[FFmpeg-trac] #4948(avfilter:new): ffmpeg overlay not stitching videos in order of pts

[FFmpeg]

#4948: ffmpeg overlay not stitching videos in order of pts
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             Reporter:  godivyam    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  critical    |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  overlay     |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by godivyam):

 output :
 > ffmpeg -i rtmp://livestreamdev.my.tv:1935/LikesLiveShows/s50592289 -i
 rtmp://livestreamdev.my.tv:1935/LikesLiveShows/s50592289 -filter_complex
 "[0:v:0]pad=iw*2:ih[bg]; [bg][1:v:0]overlay=w;
 amerge,pan=stereo:c0<c0+c2:c1<c1+c3" -f flv
 rtmp://livestreamdev.my.tv:1935/hls/merged_mid
 ffmpeg version N-76137-gb0bb1dc Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
   configuration: --prefix=/usr/local --bindir=/usr/local/bin --pkg-config-
 flags=--static --enable-gpl --enable-libass --enable-libfdk-aac --enable-
 libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-
 nonfree --disable-static --enable-shared --enable-libspeex --enable-
 libfreetype
   libavutil      55.  4.100 / 55.  4.100
   libavcodec     57.  7.100 / 57.  7.100
   libavformat    57.  8.102 / 57.  8.102
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 12.100 /  6. 12.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.100 /  2.  0.100
   libpostproc    54.  0.100 / 54.  0.100
 [flv @ 0x187f5e0] audio stream discovered after head already parsed
 Input #0, flv, from
 'rtmp://livestreamdev.my.tv:1935/LikesLiveShows/s50592289':
   Duration: N/A, start: 3387.899000, bitrate: N/A
     Stream #0:0: Video: h264 (Baseline), yuv420p(tv), 320x480 [SAR 1:1 DAR
 2:3], 30.30 fps, 30 tbr, 1k tbn, 60 tbc
     Stream #0:1: Audio: nellymoser, 44100 Hz, mono, flt
 [flv @ 0x18d3d80] audio stream discovered after head already parsed
 Input #1, flv, from
 'rtmp://livestreamdev.my.tv:1935/LikesLiveShows/s50592289':
   Duration: N/A, start: 3389.942000, bitrate: N/A
     Stream #1:0: Video: h264 (Baseline), yuv420p(tv), 320x480 [SAR 1:1 DAR
 2:3], 30.30 fps, 30 tbr, 1k tbn, 60 tbc
     Stream #1:1: Audio: nellymoser, 44100 Hz, mono, flt
 [Parsed_pan_3 @ 0x18af940] This syntax is deprecated. Use '|' to separate
 the list items.
 [Parsed_pan_3 @ 0x18dd4a0] This syntax is deprecated. Use '|' to separate
 the list items.
 [Parsed_amerge_2 @ 0x18de1c0] No channel layout for input 1
 [Parsed_amerge_2 @ 0x18de1c0] Input channel layouts overlap: output layout
 will be determined by the number of distinct input channels
 [flv @ 0x18af200] removing common factors from framerate
 Output #0, flv, to 'rtmp://livestreamdev.my.tv:1935/hls/merged_mid':
   Metadata:
     encoder         : Lavf57.8.102
     Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p,
 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 30 fps, 1k tbn, 30 tbc
 (default)
     Metadata:
       encoder         : Lavc57.7.100 flv
     Stream #0:1: Audio: adpcm_swf ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 352 kb/s (default)
     Metadata:
       encoder         : Lavc57.7.100 adpcm_swf
 Stream mapping:
   Stream #0:0 (h264) -> pad
   Stream #0:1 (nellymoser) -> amerge:in0
   Stream #1:0 (h264) -> overlay:overlay
   Stream #1:1 (nellymoser) -> amerge:in1
   overlay -> Stream #0:0 (flv)
   pan -> Stream #0:1 (adpcm_swf)
 Press [q] to stop, [?] for help
 [flv @ 0x187f5e0] Thread message queue blocking; consider raising the
 thread_queue_size option (current value: 8)
 [flv @ 0x18d3d80] Thread message queue blocking; consider raising the
 thread_queue_size option (current value: 8)
 Past duration 0.979988 too large
 Past duration 0.919991 too large
 Past duration 0.699989 too large    213kB time=00:00:01.97 bitrate=
 884.1kbits/s
 Past duration 0.709999 too large
 Past duration 0.659996 too large
 Past duration 0.639992 too large
 Past duration 0.719994 too large    268kB time=00:00:02.53 bitrate=
 866.0kbits/s dup=0 drop=1
 Past duration 0.949989 too large    336kB time=00:00:03.08 bitrate=
 890.9kbits/s dup=0 drop=1
 Past duration 0.719994 too large    532kB time=00:00:05.03 bitrate=
 864.5kbits/s dup=0 drop=1
 Past duration 0.699989 too large
 Past duration 0.709999 too large
 Past duration 0.739998 too large     577kB time=00:00:05.59 bitrate=
 844.5kbits/s dup=0 drop=1
 Past duration 0.729988 too large
 Past duration 0.759987 too large     833kB time=00:00:08.56 bitrate=
 796.6kbits/s dup=0 drop=1
 Past duration 0.829994 too large
 Past duration 0.809990 too large
 Past duration 0.820000 too large
 Past duration 0.769997 too large
 Past duration 0.749992 too large     872kB time=00:00:09.08 bitrate=
 786.6kbits/s dup=0 drop=1
 [flv @ 0x191fe00] Failed to update header with correct duration.
 [flv @ 0x191fe00] Failed to update header with correct filesize.
 frame=  262 fps= 33 q=17.4 Lsize=     928kB time=00:00:09.49 bitrate=
 800.7kbits/s dup=0 drop=2
 video:512kB audio:409kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.824687%

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Ticket URL: <https://trac.ffmpeg.org/ticket/4948#comment:2>
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