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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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Sur d’autres sites (8667)
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How to build the Exoplayer ffmpeg extension with the GSM codec ?
4 mars 2020, par MadCoconutI wanted to use Exoplayer to play an audio file but when I tried I got this exception :
2019-12-13 10:08:14.827 28972-29388/com.XXX.XXX E/ExoPlayerImplInternal: Source error.
com.google.android.exoplayer2.ParserException: Expected block alignment: 0; got: 65
at com.google.android.exoplayer2.extractor.wav.WavHeaderReader.peek(WavHeaderReader.java:81)
at com.google.android.exoplayer2.extractor.wav.WavExtractor.sniff(WavExtractor.java:50)
at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractorHolder.selectExtractor(ProgressiveMediaPeriod.java:1061)
at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:952)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:394)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)The audio files I have to play are wav files (GSM_MS, 13kb/s)
I tried to build the the Exoplayer Ffmpeg extension following the tutorial :
https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpegI cloned the Exoplayer repository and I downloaded the Android NDK version r20b.
I modified the build script build_ffmpeg.sh to enable the libgsm :
COMMON_OPTIONS=“
…
—enable-libgsm
"I defined the required environment variables :
- FFMPEG_EXT_PATH=“/extensions/ffmpeg/src/main/jni”
- NDK_PATH="/Users/USER/Documents/Android/android-ndk-r20b/"
- HOST_PLATFORM(“darwin-x86_64”)
- ENABLED_DECODERS(all the decoders available https://exoplayer.dev/supported-formats.html#ffmpeg-extension)
Then I built the library using the provided command line :
cd "${FFMPEG_EXT_PATH}" && \
./build_ffmpeg.sh \
"${FFMPEG_EXT_PATH}" "${NDK_PATH}" "${HOST_PLATFORM}" "${ENABLED_DECODERS[@]}"But something goes wrong during the build process :
remote: Enumerating objects: 38, done.
remote: Counting objects: 100% (38/38), done.
remote: Compressing objects: 100% (26/26), done.
remote: Total 26 (delta 20), reused 0 (delta 0)
Unpacking objects: 100% (26/26), done.
From git://source.ffmpeg.org/ffmpeg
377a095dc3..bd83191271 master -> origin/master
Already up to date.
Already on 'release/4.2'
Your branch is up to date with 'origin/release/4.2'.
ERROR: libgsm not found
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
GEN libavutil/libavutil.version
GEN libswresample/libswresample.version
GEN libavresample/libavresample.version
GEN libavcodec/libavcodec.version
CC libavcodec/aac_ac3_parser.o
CC libavcodec/aacdec.o
CC libavcodec/aacps_float.o
CC libavcodec/aacpsdsp_float.o
CC libavcodec/aacsbr.o
CC libavcodec/aactab.o
CC libavcodec/ac3.o
CC libavcodec/ac3_parser.o
CC libavcodec/ac3dec_data.o
CC libavcodec/ac3dec_float.oHere is a part of the content of the config.log file located in the ffmpeg checked out library (/extensions/ffmpeg/src/main/jni/ffmpeg/ffbuild/config.log :
…
/Users/USER/Documents/Android/android-ndk-r20b/toolchains/llvm/prebuilt/darwin-x86_64/bin/i686-linux-android16-clang -march=i686 -Wl,--as-needed -Wl,-z,noexecstack -pie -fPIE -pie -o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o
/var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o:test.c:function foo: error: undefined reference to 'cexp'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
check_lib libgsm gsm.h gsm_create -lgsm
check_func_headers gsm.h gsm_create -lgsm
test_ld cc -lgsm
test_cc
BEGIN /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
1 #include
2 #include
3 long check_gsm_create(void) { return (long) gsm_create; }
4 int main(void) { int ret = 0;
5 ret |= ((intptr_t)check_gsm_create) & 0xFFFF;
6 return ret; }
END /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
/Users/USER/Documents/Android/android-ndk-r20b/toolchains/llvm/prebuilt/darwin-x86_64/bin/i686-linux-android16-clang -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -march=i686 -std=c11 -fPIE -fomit-frame-pointer -fPIC -pthread -c -o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
/var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c:1:10: fatal error: 'gsm.h' file not found
…The gsm.h file is located there : /extensions/ffmpeg/src/main/jni/ffmpeg/libavcodec
I assume this path has been configured to be used by the build script.
Any help is much appreciated.
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Empty stream when cutting a video using ffmpeg
17 décembre 2019, par dscvWhen I try cutting a video, it outputs an empty stream (262 byte video with 0s duration). Would appreciate any insight, thanks.
