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

[Andrew Buchanan]

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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