[FFmpeg-trac] #2478(avdevice:new): PTS: DTS: invalid, clipping when recording alsa
FFmpeg
trac at avcodec.org
Wed Jun 12 19:51:05 CEST 2013
#2478: PTS: DTS: invalid, clipping when recording alsa
------------------------------------+------------------------------------
Reporter: MrNice | Owner:
Type: defect | Status: new
Priority: normal | Component: avdevice
Version: git-master | Resolution:
Keywords: alsa | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+------------------------------------
Comment (by MrNice):
I removed the line 193.
1st test, same command than comment 7
{{{
./ffmpeg -debug 1 -vn -f alsa -ac 2 -channel_layout stereo -i hw:0,0 -c:a
pcm_s16le out.wav
ffmpeg version N-53955-gd3e89f2 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jun 11 2013 15:29:15 with gcc 4.4.7 (GCC) 20120313 (Red Hat
4.4.7-3)
configuration:
libavutil 52. 35.100 / 52. 35.100
libavcodec 55. 15.100 / 55. 15.100
libavformat 55. 8.102 / 55. 8.102
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 75.101 / 3. 75.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
matched as AVOption 'debug' with argument '1'.
Reading option '-vn' ... matched as option 'vn' (disable video) with
argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'alsa'.
Reading option '-ac' ... matched as option 'ac' (set number of audio
channels) with argument '2'.
Reading option '-channel_layout' ... matched as option 'channel_layout'
(set channel layout) with argument 'stereo'.
Reading option '-i' ... matched as input file with argument 'hw:0,0'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument
'pcm_s16le'.
Reading option 'out.wav' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Successfully parsed a group of options.
Parsing a group of options: input file hw:0,0.
Applying option vn (disable video) with argument 1.
Applying option f (force format) with argument alsa.
Applying option ac (set number of audio channels) with argument 2.
Applying option channel_layout (set channel layout) with argument stereo.
Successfully parsed a group of options.
Opening an input file: hw:0,0.
[alsa @ 0x1ec7d00] All info found
Input #0, alsa, from 'hw:0,0':
Duration: N/A, start: 1371058668.112454, bitrate: 1536 kb/s
Stream #0:0, 1, 1/1000000: Audio: pcm_s16le, 48000 Hz, stereo, s16,
1536 kb/s
Successfully opened the file.
Parsing a group of options: output file out.wav.
Applying option c:a (codec name) with argument pcm_s16le.
Successfully parsed a group of options.
Opening an output file: out.wav.
File 'out.wav' already exists. Overwrite ? [y/N] y
Successfully opened the file.
detected 8 logical cores
[graph 0 input from stream 0:0 @ 0x1ec1300] Setting 'time_base' to value
'1/48000'
[graph 0 input from stream 0:0 @ 0x1ec1300] Setting 'sample_rate' to value
'48000'
[graph 0 input from stream 0:0 @ 0x1ec1300] Setting 'sample_fmt' to value
's16'
[graph 0 input from stream 0:0 @ 0x1ec1300] Setting 'channel_layout' to
value '0x3'
[graph 0 input from stream 0:0 @ 0x1ec1300] tb:1/48000 samplefmt:s16
samplerate:48000 chlayout:0x3
[audio format for output stream 0:0 @ 0x1ec17c0] Setting 'sample_fmts' to
value 's16'
[AVFilterGraph @ 0x1ec78c0] query_formats: 4 queried, 9 merged, 0 already
done, 0 delayed
Output #0, wav, to 'out.wav':
Metadata:
ISFT : Lavf55.8.102
Stream #0:0, 0, 1/48000: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
Press [q] to stop, [?] for help
[alsa @ 0x1ec7d00] ALSA buffer xrun.
size= 2520kB time=00:00:16.37 bitrate=1260.8kbits/s
video:0kB audio:2520kB subtitle:0 global headers:0kB muxing overhead
0.003100%
315 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x1ee3be0] Statistics: 4 seeks, 318 writeouts
}}}
Sound has what I call "tics" after some "bips"
2nd test, same command than comment 6
{{{
$ ./ffmpeg -debug 1 -f v4l2 -channel 1 -input_format yuyv422 -i
/dev/video0 -f alsa -ac 2 -channel_layout stereo -i hw:0,0 -map 0:v -map
1:a -c:a pcm_s16le -c:v ffv1 out.avi
ffmpeg version N-53955-gd3e89f2 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jun 11 2013 15:29:15 with gcc 4.4.7 (GCC) 20120313 (Red Hat
4.4.7-3)
configuration:
libavutil 52. 35.100 / 52. 35.100
libavcodec 55. 15.100 / 55. 15.100
libavformat 55. 8.102 / 55. 8.102
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 75.101 / 3. 75.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
matched as AVOption 'debug' with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-channel' ... matched as AVOption 'channel' with argument
'1'.
