How do we test the new Transcoding support?

Martin Ayla · 2013-05-14T18:05:49+00:00

Hi I just upgraded to the latest unstable release and would like to try the transcoding support. I have tried the john-tornblom branch and it works fine wi...

markus karlsson

having some truoble with the transcoding.

it transcodes the videostream fine to h264 , but i just won't transcode too aac. getting this output.

dec 23 09:13:30.111 [ NOTICE] libav: using SAR=64/45
dec 23 09:13:30.130 [ NOTICE] libav: using cpu capabilities: MMX2 SSE2Slow SlowCTZ
dec 23 09:13:30.137 [ NOTICE] libav: profile Constrained Baseline, level 2.1
dec 23 09:13:30.137 [ NOTICE] libav: 264 - core 140 r2 1ca7bb9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=2 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=25 keyint_min=2 scenecut=40 intra_refresh=0 rc_lookahead=25 rc=abr mbtree=1 bitrate=207 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=30 qpstep=4 vbv_maxrate=3670 vbv_bufsize=1835 nal_hrd=none filler=0 ip_ratio=1.41 aq=1:1.00
dec 23 09:13:30.140 [WARNING] libav: Warning: data is not aligned! This can lead to a speedloss
dec 23 09:13:30.365 [ ERROR] libav: Specified sample format s16p is invalid or not supported
dec 23 09:13:30.365 [ ERROR] transcode: Unable to open libfdk_aac encoder
dec 23 09:13:42.371 [ ERROR] mkv: Live stream: Write failed -- Brutet rör
dec 23 09:13:42.373 [WARNING] webui: Stop streaming /stream/channelid/13?ticket=0F12C77C17ACF5B2954257828701CFEC12758B9D&mux=matroska&transcode=1&resolution=288&acodec=AAC&vcodec=H264&scodec=NONE, muxer reported errors
dec 23 09:13:42.411 [ INFO] subscription: "HTTP" unsubscribing from "TV4"
dec 23 09:13:42.449 [ NOTICE] libav: frame I:12 Avg QP:21.68 size: 11701
dec 23 09:13:42.449 [ NOTICE] libav: frame P:267 Avg QP:23.43 size: 934
dec 23 09:13:42.449 [ NOTICE] libav: mb I I16..4: 41.5% 0.0% 58.5%
dec 23 09:13:42.449 [ NOTICE] libav: mb P I16..4: 0.8% 0.0% 0.8% P16..4: 20.5% 4.1% 1.7% 0.0% 0.0% skip:72.0%
dec 23 09:13:42.449 [ NOTICE] libav: final ratefactor: -34.36
dec 23 09:13:42.449 [ NOTICE] libav: coded y,uvDC,uvAC intra: 56.0% 15.5% 12.0% inter: 8.4% 2.3% 0.5%
dec 23 09:13:42.449 [ NOTICE] libav: i16 v,h,dc,p: 8% 73% 3% 16%
dec 23 09:13:42.449 [ NOTICE] libav: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 23% 18% 6% 6% 6% 5% 8% 6%
dec 23 09:13:42.449 [ NOTICE] libav: i8c dc,h,v,p: 86% 10% 4% 1%

dec 23 09:13:42.450 [ NOTICE] libav: ref P L0: 79.1% 9.6% 11.3%

that is when using tvhguide on android.

i have tried libfdk_aac with ffmpeg and it works fine. it is just that tvheadend fails to find it it seems.
is it possible to recstrict tvheadend from using aac so that is uses something else like vorbis .

is it just me having this issue ? or is anyone elses the same problem and solved it.

thanks for your replys

Frans Hettinga

I have the same issues! I build ffmpeg my self with libfdk_aac. If i use a .WAV to transcode it to AAC it's working nice. But i get this error in tvheadend:

