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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (51)
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21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
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On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
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Ajouter notes et légendes aux images
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Sur d’autres sites (10186)
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keepalive type and frequency in ffmpeg [on hold]
19 novembre 2013, par Jack SimthMy company has a bunch of IP cameras that we distribute - specifically Grandstream - and the manufacturer has changed their firmware. The normal keepalive that ffmpeg uses for the rtsp streams ( either ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL) ; or ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL) ; both in in libavformat/rtspdec.c) is no longer working, for two reasons :
1) The new Grandstream firmware is now checking for a receiver report to determine whether or not the program reading the stream is live, not just anything.
2) The new Grandstream firmware requires that the receiver report to keep the connection alive happen at least once every 25 seconds, and on the audio stream it is currently only happening about every 30 seconds or so (video is getting it every 7 seconds or so).
So after about a minute with ffmpeg connected, the camera stops sending the audio stream, the audio stream on ffmpeg reads end-of-file, and then ffmpeg shuts everything down.
As I can't change the firmware, I'm trying to dig through the ffmpeg code to make it send the appropriate receiver report for the keep alive... but I am getting nowhere. I've added a little snippet of code into the receiver reports so I know when they're running when I call ffmpeg on debug, but... well, it's not going well.
Test command :
ffmpeg -loglevel debug -i rtsp ://admin:admin@192.168.4.3:554/0 -acodec libmp3lame -ar 22050 -vcodec copy -y -f flv /dev/null &> test.txtTest output :
`[root@localhost ffmpeg]# cat test.txt
ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug 21 2013 14:24:28 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
configuration: --datadir=/usr/share/ffmpeg --bindir=/usr/local/bin --libdir=/usr/local/lib --incdir=/usr/local/include --shlibdir=/usr/lib --mandir=/usr/share/man --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables' --enable-avfilter --enable-libx264 --enable-gpl --enable-version3 --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-x11grab --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-static --enable-libgsm --enable-libxvid --enable-libvpx --enable-libvorbis --enable-libvo-aacenc --enable-libmp3lame
libavutil 52. 38.100 / 52. 38.100
libavcodec 55. 18.102 / 55. 18.102
libavformat 55. 12.100 / 55. 12.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 79.101 / 3. 79.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-i' ... matched as input file with argument 'rtsp://admin:admin@192.168.4.3:554/0'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'libmp3lame'.
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '22050'.
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'copy'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option '/dev/null' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input file rtsp://admin:admin@192.168.4.3:554/0.
Successfully parsed a group of options.
Opening an input file: rtsp://admin:admin@192.168.4.3:554/0.
[rtsp @ 0x9d9ccc0] SDP:
v=0
o=StreamingServer 3331435948 1116907222000 IN IP4 192.168.4.3
s=h264.mp4
c=IN IP4 0.0.0.0
t=0 0
a=control:*
m=video 0 RTP/AVP 96
a=control:trackID=0
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1; sprop-parameter-sets=Z0LgHtoCgPRA,aM4wpIA=
m=audio 0 RTP/AVP 0
a=control:trackID=1
a=rtpmap:0 PCMU/8000
a=ptime:20
m=application 0 RTP/AVP 107
a=control:trackID=2
a=rtpmap:107 vnd.onvif.metadata/90000
[rtsp @ 0x9d9ccc0] video codec set to: h264
[NULL @ 0x9d9f400] RTP Packetization Mode: 1
[NULL @ 0x9d9f400] Extradata set to 0x9d9f900 (size: 22)!
[rtsp @ 0x9d9ccc0] audio codec set to: pcm_mulaw
[rtsp @ 0x9d9ccc0] audio samplerate set to: 8000
[rtsp @ 0x9d9ccc0] audio channels set to: 1
[rtsp @ 0x9d9ccc0] hello state=0
[h264 @ 0x9d9f400] Current profile doesn't provide more RBSP data in PPS, skipping
Last message repeated 1 times
[rtsp @ 0x9d9ccc0] All info found
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://admin:admin@192.168.4.3:554/0':
Metadata:
title : h264.mp4
Duration: N/A, start: 0.000000, bitrate: 64 kb/s
Stream #0:0, 28, 1/90000: Video: h264 (Constrained Baseline), yuv420p, 640x480, 1/180000, 10 tbr, 90k tbn, 180k tbc
Stream #0:1, 156, 1/8000: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
Successfully opened the file.
