FFmpeg - 从传输流文件（.ts）中提取视频和音频 [英] FFmpeg - Extracting video and audio from transport stream file (.ts)

问题描述

我希望在传输流文件（.ts）中通过指定其PID来提取特定程序的音频和视频，而不会丢失质量，并在生成的文件中使用相同的编解码器（输出文件是MPEG）。

I wish to extract the audio and video of a certain program in a transport stream file (.ts) by specifying its PID without losing quality and using the same codec in the resulting file (the output file is a MPEG).

是否可以使用FFmpeg ？如果是这样，我该怎么做？

Is that even possible with FFmpeg? If so, how can I do it?

到目前为止，我已经来到这个命令：

So far, I've come to this command:

 ffmpeg -i tsfile.ts -vcodec copy -acodec copy -q:v 1 output.mpg

编辑：请注意，文件output.mpg已创建。该文件包含视频，但音频未附加（无声音）。另外，我无法指定要提取的程序PID。

Edit: Note that the file output.mpg is created. The file contains the video but the audio isn't attached (no sound). Also, I am unable to specify the program PID to extract.

编辑2 ：这是 ffmpeg -i tsfile的输出。 ts

Edit 2: Here's the output of ffmpeg -i tsfile.ts

ffmpeg version N-47062-g26c531c Copyright (c) 2000-2012 the FFmpeg developers
built on Nov 25 2012 12:21:26 with gcc 4.7.2 (GCC)
    libavutil      52.  9.100 / 52.  9.100
    libavcodec     54. 77.100 / 54. 77.100
    libavformat    54. 37.100 / 54. 37.100
    libavdevice    54.  3.100 / 54.  3.100
    libavfilter     3. 23.102 /  3. 23.102
    libswscale      2.  1.102 /  2.  1.102
    libswresample   0. 17.101 /  0. 17.101
    libpostproc    52.  2.100 / 52.  2.100
[mpeg2video @ 0201c7a0] mpeg_decode_postinit() failure
Last message repeated 10 times
[mpegts @ 0037b800] PES packet size mismatch
Input #0, mpegts, from 'tsfile.ts':
Duration: 00:01:30.58, start: 56297.848344, bitrate: 18045 kb/s
Program 1
    Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 1920x1080  [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x34]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), s16, 384      kb/s

这是.ts文件上的 tsinfo.exe ：

Reading from C:\tsfile.ts
Scanning 10000 TS packets

Packet 1 is PAT
Program list:
    Program 1 -> PID 0020 (32)

Packet 2 is PMT with PID 0020 (32)
  Program 1, version 1, PCR PID 0031 (49)
     Program info (38 bytes): 0e 03 c0 b9 16 10 06 c0 02 71 c0 04 00 0b 02 42 3f 05 04
                              47 41 39 34 86 0d e2 65 6e 67 7e 3f ff 65 6e 67 c1 3f ff
 maximum bitrate (3 bytes): c0 b9 16
 smoothing buffer (6 bytes): c0 02 71 c0 04 00
 system clock (2 bytes): 42 3f
 Registration GA94
 Descriptor tag 86 (134) (13 bytes): e2 65 6e 67 7e 3f ff 65 6e 67 c1 3f ff
  Program streams:
PID 0031 (  49) -> Stream type 02 (  2) H.262/13818-2 video (MPEG-2) or 11172-2 constrained video
PID 0034 (  52) -> Stream type 81 (129) User private
    ES info (6 bytes): 6a 04 41 43 2d 33
    DVB AC-3 (4 bytes): 41 43 2d 33

Found 14 PAT packets and 7 PMT packets in 10000 TS packets

推荐答案

使用map选项和流说明符。
查看 -
https：/ /superuser.com/questions/343716/ffmpeg-how-to-demux-live-multi-program-transport-stream

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