[FFmpeg-trac] #2098(undetermined:closed): ffmpeg force transcoding from h264 to mpeg2video while stream mpegts from h264 file
FFmpeg
trac at avcodec.org
Wed Jan 2 16:08:55 CET 2013
#2098: ffmpeg force transcoding from h264 to mpeg2video while stream mpegts from
h264 file
-------------------------------------+-------------------------------------
Reporter: gxk | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution: invalid
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* status: new => closed
* resolution: => invalid
Old description:
> I am trying to stream over mpegts/udp h264 from file
>
> Problem that ffmpeg force transcoding h264 to mpeg2video
>
> ffmpeg started on 2013-01-02 at 15:17:57
> Report written to "ffmpeg-20130102-151757.log"
> Command line:
> ffmpeg -report -re -i ./transformers/trans3-720p.h264 -c:v copy -f mpegts
> udp://192.168.1.2:5004
> ffmpeg version N-48393-g8bc7422 Copyright (c) 2000-2013 the FFmpeg
> developers
> built on Jan 2 2013 14:48:50 with gcc 4.6 (Ubuntu/Linaro
> 4.6.3-1ubuntu5)
> configuration: --prefix=/opt/x86 --enable-gpl --enable-shared --enable-
> libx264 --enable-libxvid --extra-cflags=-I/opt/x86/include --extra-
> ldflags=-L/opt/x86/lib
> libavutil 52. 13.100 / 52. 13.100
> libavcodec 54. 85.100 / 54. 85.100
> libavformat 54. 59.100 / 54. 59.100
> libavdevice 54. 3.102 / 54. 3.102
> libavfilter 3. 30.102 / 3. 30.102
> libswscale 2. 1.103 / 2. 1.103
> libswresample 0. 17.102 / 0. 17.102
> libpostproc 52. 2.100 / 52. 2.100
> Splitting the commandline.
> Reading option '-report' ... matched as option 'report' (generate a
> report) with argument '1'.
> Reading option '-re' ... matched as option 're' (read input at native
> frame rate) with argument '1'.
> Reading option '-i' ... matched as input file with argument
> './transformers/trans3-720p.h264'.
> Reading option '-c:v' ... matched as option 'c' (codec name) with
> argument 'copy'.
> Reading option '-f' ... matched as option 'f' (force format) with
> argument 'mpegts'.
> Reading option 'udp://192.168.1.2:5004' ... matched as output file.
> Finished splitting the commandline.
> Parsing a group of options: global .
> Applying option report (generate a report) with argument 1.
> Successfully parsed a group of options.
> Parsing a group of options: input file ./transformers/trans3-720p.h264.
> Applying option re (read input at native frame rate) with argument 1.
> Successfully parsed a group of options.
> Opening an input file: ./transformers/trans3-720p.h264.
> [h264 @ 0x81f3540] Format h264 probed with size=2048 and score=51
> [h264 @ 0x81f3540] File position before avformat_find_stream_info() is 0
> [h264 @ 0x81f97a0] no picture
> [h264 @ 0x81f3540] max_analyze_duration 5000000 reached at 5005000
> [h264 @ 0x81f3540] Estimating duration from bitrate, this may be
> inaccurate
> [h264 @ 0x81f3540] File position after avformat_find_stream_info() is
> 3917824
> Input #0, h264, from './transformers/trans3-720p.h264':
> Duration: N/A, bitrate: N/A
> Stream #0:0, 122, 1/1200000: Video: h264 (High), yuv420p, 1280x720,
> 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
> Successfully openened the file.
> Parsing a group of options: output file udp://192.168.1.2:5004.
> Applying option c:v (codec name) with argument copy.
> Applying option f (force format) with argument mpegts.
> Successfully parsed a group of options.
> Opening an output file: udp://192.168.1.2:5004.
> Successfully openened the file.