Parsing a group of options: output file /dev/null.
Applying option acodec (force audio codec ('copy' to copy stream)) with argument libmp3lame.
Applying option ar (set audio sampling rate (in Hz)) with argument 22050.
Applying option vcodec (force video codec ('copy' to copy stream)) with argument copy.
Applying option f (force format) with argument flv.
Successfully parsed a group of options.
Opening an output file: /dev/null.
Successfully opened the file.
detected 2 logical cores
[graph 0 input from stream 0:1 @ 0x9f15380] Setting 'time_base' to value '1/8000'
[graph 0 input from stream 0:1 @ 0x9f15380] Setting 'sample_rate' to value '8000'
[graph 0 input from stream 0:1 @ 0x9f15380] Setting 'sample_fmt' to value 's16'
[graph 0 input from stream 0:1 @ 0x9f15380] Setting 'channel_layout' to value '0x4'
[graph 0 input from stream 0:1 @ 0x9f15380] tb:1/8000 samplefmt:s16 samplerate:8000 chlayout:0x4
[audio format for output stream 0:1 @ 0x9efa7c0] Setting 'sample_fmts' to value 's32p|fltp|s16p'
[audio format for output stream 0:1 @ 0x9efa7c0] Setting 'sample_rates' to value '22050'
[audio format for output stream 0:1 @ 0x9efa7c0] Setting 'channel_layouts' to value '0x4|0x3'
[audio format for output stream 0:1 @ 0x9efa7c0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:1'
[AVFilterGraph @ 0x9f15980] query_formats: 4 queried, 9 merged, 3 already done, 0 delayed
[auto-inserted resampler 0 @ 0x9dfada0] ch:1 chl:mono fmt:s16 r:8000Hz -> ch:1 chl:mono fmt:s16p r:22050Hz
Output #0, flv, to '/dev/null':
Metadata:
title : h264.mp4
encoder : Lavf55.12.100
Stream #0:0, 0, 1/1000: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 640x480, 1/90000, q=2-31, 1k tbn, 90k tbc
Stream #0:1, 0, 1/1000: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 22050 Hz, mono, s16p
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (pcm_mulaw -> libmp3lame)
Press [q] to stop, [?] for help
Current profile doesn't provide more RBSP data in PPS, skippingrate= 135.4kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 134.4kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 135.0kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 135.5kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 136.9kbits/s
Queue input is backward in time= 233kB time=00:00:13.69 bitrate= 139.4kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 136.3kbits/s
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 13926; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 13952; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 13979; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14005; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14031; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14057; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14083; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14109; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14135; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14161; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14188; changing to 14239. This may result in incorrect timestamps in the output file.
[flv @ 0x9de1200] Non-monotonous DTS in output stream 0:1; previous: 14239, current: 14214; changing to 14239. This may result in incorrect timestamps in the output file.
Current profile doesn't provide more RBSP data in PPS, skippingrate= 141.5kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 142.0kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 142.5kbits/s
Receiver Report delay: 469789, gettime: -1527669086, last_recep: 322446, timebase: -1534837492
Current profile doesn't provide more RBSP data in PPS, skippingrate= 141.5kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 141.7kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 141.1kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 140.6kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 140.7kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.9kbits/s
Receiver Report delay: 132993, gettime: -1516538925, last_recep: 322446, timebase: -1518568234
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.6kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.6kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.7kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.4kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 140.0kbits/s
Receiver Report delay: 897727, gettime: -1504870331, last_recep: 322446, timebase: -1518568552
[NULL @ 0x9d9f400] Current profile doesn't provide more RBSP data in PPS, skipping
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.4kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.1kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.0kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 139.0kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 138.6kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 138.5kbits/s
Current profile doesn't provide more RBSP data in PPS, skippingrate= 138.2kbits/s
EOF on sink link output stream 0:1:default.time=00:00:58.40 bitrate= 139.6kbits/s
No more output streams to write to, finishing.
