[Asterisk-video] rc buffer underflows/vbv buffer overflows

[Sergio Garcia Murillo]

Hi Andrew

The buffer underflow/overflow are normal, just ffmpeg buffer rate 
control messages. The "gs" means gop size, i.e. intra frame period (50 
means 1 I-frame per 50 frames).

BR
Sergio

Andrew Buchanan escribió:
>
> Hi,
>
>  
>
> I'm just getting started with app_rtsp/app_transcoder and I'm getting 
> a lot of messages about overflow/underflow.  For the most part the 
> video stream looks ok without much packet loss.  The source stream is 
> mp4v 320x240 8 fps, 128 kbps, I'm transcoding it to cif which is 
> higher that what the example had used.  Also if anybody knows what the 
> gs=50 part means.  And the example for app_transcode I believe should 
> use pipes instead of commas?
>
>  
>
>  
>
> [Jul 11 15:39:49] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:50] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:50] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:50] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:50] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
>  [Jul 11 15:39:53] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:53] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:53] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:53] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
>  [Jul 11 15:39:56] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
> [Jul 11 15:39:56] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
>  [Jul 11 15:40:00] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] rc buffer underflow
>
>  [Jul 11 15:40:11] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] vbv buffer overflow
>
> [Jul 11 15:40:12] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] vbv buffer overflow
>
> [Jul 11 15:40:14] DEBUG[28251]: app_transcoder.c:1090 
> av_log_asterisk_callback: [h263 @ 0xb725f8b0] vbv buffer overflow
>
>  
>
> Extensions.conf
>
> [default]
>
> exten => 201,1,Answer
>
> exten => 
> 201,n,transcode(|s at camera|h263 at cif/fps=8/kb=50/qmin=4/qmax=12/gs=50)
>
> exten => 201,n,HangUp
>
>  
>
> exten => 202,1,Answer
>
> exten => 202,n,rtsp(rtsp://ip/live2.sdp)
>
> exten => 202,n,HangUp
>
>  
>
> [camera]
>
> exten => s,1,Answer
>
> exten => s,n,rtsp(rtsp://ip/live2.sdp)
>
> exten => s,n,HangUp
>
> ------------------------------------------------------------------------
>
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