[FFmpeg-trac] #330(FFplay:new): Some instabilities while playing ffplay on beagleboard + angstrom

FFmpeg trac at avcodec.org
Thu Jul 7 07:05:33 CEST 2011


#330: Some instabilities while playing ffplay on beagleboard + angstrom
---------------------------+----------------------
Reporter:  luckynarang123  |       Owner:  michael
    Type:  defect          |      Status:  new
Priority:  normal          |   Component:  FFplay
 Version:  unspecified     |  Resolution:
Keywords:                  |  Blocked By:
Blocking:                  |  Reproduced:  0
Analyzed:  0               |
---------------------------+----------------------

Comment (by luckynarang123):

 1)

 When i used these commands,

 $ ffplay -vlowres 1 Mahi-Ve.avi
 or
 $ ffplay -vlowres 2 Mahi-Ve.avi

 Following is the output:

 ffplay version 0.8, Copyright (c) 2003-2011 the FFmpeg developers
   built on Jul  6 2011 12:41:29 with gcc 4.5.1
   configuration: --arch=arm --target-os=linux --enable-cross-compile
 --cross-prefix=arm-none-linux-gnueabi- --cc=arm-none-li'
   libavutil    51.  9. 1 / 51.  9. 1
   libavcodec   53.  7. 0 / 53.  7. 0
   libavformat  53.  4. 0 / 53.  4. 0
   libavdevice  53.  1. 1 / 53.  1. 1
   libavfilter   2. 23. 0 /  2. 23. 0
   libswscale    2.  0. 0 /  2.  0. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0xe16250] max_analyze_duration 5000000 reached
 at 5013333
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Mahi-Ve.avi':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2009-07-22 02:21:00
   Duration: 00:04:30.08, start: 0.000000, bitrate: 1580 kb/s
     Stream #0.0(eng): Video: h264 (Main), yuv420p, 720x420, 1446 kb/s, 25
 fps, 25 tbr, 2500 tbn, 5k tbc
     Metadata:
       creation_time   : 2009-07-22 02:21:00
     Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s
     Metadata:
       creation_time   : 2009-07-22 02:21:00
     Stream #0.2(eng): Data: tmcd / 0x64636D74
     Metadata:
       creation_time   : 2009-07-22 02:21:00
 [h264 @ 0xe18300] The maximum value for lowres supported by the decoder is
 0

 Still screen is black.

 2)
 But when i converted

 $ ffmpeg -i Mahi-Ve.avi -r 10 out1.avi
 $ ffmpeg -i WLAN_Bluetooth_demo.wmv out2.avi


 and played using these commands

 $ ffplay -vlowres 1 Mahi-Ve.avi
 or
 $ ffplay -vlowres 2 Mahi-Ve.avi

 it plays well.

 What could be possible reasons for this ? Why is that the file plays well
 with low bitrate and low resolution,and not with the actual resolution and
 bitrate ?

 Thanks for your precious inputs.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/330#comment:6>
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