#1732: avienc: inserts too many (>90%) empty packets
------------------------------------+------------------------------------
Reporter: Andrew | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: avi | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+------------------------------------
Comment (by Andrew):
> Is this only reproducible with network input or also if you use an
> input file?
muxing file: insert 1 empty per packet
{{{
% ./ffmpeg -i /tmp/7b0de690da55.mp4 -vcodec copy -an -frames 20 -y
/var/tmp/a.avi
ffmpeg version N-44432-g59db014 Copyright (c) 2000-2012 the FFmpeg
developers
built on Sep 13 2012 19:13:56 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-version3 --enable-runtime-cpudetect
libavutil 51. 73.100 / 51. 73.100
libavcodec 54. 55.100 / 54. 55.100
libavformat 54. 27.100 / 54. 27.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 16.103 / 3. 16.103
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/7b0de690da55.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 1942-06-26 18:41:39
Duration: 00:00:59.76, start: 0.000000, bitrate: 364 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 /
0x31637661), yuv420p, 464x348, 265 kb/s, 30 fps, 30 tbr, 60 tbn, 60 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
s16, 95 kb/s
Metadata:
creation_time : 1942-06-26 18:41:39
handler_name : IsoMedia File Produced by Google, 5-11-2011
Output #0, avi, to '/var/tmp/a.avi':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
ISFT : Lavf54.27.100
Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 464x348,
q=2-31, 265 kb/s, 30 fps, 60 tbn, 60 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 1 from 2, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 2 from 4, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 3 from 6, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 4 from 8, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 5 from 10, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 6 from 12, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 7 from 14, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 8 from 16, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 9 from 18, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 10 from 20, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 11 from 22, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 12 from 24, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 13 from 26, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 14 from 28, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 15 from 30, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 16 from 32, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 17 from 34, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 18 from 36, 50%
[avi @ 0x9ce6340] V: insert 1 empty pkt, total empty 19 from 38, 50%
frame= 20 fps=0.0 q=-1.0 Lsize= 40kB time=00:00:00.65 bitrate=
501.8kbits/s
video:33kB audio:0kB subtitle:0 global headers:0kB muxing overhead
19.547307%
}}}
muxing file with transcoding : have no inserted empty packet
{{{
% ./ffmpeg -i /tmp/7b0de690da55.mp4 -vcodec mpeg4 -an -frames 100 -y
/var/tmp/a.avi
ffmpeg version N-44432-g59db014 Copyright (c) 2000-2012 the FFmpeg
developers
built on Sep 13 2012 19:13:56 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-version3 --enable-runtime-cpudetect
libavutil 51. 73.100 / 51. 73.100
libavcodec 54. 55.100 / 54. 55.100
libavformat 54. 27.100 / 54. 27.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 16.103 / 3. 16.103
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/7b0de690da55.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 1942-06-26 18:41:39
Duration: 00:00:59.76, start: 0.000000, bitrate: 364 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 /
0x31637661), yuv420p, 464x348, 265 kb/s, 30 fps, 30 tbr, 60 tbn, 60 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
s16, 95 kb/s
Metadata:
creation_time : 1942-06-26 18:41:39
handler_name : IsoMedia File Produced by Google, 5-11-2011
Output #0, avi, to '/var/tmp/a.avi':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
ISFT : Lavf54.27.100
Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 464x348,
q=2-31, 200 kb/s, 30 tbn, 30 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Press [q] to stop, [?] for help
frame= 100 fps=0.0 q=4.3 Lsize= 181kB time=00:00:03.33 bitrate=
443.8kbits/s
video:173kB audio:0kB subtitle:0 global headers:0kB muxing overhead
4.600627%
}}}
videolinux2 2 avi muxing: - insert 1 empty per packet
{{{
% ./ffmpeg -f video4linux2 -i /dev/video0 -vcodec copy -frames 10 -y
/var/tmp/a.avi
ffmpeg version N-44432-g59db014 Copyright (c) 2000-2012 the FFmpeg
developers
built on Sep 13 2012 19:13:56 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-version3 --enable-runtime-cpudetect