Reading option '-input_format' ... matched as AVOption 'input_format' with
argument 'yuyv422'.
Reading option '-i' ... matched as input file with argument '/dev/video0'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'alsa'.
Reading option '-ac' ... matched as option 'ac' (set number of audio
channels) with argument '2'.
Reading option '-channel_layout' ... matched as option 'channel_layout'
(set channel layout) with argument 'stereo'.
Reading option '-i' ... matched as input file with argument 'hw:0,0'.
Reading option '-map' ... matched as option 'map' (set input stream
mapping) with argument '0:v'.
Reading option '-map' ... matched as option 'map' (set input stream
mapping) with argument '1:a'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument
'pcm_s16le'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument
'ffv1'.
Reading option 'out.avi' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Successfully parsed a group of options.
Parsing a group of options: input file /dev/video0.
Applying option f (force format) with argument v4l2.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x18c2420] fd:3 capabilities:5020041
[video4linux2,v4l2 @ 0x18c2420] Selecting input_channel: 1
[video4linux2,v4l2 @ 0x18c2420] Current input_channel: 1, input_name:
S-Video
[video4linux2,v4l2 @ 0x18c2420] Querying the device for the current frame
size
[video4linux2,v4l2 @ 0x18c2420] Setting frame size to 720x576
[video4linux2,v4l2 @ 0x18c2420] The V4L2 driver is using the interlaced
mode
[video4linux2,v4l2 @ 0x18c2420] Current standard: PAL, id: 255,
frameperiod: 1/25
[video4linux2,v4l2 @ 0x18c2420] All info found
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1371059054.306878, bitrate: 165888 kb/s
Stream #0:0, 1, 1/1000000: Video: rawvideo (YUY2 / 0x32595559),
yuyv422, 720x576, 1/1000000, 165888 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k
tbc
Successfully opened the file.
Parsing a group of options: input file hw:0,0.
Applying option f (force format) with argument alsa.
Applying option ac (set number of audio channels) with argument 2.
Applying option channel_layout (set channel layout) with argument stereo.
Successfully parsed a group of options.
Opening an input file: hw:0,0.
[alsa @ 0x18c4100] All info found
Input #1, alsa, from 'hw:0,0':
Duration: N/A, start: 1371059054.309044, bitrate: 1536 kb/s
Stream #1:0, 1, 1/1000000: Audio: pcm_s16le, 48000 Hz, stereo, s16,
1536 kb/s
Successfully opened the file.
Parsing a group of options: output file out.avi.
Applying option map (set input stream mapping) with argument 0:v.
Applying option map (set input stream mapping) with argument 1:a.
Applying option c:a (codec name) with argument pcm_s16le.
Applying option c:v (codec name) with argument ffv1.
Successfully parsed a group of options.
Opening an output file: out.avi.
File 'out.avi' already exists. Overwrite ? [y/N] y
Successfully opened the file.
