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  • Playing videos on iPhone after video conversion using ffmpeg

    12 juillet 2013, par Shashi

    It is a backend API(developed in Ruby on Rails) which is used by iphone and android mobiles to upload the videos. API is converting uploaded videos to MP4 format. I am using paperclip-ffmpeg gem for video conversion at backend. Here is what I used :

    has_attached_file :video ,
                 :styles=>{
                   :medium=>{ :geometry=>"480x360",:format=>'mp4',:streaming => true,
                       :convert_options => { :output =>
                                           {
                                             :acodec => 'aac',
                                             :ac => 2 ,
                                             :strict => 'experimental',
                                             'b:a' => '160k',

                                             :vcodec => 'libx264',
                                             :preset => 'slow',
                                             'profile:v' => 'baseline',
                                             :level => '30',
                                             :maxrate => '10000000',
                                             :bufsize => '10000000',
                                             'b:v' => '750k',
                                             :f => 'mp4',
                                             :threads => '0'
                                           }
                                       } },
                     :thumb => { :geometry => "160x120", :format => 'jpg', :time => 2 },
                     :thumb_large => { :geometry => "520x390", :format => 'jpg', :time => 2}
                   }, :processors => [:ffmpeg, :qtfaststart],
           :path => path/to/store/video,
           :url => url/of/video

    Problems I am facing are :

    When user uploads videos from android mobile it works perfect on android but does not play on iPhone. One more strange thing happens when user upload videos from iPhone, then it play perfect just after video upload, but after some time(2 or 3 hours) it stops to play those videos.

    How can I get rid of both these issues ? Any suggestion would be appreciated. Thanks

    @Michael, here is the detailed log for the video conversion uploaded by android mobile

