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• checkasm/swscale : fix function prototypes

  3 juillet, par Kacper Michajłow

  checkasm/swscale : fix function prototypes
  This aligns declared function types in checkasm with real definition.
  Fixes FATE : checkasm-sw_rgb,sw_scale,sw_yuv2rgb,sw_yuv2yuv
  Fixes : runtime error : call to function <func> through pointer to incorrect function type
  
  Fixes : c1a0e657638f7007dcc807a2d985c22631fcd6d3
  Signed-off-by : Kacper Michajłow <kasper93@gmail.com>
  

  • [DH] tests/checkasm/sw_rgb.c
  • [DH] tests/checkasm/sw_scale.c
  • [DH] tests/checkasm/sw_yuv2rgb.c
  • [DH] tests/checkasm/sw_yuv2yuv.c

• Change file format from flv to anything android will play

  19 octobre 2011, par Bilthon

  I need to take this file which encoded is in h264 but in a flv container and just put it in a mp4, 3gp or whatever file format the android MediaPlayer will understand.

  I want to do this natively. As I will not be decoding nor encoding anything I think I will not be wasting a lot of power (am I wrong ?)

  I followed the instructions from here http://www.roman10.net/?p=394 and could sucessfully compile and use ffmpeg and use it with mp4 and 3gp files.

  But when it comes to flv files it fails. I understand there is no format definition for flv files in that specific port of ffmpeg for android.

  There is no libavformat/flv.h header file for instance.

  Maybe that's why this works :

  extern AVInputFormat ff_mov_demuxer ;
  av_register_input_format(&ff_mov_demuxer) ;

  While this fails :

  extern AVInputFormat ff_flv_demuxer;
  
  av_register_input_format(&ff_flv_demuxer);

  Question is, is there a light at the end of the tunnel ? has someone done something similar ? is it useful ? I mean, I can always just throw the flv media file into a flash player and voila.. the thing is that this would be a parcial solution, as it will not work for all those folks running slower devices that can't yet run Flash.

  Nelson

  PS. Just in case. Here's some info about the file I'm talking about :

  ffmpeg -i rio.flv 
  
  ffmpeg version N-32624-gea8de10, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Sep 15 2011 23:31:42 with gcc 4.5.2
  
    configuration: --enable-libfaac --enable-libmp3lame --enable-librtmp --enable-libtheora --enable-libx264 --enable-libxvid --enable-gpl --enable-nonfree
  
    libavutil    51. 16. 0 / 51. 16. 0
  
    libavcodec   53. 15. 0 / 53. 15. 0
  
    libavformat  53. 12. 0 / 53. 12. 0
  
    libavdevice  53.  3. 0 / 53.  3. 0
  
    libavfilter   2. 42. 0 /  2. 42. 0
  
    libswscale    2.  1. 0 /  2.  1. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 2000.00 (2000/1) -> 14.99 (15000/1001)
  
  Input #0, flv, from 'rio.flv':
  
    Duration: 00:01:00.06, start: 0.000000, bitrate: 783 kb/s
  
      Stream #0.0: Video: h264 (Main), yuv420p, 704x480 [SAR 10:11 DAR 4:3], 14.99 tbr, 1k tbn, 2k tbc

• How to make videos .mp4 for a Phillips Media Player GO GEAR VIBE models ? [closed]

  14 avril 2023, par Ivan Rojas Calvo

  Here is the answer by steps (4/13/23) :

  


  


  1. First download and install the software WinFF here

     


  


  2. Check the specificacions of your media player, mine is the GoGearVibe SA2VBE08K/55 model

     


  


  3. Look for the video specification : mine says that the video format needs to match this specifications :

     


     Format = MJPEG (.mp4)

     


     Resolution = 128 x 128 píxeles

     


     Frames per second = 30 cps (fps)

     


     Bitrate = 512 kpbs

     


  


  4. Read this tutorial to create a preset in WinFF here

     


  


  5. Create a preset that turns ANY mp4 video you have into an MJPEG video with the properties shown above with this info :

     


     name : GoGearVibe55

     


     preset label : MJPEG GOGEAR

     


     Preset command line :

     


     -f mov -vf scale=128:128 -c:v mjpeg -b:v 512k -r 25 -c:a adpcm_ima_wav -b:a 192k -ar 22050 -ac 2


     


     output file : mp4

     


  


  6. Understand how to adapt the code to your necessities with this image
enter image description here

     


  


  


  Do not change what is mark in red, that's the resolution of the screen and the encoder of the video. You can change the value mark in blue, which means the bitrate, more bitrate the video will have more definition without changing the resolution. Tha value in green refers to the fps and the ones marked in yellow is the audio settings, don't worry about that, are good audio settings.

  


  Done. I did'n know how to create an article so I let you try this solution, good luck !