[libmp3lame @ 0x9dfa580] Trying to remove 344 more samples than there are in the queue
frame= 589 fps= 11 q=-1.0 Lsize= 1003kB time=00:00:58.85 bitrate= 139.5kbits/s
video:724kB audio:231kB subtitle:0 global headers:0kB muxing overhead 4.955356%
2959 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x9e021c0] Statistics: 3 seeks, 2860 writeouts
[root@localhost ffmpeg]# -
ffmpeg Error while filtering : Cannot allocate memory
7 juillet 2017, par Andres MEREMy workstation seems to have plenty of memory (and everything). When I am trying to run ffmpeg as follows :
/usr/local/bin/ffmpeg \
-loglevel debug \
-i "A066C002_170619NU_CANON.mov" \
-filter_complex "[0:0] [0:2] amerge, aformat=sample_fmts=s16:channel_layouts=stereo [a]" \
-map "[a]" \
-map 0:5 \
-c:a libfdk_aac \
-vbr 3 \
-vcodec libx264 \
-profile:v baseline \
-level 3.0 \
-vf scale=1280:720 \
-pix_fmt yuv420p \
-crf 20 \
-metadata title="Test movie" \
-movflags +faststart \
-y \
"A066C002_170619NU_CANON.mp4"It fails with "Error while filtering : Cannot allocate memory".
ffmpeg version N-86721-gf605b56-am Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
configuration: --extra-version=am --enable-gpl --enable-libfdk-aac --enable-libsoxr --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-shared
libavutil 55. 67.100 / 55. 67.100
libavcodec 57.100.103 / 57.100.103
libavformat 57. 75.100 / 57. 75.100
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 94.100 / 6. 94.100
libswscale 4. 7.101 / 4. 7.101
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-i' ... matched as input url with argument 'A066C002_170619NU_CANON.mov'.
Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument '[0:0] [0:2] amerge, aformat=sample_fmts=s16:channel_layouts=stereo [a]'.
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '[a]'.
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0:5'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'libfdk_aac'.
Reading option '-vbr' ... matched as AVOption 'vbr' with argument '3'.
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'libx264'.
Reading option '-profile:v' ... matched as option 'profile' (set profile) with argument 'baseline'.
Reading option '-level' ... matched as AVOption 'level' with argument '3.0'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=1280:720'.
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'yuv420p'.
Reading option '-crf' ... matched as AVOption 'crf' with argument '20'.
Reading option '-metadata' ... matched as option 'metadata' (add metadata) with argument 'title=Test movie'.
Reading option '-movflags' ... matched as AVOption 'movflags' with argument '+faststart'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option 'A066C002_170619NU_CANON.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option filter_complex (create a complex filtergraph) with argument [0:0] [0:2] amerge, aformat=sample_fmts=s16:channel_layouts=stereo [a].
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url A066C002_170619NU_CANON.mov.
Successfully parsed a group of options.
Opening an input file: A066C002_170619NU_CANON.mov.
[NULL @ 0x1c4f920] Opening 'A066C002_170619NU_CANON.mov' for reading
[file @ 0x1c4ffc0] Setting default whitelist 'file,crypto'
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 0, edit list 0 - media time: 0, duration: 129254400
