Opened 12 years ago
Closed 11 years ago
#2223 closed defect (fixed)
Muxing dvb_teletext in mpegts does not work
| Reported by: | burek | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avformat |
| Version: | git-master | Keywords: | mpegts dvb_teletext |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
Summary of the bug:
When ffmpeg is instructed to do "-c copy" on input stream, it unexpectedly converts one of the input streams of type dvb_teletext into dvb_subtitle. More info can be found here:
http://ffmpeg.gusari.org/viewtopic.php?f=16&t=811&p=1527
How to reproduce:
The original scenario, where the possible bug was discovered, used a command line like this:
ffmpeg -i udp://234.5.245.105:20000 -map 0 -codec copy -f mpegts stream.ts
ffmpeg version 1.1.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Jan 21 2013 14:57:54 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-filter=movie --enable-static --enable-shared --enable-libfreetype --enable-libaacplus
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[mpegts @ 0x1b5c820] Unable to seek back to the start
[mpeg2video @ 0x1ba2220] 0x0 is invalid
Last message repeated 15 times
[mpegts @ 0x1b5c820] max_analyze_duration 5000000 reached at 5016000
[mpegts @ 0x1b5c820] Estimating duration from bitrate, this may be inaccurate
Input #0, mpegts, from 'udp://234.5.245.105:20000':
Duration: N/A, start: 93705.929667, bitrate: 224 kb/s
Program 140
Metadata:
service_name : ANTENA 3
service_provider: EtherTV
Stream #0:0[0x137](spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:1[0x130](und): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Stream #0:2[0x12f](spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
Stream #0:3[0x12e](spa): [b]Subtitle: dvb_teletext[/b] ([6][0][0][0] / 0x0006)
Stream #0:4[0x12d]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 704x576 [SAR 16:11 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Output #0, mpegts, to 'stream.ts':
Metadata:
encoder : Lavf54.59.106
Stream #0:0(spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:1(und): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, 96 kb/s
Stream #0:2(spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, 128 kb/s
Stream #0:3(spa): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream #0:4: Video: mpeg2video ([2][0][0][0] / 0x0002), yuv420p, 704x576 [SAR 16:11 DAR 16:9], q=2-31, 25 fps, 90k tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Stream #0:2 -> #0:2 (copy)
Stream #0:3 -> #0:3 (copy)
Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
frame= 914 fps= 29 q=-1.0 Lsize= 17315kB time=00:00:37.79 bitrate=3753.4kbits/s
video:13770kB audio:1013kB subtitle:1173 global headers:0kB muxing overhead 8.519125%
Received signal 2: terminating.
but when checked with ffprobe, the result was:
ffprobe -i stream.ts
ffprobe version 1.1.1 Copyright (c) 2007-2013 the FFmpeg developers
built on Jan 21 2013 14:57:54 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-filter=movie --enable-static --enable-shared --enable-libfreetype --enable-libaacplus
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[mpegts @ 0xac2ca0] max_analyze_duration 5000000 reached at 5016000
[NULL @ 0xac6e60] start time is not set in estimate_timings_from_pts
[NULL @ 0xac8be0] start time is not set in estimate_timings_from_pts
Input #0, mpegts, from 'stream.ts':
Duration: 00:00:37.47, start: 1.760378, bitrate: 3785 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100](spa): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:1[0x101](und): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Stream #0:2[0x102](spa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
Stream #0:3[0x103](spa): [b]Subtitle: dvb_subtitle[/b] ([6][0][0][0] / 0x0006)
Stream #0:4[0x104]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 704x576 [SAR 16:11 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Attachments (3)
Change History (17)
comment:1 by , 12 years ago
comment:2 by , 12 years ago
AFAICS, this is reproducible with the sample you uploaded for ticket 2086 http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2086/.
Input #0, mpegts, from '/tmp/teletextsubtitles.ts.part':
Duration: 00:00:15.36, start: 0.091256, bitrate: 15069 kb/s
Program 137
Stream #0:0[0x30]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x40](ita): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:2[0x41](und): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:3[0x6a](ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Output #0, mpegts, to '/tmp/out.ts':
Metadata:
encoder : Lavf54.61.104
Stream #0:0(ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream mapping:
Stream #0:3 -> #0:0 (copy)
Input #0, mpegts, from '/tmp/out.ts':
Duration: N/A, bitrate: N/A
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100](ita): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
I suspect this is a muxer problem: ffmpeg does not recode the subtitle packets, it only incorrectly writes the nature of the stream.
comment:3 by , 12 years ago
| Component: | undetermined → avformat |
|---|---|
| Keywords: | mpegts dvb_teletext added |
| Reproduced by developer: | set |
| Status: | new → open |
| Version: | unspecified → git-master |
Attached patch does not really help.
