[FFmpeg-user] Problems with ffmpeg

[JULIAN GARDNER]

Just upgraded to latest git and im getting a problem i never had before.

Im transcoding Channel4HD down to a lower rate but every now and then it stops working, looking in the log i see

frame=160734 fps= 25 q=21.0 size=  954829kB time=01:47:08.35 bitrate=1216.8kbits/s dup=31 drop=0    
Input stream #0:4 frame changed from rate:48000 fmt:s16 ch:2 chl:stereo to rate:48000 fmt:s16 ch:6 chl:5.1(side)
2012-10-03_22:09:42.45055 -async is forwarded to lavfi similarly to -af aresample=min_comp=0.001:min_hard_comp=0.100000.
2012-10-03_22:09:42.45390 [graph 1 aresample for input stream 0:4 @ 0x6f98b80] [SWR @ 0x2ca8da0] Failed to compensate for timestamp delta of 6428.728021

This is what ffmpeg says about the stream on restart

2012-10-03_20:22:38.04839 [mpegts @ 0x2a10340] Estimating duration from bitrate, this may be inaccurate
2012-10-03_20:22:38.04849 Input #0, mpegts, from 'udp://227.29.82.208:1234?reuse&fifo_size=50000':
2012-10-03_20:22:38.04850   Duration: N/A, start: 35407.144378, bitrate: 576 kb/s
2012-10-03_20:22:38.04850   Program 21200 
2012-10-03_20:22:38.04851     Metadata:
2012-10-03_20:22:38.04851       service_name    : Channel 4 HD
2012-10-03_20:22:38.04851       service_provider: BSkyB
2012-10-03_20:22:38.04852     Stream #0:0[0x901]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 54.33 fps, 50 tbr, 90k tbn, 50 tbc
2012-10-03_20:22:38.04853     Stream #0:1[0x903](NAR): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16, 192 kb/s
2012-10-03_20:22:38.04854     Stream #0:2[0x905](eng): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
2012-10-03_20:22:38.04855     Stream #0:3[0x904](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
2012-10-03_20:22:38.04856     Stream #0:4[0x902](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, s16, 384 kb/s

and then a couple of minutes later
2012-10-03_22:22:16.30445 frame= 5432 fps= 26 q=20.0 size=   32145kB time=00:03:36.44 bitrate=1216.6kbits/s dup=49 drop=0    ^Mframe= 5445 fps= 26 q=23.0 size=   32202kB time$
2012-10-03_22:22:20.36222 -async is forwarded to lavfi similarly to -af aresample=min_comp=0.001:min_hard_comp=0.100000.
2012-10-03_22:22:20.80007 [libfaac @ 0x24afee0] Que input is backward in time
2012-10-03_22:22:20.80529 frame= 5539 fps= 26 q=24.0 size=   32837kB time=00:03:40.64 bitrate=1219.2kbits/s dup=49 drop=0    ^Mst:0 PTS: 0 DTS: 0 < 19860481 invalid, clipping
2012-10-03_22:22:20.85381 [hls @ 0x2b0b160] st:0 PTS: 2880 DTS: 2880 < 19860482 invalid, clipping
2012-10-03_22:22:20.85431 [hls @ 0x2b0b160] st:0 PTS: 5760 DTS: 5760 < 19860483 invalid, clipping
2012-10-03_22:22:20.85448 [hls @ 0x2b0b160] st:0 PTS: 8640 DTS: 8640 < 19860484 invalid, clipping

Now the last version i had running on this machine was 38xxx.

Anybody seen this and have a clue on fixing it, or should i downgrade back to an earlier version because something looks broken.

I could try and record the full stream and see if i can catch the problem.

joolz