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 1, edit list 0 - media time: 0, duration: 129254400
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 2, edit list 0 - media time: 0, duration: 129254400
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 3, edit list 0 - media time: 0, duration: 129254400
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 4, edit list 0 - media time: 0, duration: 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Unknown dref type 0x73696c61 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Processing st: 5, edit list 0 - media time: 0, duration: 67320
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] Before avformat_find_stream_info() pos: 59339926200 bytes read:760258 seeks:3 nb_streams:6
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1c4f920] After avformat_find_stream_info() pos: 1180516 bytes read:1945622 seeks:4 frames:144
Guessed Channel Layout for Input Stream #0.0 : mono
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'A066C002_170619NU_CANON.mov':
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
com.apple.quicktime.creationdate: 2017-06-19T13:12:13+0300
com.apple.proapps.manufacturer: CANON
com.apple.quicktime.make: CANON
com.apple.proapps.mio.cameraName: EOS C300 Mark II
com.apple.proapps.cameraname: EOS C300 Mark II
com.apple.quicktime.model: EOS C300 Mark II
com.apple.quicktime.camera.identifier: 060e2b34-0401-010d-0e15-0056454f0200
com.divergentmedia.editready.timecodeStart: 05:45:28:08
com.divergentmedia.editready.sonyXDCamTC: 05:45:28:08
com.divergentmedia.editReady.version: EditReady 1.4.9, 798
com.apple.proapps.studio.metadataFieldDominanceOverride: 1
date : 2017-06-19T13:12:13+0300
date-eng : 2017-06-19T13:12:13+0300
make : CANON
make-eng : CANON
model : EOS C300 Mark II
model-eng : EOS C300 Mark II
timecode : 05:45:28:08
Duration: 00:44:52.80, start: 0.000000, bitrate: 176292 kb/s
Stream #0:0(eng), 47, 1/48000: Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
handler_name : Apple Alias Data Handler
Stream #0:1(eng), 47, 1/48000: Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
handler_name : Apple Alias Data Handler
Stream #0:2(eng), 47, 1/48000: Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
handler_name : Apple Alias Data Handler
Stream #0:3(eng), 1, 1/48000: Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
handler_name : Apple Alias Data Handler
Stream #0:4(eng), 1, 1/25: Data: none (tmcd / 0x64636D74), 0/1, 0 kb/s (default)
Metadata:
creation_time : 2017-06-19T10:12:13.000000Z
handler_name : Apple Alias Data Handler
timecode : 05:45:28:08
Stream #0:5(eng), 1, 1/25: Video: prores, 1 reference frame (apch / 0x68637061), yuv422p10le(bt709, progressive), 1920x1080, 0/1, 173217 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
Metadata:
creation_time : 2017-06-21T11:52:58.000000Z
handler_name : Apple Alias Data Handler
encoder : Apple ProRes 422 (HQ)
Successfully opened the file.
detected 16 logical cores
[Parsed_aformat_1 @ 0x1c71a60] Setting 'sample_fmts' to value 's16'
[Parsed_aformat_1 @ 0x1c71a60] Setting 'channel_layouts' to value 'stereo'
Parsing a group of options: output url A066C002_170619NU_CANON.mp4.
Applying option map (set input stream mapping) with argument [a].
Applying option map (set input stream mapping) with argument 0:5.
Applying option c:a (codec name) with argument libfdk_aac.