detected 8 logical cores
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'video_size' to value
'720x576'
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'pix_fmt' to value '1'
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'time_base' to value
'1/1000000'
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'pixel_aspect' to
value '0/1'
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'sws_param' to value
'flags=2'
[graph 0 input from stream 0:0 @ 0x18a5280] Setting 'frame_rate' to value
'25/1'
[graph 0 input from stream 0:0 @ 0x18a5280] w:720 h:576 pixfmt:yuyv422
tb:1/1000000 fr:25/1 sar:0/1 sws_param:flags=2
[format @ 0x18a6880] compat: called with
args=[yuv420p|yuva420p|yuva422p|yuv444p|yuva444p|yuv440p|yuv422p|yuv411p|yuv410p|bgr0|bgra|yuv420p16le|yuv422p16le|yuv444p16le|yuv444p9le|yuv422p9le|yuv420p9le|yuv420p10le|yuv422p10le|yuv444p10le|gray16le|gray|gbrp9le|gbrp10le|gbrp12le|gbrp14le]
[format @ 0x18a6880] Setting 'pix_fmts' to value
'yuv420p|yuva420p|yuva422p|yuv444p|yuva444p|yuv440p|yuv422p|yuv411p|yuv410p|bgr0|bgra|yuv420p16le|yuv422p16le|yuv444p16le|yuv444p9le|yuv422p9le|yuv420p9le|yuv420p10le|yuv422p10le|yuv444p10le|gray16le|gray|gbrp9le|gbrp10le|gbrp12le|gbrp14le'
[auto-inserted scaler 0 @ 0x18a5fe0] Setting 'flags' to value '0x4'
[auto-inserted scaler 0 @ 0x18a5fe0] w:iw h:ih flags:'0x4' interl:0
[format @ 0x18a6880] auto-inserting filter 'auto-inserted scaler 0'
between the filter 'Parsed_null_0' and the filter 'format'
[AVFilterGraph @ 0x18ab7e0] query_formats: 4 queried, 3 merged, 1 already
done, 0 delayed
[auto-inserted scaler 0 @ 0x18a5fe0] picking yuv422p out of 26 ref:yuyv422
alpha:0
[auto-inserted scaler 0 @ 0x18a5fe0] w:720 h:576 fmt:yuyv422 sar:0/1 ->
w:720 h:576 fmt:yuv422p sar:0/1 flags:0x4
[graph 1 input from stream 1:0 @ 0x18a9dc0] Setting 'time_base' to value
'1/48000'
[graph 1 input from stream 1:0 @ 0x18a9dc0] Setting 'sample_rate' to value
'48000'
[graph 1 input from stream 1:0 @ 0x18a9dc0] Setting 'sample_fmt' to value
's16'
[graph 1 input from stream 1:0 @ 0x18a9dc0] Setting 'channel_layout' to
value '0x3'
[graph 1 input from stream 1:0 @ 0x18a9dc0] tb:1/48000 samplefmt:s16
samplerate:48000 chlayout:0x3
[audio format for output stream 0:1 @ 0x18aa380] Setting 'sample_fmts' to
value 's16'
[AVFilterGraph @ 0x18abb60] query_formats: 4 queried, 9 merged, 0 already
done, 0 delayed
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf55.8.102
Stream #0:0, 0, 1/25: Video: ffv1 (FFV1 / 0x31564646), yuv422p,
720x576, 1/25, q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream #0:1, 0, 1/48000: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> ffv1)
Stream #1:0 -> #0:1 (pcm_s16le -> pcm_s16le)
Press [q] to stop, [?] for help
[alsa @ 0x18c4100] ALSA buffer xrun.
*** drop!34 fps= 33 q=-1.0 size= 12461kB time=00:00:06.64
bitrate=15373.7kbits/s
*** drop!10 fps= 29 q=-1.0 size= 20059kB time=00:00:09.68
bitrate=16975.1kbits/s dup=0 drop=1
*** drop!74 fps= 28 q=-1.0 size= 26097kB time=00:00:12.24
bitrate=17466.0kbits/s dup=0 drop=2
*** drop!50 fps= 28 q=-1.0 size= 33596kB time=00:00:15.28
bitrate=18011.9kbits/s dup=0 drop=3
*** drop!26 fps= 27 q=-1.0 size= 40997kB time=00:00:18.32
bitrate=18332.3kbits/s dup=0 drop=4
*** drop!89 fps= 27 q=-1.0 size= 47234kB time=00:00:20.84
bitrate=18567.1kbits/s dup=0 drop=5
*** drop!66 fps= 27 q=-1.0 size= 54545kB time=00:00:23.92
bitrate=18680.5kbits/s dup=0 drop=6
frame= 575 fps= 26 q=-1.0 Lsize= 55804kB time=00:00:24.28
bitrate=18828.2kbits/s dup=0 drop=7
video:51696kB audio:4072kB subtitle:0 global headers:0kB muxing overhead
0.064798%
1091 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x18ea9c0] Statistics: 10 seeks, 2242 writeouts
}}}
Sound has what I call "tics" after some "bips"
and frames are dropped.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2478#comment:10>
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