[FFmpeg-trac] #472(undetermined:closed): Initial gray frames when first frame is no keyframe

[FFmpeg]

#472: Initial gray frames when first frame is no keyframe
-------------------------------------+-------------------------------------
             Reporter:  DonMoir      |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:  fixed
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------

Comment (by DonMoir):

 I still get an initial gray frame with trains_cut.flv.

 In my app using ffmpeg-HEAD-9be937d still occurs.

 Using ffplay with the following details:

 C:\ffmpeg-dev\bin>ffplay c:\flashfiles\trains_cut.flv
 ffplay version N-33698-g6bca574, Copyright (c) 2003-2011 the FFmpeg
 developers
   built on Oct 16 2011 13:35:21 with gcc 4.6.1
   configuration: --disable-static --enable-shared --enable-gpl --enable-
 version3
  --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-
 frei0r --e
 nable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype
 --enable
 -libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp
 --enable-libsc
 hroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc
 --enable-l
 ibvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264
 --enable-libxa
 vs --enable-libxvid --enable-zlib
   libavutil    51. 21. 0 / 51. 21. 0
   libavcodec   53. 20. 1 / 53. 20. 1
   libavformat  53. 16. 0 / 53. 16. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 6 /  2. 43. 6
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [flv @ 011308E0] warning: first frame is no keyframe
 Input #0, flv, from 'c:\flashfiles\trains_cut.flv':
   Metadata:
     datasize        : 14613960
     lasttimestamp   : 212960
     audiosize       : 1802309
     videosize       : 12811397
     metadatacreator : inlet media - FLVTool2
     encoder         : Riva FLV Encoder
   Duration: 00:03:33.00, start: 0.000000, bitrate: 78 kb/s
     Stream #0:0: Video: flv1, yuv420p, 640x480, 490 kb/s, 25 tbr, 1k tbn,
 1k tbc

     Stream #0:1: Audio: mp3, 44100 Hz, mono, s16, 64 kb/s
 [flv @ 011308E0] warning: first frame is no keyframe5KB sq=    0B f=0/0
   16.59 A-V:  0.099 s:0.0 aq=   99KB vq=  611KB sq=    0B f=0/0   f=0/0

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/472#comment:6>
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