Applying option vcodec (force video codec ('copy' to copy stream)) with argument libx264.
Applying option profile:v (set profile) with argument baseline.
Applying option vf (set video filters) with argument scale=1280:720.
Applying option pix_fmt (set pixel format) with argument yuv420p.
Applying option metadata (add metadata) with argument title=Test movie.
Successfully parsed a group of options.
Opening an output file: A066C002_170619NU_CANON.mp4.
[file @ 0x1d4fe40] Setting default whitelist 'file,crypto'
Successfully opened the file.
Stream mapping:
Stream #0:0 (pcm_s16le) -> amerge:in0 (graph 0)
Stream #0:2 (pcm_s16le) -> amerge:in1 (graph 0)
aformat (graph 0) -> Stream #0:0 (libfdk_aac)
Stream #0:5 -> #0:1 (prores (native) -> h264 (libx264))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 1 times
[Parsed_scale_0 @ 0x2397e60] Setting 'w' to value '1280'
[Parsed_scale_0 @ 0x2397e60] Setting 'h' to value '720'
[Parsed_scale_0 @ 0x2397e60] Setting 'flags' to value 'bicubic'
[Parsed_scale_0 @ 0x2397e60] w:1280 h:720 flags:'bicubic' interl:0
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'video_size' to value '1920x1080'
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'pix_fmt' to value '74'
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'time_base' to value '1/25'
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'pixel_aspect' to value '1/1'
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'sws_param' to value 'flags=2'
[graph 1 input from stream 0:5 @ 0x23984c0] Setting 'frame_rate' to value '25/1'
[graph 1 input from stream 0:5 @ 0x23984c0] w:1920 h:1080 pixfmt:yuv422p10le tb:1/25 fr:25/1 sar:1/1 sws_param:flags=2
[format @ 0x2399240] compat: called with args=[yuv420p]
[format @ 0x2399240] Setting 'pix_fmts' to value 'yuv420p'
[AVFilterGraph @ 0x1d517e0] query_formats: 4 queried, 3 merged, 0 already done, 0 delayed
[Parsed_scale_0 @ 0x2397e60] w:1920 h:1080 fmt:yuv422p10le sar:1/1 -> w:1280 h:720 fmt:yuv420p sar:1/1 flags:0x4
[libx264 @ 0x1d4f1a0] using mv_range_thread = 24
[libx264 @ 0x1d4f1a0] using SAR=1/1
[libx264 @ 0x1d4f1a0] frame MB size (80x45) > level limit (1620)
[libx264 @ 0x1d4f1a0] MB rate (90000) > level limit (40500)
[libx264 @ 0x1d4f1a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x1d4f1a0] profile Constrained Baseline, level 3.0
[libx264 @ 0x1d4f1a0] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=0 ref=2 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=22 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 94 times
[Parsed_aformat_1 @ 0x2559500] Setting 'sample_fmts' to value 's16'
[Parsed_aformat_1 @ 0x2559500] Setting 'channel_layouts' to value 'stereo'
[graph_0_in_0_0 @ 0x257c7c0] Setting 'time_base' to value '1/48000'
[graph_0_in_0_0 @ 0x257c7c0] Setting 'sample_rate' to value '48000'
[graph_0_in_0_0 @ 0x257c7c0] Setting 'sample_fmt' to value 's16'
[graph_0_in_0_0 @ 0x257c7c0] Setting 'channel_layout' to value '0x4'
[graph_0_in_0_0 @ 0x257c7c0] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x4
[graph_0_in_0_2 @ 0x25820a0] Setting 'time_base' to value '1/48000'
[graph_0_in_0_2 @ 0x25820a0] Setting 'sample_rate' to value '48000'
[graph_0_in_0_2 @ 0x25820a0] Setting 'sample_fmt' to value 's16'
[graph_0_in_0_2 @ 0x25820a0] Setting 'channel_layout' to value '0x4'
