[FFmpeg-trac] #3631(undetermined:new): Aspect ratio change in the middle of a video stream
FFmpeg
trac at avcodec.org
Fri May 9 21:16:14 CEST 2014
#3631: Aspect ratio change in the middle of a video stream
-------------------------------------+-------------------------------------
Reporter: mar | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: ratio | Blocked By:
change image filter | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
I have a .ts file with an aspect ratio change in the middle of the video
stream. When I play the file with e.g. VLC, then the VLC player window
changes its size in the middle of the stream as expected.
Now, I want to extract image snapshots (jpeg images) from the video with a
height of 200 pixel and the according widht. I expect that the widhts of
the produced images will change according to the video source aspect
ratio. But all images produced by ffmpeg have the same size. The problem
persists if I remove the scale filter.
How to reproduce:
{{{
ffmpeg.exe -i aspect_ratio_change.ts -vf fps=1,scale=-1:200 out_%3d.jpeg
ffmpeg version N-63013-g4cdea92 Copyright (c) 2000-2014 the FFmpeg
developers
built on May 6 2014 22:02:02 with gcc 4.8.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc
--enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex
--enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-
aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs
--enable-libxvid --enable-decklink --enable-zlib
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from 'aspect_ratio_change.ts':
Duration: 00:00:07.43, start: 1978.640000, bitrate: 4715 kb/s
Program 258
Stream #0:0[0xe0]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv), 720x576 [SAR 16:15 DAR 4:3], max. 15000 kb/s, 25 fps, 25 tbr,
90k tbn, 50 tbc
Stream #0:1[0xc0](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16p, 186 kb/s (clean effects)
[swscaler @ 02d57000] deprecated pixel format used, make sure you did set
range correctly
Output #0, image2, to 'out_%3d.jpeg':
Metadata:
encoder : Lavf55.37.102
Stream #0:0: Video: mjpeg, yuvj420p, 250x200 [SAR 16:15 DAR 4:3],
q=2-31, 200 kb/s, 90k tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video -> mjpeg)
Press [q] to stop, [?] for help
frame= 8 fps=0.0 q=1.6 Lsize=N/A time=00:00:08.00 bitrate=N/A
video:106kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 17044493962313728.000000%
}}}
Here is the output with loglevel 99:
{{{
D:\media\ffmpegtest>C:\Programme\ffmpeg\ffmpeg.exe -v 9 -loglevel 99 -i
aspect_ratio_change.ts -vf fps=1,scale=-1:200 out_%3d.jpeg
ffmpeg version N-63013-g4cdea92 Copyright (c) 2000-2014 the FFmpeg
developers
built on May 6 2014 22:02:02 with gcc 4.8.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libblu
ray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc
--enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame --enable-
libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument '99'.
Reading option '-i' ... matched as input file with argument
'aspect_ratio_change.ts'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with
argument 'fps=1,scale=-1:200'.
Reading option 'out_%3d.jpeg' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input file aspect_ratio_change.ts.
Successfully parsed a group of options.
Opening an input file: aspect_ratio_change.ts.
[mpegts @ 02d54380] Format mpegts probed with size=2048 and score=100
[mpegts @ 02d54380] stream=0 stream_type=2 pid=e0 prog_reg_desc=
[mpegts @ 02d54380] stream=1 stream_type=3 pid=c0 prog_reg_desc=
[mpegts @ 02d54380] Before avformat_find_stream_info() pos: 0 bytes
read:32768 seeks:0
[mpegts @ 02d54380] All programs have pmt, headers found
[mpegts @ 02d54380] All info found
[mpegts @ 02d54380] After avformat_find_stream_info() pos: 0 bytes
read:675984 seeks:2 frames:56
Input #0, mpegts, from 'aspect_ratio_change.ts':
Duration: 00:00:07.43, start: 1978.640000, bitrate: 4715 kb/s
Program 258
Stream #0:0[0xe0], 21, 1/90000: Video: mpeg2video (Main) ([2][0][0][0]
/ 0x0002), yuv420p(tv), 720x576 [SAR 16:15 DAR 4:3], 1/50, max. 15000
kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0xc0](deu), 35, 1/90000: Audio: mp2 ([3][0][0][0] /
0x0003), 48000 Hz, stereo, s16p, 186 kb/s (clean effects)
Successfully opened the file.
