[FFmpeg-user] Can't make video filter drawtext accept command from multi media filter zmq

[Paul B Mahol]

On 6/22/15, Thomas Seilund <tps at netmaster.dk> wrote:
> Hi All
>
> I always get error "38 Function not implemented" when I send command to
> video filter drawtext.
>
> Here is the command I run and the result I get:
>
> tps at t420:~/video/test$ echo Parsed_drawtext_1 text AA |
> /home/tps/data/data/ffmpeg/tools/zmqsend -b tcp://127.0.0.1:5557
> 38 Function not implemented
> tps at t420:~/video/test$
>
> I run the command while I have this ffmpeg instance running:
>
> tps at t420:~/video/test$ ffmpeg -loop 1 -i test.png -filter_complex
> "zmq=bind_address=tcp\\\://127.0.0.1\\\:
> 5557,drawtext=text=AA:x=50:y=50:fontfile=/usr/share/fonts/truetype/freefont/
>
> FreeMonoBold.ttf"  -f mpegts -c libx264 test.ts
> ffmpeg version N-69238-g2699a37 Copyright (c) 2000-2015 the FFmpeg
> developers
>    built on Apr 23 2015 17:10:30 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
>    configuration: --enable-gpl --enable-libmp3lame --enable-libvpx --enable-
>
> libx264 --enable-version3 --enable-libvorbis --enable-libfreetype --enable-
>
> libv4l2 --enable-libfdk-aac --enable-nonfree --enable-libpulse --enable-
> libzmq
>    libavutil      54. 17.100 / 54. 17.100
>    libavcodec     56. 20.100 / 56. 20.100
>    libavformat    56. 19.100 / 56. 19.100
>    libavdevice    56.  4.100 / 56.  4.100
>    libavfilter     5.  8.101 /  5.  8.101
>    libswscale      3.  1.101 /  3.  1.101
>    libswresample   1.  1.100 /  1.  1.100
>    libpostproc    53.  3.100 / 53.  3.100
> Input #0, png_pipe, from 'scoreboard.png':
>    Duration: N/A, bitrate: N/A
>      Stream #0:0: Video: png, pal8, 200x100 [SAR 72:72 DAR 2:1], 25 fps, 25
>
> tbr, 25 tbn, 25 tbc
> File 'test.ts' already exists. Overwrite ? [y/N] y
> No pixel format specified, yuv444p for H.264 encoding chosen.
> Use -pix_fmt yuv420p for compatibility with outdated media players.
> [libx264 @ 0x2d2c4c0] using SAR=1/1
> [libx264 @ 0x2d2c4c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
> AVX
> [libx264 @ 0x2d2c4c0] profile High 4:4:4 Predictive, level 1.1, 4:4:4 8-bit
> Output #0, mpegts, to 'test.ts':
>    Metadata:
>      encoder         : Lavf56.19.100
>      Stream #0:0: Video: h264 (libx264), yuv444p, 200x100 [SAR 1:1 DAR 2:1],
>
> q=-1--1, 25 fps, 90k tbn, 25 tbc
>      Metadata:
>        encoder         : Lavc56.20.100 libx264
> Stream mapping:
>    Stream #0:0 (png) -> zmq
>    drawtext -> Stream #0:0 (libx264)
> Press [q] to stop, [?] for help
> frame=14512 fps=1948 q=-1.0 Lsize=    2947kB time=00:09:40.40 bitrate=
> 41.6kbits/s
> video:351kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: 739.239502%
>
>
>
> Any help would be very much appreciated

Looking at code command must be reinit and args are normal args you
usual give to drawtext filter.

But example with drawtext and zmq should really be added to docs.

>
> Thanks
>
> Thomas S
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