[graph_0_in_0_2 @ 0x25820a0] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x4
[format_out_0_0 @ 0x2580ce0] Setting 'sample_fmts' to value 's16'
[format_out_0_0 @ 0x2580ce0] Setting 'sample_rates' to value '96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000'
[format_out_0_0 @ 0x2580ce0] Setting 'channel_layouts' to value '0x4|0x3|0x7|0x107|0x37|0x3f|0xff|0x63f'
[Parsed_amerge_0 @ 0x1c6edc0] No channel layout for input 1
[AVFilterGraph @ 0x1c8abc0] query_formats: 5 queried, 6 merged, 0 already done, 9 delayed
[AVFilterGraph @ 0x1c8abc0] query_formats not finished
[Parsed_amerge_0 @ 0x1c6edc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
[AVFilterGraph @ 0x1c8abc0] query_formats: 1 queried, 9 merged, 6 already done, 0 delayed
[Parsed_amerge_0 @ 0x1c6edc0] in0:mono + in1:mono -> out:stereo
[libfdk_aac @ 0x1d4e300] Note, the VBR setting is unsupported and only works with some parameter combinations
Output #0, mp4, to 'A066C002_170619NU_CANON.mp4':
Metadata:
timecode : 05:45:28:08
com.apple.quicktime.creationdate: 2017-06-19T13:12:13+0300
com.apple.proapps.manufacturer: CANON
com.apple.quicktime.make: CANON
com.apple.proapps.mio.cameraName: EOS C300 Mark II
com.apple.proapps.cameraname: EOS C300 Mark II
com.apple.quicktime.model: EOS C300 Mark II
com.apple.quicktime.camera.identifier: 060e2b34-0401-010d-0e15-0056454f0200
com.divergentmedia.editready.timecodeStart: 05:45:28:08
com.divergentmedia.editready.sonyXDCamTC: 05:45:28:08
com.divergentmedia.editReady.version: EditReady 1.4.9, 798
com.apple.proapps.studio.metadataFieldDominanceOverride: 1
date : 2017-06-19T13:12:13+0300
date-eng : 2017-06-19T13:12:13+0300
make : CANON
make-eng : CANON
model : EOS C300 Mark II
model-eng : EOS C300 Mark II
title : Test movie
encoder : Lavf57.75.100
Stream #0:0, 0, 1/48000: Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 48000 Hz, stereo, s16, delay 2048 (default)
Metadata:
encoder : Lavc57.100.103 libfdk_aac
Stream #0:1(eng), 0, 1/12800: Video: h264 (libx264), 1 reference frame (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 0/1, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
creation_time : 2017-06-21T11:52:58.000000Z
handler_name : Apple Alias Data Handler
encoder : Lavc57.100.103 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 2 times
Clipping frame in rate conversion by 0.000008
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 201 times
cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x
Last message repeated 157 times
cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x
[libx264 @ 0x1d4f1a0] frame= 0 QP=19.02 NAL=3 Slice:I Poc:0 I:3600 P:0 SKIP:0 size=49899 bytes
Error while filtering: Cannot allocate memory
[libx264 @ 0x1d4f1a0] frame= 1 QP=19.20 NAL=2 Slice:P Poc:2 I:14 P:2118 SKIP:1468 size=6808 bytes
[libx264 @ 0x1d4f1a0] frame= 2 QP=18.86 NAL=2 Slice:P Poc:4 I:15 P:2339 SKIP:1246 size=7088 bytes
[libx264 @ 0x1d4f1a0] frame= 3 QP=19.08 NAL=2 Slice:P Poc:6 I:9 P:2449 SKIP:1142 size=7341 bytes
[libx264 @ 0x1d4f1a0] frame= 4 QP=18.92 NAL=2 Slice:P Poc:8 I:5 P:2482 SKIP:1113 size=7725 bytes
[libx264 @ 0x1d4f1a0] frame= 5 QP=18.73 NAL=2 Slice:P Poc:10 I:6 P:2100 SKIP:1494 size=6831 bytes
[libx264 @ 0x1d4f1a0] frame= 6 QP=18.73 NAL=2 Slice:P Poc:12 I:4 P:2492 SKIP:1104 size=8298 bytes
[libx264 @ 0x1d4f1a0] frame= 7 QP=18.52 NAL=2 Slice:P Poc:14 I:1 P:2397 SKIP:1202 size=7250 bytes