    ffmpeg version git-2013-05-28-ced0307 Copyright (c) 2000-2013 the FFmpeg developers
     built on May 28 2013 07:45:18 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
     libavutil      52. 34.100 / 52. 34.100
     libavcodec     55. 12.100 / 55. 12.100
     libavformat    55.  7.100 / 55.  7.100
     libavdevice    55.  1.101 / 55.  1.101
     libavfilter     3. 72.100 /  3. 72.100
     libswscale      2.  3.100 /  2.  3.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l':
     Metadata:
       major_brand     : isom
       minor_version   : 0
       compatible_brands: isom3gp4
       creation_time   : 2013-06-19 15:39:02
     Duration: 00:00:25.88, start: 0.000000, bitrate: 16700 kb/s
       Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 16829 kb/s, 29.75 fps, 30 tbr, 90k tbn, 180k tbc
       Metadata:
         rotate          : 90
         creation_time   : 2013-06-19 15:39:02
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 122 kb/s
       Metadata:
         creation_time   : 2013-06-19 15:39:02
         handler_name    : SoundHandle
    [libx264 @ 0x2613c00] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
    [libx264 @ 0x2613c00] profile Constrained Baseline, level 3.0
    [libx264 @ 0x2613c00] 264 - core 133 r2 a3ac64b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 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=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=750 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 0
       compatible_brands: isom3gp4
       encoder         : Lavf55.7.100
       Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x360, q=-1--1, 750 kb/s, 15360 tbn, 30 tbc
       Metadata:
         rotate          : 90
         creation_time   : 2013-06-19 15:39:02
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 160 kb/s
       Metadata:
         creation_time   : 2013-06-19 15:39:02
         handler_name    : SoundHandle
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 -> libx264)
     Stream #0:1 -> #0:1 (aac -> aac)
    Press [q] to stop, [?] for help
    frame=  765 fps= 19 q=-1.0 Lsize=    2621kB time=00:00:25.88 bitrate= 829.4kbits/s dup=7 drop=0    
    video:2093kB audio:504kB subtitle:0 global headers:0kB muxing overhead 0.878228%
    [libx264 @ 0x2613c00] frame I:4     Avg QP:25.48  size: 11731
    [libx264 @ 0x2613c00] frame P:761   Avg QP:26.71  size:  2754
    [libx264 @ 0x2613c00] mb I  I16..4: 33.0%  0.0% 67.0%
    [libx264 @ 0x2613c00] mb P  I16..4:  2.1%  0.0%  0.9%  P16..4: 47.2%  9.5%  3.4%  0.0%  0.0%    skip:36.9%
    [libx264 @ 0x2613c00] final ratefactor: 23.58
    [libx264 @ 0x2613c00] coded y,uvDC,uvAC intra: 31.9% 54.5% 9.5% inter: 11.9% 24.4% 0.5%
    [libx264 @ 0x2613c00] i16 v,h,dc,p: 25% 33%  7% 34%
    [libx264 @ 0x2613c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 14%  9% 14% 10% 10% 11%  8%  7%
    [libx264 @ 0x2613c00] i8c dc,h,v,p: 50% 25% 17%  9%
    [libx264 @ 0x2613c00] ref P L0: 67.6% 15.2% 10.1%  3.9%  3.2%
    [libx264 @ 0x2613c00] kb/s:672.30
    ffmpeg version git-2013-05-28-ced0307 Copyright (c) 2000-2013 the FFmpeg developers
     built on May 28 2013 07:45:18 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
     libavutil      52. 34.100 / 52. 34.100
     libavcodec     55. 12.100 / 55. 12.100
     libavformat    55.  7.100 / 55.  7.100
     libavdevice    55.  1.101 / 55.  1.101
     libavfilter     3. 72.100 /  3. 72.100 octet-stream\r\n" name="video" tempfile=#tmp/RackMultipart20130620-28711-187049m>>
     libswscale      2.  3.100 /  2.  3.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
     Duration: 00:00:25.91, start: 0.021333, bitrate: 828 kb/s
       Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 672 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
       Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 159 kb/s
       Metadata:
         handler_name    : SoundHandler
    [libx264 @ 0x326d820] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
    [libx264 @ 0x326d820] profile Constrained Baseline, level 3.0
    [libx264 @ 0x326d820] 264 - core 133 r2 a3ac64b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 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=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=750 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-130rd1i.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
       Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 480x270, q=-1--1, 750 kb/s, 15360 tbn, 30 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
       Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 160 kb/s
       Metadata:
         handler_name    : SoundHandler
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 -> libx264)
     Stream #0:1 -> #0:1 (aac -> aac)
    Press [q] to stop, [?] for help
    frame=  766 fps= 38 q=-1.0 Lsize=    2666kB time=00:00:25.90 bitrate= 843.2kbits/s dup=1 drop=0    
    video:2138kB audio:505kB subtitle:0 global headers:0kB muxing overhead 0.863633%
    [libx264 @ 0x326d820] frame I:4     Avg QP:20.82  size: 11283
    [libx264 @ 0x326d820] frame P:762   Avg QP:22.03  size:  2813
    [libx264 @ 0x326d820] mb I  I16..4: 19.9%  0.0% 80.1%
    [libx264 @ 0x326d820] mb P  I16..4:  1.7%  0.0%  1.1%  P16..4: 49.3% 20.6%  7.0%  0.0%  0.0%    skip:20.3%
    [libx264 @ 0x326d820] final ratefactor: 19.24
    [libx264 @ 0x326d820] coded y,uvDC,uvAC intra: 43.4% 76.7% 29.0% inter: 23.0% 44.6% 1.7%
    [libx264 @ 0x326d820] i16 v,h,dc,p: 23% 29%  9% 39%
    [libx264 @ 0x326d820] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 21%  9% 11% 10% 10% 11%  8%  8%
    [libx264 @ 0x326d820] i8c dc,h,v,p: 44% 26% 18% 12%
    [libx264 @ 0x326d820] ref P L0: 74.0% 13.1%  7.7%  3.0%  2.1%
    [libx264 @ 0x326d820] kb/s:685.81
    ffmpeg version git-2013-05-28-ced0307 Copyright (c) 2000-2013 the FFmpeg developers
     built on May 28 2013 07:45:18 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
     libavutil      52. 34.100 / 52. 34.100
     libavcodec     55. 12.100 / 55. 12.100
     libavformat    55.  7.100 / 55.  7.100
     libavdevice    55.  1.101 / 55.  1.101
     libavfilter     3. 72.100 /  3. 72.100
     libswscale      2.  3.100 /  2.  3.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
     Duration: 00:00:25.91, start: 0.021333, bitrate: 828 kb/s
       Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 672 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
       Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 159 kb/s
       Metadata:
         handler_name    : SoundHandler
    Output #0, image2, to '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-1bdslpu.jpg':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
       Stream #0:0(eng): Video: mjpeg, yuvj420p, 160x90, q=2-31, 200 kb/s, 90k tbn, 30 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 -> mjpeg)
    Press [q] to stop, [?] for help
    frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.03 bitrate=N/A dup=0 drop=57    
    video:4kB audio:0kB subtitle:0 global headers:0kB muxing overhead -100.479303%
    ffmpeg version git-2013-05-28-ced0307 Copyright (c) 2000-2013 the FFmpeg developers
     built on May 28 2013 07:45:18 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
     libavutil      52. 34.100 / 52. 34.100
     libavcodec     55. 12.100 / 55. 12.100
     libavformat    55.  7.100 / 55.  7.100
     libavdevice    55.  1.101 / 55.  1.101
     libavfilter     3. 72.100 /  3. 72.100
     libswscale      2.  3.100 /  2.  3.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
     Duration: 00:00:25.91, start: 0.021333, bitrate: 828 kb/s
       Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 672 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
       Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 159 kb/s
       Metadata:
         handler_name    : SoundHandler
    Output #0, image2, to '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-1vp4al6.jpg':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf55.7.100
       Stream #0:0(eng): Video: mjpeg, yuvj420p, 520x292, q=2-31, 200 kb/s, 90k tbn, 30 tbc
       Metadata:
         rotate          : 90
         handler_name    : VideoHandler
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 -> mjpeg)
    Press [q] to stop, [?] for help
    frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.03 bitrate=N/A dup=0 drop=57    
    video:19kB audio:0kB subtitle:0 global headers:0kB muxing overhead -100.113677%