libavutil 51. 73.100 / 51. 73.100
libavcodec 54. 55.100 / 54. 55.100
libavformat 54. 27.100 / 54. 27.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 16.103 / 3. 16.103
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
[video4linux2,v4l2 @ 0x8fd2560] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1347609615.886965, bitrate: 165888 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
165888 kb/s, 25 tbr, 1000k tbn, 25 tbc
Output #0, avi, to '/var/tmp/a.avi':
Metadata:
ISFT : Lavf54.27.100
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
q=2-31, 165888 kb/s, 50 tbn, 50 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 1 from 2, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 2 from 4, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 3 from 6, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 4 from 8, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 5 from 10, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 6 from 12, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 7 from 14, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 8 from 16, 50%
[avi @ 0x8fcc960] V: insert 1 empty pkt, total empty 9 from 18, 50%
frame= 10 fps=0.0 q=-1.0 Lsize= 8106kB time=00:00:00.38
bitrate=174748.2kbits/s
video:8100kB audio:0kB subtitle:0 global headers:0kB muxing overhead
0.074002%
}}}
videolinux2 2 avi muxing with encoding: - have no inserted empty packet
{{{
% ./ffmpeg -f video4linux2 -i /dev/video0 -vcodec mjpeg -frames 10 -y
/var/tmp/a.avi
ffmpeg version N-44432-g59db014 Copyright (c) 2000-2012 the FFmpeg
developers
built on Sep 13 2012 19:13:56 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-version3 --enable-runtime-cpudetect
libavutil 51. 73.100 / 51. 73.100
libavcodec 54. 55.100 / 54. 55.100
libavformat 54. 27.100 / 54. 27.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 16.103 / 3. 16.103
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
[video4linux2,v4l2 @ 0xafa8560] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1347609689.123361, bitrate: 165888 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
165888 kb/s, 25 tbr, 1000k tbn, 25 tbc
Output #0, avi, to '/var/tmp/a.avi':
Metadata:
ISFT : Lavf54.27.100
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p, 720x576,
q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mjpeg)
Press [q] to stop, [?] for help
frame= 10 fps=0.0 q=0.0 Lsize= 93kB time=00:00:00.40
bitrate=1911.4kbits/s
video:88kB audio:0kB subtitle:0 global headers:0kB muxing overhead
6.610446%
}}}
rtsp 2 avi muxing with transcoding: have no inserted empty packet after
first 9 packets
{{{
% ./ffmpeg -rtsp_transport tcp -i 'rtsp://axis1031/axis-
media/media.amp?videocodec=mpeg4&video=1&audio=0' -vcodec mjpeg -an -y
/var/tmp/b.avi
ffmpeg version N-44432-g59db014 Copyright (c) 2000-2012 the FFmpeg
developers
built on Sep 13 2012 19:13:56 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-version3 --enable-runtime-cpudetect
libavutil 51. 73.100 / 51. 73.100
libavcodec 54. 55.100 / 54. 55.100
libavformat 54. 27.100 / 54. 27.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 16.103 / 3. 16.103
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
[rtsp @ 0x9dc35e0] Estimating duration from bitrate, this may be
inaccurate
Input #0, rtsp, from 'rtsp://axis1031/axis-
media/media.amp?videocodec=mpeg4&video=1&audio=0':
Metadata:
title : Media Presentation
Duration: N/A, start: 0.099878, bitrate: N/A
Stream #0:0: Video: mpeg4 (Advanced Simple Profile), yuv420p, 640x480
[SAR 1:1 DAR 4:3], 30.08 tbr, 90k tbn, 1k tbc
Output #0, avi, to '/var/tmp/b.avi':
Metadata:
INAM : Media Presentation
ISFT : Lavf54.27.100
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p, 640x480 [SAR
1:1 DAR 4:3], q=2-31, 200 kb/s, 30.08 tbn, 30.08 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> mjpeg)
Press [q] to stop, [?] for help
[avi @ 0x9dd67a0] V: insert 1 empty pkt, total empty 1 from 3, 33%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 3 from 6, 50%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 5 from 9, 55%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 7 from 12, 58%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 9 from 15, 60%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 11 from 18, 61%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 13 from 21, 61%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 15 from 24, 62%
[avi @ 0x9dd67a0] V: insert 2 empty pkt, total empty 17 from 27, 62%
frame= 239 fps= 32 q=0.0 Lsize= 2672kB time=00:00:08.50
bitrate=2572.4kbits/s
video:2660kB audio:0kB subtitle:0 global headers:0kB muxing overhead
0.442286%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1732#comment:2>
FFmpeg <http://ffmpeg.org>
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