Need help with dvb_teletext.

[dinhka]

Summary of the bug: I want to select exact language in a dvb_teletext. In my case, the dvb_teletext stream has 2 languages, swe (sweden) and fin (finland). How i select SWE language ?

How to reproduce:
ffmpeg -i input -filter_complex [0:v][0:s:0]overlay=x=120:y=310[v] -map [v] -map 0:a:0 -tune zerolatency -rtbufsize 64M -af aresample=async=1 -acodec libfdk_aac -b:a 48k -ar 48000 -ac 2 -vcodec libx264 -b:v 900k -profile:v main -preset:v faster -x264opts keyint=250 -y -s 720x576 -r 25 -vsync vfr -f flv -f flv rtmp://ip/live/test
[mpeg2video @ 0x23d37c0] Invalid frame dimensions 0x0.

Last message repeated 8 times

Input #0, mpegts, from '​http://ip':

Duration: N/A, start: 90879.289622, bitrate: 384 kb/s
Program 201

Stream #0:0[0x3e9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x3ea](swe): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s
Stream #0:2[0x192](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s
Stream #0:3[0xc9](swe,fin): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006), 492x250

[libx264 @ 0x240bd40] using SAR=64/45
[libx264 @ 0x240bd40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x240bd40] profile Main, level 3.0
[libx264 @ 0x240bd40] 264 - core 142 r2491 24e4fed - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - ​http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=4 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=9 lookahead_threads=9 sliced_threads=1 slices=9 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=abr mbtree=0 bitrate=900 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'rtmp://IP/live4/test':

Metadata:

encoder : Lavf56.15.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 900 kb/s, 25 fps, 1k tbn, 25 tbc (default)
Metadata:

encoder : Lavc56.13.100 libx264

Stream #0:1(swe): Audio: aac (libfdk_aac) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, s16, 48 kb/s
Metadata:

encoder : Lavc56.13.100 libfdk_aac

Stream mapping:

Stream #0:0 (mpeg2video) -> overlay:main (graph 0)
Stream #0:3 (libzvbi_teletextdec) -> overlay:overlay (graph 0)
overlay (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (mp2 (native) -> aac (libfdk_aac))

Press [q] to stop, ? for help

[Carl Eugen Hoyos]

Do you want to report a bug?
If you have a question concerning FFmpeg or if you need support, please ask on the user mailing list, this is not a support forum.

[Carl Eugen Hoyos]

Feel free to reopen this ticket if you can add the missing information.