Command used :
ffmpeg -i /path/to/long/video.mp4 -ss 37.69 -t 4.96 -c copy /path/to/short/video.mp4However, when I the following (more inaccurate) command, it outputs a video. This video also has some problems, as the last frame is repeated several times, making the video one second longer (with a frozen image for one second).
ffmpeg -ss 37.69 -i /path/to/long/video.mp4 -t 4.96 -c copy /path/to/short/video.mp4ffmpeg version :
ffmpeg version 3.4.6-0ubuntu0.18.04.1The outputs for the two commands are :
First command :
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/proj/vondrick/datasets/HowTo100M/video/Cars_&_Other_Vehicles/Motorcycles/52907/video_nVbIUDjzWY4.mp4':
Metadata:
major_brand : dash
minor_version : 0
compatible_brands: iso6avc1mp41
creation_time : 2015-06-26T00:39:04.000000Z
Duration: 00:07:14.40, start: 0.000000, bitrate: 244 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 426x240 [SAR 1:1 DAR 71:40], 2 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2015-06-26T00:39:04.000000Z
handler_name : VideoHandler
Output #0, mp4, to '/proj/vondrick/datasets/HowTo100M/cropped_video/Cars_&_Other_Vehicles/Motorcycles/52907/nVbIUDjzWY4/video_000000_p.mp4':
Metadata:
major_brand : dash
minor_version : 0
compatible_brands: iso6avc1mp41
encoder : Lavf57.83.100
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 426x240 [SAR 1:1 DAR 71:40], q=2-31, 2 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc (default)
Metadata:
creation_time : 2015-06-26T00:39:04.000000Z
handler_name : VideoHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=-1.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknownSecond command :
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/proj/vondrick/datasets/HowTo100M/video/Cars_&_Other_Vehicles/Motorcycles/52907/video_nVbIUDjzWY4.mp4':
Metadata:
major_brand : dash
minor_version : 0
compatible_brands: iso6avc1mp41
creation_time : 2015-06-26T00:39:04.000000Z
Duration: 00:07:14.40, start: 0.000000, bitrate: 244 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 426x240 [SAR 1:1 DAR 71:40], 2 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2015-06-26T00:39:04.000000Z
handler_name : VideoHandler
Output #0, mp4, to '/proj/vondrick/datasets/HowTo100M/cropped_video/Cars_&_Other_Vehicles/Motorcycles/52907/nVbIUDjzWY4/video_000000_3.mp4':
Metadata:
major_brand : dash
minor_version : 0
compatible_brands: iso6avc1mp41
encoder : Lavf57.83.100
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 426x240 [SAR 1:1 DAR 71:40], q=2-31, 2 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc (default)
Metadata:
creation_time : 2015-06-26T00:39:04.000000Z
handler_name : VideoHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 159 fps=0.0 q=-1.0 Lsize= 159kB time=00:00:04.95 bitrate= 263.0kbits/s speed=1.89e+03x
video:158kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.909119% -
Python FFmpeg : Setting VBR and BT.709
14 décembre 2019, par CryptonautI’m using this Python library to programmatically generate a short video using an image (.png) as input. The video needs to match the specifications of another video created by someone else.
The key differences between my output and the other are the following (these are the media attributes I desire to have) :
- BitRate_Mode : VBR
colour_primaries : BT.709(Solved via the comment made by Rotem - updated my code example to include the solution)
How would I achieve VBR ? It was my understanding ProRes 422 HQ natively used unconstrained VBR yet my output specifies CBR.
Secondly, as can be seen from my code, I’m attempting to conform to BT.709. However, my media information output does not specify this. What am I doing incorrectly ?Here’s my code :
image = ffmpeg.input(input_image, t='00:00:10', framerate='24000/1001', loop='1', probesize='42M')
output = ffmpeg.output(image, output_video,
f='mov',
vcodec='prores_ks',
vprofile='3',
pix_fmt='yuv422p10le',
g='48',
video_track_timescale='24000',
movflags='use_metadata_tags',
timecode='00:00:00:00',
color_primaries='bt709',
color_trc='bt709',
colorspace='bt709',
qcomp='1',
# BT.709 issue solved by adding the bsf option as seen via the line below
bsf='prores_metadata=color_primaries=bt709:color_trc=bt709:colorspace=bt709',
