Paul B Mahol writes:
On 6/22/15, Thomas Seilund <t...@netmaster.dk> wrote:
Paul B Mahol writes:
On 6/22/15, Thomas Seilund <t...@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@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@t420:~/video/test$
I run the command while I have this ffmpeg instance running:
tps@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Use -pix_fmt yuv420p for compatibility with outdated media players.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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Hi Paul,
Thanks a lot - it works - but it is slow !!
Now I run ffmpeg and pipe to ffplay to see the effect of the command.
I run this ffmpeg command:
tps@t420:~/video/test$ ffmpeg -loglevel debug -loop 1 -i test.png -
filter_complex "zmq=bind_address=tcp\\\://127.0.0.1\\\:
5557,drawtext=text=XX:x=50:y=50:fontfile=/usr/share/fonts/truetype/freefont/
FreeMonoBold.ttf" -f mpegts -c libx264 - | ffplay -i -
And I run this command to change the drawtext filter:
tps@t420:~/video/test$ echo Parsed_drawtext_1 reinit text=CC |
/home/tps/data/data/ffmpeg/tools/zmqsend -b tcp://127.0.0.1:5557
There is a delay of 10+ seconds from I run the command until I see the
effect in ffplay.
I had hoped for instant effect - can I do something to get instant effect ?
Perhaps encoding and drawing text is not realtime at all? Try encoding
with -preset ultrafast
Thanks for you help
Thomas S
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Hi Paul
Now I use -preset ultrafast and -re to encode real time.
Here is the command:
ffmpeg -re -y -loop 1 -i test.png -filter_complex
"zmq=bind_address=tcp\\\://127.0.0.1\\\:
5557,drawtext=text=XX:x=50:y=50:fontfile=/usr/share/fonts/truetype/freefont/
FreeMonoBold.ttf" -f mpegts -c libx264 -preset ultrafast test.ts
As the ffmpeg command run I can see the number of seconds encoded.
When that number reaches 10 seconds I run the command:
echo Parsed_drawtext_1 reinit text=CC |
/home/tps/data/data/ffmpeg/tools/zmqsend -b tcp://127.0.0.1:5557
Then I let the ffmpeg command run 10 seconds more.
When I replay the encoded file with ffplay I see the number of seconds
replayed.
I expected to see new text from the drawtext filter after 10 seconds but
the change did not occur until 12 seconds had passed - that is 2 seconds
later that expected.
Perhaps your right - it is not a real time event ?
Thanks
Thomas S
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