Comments (7)
pderian
commented on May 26, 2024
Hi,
gpCam.stream() starts the stream for the GoPro, then spawns ffmepg which receives the stream, possibly re-encodes it and sends it somewhere else (where VLC would read it). From your output it looks like ffmpeg receives the stream from the GoPro. Maybe the issue is between ffmpeg and VLC?
Since you installed ffmpeg, perhaps ffplay is available as well? If so, you can try to display directly the stream coming from your GoPro:
- after connecting to the camera, simply start the stream with
gpCam.livestream("start"). Do not usegpCam.stream(...). - start ffplay with the following options:
ffplay -f mpegts -i udp://<GOPRO_IP>:8554
After some startup time, it should display the video on your screen. Use 'q' to quit.
If the above works, then the issue is not with the camera...
Cheers,
Pierre
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neokyuubi
commented on May 26, 2024
Hi,
Thank you @pderian .
Using ffplay as you said (in my case : ffplay -f mpegts -i udp://10.5.5.100:8554), it works for 3 to 4 seconds and then it freeze !
It get stuck at last line of the output : 22.08 M-V: -0.908 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0 ,
But these values keep changing : 22.08 M-V: -0.908
I waited about 2 minutes but it still frozen !
And here's the output :
ffplay version N-91378-g3f953379e1 Copyright (c) 2003-2018 the FFmpeg developers
built with gcc 7.3.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libf
reetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --
enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --en
able-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --en
able-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.104 / 58. 20.104
libavformat 58. 17.101 / 58. 17.101
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[h264 @ 00000000003e7440] non-existing PPS 0 referenced 0B f=0/0
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced 0B f=0/0
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[h264 @ 00000000003e7440] non-existing PPS 0 referenced
Last message repeated 1 times
[h264 @ 00000000003e7440] decode_slice_header error
[h264 @ 00000000003e7440] no frame!
[mpegts @ 00000000003d2880] Could not find codec parameters for stream 2 (Unknown: none ([128][0][0][0] / 0x0080)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'udp://10.5.5.100:8554':
Duration: N/A, start: 6.677333, bitrate: N/A
Program 1
Stream #0:0[0x1011]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709, progressive), 848x480 [SAR 1:1 DAR 53:30], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x1100]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 190 kb/s
Stream #0:2[0x200]: Unknown: none ([128][0][0][0] / 0x0080)
SDL_OpenAudio (2 channels, 48000 Hz): WASAPI can't initialize audio client: CoInitialize has not been called.
SDL_OpenAudio (1 channels, 48000 Hz): WASAPI can't initialize audio client: CoInitialize has not been called.
SDL_OpenAudio (2 channels, 44100 Hz): WASAPI can't initialize audio client: CoInitialize has not been called.
SDL_OpenAudio (1 channels, 44100 Hz): WASAPI can't initialize audio client: CoInitialize has not been called.
No more combinations to try, audio open failed
[h264 @ 0000000005aae540] concealing 917 DC, 917 AC, 917 MV errors in P frame
[swscaler @ 00000000062b1e40] deprecated pixel format used, make sure you did set range correctly
[h264 @ 0000000005aae540] error while decoding MB 42 28, bytestream -8
[h264 @ 0000000005aae540] concealing 113 DC, 113 AC, 113 MV errors in P frame
[h264 @ 0000000005aae540] concealing 761 DC, 761 AC, 761 MV errors in P frame
[h264 @ 0000000005aae540] concealing 251 DC, 251 AC, 251 MV errors in P frame
[h264 @ 0000000005aae540] cabac decode of qscale diff failed at 9 17
[h264 @ 0000000005aae540] error while decoding MB 9 17, bytestream 1724
[h264 @ 0000000005aae540] concealing 729 DC, 729 AC, 729 MV errors in P frame
[h264 @ 0000000005aae540] cabac decode of qscale diff failed at 49 16
[h264 @ 0000000005aae540] error while decoding MB 49 16, bytestream 1814
[h264 @ 0000000005aae540] concealing 742 DC, 742 AC, 742 MV errors in P frame
[h264 @ 0000000005aae540] cabac decode of qscale diff failed at 3 18
[h264 @ 0000000005aae540] error while decoding MB 3 18, bytestream 1506
[h264 @ 0000000005aae540] concealing 682 DC, 682 AC, 682 MV errors in P frame
[h264 @ 0000000005aae540] cabac decode of qscale diff failed at 10 10
[h264 @ 0000000005aae540] error while decoding MB 10 10, bytestream 2582
[h264 @ 0000000005aae540] concealing 1099 DC, 1099 AC, 1099 MV errors in P frame
[h264 @ 0000000005aae0c0] concealing 946 DC, 946 AC, 946 MV errors in P frame
22.08 M-V: -0.908 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
Is it something related to how i need to start ffplay ?
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pderian
commented on May 26, 2024
Not sure, to be honest... It happens as well with my setup, I do not think it comes from ffplay.
I use a GoPro HERO 5 Black with firmware HD5.02.02.60.00.
I also noticed that the stream video freezes after some time (25 s I would say). In my use case it is not really a problem, as I stop/restart the stream regularly. I would feel better with another solution, however!
Regarding the ffplay output: the only thing I notice is that the audio (Stream #0:1[0x1100]: Audio) is not decoded. In my case I always disable it (-na option of ffplay) so I can't help with that. I'm not sure audio is supposed to be available anyway? The third stream (Stream #0:2[0x200]: Unknown) is probably the stream of metadata (gpmf), it is not surprising that ffplay does not know what to do with it.
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pderian
commented on May 26, 2024
The solution was simple... we just forgot to run GoPro.KeepAlive() method to keep the camera alive while streaming.
Now, this function is blocking, so I would say the best approach is to run it in a separate thread.
Here is my version, which works fine in my case:
import threading
from goprocam import GoProCamera
def lifeguard(gpcam):
"""Creates a "lifeguard" thread tasked with keeping the camera alive e.g. for streaming.
:param gpcam: a GoProCamera.GoPro instance;
:return: a deamon thread running gpcam.KeepAlive().
Written by P. DERIAN 2018-07-04.
"""
t = threading.Thread(target=GoProCamera.GoPro.KeepAlive, args=(gpcam,), daemon=True)
t.start()
return t
# start the camera
gpcam = GoProCamera.GoPro()
# create a lifeguard
lg = lifeguard(gpcam)
# now you can start the stream and do whatever you want.
# the lg thread will be terminated upon exit of the program.
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neokyuubi
commented on May 26, 2024
Awesome, yes it worked, thank you @pderian ^^,
As the problem was solved then i close this one.
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zaidshakil
commented on May 26, 2024
Hello.. is there anyway i can record and stream at the same time?
When i send a record command to the camera, the streaming freezes!
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KonradIT
commented on May 26, 2024
No.
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