[FFmpeg-user] How to find the last working GIT version?

[paulj at fastmail.es]

> On 12/09/2012 9:03 AM, Carl Eugen Hoyos wrote:
> > git log -p 3e1cf49 shows you the change in commit 3e1cf49
> > (a version that you know is bad) and all prior commits, the
> > first commit before 3e1cf49 is 2107009 that as you know is a
> > good version, so you only have to revert the one line from
> > commit 3e1cf49 but none of the (several ten-thousand)
> > earlier commits.
> >
> > I hope this clears it up, if not, try to remove
> > "&& has_decode_delay_been_guessed(st)" from
> > compute_pkt_fields() in libavformat/utils.c
> >
> 
> Ok, just to confirm - I've built latest head with that removed and it 
> works fine, so that is the problem spot there.
> 


	I can confirm that it also solves the bug I found, the one where dumping an H264 
stream from an Axis camera gave an "mp4 @ 0xaa897a0] pts (0) < dts (1) in stream 0
av_interleaved_write_frame(): Invalid argument" error. I just updated to the last git version (I 
think...), removed that part, and it worked:


[paulo at webserver ffmpeg]$ ./ffmpeg -rtsp_transport tcp -i rtsp://root:root@192.168.1.131:554/axis-media/media.amp?streamprofile=Media?tcp -vcodec copy -acodec copy ../axis.mp4
ffmpeg version N-43891-g65b552c Copyright (c) 2000-2012 the FFmpeg developers
  built on Sep 12 2012 21:02:08 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-50)
  configuration: --enable-encoder=libx264 --enable-libx264 --enable-runtime-cpudetect --enable-libmp3lame --enable-gpl --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib
  libavutil      51. 70.100 / 51. 70.100
  libavcodec     54. 54.100 / 54. 54.100
  libavformat    54. 25.104 / 54. 25.104
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3. 13.101 /  3. 13.101
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[rtsp @ 0xa8245c0] Estimating duration from bitrate, this may be inaccurate
Input #0, rtsp, from 'rtsp://root:root@192.168.1.131:554/axis-media/media.amp?streamprofile=Media?tcp':
  Metadata:
    title           : Media Presentation
  Duration: N/A, start: 0.100067, bitrate: N/A
    Stream #0:0: Video: h264 (Baseline), yuvj420p, 640x480 [SAR 1:1 DAR 4:3], 29.97 tbr, 90k tbn, 180k tbc
Output #0, mp4, to '../axis.mp4':
  Metadata:
    title           : Media Presentation
    encoder         : Lavf54.25.104
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 90k tbn, 90k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame=   34 fps=0.0 q=-1.0 size=    2736kB time=00:00:01.93 bitrate=11564.6kbits
frame=   45 fps= 43 q=-1.0 size=    3614kB time=00:00:02.33 bitrate=12662.2kbits
frame=   58 fps= 37 q=-1.0 size=    4663kB time=00:00:03.07 bitrate=12440.9kbits
frame=   71 fps= 34 q=-1.0 size=    5700kB time=00:00:03.57 bitrate=13076.8kbits


                                  Paulo.

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