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Sur d’autres sites (7426)

  • Revision 749e0c7b28 : Revert "Revert "Revert 3 patches from Hangyu to get Chrome to build :"" This rev

    28 juin 2014, par James Zern

    Changed Paths :
     Modify /test/user_priv_test.cc


     Modify /vp9/decoder/vp9_decoder.c


     Modify /vp9/decoder/vp9_dthread.h


     Modify /vp9/vp9_dx_iface.c



    Revert "Revert "Revert 3 patches from Hangyu to get Chrome to build :""

    This reverts commit b336356198b8ada50fbb59f04f11cefceaf5ff95.

    This causes a hang in :
    VP9/InvalidFileTest.ReturnCode/3

    the change to test/user_priv_test.cc remains with a minor update

    Change-Id : I4a8a272ca37ea329b0f413f0b1cd827a238bd9fd

  • ffmpeg "select" filter not working with MPEG-4 and "-vcodec copy"

    5 novembre 2013, par Simone Palazzo

    I have an MPEG-4 video, which mediainfo describes as :

    Format                                   : MPEG-4
    
Format profile                           : Base Media
    
Codec ID                                 : isom
    
Overall bit rate                         : 6 772 Kbps
    
Writing application                      : Lavf54.6.100
    

    
Video
    
ID                                       : 1
    
Format                                   : AVC
    
Format/Info                              : Advanced Video Codec
    
Format profile                           : High@L4.1
    
Format settings, CABAC                   : Yes
    
Format settings, ReFrames                : 4 frames
    
Codec ID                                 : avc1
    
Codec ID/Info                            : Advanced Video Coding
    
Bit rate                                 : 25.0 Mbps
    
Frame rate mode                          : Constant
    
Frame rate                               : 29.000 fps
    
Color space                              : YUV
    
Chroma subsampling                       : 4:2:0
    
Bit depth                                : 8 bits
    
Scan type                                : Progressive
    
Bits/(Pixel*Frame)                       : 0.554
    
Stream size                              : 500 MiB (98%)
    
Writing library                          : x264 core 125
    
Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 /     nalyse=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=-2 / threads=12 / lookahead_threads=2 / 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=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=25000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

    (I removed some useless information)

    What I'd like to do is remove the first, say, 200 frames from the video.

    However, if I try with ffmpeg (version 0.11.1, compiled from source)

    ffmpeg -i video.mp4 -vf select='gte(n\,200)' -vcodec copy -strict -2 out.mp4

    it doesn't work, the frames are exactly the same. If I remove the -vcodec copy part, what happens is that the first 190 frames are all the same (equal to the 190th one) ; so, they're not removed, but replaced with the 190th one.

    If I try the select filter to extract single images from the video, with

    ffmpeg -i video.mp4 -vf "select=gte(n\,200)" %d.jpg

    it works alright.

    Does anybody have an idea why this happens ?

    Thank you !

  • Android NDK : Getting java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol "signal" referenced by "libffmpeg.so"

    27 février 2015, par Gaganpreet Singh

    I have a video trimmer application code .

    Its Android.mk file code is mentioned below :

    MY_LOCAL_PATH := $(call my-dir)

    include $(all-subdir-makefiles)

    LOCAL_PATH :=$(MY_LOCAL_PATH)
    
include $(CLEAR_VARS)
    
LOCAL_MODULE    := video-trimmer
    
LOCAL_SRC_FILES := video-trimmer.c
    
LOCAL_C_INCLUDES := $(MY_LOCAL_PATH) $(MY_LOCAL_PATH)/ffmpeg
    
LOCAL_SHARED_LIBRARIES := ffmpeg 
    
LOCAL_LDLIBS += -lz -llog
    
include $(BUILD_SHARED_LIBRARY)

    and Application.mk file code is :

    APP_MODULES      := ffmpeg video-trimmer
    
APP_OPTIM := debug

    When I try to run this application, I get following error :

    02-26 16:06:05.779: E/AndroidRuntime(4092): FATAL EXCEPTION: main
    
02-26 16:06:05.779: E/AndroidRuntime(4092): Process: net.video.trimmer, PID: 4092
    
02-26 16:06:05.779: E/AndroidRuntime(4092): java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "signal" referenced by "libffmpeg.so"...
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at java.lang.Runtime.loadLibrary(Runtime.java:364)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at java.lang.System.loadLibrary(System.java:526)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at net.video.trimmer.service.VideoTrimmingService.onCreate(VideoTrimmingService.java:29)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2585)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.app.ActivityThread.access$1800(ActivityThread.java:139)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.os.Handler.dispatchMessage(Handler.java:102)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.os.Looper.loop(Looper.java:136)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at android.app.ActivityThread.main(ActivityThread.java:5086)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at java.lang.reflect.Method.invokeNative(Native Method)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at java.lang.reflect.Method.invoke(Method.java:515)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    
02-26 16:06:05.779: E/AndroidRuntime(4092):     at dalvik.system.NativeStart.main(Native Method)

    My video-trimmer.so and ffmpeg.so are generated in \libs\armeabi .

    Thanks in advance.

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