Sur d’autres sites (11865)

• ffprobe : how do I get the time zone of creation date ?

  29 août 2022, par Paolo Benvenuto

  I have a video made with a canon camera (actually a PowerShow G5Xm2), I want to extract the creation date metadata, and I found that I can see it with :

  


  $ ffprobe -i myfile.MP4 -show_entries stream_tags
[.....]
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'myfile.MP4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp42avc1CAEP
    make            : 
    make-eng        : 
    model           : 
    model-eng       : 
    creation_time   : 2022-08-28T15:25:09.000000Z
  Duration: 00:00:53.96, start: 0.000000, bitrate: 29939 kb/s
  Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080, 29639 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (default)
    Metadata:
      creation_time   : 2022-08-28T15:25:09.000000Z
      vendor_id       : [0][0][0][0]
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 253 kb/s (default)
    Metadata:
      creation_time   : 2022-08-28T15:25:09.000000Z
      vendor_id       : [0][0][0][0]
[STREAM]
TAG:creation_time=2022-08-28T15:25:09.000000Z
TAG:language=eng
TAG:vendor_id=[0][0][0][0]
[/STREAM]
[STREAM]
TAG:creation_time=2022-08-28T15:25:09.000000Z
TAG:language=eng
TAG:vendor_id=[0][0][0][0]
[/STREAM]


  


  The creation date in in UTC, and it has the format "%Y-%m-%dT%H :%M :%S.%fZ". The camera has the info of the time zone, and actually it converted the local time to UTC time, so I suppose that the MP4 should hide somewhere the time zone info.

  


  How do I see it ?

  


• Trying to compile x264 and ffmpeg for iPhone - "missing required architecture arm in file"

  4 août 2012, par jtrim

  I'm trying to compile x264 for use in an iPhone application. I see there are instructions on how to compile ffmpeg for use on the platform here : http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-October/076618.html , but I can't seem to find anything this complete for compiling x264 on the iPhone. I've found this source tree : http://gitorious.org/x264-arm that seems to have support for the ARM platform.

  Here is my config line :

  ./configure —cross-prefix=/usr/bin/ —host=arm-apple-darwin10 —extra-cflags="-B /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk/usr/lib/ -I /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk/usr/lib/"
  

  ...and inside configure I'm using the gas-preprocessor script (first link above) as my assembler :

  gas-preprocessor.pl gcc
  

  When I start compiling, it chunks away for a little while, then it spits out these warnings and a huge list of undefined symbols :

  ld : warning : option -s is obsolete and being ignored
  ld : warning : -force_cpusubtype_ALL will become unsupported for ARM architectures
  ld : warning : in /usr/lib/crt1.o, missing required architecture arm in file
  ld : warning : in /usr/X11R6/lib/libX11.dylib, missing required architecture arm in file
  ld : warning : in /usr/lib/libm.dylib, missing required architecture arm in file
  ld : warning : in /usr/lib/libpthread.dylib, missing required architecture arm in file
  ld : warning : in /usr/lib/libgcc_s.1.dylib, missing required architecture arm in file
  ld : warning : in /usr/lib/libSystem.dylib, missing required architecture arm in file
  Undefined symbols :
  

  My guess would be that the problem has to do with the "missing required architecture arm in file" warning...any ideas ?

• How convert mp4(kazam) to mp4(android/iphone) ffmpeg [duplicate]

  29 avril 2020, par SonickSeven

  Hello team

  



  I have a problem, i thougnt that all files mp4 were similar but when i try to open it in android or iphone, not all files can open. I use kazam to recorder screen and kazam save it in mp4. but this mp4 not is possible open in my browser, but i have reviewed all properties comparate to others videos that phones can plays and all are same.

  



  Properties files

  



  

  



  this is the mp4 file for you try

  



  So i have searched in internet how convert they to mp4 avaliable for android but i can't solve it

  



  command ffmpeg tryed

  



  ffmpeg -i ${data.file.path} -c:a aac -ac 2 -movflags +faststart ${newVideoPath}

ffmpeg -i ${data.file.path} -c:v libx264 -c:a libmp3lame -movflags +faststart ${newVideoPath}

ffmpeg -i ${data.file.path} -c:a libfdk_aac -movflags +faststart ${newVideoPath}


  



  But nothing work, i have found question similar but it didn't work me