Parsing a group of options: output file out_%3d.jpeg.
Applying option vf (set video filters) with argument fps=1,scale=-1:200.
Successfully parsed a group of options.
Opening an output file: out_%3d.jpeg.
Successfully opened the file.
detected 2 logical cores
[Parsed_fps_0 @ 003f8fa0] Setting 'fps' to value '1'
[Parsed_fps_0 @ 003f8fa0] fps=1/1
[Parsed_scale_1 @ 003fcf20] Setting 'w' to value '-1'
[Parsed_scale_1 @ 003fcf20] Setting 'h' to value '200'
[Parsed_scale_1 @ 003fcf20] Setting 'flags' to value '0x4'
[Parsed_scale_1 @ 003fcf20] w:-1 h:200 flags:'0x4' interl:0
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'video_size' to value
'720x576'
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'pix_fmt' to value '0'
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'time_base' to value
'1/90000'
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'pixel_aspect' to value
'16/15'
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'sws_param' to value
'flags=2'
[graph 0 input from stream 0:0 @ 02d541e0] Setting 'frame_rate' to value
'25/1'
[graph 0 input from stream 0:0 @ 02d541e0] w:720 h:576 pixfmt:yuv420p
tb:1/90000 fr:25/1 sar:16/15 sws_param:flags=2
[format @ 02d682e0] compat: called with args=[yuvj420p|yuvj422p|yuvj444p]
[format @ 02d682e0] Setting 'pix_fmts' to value
'yuvj420p|yuvj422p|yuvj444p'
[AVFilterGraph @ 003fb060] query_formats: 5 queried, 4 merged, 0 already
done, 0 delayed
[Parsed_scale_1 @ 003fcf20] picking yuvj420p out of 3 ref:yuv420p alpha:0
[swscaler @ 02d57020] deprecated pixel format used, make sure you did set
range correctly
[Parsed_scale_1 @ 003fcf20] w:720 h:576 fmt:yuv420p sar:16/15 -> w:250
h:200 fmt:yuvj420p sar:16/15 flags:0x4
[mjpeg @ 02dcc580] Forcing thread count to 1 for MJPEG encoding, use
-thread_type slice or a constant quantizer if you want to use multiple cpu
cores
[mjpeg @ 02dcc580] intra_quant_bias = 96 inter_quant_bias = 0
Output #0, image2, to 'out_%3d.jpeg':
Metadata:
encoder : Lavf55.37.102
Stream #0:0, 0, 1/90000: Video: mjpeg, yuvj420p, 250x200 [SAR 16:15
DAR 4:3], 1/1, q=2-31, 200 kb/s, 90k tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video -> mjpeg)
Press [q] to stop, [?] for help
[mpegts @ 02d54380] Correcting start time by 229956
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 11 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 23 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 23 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 22 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 21 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 23 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 23 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).
Last message repeated 6 times
[Parsed_fps_0 @ 003f8fa0] Dropping 1 frame(s).07.00 bitrate=N/A
Last message repeated 8 times
[AVIOContext @ 02d56f00] Statistics: 0 seeks, 1 writeouts
[output stream 0:0 @ 02e0ffa0] EOF on sink link output stream 0:0:default.
No more output streams to write to, finishing.
frame= 8 fps=0.0 q=1.6 Lsize=N/A time=00:00:08.00 bitrate=N/A
video:106kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 17044493962313728.000000%
Input file #0 (aspect_ratio_change.ts):
Input stream #0:0 (video): 182 packets read (3971820 bytes); 177 frames
decoded;
Input stream #0:1 (audio): 0 packets read (0 bytes);
Total: 182 packets (3971820 bytes) demuxed
Output file #0 (out_%3d.jpeg):
Output stream #0:0 (video): 8 frames encoded; 8 packets muxed (108227
bytes);
Total: 8 packets (108227 bytes) muxed
183 frames successfully decoded, 0 decoding errors
[Parsed_fps_0 @ 003f8fa0] 177 frames in, 8 frames out; 169 frames dropped,
0 frames duplicated.
[AVIOContext @ 003fada0] Statistics: 5055632 bytes read, 2 seeks
D:\media\ffmpegtest>
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3631>
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