qnap Transcoding with Serviio v1.2

Hi,
Hello
I really have problems with transcoding any movies when I want to play them at medium resolution, I get just a lot of flicker.
I have installed all library and latest version of serviio (1.2) but it makes no difference.
Can't really find the fault, so I hope that there is someone in this forum that can help?
----From Cli --------------------------------------------------------------------------------
IInput #0, matroska,webm, from '/share/Multimedia/300/300.mkv':
Metadata:
MAJOR_BRAND : isom
MINOR_VERSION : 1
COMPATIBLE_BRANDS: isomavc1
CREATION_TIME : 2011-08-17 12:05:58
ENCODER : Lavf53.4.0
Duration: 01:56:38.91, start: 0.000000, bitrate: 5852 kb/s
Stream #0:0(und): Video: h264 (Main), yuv420p, 1280x528 [SAR 1:1 DAR 80:33], 23.98 fps, 23.98 tbr, 1k tbn, 47.96 tbc (default)
Metadata:
CREATION_TIME : 2011-08-17 12:05:58
LANGUAGE : und
Stream #0:1(eng): Audio: aac, 48000 Hz, 5.1, s16 (default)
Metadata:
CREATION_TIME : 2011-08-17 12:06:53
LANGUAGE : eng
[graph 0 input from stream 0:0 @ 0x8e24020] w:1280 h:528 pixfmt:yuv420p tb:1/1000 fr:1199/50 sar:1/1 sws_param:flags=2
[output stream 0:0 @ 0x8e262c0] No opaque field provided
[Parsed_scale_0 @ 0x8e23c80] w:1280 h:528 fmt:yuv420p sar:1/1 -> w:1164 h:480 fmt:yuv420p sar:3200/3201 flags:0x4
[graph 1 input from stream 0:1 @ 0x8f19fa0] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x3f
[auto-inserted resampler 0 @ 0x8f5f180] chl:5.1 fmt:s16 r:48000Hz -> chl:stereo fmt:s16 r:44100Hz
[flv @ 0x8e24760] impossible bitrate constraints, this will fail
Output #0, flv, to '/root/.serviio/tmp/Serviio/transcoding-temp-3251-flv_player-MEDIUM-103.0-6895.0.stf':
Metadata:
MAJOR_BRAND : isom
MINOR_VERSION : 1
COMPATIBLE_BRANDS: isomavc1
encoder : Lavf54.15.102
Stream #0:0(und): Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 1164x480 [SAR 3200:3201 DAR 80:33], q=2-31, 18360 kb/s, 1k tbn, 23.98 tbc (default)
Metadata:
CREATION_TIME : 2011-08-17 12:05:58
LANGUAGE : und
Stream #0:1(eng): Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, s16, 192 kb/s (default)
Metadata:
CREATION_TIME : 2011-08-17 12:06:53
LANGUAGE : eng
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> flv)
Stream #0:1 -> #0:1 (aac -> libmp3lame)
Press [q] to stop, [?] for help
[h264 @ 0x911ff80] top block unavailable for requested intra4x4 mode -1 at 13 0
[h264 @ 0x911ff80] error while decoding MB 13 0, bytestream (81216)
[h264 @ 0x911ff80] concealing 2640 DC, 2640 AC, 2640 MV errors
DTS -289, next:-701 st:0 invalid dropping
PTS -206, next:-701 invalid dropping st:0
----From Log --------------------------------------------------------------------------------
[FFMPEGWrapper] Invoking FFmpeg to transcode video file: /share/Multimedia/300/300.mkv
2013-03-07 20:50:48,264 DEBUG [ProcessExecutor] Starting /root/.serviio/opt/bin/ffmpeg -threads 2 -i /share/Multimedia/300/300.mkv -y -c:v flv -b:v 18360k -maxrate:v 18360k -bufsize:v 18360k -vf scale=1164:480 -r 24000/1001 -g 15 -c:a libmp3lame -b:a 192k -ar 44100 -ac 2 -map 0:0 -map 0:1 -sn -f flv /root/.serviio/tmp/Serviio/transcoding-temp-3251-flv_player-MEDIUM.stf
2013-03-07 20:50:48,764 DEBUG [FileBasedTranscodingDeliveryStrategy] Sending transcoding stream
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [MediaItemDAOImpl] Marking MediaItem (id = 3251) as read
2013-03-07 20:50:48,831 DEBUG [LocalContentCacheDecorator] Cleared cache (local_resetafterplay)
2013-03-07 20:50:48,832 DEBUG [GETMethodProcessor] Entity will be consumed till the end
2013-03-07 20:50:48,832 DEBUG [GETMethodProcessor] Stream entity has length: -1
Hello
I really have problems with transcoding any movies when I want to play them at medium resolution, I get just a lot of flicker.

