Hi @Solla-topee,

Thank you for your suggestions. I have tried the following steps, but the issue persists:

1. Firmware and App Updates:

   • Both the Tapo app and the camera's firmware are up to date (Firmware Version: 1.3.9) (Hardware Version: 2.0) .

2. Number of Devices Streaming:

   • There is only one device, occasionally two, accessing the stream at once.

3. Restarting and Reconfiguring:

   • I have turned off the camera, turned it back on, and attempted to stream with the Tapo app, but I still cannot view the stream.
   • I performed a factory reset on the camera, reconfigured it, and attempted to stream again, but the issue remains.

Additional Details:

• I am able to ping the camera, its not a network issue.
• The camera switches to night vision (IR turns on) and the status light is working as well, indicating that the hardware is functional.
• ffmpeg now reports "Server returned 400 Bad Request".
• The Tapo app allows me to change camera settings, but the stream is not viewable.

Could you please guide me on what might have gone wrong or any additional steps I can take to resolve this issue?

Is it possible to downgrade the software?

Best Regards

Hi @Solla-topee,

Thank you for your continued assistance.

• I have tried both the Compatible Mode and the Hardware Acceleration Mode as you suggested. Unfortunately, the issue persists. There are no error messages on the app's camera live view page; the loading bar just keeps spinning indefinitely.
• I have also tried sharing the camera and viewing it from another device, but the same problem occurs. There is no error message that shows up at any point.
• All the devices are on the same network and can ping each other.
• I noticed that "Server returned 400 Bad Request" was because I missed creating the account for RTSP after formatting. That issue is resolved but the stream issue which is the actual issue...  is not resolved.
• I've been using `ffmpeg`, a command-line based video and audio tool with a player called `ffplay`. This normally works with my other four Tapo devices, including three C200 cameras and one C500 camera. However, this particular device has started acting up recently. The command gets the audio stream but doesn't retrieve the video. I can hear from the rtsp but i cant see the video ... there is no video.
  
