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Sur d’autres sites (9787)

  • Cant rotate video Android FFMPEG

    24 novembre 2016, par ashishguptabns

    I am using https://github.com/WritingMinds/ffmpeg-android-java. Can trim, join mp4 files but not able to rotate and speed up/down.

    Tried almost all SO answers but no luck.

    I am using latest Android Studio.

    D/ffmpeg_work: [-noautorotate, -i, /storage/emulated/0/Pictures/VideoApp/v_1479895157.mp4, -vf, transpose=1, /storage/emulated/0/Pictures/VideoApp/v_1480001945.mp4]
    
D/FFmpeg: Running publishing updates method
    
D/ffmpeg_work: onProgress: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    
D/ffmpeg_work: onProgress:   built with gcc 4.8 (GCC)
    
D/ffmpeg_work: onProgress:   configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
D/ffmpeg_work: onProgress:   libavutil      55. 17.103 / 55. 17.103
    
D/ffmpeg_work: onProgress:   libavcodec     57. 24.102 / 57. 24.102
    
D/ffmpeg_work: onProgress:   libavformat    57. 25.100 / 57. 25.100
    
D/ffmpeg_work: onProgress:   libavdevice    57.  0.101 / 57.  0.101
    
D/ffmpeg_work: onProgress:   libavfilter     6. 31.100 /  6. 31.100
    
D/ffmpeg_work: onProgress:   libswscale      4.  0.100 /  4.  0.100
    
D/ffmpeg_work: onProgress:   libswresample   2.  0.101 /  2.  0.101
    
D/ffmpeg_work: onProgress:   libpostproc    54.  0.100 / 54.  0.100
    
D/ffmpeg_work: onProgress: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Pictures/VideoApp/v_1479895157.mp4':
    
D/ffmpeg_work: onProgress:   Metadata:
    
D/ffmpeg_work: onProgress:     major_brand     : isom
    
D/ffmpeg_work: onProgress:     minor_version   : 512
    
D/ffmpeg_work: onProgress:     compatible_brands: isomiso2avc1mp41
    
D/ffmpeg_work: onProgress:     encoder         : Lavf57.25.100
    
D/ffmpeg_work: onProgress:   Duration: 00:00:09.88, start: -3.000000, bitrate: 1816 kb/s
    
D/ffmpeg_work: onProgress:     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x960, 1755 kb/s, 4.46 fps, 7.50 tbr, 90k tbn, 180k tbc (default)
    
D/ffmpeg_work: onProgress:     Metadata:
    
D/ffmpeg_work: onProgress:       rotate          : 270
    
D/ffmpeg_work: onProgress:       handler_name    : VideoHandler
    
D/ffmpeg_work: onProgress:     Side data:
    
D/ffmpeg_work: onProgress:       displaymatrix: rotation of 90.00 degrees
    
D/ffmpeg_work: onProgress:     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
    
D/ffmpeg_work: onProgress:     Metadata:
    
D/ffmpeg_work: onProgress:       handler_name    : SoundHandler

    Tried these also :

    [-noautorotate, -i, /storage/emulated/0/Pictures/VideoApp/v_1479895157.mp4, -filter:v, transpose=1, /storage/emulated/0/Pictures/VideoApp/v_1480002208.mp4]
    

    
[-noautorotate, -i, /storage/emulated/0/Pictures/VideoApp/v_1479895157.mp4, -filter:v, transpose=1, -metadata:s:v, rotate=0, /storage/emulated/0/Pictures/VideoApp/v_1480002275.mp4]
    

    
[-noautorotate, -i, /storage/emulated/0/Pictures/VideoApp/v_1479895157.mp4, -vf, transpose=1, /storage/emulated/0/Pictures/VideoApp/v_1480002362.mp4]

    After this nothing happens in both cases

  • What is the most efficient way to broadcast a live stream ? [closed]

    3 août 2020, par Harsh

    I want to build a live streaming system for a classroom. The amount on information on this subject is so confusing. These are the features/requirements that I want to have in my app :

    


      

    1. Room type system.

      2. 


    2. One teacher - N students (N<200).

      3. &#xA;

    3. Broadcast video/audio. This needs to be only 1 way. (1T ---> 200S)

      4. &#xA;

    4. Audio chat should be possible if a teacher allows a student to speak.

      5. &#xA;

    5. Need not to record the session, though it would be a great feature to have.

      6. &#xA;

    &#xA;

    Now, from my research I have established there are many ways to go about it. The best one to me seems using WebRTC. In that case I do not have to worry about the platform that much.&#xA;WebRTC needs a STUN/TURN server, that can be easily set-up using the coturn project.&#xA;I'll also need a SFU which forwards my stream to the client, like Janus or Mediasoup.&#xA;But that's where I'm getting confused.

    &#xA;

    Can I not directly use a live stream, send it to the server, transcode it in real time using ffmpeg to HLS/DASH and publish it to a S3 bucket from where the users can access it. Wouldn't that be more efficient and able to handle much more students easily.

    &#xA;

    For the audio part I could just use the p2p functionality of webrtc in the browser itself, so no need to route that through the server.

    &#xA;

    That is how far I've come to understand the system. I still don't completely understand how SFU works and I'm confused about how many live streams can one server handle (say a 4C/8GB). Or if using ffmpeg on VPS is a bad thing and I should use the AWS services instead ?

    &#xA;

    Can someone please help me understand this ?

    &#xA;

    Thanks !

    &#xA;

  • Merge commit ’46430fd47c6239ef8742d0a34f9412d5060fa798’

    15 mai 2013, par Michael Niedermayer
    Merge commit ’46430fd47c6239ef8742d0a34f9412d5060fa798’

    * commit ’46430fd47c6239ef8742d0a34f9412d5060fa798’ :
    
  vc1dec : Don’t attempt error concealment on field pictures
    
  vc1dec : fieldtx is only valid for interlaced frame pictures
    
  aacenc : Fix erasure of surround channels
    
  aacenc : Fix target bitrate for twoloop quantiser search
    

    Conflicts :
    
	libavcodec/vc1dec.c
    

    Merged-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/vc1dec.c

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