Error reading output of an external command

Hello, as I am rather new in using serviio please do not judge too strict if I miss or misunderstand something.
Do not know when but I`ve started to have few troubles with online streaming.
First picture is going a little bit faster then sound (on some channels) - honestly didn't do any research because I do not watch this channels however my wife is not very happy about this, so may be someone knows how to deal with this?
Second - the most annoying thing is that some channels play for 1-10 min, some days 15 and after that freeze and sometime it continues and some time I've got message that the file type is not supported, however when start/open it again it works. In log file receive several messages:
1. [ProcessExecutor] Process /volume1/@appstore/Serviio/bin/ffmpeg has a return code of 137! This is a possible error. Detailed output follows.
[flv @ 0x80f09e0] max bitrate possibly too small or try trellis with large lmax or increase qmax
frame= 42 fps= 41 q=16.3 size= 256kB time=00:00:01.63 bitrate=1285.7kbits/s
frame= 74 fps= 49 q=6.1 size= 378kB time=00:00:02.68 bitrate=1154.0kbits/s
frame= 106 fps= 52 q=15.4 size= 551kB time=00:00:03.64 bitrate=1239.4kbits/s
frame= 116 fps= 45 q=9.6 size= 580kB time=00:00:03.96 bitrate=1199.4kbits/s
2. WARN [OutputTextReader] Error reading output of an external command:Stream closed

Made a research in forum didn't find any good answer for me.

Log file is rather big and it is impossible to add as an attachment.

Some extractions from the LOGFILE:
2015-04-08 20:55:54,953 WARN [ProcessExecutor] Process /volume1/@appstore/Serviio/bin/ffmpeg has a return code of 1! This is a possible error. Detailed output follows.
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
[http @ 0x8093fe0] HTTP error 522 Origin Connection Time-out
[hls,applehttp @ 0x8088f00] Error when loading first segment 'http://live.oneplay.tv/STREAM/01/430/03-40/337-20150408T194922.ts'
http://live.oneplay.tv/reproducir/309.m3u8: Input/output error

2015-04-08 20:55:54,953 DEBUG [TranscodingJobListener] Transcoding finished; successful: false
2015-04-08 20:58:02,326 DEBUG [TranscodingJobListener] Error updating FFmpeg output for line 'frame= 1320 fps= 22 q=-1.0 size= 8234kB time=-577014:-32:-22.-77 bitrate=N/A ': For input string: "0.-77"
2015-04-08 20:58:02,331 DEBUG [TranscodingJobListener] Transcoding finished; successful: true
2015-04-08 20:58:02,845 DEBUG [DiscoverySSDPMessageListener] Received a valid M-SEARCH message for search target urn:schemas-upnp-org:device:InternetGatewayDevice:1 from address /192.168.1.6:65292s
2015-04-08 20:58:03,257 DEBUG [WebServer] I/O error: Write end dead
2015-04-08 20:58:05,881 DEBUG [DiscoverySSDPMessageListener] Received a valid M-SEARCH message for search target urn:schemas-upnp-org:device:InternetGatewayDevice:1 from address /192.168.1.6:65292s
2015-04-08 20:58:08,882 DEBUG [DiscoverySSDPMessageListener] Received a valid M-SEARCH message for search target urn:schemas-upnp-org:device:InternetGatewayDevice:1 from address /192.168.1.6:65292s
2015-04-08 20:58:11,891 DEBUG [DiscoverySSDPMessageListener] Received a valid M-SEARCH message for search target urn:schemas-upnp-org:device:InternetGatewayDevice:1 from address /192.168.1.6:65292s
2015-04-08 20:58:17,811 DEBUG [SearchManager] Committing search index

Have a hope that someone can help me with this.

If necessary will make LOGFILE, but don't know hot to make it smaller or how to use filter.

Some more information fro logfile:

2015-04-08 21:05:54,835 WARN [ProcessExecutor] Process /volume1/@appstore/Serviio/bin/ffmpeg has a return code of 137! This is a possible error. Detailed output follows.
frame= 1292 fps= 39 q=-1.0 size= 8205kB time=00:00:43.30 bitrate=1552.2kbits/s
frame= 1321 fps= 39 q=-1.0 size= 8425kB time=00:00:44.06 bitrate=1566.1kbits/s
frame= 1354 fps= 40 q=-1.0 size= 8625kB time=00:00:45.22 bitrate=1562.4kbits/s
frame= 1381 fps= 40 q=-1.0 size= 8797kB time=00:00:46.14 bitrate=1561.5kbits/s
frame= 1426 fps= 40 q=-1.0 size= 9013kB time=00:00:47.65 bitrate=1549.4kbits/s
2015-04-08 21:07:40,726 WARN [OutputBytesReader] Error reading bytes stream from external process: Stream closed

[zip]

Looks like ffmpeg crashes for some reason. Won't be able to help, unless you get a newer ffmpeg version which might have it fixed.

Will appreciate if someone will help me to update FFMPEG player on SYNOLOGY 713+ DSM5.1