2014-01-17 20:32:34.063 transcode: 1:MPEG2VIDEO 720x576 ==> H264 480x384
2014-01-17 20:32:34.064 transcode: 2:MPEG2AUDIO ==> AAC
2014-01-17 20:32:34.064 subscription: "HTTP" subscribing on "RTL4", weight: 100, adapter: "STV0367 DVB-C DVB-T : DVB-C #1", network: "CAI Harderwijk", mux: "530000", provider: "CAIW Media", service: "RTL4"
2014-01-17 20:32:34.340 libav: using SAR=64/45
2014-01-17 20:32:34.345 libav: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
2014-01-17 20:32:34.347 libav: profile Constrained Baseline, level 2.1
2014-01-17 20:32:34.348 libav: 264 - core 140 r2 1ca7bb9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=4 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=25 keyint_min=2 scenecut=40 intra_refresh=0 rc_lookahead=25 rc=abr mbtree=1 bitrate=368 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=30 qpstep=4 vbv_maxrate=3670 vbv_bufsize=1835 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
2014-01-17 20:32:34.366 libav: Specified sample format s16p is invalid or not supported

2014-01-17 20:32:34.366 transcode: Unable to open libfdk_aac encoder

I'm using Debian Jessie!

Piotr Kuchciak

I have a problem. When i want to watch tv by webGUI i see image but i have not an audio. In sys log i have this info:
2014-04-09 17:04:06.530 mpegts: 586000 - tuning on Afatech AF9033 (DVB-T) : DVB-T #1
2014-04-09 17:04:06.557 subscription: "HTTP" subscribing on "4fun.TV", weight: 100, adapter: "Afatech AF9033 (DVB-T) : DVB-T #1", network: "DVB-T_Cabel", mux: "586000", provider: "nc+", service: "4fun.TV"
2014-04-09 17:04:07.069 transcode: 1:MPEG2VIDEO 0x0 > H264 -32768x0
2014-04-09 17:04:07.071 transcode: 2:MPEG2AUDIO > AAC
2014-04-09 17:04:07.998 transcode: 1:MPEG2VIDEO 704x576 > H264 352x288
2014-04-09 17:04:08.000 transcode: 2:MPEG2AUDIO > AAC
2014-04-09 17:04:08.145 libav: using SAR=16/11
2014-04-09 17:04:08.157 libav: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
2014-04-09 17:04:08.168 libav: profile Constrained Baseline, level 2.1
2014-04-09 17:04:08.168 libav: 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=4 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=25 keyint_min=2 scenecut=40 intra_refresh=0 rc_lookahead=25 rc=abr mbtree=1 bitrate=202 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=30 qpstep=4 vbv_maxrate=3670 vbv_bufsize=1835 nal_hrd=none filler=0 ip_ratio=1.41 aq=1:1.00
2014-04-09 17:04:08.534 libav: Specified sample_fmt is not supported.

2014-04-09 17:04:08.534 transcode: Unable to open libvo_aacenc encoder

I installed apt-get install libvo-aacenc-dev in version:
root@Synology_DS713:/# apt-cache policy libvo-aacenc-dev
libvo-aacenc-dev:
Installed: 0.1.3-1
Candidate: 0.1.3-1
Version table:* 0.1.3-1 0
50 http://ftp.fr.debian.org/debian/ sid/main i386 Packages
100 /var/lib/dpkg/status
0.1.2-1 0
990 http://ftp.fr.debian.org/debian/ wheezy/main i386 Packages
990 http://ftp.at.debian.org/debian/ wheezy/main i386 Packages

root@Synology_DS713:/#

Still no sound. I use it on debian chroot on my synology. Please help me.
My version TVHeadend is 3.9.509

Wolfgang Ferl

Geoff Geoff wrote:
> Hi Alex, many thanks for your help I feel I'm getting somewhere and understand the program. Everything works ok thanks however when access a channel with DD5.1 it comes up with
>
> Sep 01 22:27:47.556 [ ERROR] libav: Unable to set encoding parameters
> Sep 01 22:27:47.556 [ ERROR] transcode: Unable to open libvo_aacenc encoder
>

> any suggestions on this?

Did anybody got this Problem solved? Here transcoding works fine except broadcasts with DD 5.1.

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