg QP:26.05 size: 6230
[libx264 @ 0x25d08e0] frame B:15 Avg QP:28.25 size: 4418
[libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6% 0.0% 0.0%
[libx264 @ 0x25d08e0] mb I I16..4: 1.4% 72.8% 25.8%
[libx264 @ 0x25d08e0] mb P I16..4: 1.6% 5.7% 15.1% P16..4: 7.6% 6.3% 7.4% 0.0% 0.0% skip:56.3%
[libx264 @ 0x25d08e0] mb B I16..4: 0.2% 1.0% 2.0% B16..8: 13.3% 7.8% 8.7% direct: 8.3% skip:58.8% L0:34.9% L1:36.6% BI:28.5%
[libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
[libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
[libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24% 2%
[libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68% 1% 1% 1% 1% 1% 1%
[libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28% 5% 6% 5% 7% 5% 6%
[libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
[libx264 @ 0x25d08e0] ref P L0: 70.5% 9.0% 12.1% 6.5% 2.0%
[libx264 @ 0x25d08e0] ref B L0: 91.3% 8.7%
[libx264 @ 0x25d08e0] kb/s:700.56
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