    Started POST "/api/v1/videos/create" for 69.42.0.13 at 2013-06-20 09:41:50 -0500
    Command :: file -b --mime '/tmp/RackMultipart20130620-28711-187049m'
    [paperclip] [ffmpeg] ffmpeg -i "/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l" 2>&1
    [paperclip] [ffmpeg] Command Success
    [paperclip] [ffmpeg] Making...
    [paperclip] [ffmpeg] Building Destination File: 'RackMultipart20130620-28711-187049m20130620-28711-2x7b7l' + 'mp4'
    [paperclip] [ffmpeg] Destination File Built
    [paperclip] [ffmpeg] Adding Geometry
    [paperclip] [ffmpeg] Extracting Target Dimensions
    [paperclip] [ffmpeg] Target Size is Available
    [paperclip] [ffmpeg] Keeping Aspect Ratio
    [paperclip] [ffmpeg] Resize
    [paperclip] [ffmpeg] Convert Options: 640x360
    [paperclip] [ffmpeg] Adding Format
    [paperclip] [ffmpeg] Adding Source
    [paperclip] [ffmpeg] Building Parameters
    [paperclip] [ffmpeg] -i :source -acodec aac -ac 2 -strict experimental -b:a 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b:v 750k -f mp4 -threads 0 -s 640x360 -y :dest
    Command :: ffmpeg -i '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l' -acodec aac -ac 2 -strict experimental -b:a 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b:v 750k -f mp4 -threads 0 -s 640x360 -y '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p.mp4'
    [paperclip] [qt-faststart] :source :dest
    Command :: qt-faststart '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p.mp4' '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl.mp4'
    [paperclip] [ffmpeg] ffmpeg -i "/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4" 2>&1
    [paperclip] [ffmpeg] Command Success
    [paperclip] [ffmpeg] Making...
    [paperclip] [ffmpeg] Building Destination File: 'RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06' + 'mp4'
    [paperclip] [ffmpeg] Destination File Built
    [paperclip] [ffmpeg] Adding Geometry
    [paperclip] [ffmpeg] Extracting Target Dimensions
    [paperclip] [ffmpeg] Target Size is Available
    [paperclip] [ffmpeg] Keeping Aspect Ratio
    [paperclip] [ffmpeg] Resize
    [paperclip] [ffmpeg] Convert Options: 480x270
    [paperclip] [ffmpeg] Adding Format
    [paperclip] [ffmpeg] Adding Source
    [paperclip] [ffmpeg] Building Parameters
    [paperclip] [ffmpeg] -i :source -acodec aac -ac 2 -strict experimental -b:a 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b:v 750k -f mp4 -threads 0 -s 480x270 -y :dest
    Command :: ffmpeg -i '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4' -acodec aac -ac 2 -strict experimental -b:a 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b:v 750k -f mp4 -threads 0 -s 480x270 -y '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-130rd1i.mp4'
    [paperclip] [qt-faststart] :source :dest
    Command :: qt-faststart '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-130rd1i.mp4' '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-130rd1i20130620-28711-snde6v.mp4'
    [paperclip] [ffmpeg] ffmpeg -i "/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4" 2>&1
    [paperclip] [ffmpeg] Command Success
    [paperclip] [ffmpeg] Making...
    [paperclip] [ffmpeg] Building Destination File: 'RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06' + 'jpg'
    [paperclip] [ffmpeg] Destination File Built
    [paperclip] [ffmpeg] Adding Geometry
    [paperclip] [ffmpeg] Extracting Target Dimensions
    [paperclip] [ffmpeg] Target Size is Available
    [paperclip] [ffmpeg] Keeping Aspect Ratio
    [paperclip] [ffmpeg] Resize
    [paperclip] [ffmpeg] Convert Options: 160x90
    [paperclip] [ffmpeg] Adding Format
    [paperclip] [ffmpeg] Adding Source
    [paperclip] [ffmpeg] Building Parameters
    [paperclip] [ffmpeg] -ss 2 -i :source -s 160x90 -vframes 1 -f image2 -y :dest
    Command :: ffmpeg -ss 2 -i '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4' -s 160x90 -vframes 1 -f image2 -y '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-1bdslpu.jpg'
    [paperclip] [ffmpeg] ffmpeg -i "/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4" 2>&1
    [paperclip] [ffmpeg] Command Success
    [paperclip] [ffmpeg] Making...
    [paperclip] [ffmpeg] Building Destination File: 'RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06' + 'jpg'
    [paperclip] [ffmpeg] Destination File Built
    [paperclip] [ffmpeg] Adding Geometry
    [paperclip] [ffmpeg] Extracting Target Dimensions
    [paperclip] [ffmpeg] Target Size is Available
    [paperclip] [ffmpeg] Keeping Aspect Ratio
    [paperclip] [ffmpeg] Resize
    [paperclip] [ffmpeg] Convert Options: 520x292
    [paperclip] [ffmpeg] Adding Format
    [paperclip] [ffmpeg] Adding Source
    [paperclip] [ffmpeg] Building Parameters
    [paperclip] [ffmpeg] -ss 2 -i :source -s 520x292 -vframes 1 -f image2 -y :dest
    Command :: ffmpeg -ss 2 -i '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi06.mp4' -s 520x292 -vframes 1 -f image2 -y '/tmp/RackMultipart20130620-28711-187049m20130620-28711-2x7b7l20130620-28711-uibd1p20130620-28711-1tgemjl20130620-28711-15qsi0620130620-28711-1vp4al6.jpg'
    [paperclip] Saving attachments.
  • Creating .flv files on the iphone without using ffmpeg

    15 mars 2014, par inwit

    How does one create .flv files on the iPhone ?

    I am aware of ffmpeg (with its LGPL restrictions). But are there other APIs that have been ported to iOS ?

  • IP-Cam / CCTV-Cam Live Streaming on iPhone/iPad

    19 mai 2013, par user1744691

    I want to get stream of an ip-cam on my iPhone/iPad and want to display it on screen. By R&D i found that ffmpeg is the only way to achieve it but i found nothing on ffmpeg. Is there any other way to achieve it or a confirmed way to get compiled ffmpeg on mac please mention that. Material regarding how to use ffmepg or source code example will be highly appreciated.

    Is there nothing built-in framework to achieve it if not then please mention if there is any free framework/sdk to achieve this functionality.

    Thanks