> [mpegts @ 0x81faa60] muxrate VBR, pcr every 2 pkts, sdt every 200,
> pat/pmt every 40 pkts
> Output #0, mpegts, to 'udp://192.168.1.2:5004':
> Metadata:
> encoder : Lavf54.59.100
> Stream #0:0, 0, 1/90000: Video: h264, yuv420p, 1280x720, q=2-31,
> 23.98 fps, 90k tbn, 23.98 tbc
> Stream mapping:
> Stream #0:0 -> #0:0 (copy)
> Press [q] to stop, [?] for help
> [mpegts @ 0x81faa60] first pts value must set
> av_interleaved_write_frame(): Invalid data found when processing input
> Statistics: 3932160 bytes read, 0 seeks
New description:
I am trying to stream over mpegts/udp h264 from file
Problem that ffmpeg force transcoding h264 to mpeg2video
{{{
ffmpeg started on 2013-01-02 at 15:17:57
Report written to "ffmpeg-20130102-151757.log"
Command line:
ffmpeg -report -re -i ./transformers/trans3-720p.h264 -c:v copy -f mpegts
udp://192.168.1.2:5004
ffmpeg version N-48393-g8bc7422 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jan 2 2013 14:48:50 with gcc 4.6 (Ubuntu/Linaro
4.6.3-1ubuntu5)
configuration: --prefix=/opt/x86 --enable-gpl --enable-shared --enable-
libx264 --enable-libxvid --extra-cflags=-I/opt/x86/include --extra-
ldflags=-L/opt/x86/lib
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 85.100 / 54. 85.100
libavformat 54. 59.100 / 54. 59.100
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 30.102 / 3. 30.102
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Splitting the commandline.
Reading option '-report' ... matched as option 'report' (generate a
report) with argument '1'.
Reading option '-re' ... matched as option 're' (read input at native
frame rate) with argument '1'.
Reading option '-i' ... matched as input file with argument
'./transformers/trans3-720p.h264'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument
'copy'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'mpegts'.
Reading option 'udp://192.168.1.2:5004' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input file ./transformers/trans3-720p.h264.
Applying option re (read input at native frame rate) with argument 1.
Successfully parsed a group of options.
Opening an input file: ./transformers/trans3-720p.h264.
[h264 @ 0x81f3540] Format h264 probed with size=2048 and score=51
[h264 @ 0x81f3540] File position before avformat_find_stream_info() is 0
[h264 @ 0x81f97a0] no picture
[h264 @ 0x81f3540] max_analyze_duration 5000000 reached at 5005000
[h264 @ 0x81f3540] Estimating duration from bitrate, this may be
inaccurate
[h264 @ 0x81f3540] File position after avformat_find_stream_info() is
3917824
Input #0, h264, from './transformers/trans3-720p.h264':
Duration: N/A, bitrate: N/A
Stream #0:0, 122, 1/1200000: Video: h264 (High), yuv420p, 1280x720,
23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Successfully openened the file.
Parsing a group of options: output file udp://192.168.1.2:5004.
Applying option c:v (codec name) with argument copy.
Applying option f (force format) with argument mpegts.
Successfully parsed a group of options.
Opening an output file: udp://192.168.1.2:5004.
Successfully openened the file.
[mpegts @ 0x81faa60] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt
every 40 pkts
Output #0, mpegts, to 'udp://192.168.1.2:5004':
Metadata:
encoder : Lavf54.59.100
Stream #0:0, 0, 1/90000: Video: h264, yuv420p, 1280x720, q=2-31, 23.98
fps, 90k tbn, 23.98 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[mpegts @ 0x81faa60] first pts value must set
av_interleaved_write_frame(): Invalid data found when processing input
Statistics: 3932160 bytes read, 0 seeks
}}}
--
Comment:
Nothing in your command line indicates that FFmpeg tries to re-encode your
video using the mpeg2video encoder, on the contrary, see "Output ... h264"
and "Stream #0:0 -> #0:0 (copy)".
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2098#comment:1>
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