  Here are the logs for your reference:

``` 
./ffplay -hide_banner -loglevel debug -rtsp_transport tcp -vcodec h264 -analyzeduration 60000000 -probesize 60000000 rtsp://myrtspuser:myrtsppass@10.0.0.175

Initialized direct3d renderer.
[tcp @ 000002982bf312c0] No default whitelist set sq=    0B
[tcp @ 000002982bf312c0] Original list of addresses:
[tcp @ 000002982bf312c0] Address 10.0.0.175 port 554
[tcp @ 000002982bf312c0] Interleaved list of addresses:
[tcp @ 000002982bf312c0] Address 10.0.0.175 port 554
[tcp @ 000002982bf312c0] Starting connection attempt to 10.0.0.175 port 554
[tcp @ 000002982bf312c0] Successfully connected to 10.0.0.175 port 554
[rtsp @ 000002982bf92800] SDP:=    0KB vq=    0KB sq=    0B
v=0
o=- 42291144 1 IN IP4 10.0.0.175
s=Session streamed by "TP-LINK RTSP Server"
i=stream1
t=0 0
a=tool:TP-LINK Streaming Media v2015.05.12
a=type:broadcast
a=control:*
a=range:npt=0-
a=x-qt-text-nam:Session streamed by "TP-LINK RTSP Server"
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:8192
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1; profile-level-id=000000; sprop-parameter-sets=(null),(null)
a=control:track1
m=audio 0 RTP/AVP 8
c=IN IP4 0.0.0.0
b=AS:64
a=rtpmap:8 PCMA/8000
a=control:track2

Failed to parse interval end specification ''
[rtsp @ 000002982bf92800] video codec set to: h264
[rtsp @ 000002982bf92800] RTP Packetization Mode: 1
[rtsp @ 000002982bf92800] RTP Profile IDC: 0 Profile IOP: 0 Level: 0
[rtsp @ 000002982bf92800] Extradata set to 0000000000000000 (size: 0)
[rtsp @ 000002982bf92800] audio codec set to: pcm_alaw
[rtsp @ 000002982bf92800] audio samplerate set to: 8000
[rtsp @ 000002982bf92800] audio channels set to: 1
[rtsp @ 000002982bf92800] setting jitter buffer size to 00B
[rtsp @ 000002982bf92800] setting jitter buffer size to 00B
[rtsp @ 000002982bf92800] hello state=0
Failed to parse interval end specification ''
[rtsp @ 000002982bf92800] max_analyze_duration 60000000 reached at 60000000 microseconds st:1
[rtsp @ 000002982bf92800] Could not find codec parameters for stream 0 (Video: h264, 1 reference frame, none): unspecified size
Consider increasing the value for the 'analyzeduration' (60000000) and 'probesize' (60000000) options
Input #0, rtsp, from 'rtsp://myrtspuser:myrtsppass@10.0.0.175:554/stream1':
  Metadata:
    title           : Session streamed by "TP-LINK RTSP Server"
    comment         : stream1
  Duration: N/A, start: 0.000000, bitrate: 64 kb/s
  Stream #0:0, 0, 1/90000: Video: h264, 1 reference frame, none, 90k tbr, 90k tbn
  Stream #0:1, 1877, 1/8000: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
detected 8 logical cores
[ffplay_abuffer @ 00000298250de4c0] Setting 'sample_rate' to value '8000'
[ffplay_abuffer @ 00000298250de4c0] Setting 'sample_fmt' to value 's16'
[ffplay_abuffer @ 00000298250de4c0] Setting 'time_base' to value '1/8000'
[ffplay_abuffer @ 00000298250de4c0] Setting 'channel_layout' to value 'mono'
[ffplay_abuffer @ 00000298250de4c0] tb:1/8000 samplefmt:s16 samplerate:8000 chlayout:mono
[AVFilterGraph @ 000002982c662c40] query_formats: 2 queried, 2 merged, 1 already done, 0 delayed
Audio frame changed from rate:8000 ch:1 fmt:s16 layout:mono serial:-1 to rate:8000 ch:1 fmt:s16 layout:mono serial:1
[ffplay_abuffer @ 00000298250dddc0] Setting 'sample_rate' to value '8000'
[ffplay_abuffer @ 00000298250dddc0] Setting 'sample_fmt' to value 's16'
[ffplay_abuffer @ 00000298250dddc0] Setting 'time_base' to value '1/8000'
[ffplay_abuffer @ 00000298250dddc0] Setting 'channel_layout' to value 'mono'
[ffplay_abuffer @ 00000298250dddc0] tb:1/8000 samplefmt:s16 samplerate:8000 chlayout:mono
[ffplay_abuffersink @ 00000298250de8c0] auto-inserting filter 'auto_aresample_0' between the filter 'ffplay_abuffer' and the filter 'ffplay_abuffersink'
[AVFilterGraph @ 000002982c662c40] query_formats: 2 queried, 0 merged, 3 already done, 0 delayed
[auto_aresample_0 @ 00000298250dd2c0] [SWR @ 000002982c7a7640] Using s16p internally between filters
[auto_aresample_0 @ 00000298250dd2c0] [SWR @ 000002982c7a7640] Matrix coefficients:
[auto_aresample_0 @ 00000298250dd2c0] [SWR @ 000002982c7a7640] FL: FC:0.707107
[auto_aresample_0 @ 00000298250dd2c0] [SWR @ 000002982c7a7640] FR: FC:0.707107
[auto_aresample_0 @ 00000298250dd2c0] ch:1 chl:mono fmt:s16 r:8000Hz -> ch:2 chl:stereo fmt:s16 r:8000Hz
 556.75 A-V:    nan fd=   0 aq=  496KB vq=    0KB sq=    0B

```

Could you please provide further guidance or additional steps I can take to resolve this issue?

Best Regards

  @Solla-topee 

How did you resolve this issue?

 Hi @Levante,

We were unable to resolve the issue. I had to buy a new camera.

Just letting you know. Thanks.