[FFmpeg-user] Multiple "tee"s in a single FFMPEG instance

[Soner CAN]

Hi,

I made it work but it doesn't work the way I expect. "tee" is used for
delivering the same file to different destinations, right? We use it to
prevent FFMPEG encode the same file twice. But when I try to use two tee's
it needs to transcode again.

Here is the command and output which DOES NOT WORK:

ffmpeg -re -i test.mp4
-c:v libx264
-c:a libfaac
-strict experimental
-filter_complex "[0:0]scale=640x480[large];[0:0]scale=240x50[small]"
-f tee
-map "[large]"
-map 0:1
-c:a copy
"[f=flv]rtmp://RTMP_1_PRIMARIY|[f=flv]rtmp://RTMP_1_BACKUP"
-f tee
-map "[small]"
-map 0:1
-c:a copy
"[f=flv]rtmp://RTMP_2_PRIMARIY|[f=flv]rtmp://RTMP_2_BACKUP"


ffmpeg version 2.3.3 Copyright (c) 2000-2014 the FFmpeg developers
>   built on Aug 25 2014 19:47:15 with Apple LLVM version 5.1
> (clang-503.0.40) (based on LLVM 3.4svn)
>   configuration: --prefix=/usr/local/Cellar/ffmpeg/2.3.3 --enable-shared
> --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree
> --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang
> --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac
> --enable-libmp3lame --enable-libxvid
>   libavutil      52. 92.100 / 52. 92.100
>   libavcodec     55. 69.100 / 55. 69.100
>   libavformat    55. 48.100 / 55. 48.100
>   libavdevice    55. 13.102 / 55. 13.102
>   libavfilter     4. 11.100 /  4. 11.100
>   libavresample   1.  3.  0 /  1.  3.  0
>   libswscale      2.  6.100 /  2.  6.100
>   libswresample   0. 19.100 /  0. 19.100
>   libpostproc    52.  3.100 / 52.  3.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'polis-operasyon.mp4':
>   Metadata:
>     major_brand     : mp42
>     minor_version   : 0
>     compatible_brands: mp42mp41
>     creation_time   : 2014-08-05 05:41:20
>   Duration: 00:01:22.18, start: 0.000000, bitrate: 1795 kb/s
>     Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv),
> 1280x720 [SAR 1:1 DAR 16:9], 1603 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
> (default)
>     Metadata:
>       creation_time   : 2014-08-05 05:41:20
>       encoder         : AVC Coding
>       handler_name    : ?Mainconcept Video Media Handler
>     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
> fltp, 189 kb/s (default)
>     Metadata:
>       creation_time   : 2014-08-05 05:41:20
>       handler_name    : #Mainconcept MP4 Sound Media Handler
> Output #0, tee, to
> '[f=flv]rtmp://RTMP_1_PRIMARIY|[f=flv]rtmp://RTMP_1_BACKUP':
>   Metadata:
>     major_brand     : mp42
>     minor_version   : 0
>     compatible_brands: mp42mp41
>     Stream #0:0: Video: h264, q=2-31, 128 kb/s, SAR 4:3 DAR 0:0, 25 fps
> (default)
>     Metadata:
>       encoder         : Lavc55.69.100 libx264
>     Stream #0:1(eng): Audio: none, 0 channels, 128 kb/s (default)
>     Metadata:
>       creation_time   : 2014-08-05 05:41:20
>       handler_name    : #Mainconcept MP4 Sound Media Handler
> Output #1, tee, to
> '[f=flv]rtmp://RTMP_2_PRIMARIY|[f=flv]rtmp://RTMP_2_BACKUP':
>   Metadata:
>     major_brand     : mp42
>     minor_version   : 0
>     compatible_brands: mp42mp41
>     Stream #1:0: Video: none, q=2-31, 128 kb/s (default)
>     Stream #1:1(eng): Audio: none, 0 channels, 128 kb/s
>     Metadata:
>       creation_time   : 2014-08-05 05:41:20
>       handler_name    : #Mainconcept MP4 Sound Media Handler
> Stream mapping:
>   Stream #0:0 (h264) -> scale
>   Stream #0:0 (h264) -> scale
>   scale -> Stream #0:0 (libx264)
>   Stream #0:1 -> #0:1 (copy)
>   scale -> Stream #1:0 (?)
>   Stream #0:1 -> #1:1 (copy)
> Encoder (codec none) not found for output stream #1:0



So when I add encoder to other profile too, it works.

Is this an expected behavior or am I doing something wrong?

(By the way I can not use multiple FFMPEG instances. My source will be a
stream)

Thank you