$ ffmpeg -i teletextsubtitles.ts -vn -an -scodec copy out.ts
ffmpeg version N-49553-g13eb9fc Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 3 2013 14:58:47 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 17.100 / 52. 17.100
libavcodec 54. 91.100 / 54. 91.100
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.100 / 3. 35.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[h264 @ 0x286dee0] non-existing SPS 0 referenced in buffering period
[h264 @ 0x286dee0] non-existing PPS referenced
[h264 @ 0x286dee0] non-existing SPS 0 referenced in buffering period
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] no frame!
...
[h264 @ 0x286dee0] non-existing SPS 0 referenced in buffering period
[h264 @ 0x286dee0] non-existing PPS referenced
[h264 @ 0x286dee0] non-existing SPS 0 referenced in buffering period
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] non-existing PPS 0 referenced
[h264 @ 0x286dee0] decode_slice_header error
[h264 @ 0x286dee0] no frame!
[mpegts @ 0x2869fc0] Stream #3: not enough frames to estimate rate; consider increasing probesize
[NULL @ 0x286fc60] start time is not set in estimate_timings_from_pts
[mpegts @ 0x2869fc0] PES packet size mismatch
Last message repeated 1 times
Input #0, mpegts, from 'teletextsubtitles.ts':
Duration: 00:00:55.32, start: 0.091256, bitrate: 14610 kb/s
Program 137
Stream #0:0[0x30]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x40](ita): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:2[0x41](und): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:3[0x6a](ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Output #0, mpegts, to 'out.ts':
Metadata:
encoder : Lavf54.61.104
Stream #0:0(ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream mapping:
Stream #0:3 -> #0:0 (copy)
Press [q] to stop, [?] for help
size= 264kB time=00:00:00.00 bitrate=N/A
video:0kB audio:0kB subtitle:185 global headers:0kB muxing overhead 42.903811%
$ ffmpeg -i out.ts
ffmpeg version N-49553-g13eb9fc Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 3 2013 14:58:47 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 17.100 / 52. 17.100
libavcodec 54. 91.100 / 54. 91.100
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.100 / 3. 35.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[NULL @ 0x1e98720] start time is not set in estimate_timings_from_pts
Input #0, mpegts, from 'out.ts':
Duration: N/A, bitrate: N/A
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100](ita): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
At least one output file must be specified
comment:4 by , 12 years ago
| Summary: | ffmpeg converts dvb_teletext to dvb_subtitle when -c copy is used → Muxing dvb_teletext in mpegts does not work |
|---|
comment:5 by , 12 years ago
Please tell the "true" OP that mplayer -dumpstream is the recommended way of recording a transport stream from dvb (imo), it allows to save all wanted streams / pids.
comment:6 by , 12 years ago
To the original reporter:
There is a mailing list where user questions are answered: http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Concerning your problem: To dump transport streams, do not use FFmpeg's remuxing function (it is not made for this task), instead use (for example) mplayer -dumpstream. (I am sure there are other possibilities, this is how I do it.)
In case my comment:3 was not clear: The attached patch does *not* help, it does *not* fix your issue.
by , 12 years ago
| Attachment: | PMT - teletext NOT OK.txt added |
|---|
by , 12 years ago
| Attachment: | PMT - teletext OK.txt added |
|---|
comment:7 by , 12 years ago
I added two files with component section of PMT for teletext. One is from original stream (PMT - teletext OK.txt) and second one (PMT - teletext NOT OK.txt) is from stream that is generated with ffmpeg with patchdvbteletext applied.
The patchdvbteletext added two additional teletext_list entries with strange ISO_639_language_code.
Teletext generated by ffmpeg with patchdvbteletext applied cannot be viewed on any device.
I'm using DVB inspector as teletext viewer.
comment:8 by , 12 years ago
I deleted the attachment, sorry that it caused so much confusion, I will try to avoid attaching wip in the future.
follow-up: 10 comment:9 by , 12 years ago
You were on good way of solving this problem. Who and how will solve teletex problem ?
Your patch was OK. It changed descriptor from 59 to 56 for teletext, but added additional stuff.
comment:10 by , 12 years ago
by , 12 years ago
| Attachment: | 0001-Fixed-processing-with-teletext-descriptor-and-packet-2.patch added |
|---|
comment:11 by , 12 years ago
I attached patch which solve the teletext problem.
For testting I used this command:
$ ffmpeg -i ./teletextsubtitles.ts -map 0 -codec copy -f mpegts out.ts
comment:12 by , 12 years ago
Thank you for working on this, please send the patch to ffmpeg-devel where it will receive more attention.
comment:14 by , 11 years ago
| Resolution: | → fixed |
|---|---|
| Status: | open → closed |
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Is this only reproducible with a network input stream or also with file input?