vf='scale=in_range=full:in_color_matrix=bt709:out_range=full:out_color_matrix=bt709')
output.run()Here’s the media information produced by my output :
{
"media":{
"@ref":"Redacted",
"track":[
{
"@type":"General",
"VideoCount":"1",
"OtherCount":"1",
"FileExtension":"mov",
"Format":"MPEG-4",
"Format_Profile":"QuickTime",
"CodecID":"qt ",
"CodecID_Version":"0000.02",
"CodecID_Compatible":"qt ",
"FileSize":"196366623",
"Duration":"10.010",
"OverallBitRate":"156936362",
"FrameRate":"23.976",
"FrameCount":"240",
"StreamSize":"2463",
"HeaderSize":"28",
"DataSize":"196364172",
"FooterSize":"2423",
"IsStreamable":"No",
"File_Created_Date":"UTC 2019-12-13 19:26:37.150",
"File_Created_Date_Local":"2019-12-13 19:26:37.150",
"File_Modified_Date":"UTC 2019-12-13 19:27:20.303",
"File_Modified_Date_Local":"2019-12-13 19:27:20.303"
},
{
"@type":"Video",
"StreamOrder":"0",
"ID":"1",
"Format":"ProRes",
"Format_Version":"0",
"Format_Profile":"422 HQ",
"CodecID":"apch",
"Duration":"10.010",
"BitRate_Mode":"CBR",
"BitRate":"156934237",
"Width":"1920",
"Height":"1080",
"Sampled_Width":"1920",
"Sampled_Height":"1080",
"PixelAspectRatio":"1.000",
"DisplayAspectRatio":"1.778",
"Rotation":"0.000",
"FrameRate_Mode":"CFR",
"FrameRate":"23.976",
"FrameCount":"240",
"ColorSpace":"YUV",
"ChromaSubsampling":"4:2:2",
"ScanType":"Progressive",
"Delay":"0.000",
"StreamSize":"196364160",
"Encoded_Library":"Lavc",
"colour_description_present":"Yes",
"colour_description_present_Source":"Stream",
"colour_primaries_Source":"Stream",
"transfer_characteristics_Source":"Stream",
"matrix_coefficients_Source":"Stream"
},
{
"@type":"Other",
"StreamOrder":"1",
"ID":"2",
"Type":"Time code",
"Format":"QuickTime TC",
"Duration":"10.010",
"FrameRate":"23.976",
"TimeCode_FirstFrame":"00:00:00:00",
"TimeCode_Striped":"Yes",
"Language":"en",
"Default":"No"
}
]
}
}Here’s the media information spec I’m trying to match :
{
"media":{
"@ref":"Redacted",
"track":[
{
"@type":"General",
"VideoCount":"1",
"OtherCount":"1",
"FileExtension":"mov",
"Format":"MPEG-4",
"Format_Profile":"QuickTime",
"CodecID":"qt ",
"CodecID_Version":"2005.03",
"CodecID_Compatible":"qt ",
"FileSize":"1397430682",
"Duration":"70.737",
"OverallBitRate_Mode":"VBR",
"OverallBitRate":"158042403",
"FrameRate":"23.976",
"FrameCount":"1696",
"StreamSize":"9898",
"HeaderSize":"28",
"DataSize":"1397420796",
"FooterSize":"9858",
"IsStreamable":"No",
"Encoded_Date":"UTC 2019-04-29 22:26:32",
"Tagged_Date":"UTC 2019-04-29 22:26:32",
"File_Created_Date":"UTC 2019-12-12 16:52:57.215",
"File_Created_Date_Local":"2019-12-12 16:52:57.215",
"File_Modified_Date":"UTC 2019-12-12 17:25:58.903",
"File_Modified_Date_Local":"2019-12-12 17:25:58.903",
"Encoded_Application":"DVP Factory r561 (2019-04-25), Host: dvp07"
},
{
"@type":"Video",
"StreamOrder":"0",
"ID":"1",
"Format":"ProRes",
"Format_Version":"0",
"Format_Profile":"422 HQ",
"CodecID":"apch",
"Duration":"70.737",
"Duration_LastFrame":"-0.000",
"BitRate_Mode":"VBR",
"BitRate":"158040381",
"Width":"1920",
"Height":"1080",
"Sampled_Width":"1920",
"Sampled_Height":"1080",
"PixelAspectRatio":"1.000",
"DisplayAspectRatio":"1.778",
"Rotation":"0.000",
"FrameRate_Mode":"CFR",
"FrameRate":"23.976",
"FrameCount":"1696",
"ColorSpace":"YUV",
"ChromaSubsampling":"4:2:2",
"ScanType":"Progressive",
"Delay":"0.000",
"StreamSize":"1397420784",
"Encoded_Library":"agi0",
"Language":"en",
"Encoded_Date":"UTC 2019-04-29 22:26:32",
"Tagged_Date":"UTC 2019-04-29 22:26:32",
"colour_description_present":"Yes",
"colour_description_present_Source":"Container / Stream",
"colour_primaries":"BT.709",
"colour_primaries_Source":"Container",
"colour_primaries_Original_Source":"Stream",
"transfer_characteristics":"BT.709",
"transfer_characteristics_Source":"Container",
"transfer_characteristics_Original_Source":"Stream",
"matrix_coefficients":"BT.709",
"matrix_coefficients_Source":"Container / Stream"
},
{
"@type":"Other",
"StreamOrder":"1",
"ID":"2",
"Type":"Time code",
"Format":"QuickTime TC",
"Duration":"70.737",
"FrameRate":"23.976",
"TimeCode_FirstFrame":"00:00:00:00",
"TimeCode_Striped":"Yes",
"Language":"en",
"extra":{
"Encoded_Date":"UTC 2019-04-29 22:26:32",
"Tagged_Date":"UTC 2019-04-29 22:26:32"
}
}
]
}
}
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