I have installed all library and latest version of serviio (1.2) but it makes no difference.
Can't really find the fault, so I hope that there is someone in this forum that can help?
----From Cli --------------------------------------------------------------------------------
IInput #0, matroska,webm, from '/share/Multimedia/300/300.mkv':
Metadata:
MAJOR_BRAND : isom
MINOR_VERSION : 1
COMPATIBLE_BRANDS: isomavc1
CREATION_TIME : 2011-08-17 12:05:58
ENCODER : Lavf53.4.0
Duration: 01:56:38.91, start: 0.000000, bitrate: 5852 kb/s
Stream #0:0(und): Video: h264 (Main), yuv420p, 1280x528 [SAR 1:1 DAR 80:33], 23.98 fps, 23.98 tbr, 1k tbn, 47.96 tbc (default)
Metadata:
CREATION_TIME : 2011-08-17 12:05:58
LANGUAGE : und
Stream #0:1(eng): Audio: aac, 48000 Hz, 5.1, s16 (default)
Metadata:
CREATION_TIME : 2011-08-17 12:06:53
LANGUAGE : eng
[graph 0 input from stream 0:0 @ 0x8e24020] w:1280 h:528 pixfmt:yuv420p tb:1/1000 fr:1199/50 sar:1/1 sws_param:flags=2
[output stream 0:0 @ 0x8e262c0] No opaque field provided
[Parsed_scale_0 @ 0x8e23c80] w:1280 h:528 fmt:yuv420p sar:1/1 -> w:1164 h:480 fmt:yuv420p sar:3200/3201 flags:0x4
[graph 1 input from stream 0:1 @ 0x8f19fa0] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x3f
[auto-inserted resampler 0 @ 0x8f5f180] chl:5.1 fmt:s16 r:48000Hz -> chl:stereo fmt:s16 r:44100Hz
[flv @ 0x8e24760] impossible bitrate constraints, this will fail
Output #0, flv, to '/root/.serviio/tmp/Serviio/transcoding-temp-3251-flv_player-MEDIUM-103.0-6895.0.stf':
Metadata:
MAJOR_BRAND : isom
MINOR_VERSION : 1
COMPATIBLE_BRANDS: isomavc1
encoder : Lavf54.15.102
Stream #0:0(und): Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 1164x480 [SAR 3200:3201 DAR 80:33], q=2-31, 18360 kb/s, 1k tbn, 23.98 tbc (default)
Metadata:
CREATION_TIME : 2011-08-17 12:05:58
LANGUAGE : und
Stream #0:1(eng): Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, s16, 192 kb/s (default)
Metadata:
CREATION_TIME : 2011-08-17 12:06:53
LANGUAGE : eng
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> flv)
Stream #0:1 -> #0:1 (aac -> libmp3lame)
Press [q] to stop, [?] for help
[h264 @ 0x911ff80] top block unavailable for requested intra4x4 mode -1 at 13 0
[h264 @ 0x911ff80] error while decoding MB 13 0, bytestream (81216)
[h264 @ 0x911ff80] concealing 2640 DC, 2640 AC, 2640 MV errors
DTS -289, next:-701 st:0 invalid dropping
PTS -206, next:-701 invalid dropping st:0
----From Log --------------------------------------------------------------------------------
[FFMPEGWrapper] Invoking FFmpeg to transcode video file: /share/Multimedia/300/300.mkv
2013-03-07 20:50:48,264 DEBUG [ProcessExecutor] Starting /root/.serviio/opt/bin/ffmpeg -threads 2 -i /share/Multimedia/300/300.mkv -y -c:v flv -b:v 18360k -maxrate:v 18360k -bufsize:v 18360k -vf scale=1164:480 -r 24000/1001 -g 15 -c:a libmp3lame -b:a 192k -ar 44100 -ac 2 -map 0:0 -map 0:1 -sn -f flv /root/.serviio/tmp/Serviio/transcoding-temp-3251-flv_player-MEDIUM.stf
2013-03-07 20:50:48,764 DEBUG [FileBasedTranscodingDeliveryStrategy] Sending transcoding stream
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [VideoDeliveryEngine] Found Format profile for transcoded file 300.mkv: FLV
2013-03-07 20:50:48,765 DEBUG [MediaItemDAOImpl] Marking MediaItem (id = 3251) as read
2013-03-07 20:50:48,831 DEBUG [LocalContentCacheDecorator] Cleared cache (local_resetafterplay)
2013-03-07 20:50:48,832 DEBUG [GETMethodProcessor] Entity will be consumed till the end
2013-03-07 20:50:48,832 DEBUG [GETMethodProcessor] Stream entity has length: -1