[libx264 @ 0x1d4f1a0] frame= 8 QP=18.51 NAL=2 Slice:P Poc:16 I:7 P:1523 SKIP:2070 size=5344 bytes
[libx264 @ 0x1d4f1a0] frame= 9 QP=18.51 NAL=2 Slice:P Poc:18 I:6 P:2398 SKIP:1196 size=7865 bytes
[libx264 @ 0x1d4f1a0] frame= 10 QP=18.58 NAL=2 Slice:P Poc:20 I:1 P:1840 SKIP:1759 size=6451 bytes
[libx264 @ 0x1d4f1a0] frame= 11 QP=18.58 NAL=2 Slice:P Poc:22 I:5 P:1764 SKIP:1831 size=6159 bytes
[libx264 @ 0x1d4f1a0] frame= 12 QP=18.52 NAL=2 Slice:P Poc:24 I:3 P:2421 SKIP:1176 size=8151 bytes
[libx264 @ 0x1d4f1a0] frame= 13 QP=18.51 NAL=2 Slice:P Poc:26 I:1 P:1892 SKIP:1707 size=6476 bytes
[libx264 @ 0x1d4f1a0] frame= 14 QP=18.41 NAL=2 Slice:P Poc:28 I:3 P:1919 SKIP:1678 size=6431 bytes
[libx264 @ 0x1d4f1a0] frame= 15 QP=18.48 NAL=2 Slice:P Poc:30 I:1 P:1255 SKIP:2344 size=4060 bytes
[libx264 @ 0x1d4f1a0] frame= 16 QP=18.79 NAL=2 Slice:P Poc:32 I:2 P:1373 SKIP:2225 size=4398 bytes
[libx264 @ 0x1d4f1a0] frame= 17 QP=18.77 NAL=2 Slice:P Poc:34 I:2 P:1459 SKIP:2139 size=4480 bytes
[libx264 @ 0x1d4f1a0] frame= 18 QP=19.01 NAL=2 Slice:P Poc:36 I:7 P:1658 SKIP:1935 size=5003 bytes
[libx264 @ 0x1d4f1a0] scene cut at 48 Icost:227110 Pcost:199261 ratio:0.1226 bias:0.1307 gop:48 (imb:3134 pmb:220)
[libx264 @ 0x1d4f1a0] frame= 19 QP=18.95 NAL=2 Slice:P Poc:38 I:0 P:2461 SKIP:1139 size=7169 bytes
[libx264 @ 0x1d4f1a0] frame= 20 QP=19.01 NAL=2 Slice:P Poc:40 I:1 P:2118 SKIP:1481 size=6048 bytes
[libx264 @ 0x1d4f1a0] frame= 21 QP=19.04 NAL=2 Slice:P Poc:42 I:0 P:2114 SKIP:1486 size=5838 bytes
[libx264 @ 0x1d4f1a0] frame= 22 QP=18.97 NAL=2 Slice:P Poc:44 I:3 P:2277 SKIP:1320 size=5952 bytes
[libx264 @ 0x1d4f1a0] frame= 23 QP=19.12 NAL=2 Slice:P Poc:46 I:0 P:1658 SKIP:1942 size=4813 bytes
[libx264 @ 0x1d4f1a0] frame= 24 QP=19.33 NAL=2 Slice:P Poc:48 I:0 P:1926 SKIP:1674 size=5503 bytes
[libx264 @ 0x1d4f1a0] frame= 25 QP=19.25 NAL=2 Slice:P Poc:50 I:0 P:2470 SKIP:1130 size=6478 bytes
[libx264 @ 0x1d4f1a0] frame= 26 QP=19.21 NAL=2 Slice:P Poc:52 I:0 P:2589 SKIP:1011 size=6985 bytes
[libx264 @ 0x1d4f1a0] frame= 27 QP=19.12 NAL=2 Slice:P Poc:54 I:0 P:2312 SKIP:1288 size=6381 bytes
[libx264 @ 0x1d4f1a0] frame= 28 QP=19.20 NAL=2 Slice:P Poc:56 I:2 P:2532 SKIP:1066 size=7296 bytes
[libx264 @ 0x1d4f1a0] frame= 29 QP=19.01 NAL=2 Slice:P Poc:58 I:0 P:2611 SKIP:989 size=8186 bytes
[libx264 @ 0x1d4f1a0] frame= 30 QP=18.95 NAL=2 Slice:P Poc:60 I:0 P:2582 SKIP:1018 size=7610 bytes
[libx264 @ 0x1d4f1a0] frame= 31 QP=19.02 NAL=2 Slice:P Poc:62 I:2 P:2620 SKIP:978 size=8077 bytes
[libx264 @ 0x1d4f1a0] frame= 32 QP=19.09 NAL=2 Slice:P Poc:64 I:1 P:1989 SKIP:1610 size=6214 bytes
[libx264 @ 0x1d4f1a0] frame= 33 QP=19.09 NAL=2 Slice:P Poc:66 I:0 P:2483 SKIP:1117 size=7027 bytes
[libx264 @ 0x1d4f1a0] frame= 34 QP=19.17 NAL=2 Slice:P Poc:68 I:0 P:2477 SKIP:1123 size=6833 bytes
[libx264 @ 0x1d4f1a0] frame= 35 QP=19.07 NAL=2 Slice:P Poc:70 I:1 P:2373 SKIP:1226 size=6915 bytes
[libx264 @ 0x1d4f1a0] frame= 36 QP=19.28 NAL=2 Slice:P Poc:72 I:3 P:2400 SKIP:1197 size=6975 bytes
[libx264 @ 0x1d4f1a0] frame= 37 QP=19.21 NAL=2 Slice:P Poc:74 I:1 P:2643 SKIP:956 size=7505 bytes
[libx264 @ 0x1d4f1a0] frame= 38 QP=19.40 NAL=2 Slice:P Poc:76 I:0 P:2289 SKIP:1311 size=6682 bytes
[libx264 @ 0x1d4f1a0] frame= 39 QP=19.52 NAL=2 Slice:P Poc:78 I:1 P:2074 SKIP:1525 size=5823 bytes
[libx264 @ 0x1d4f1a0] frame= 40 QP=19.72 NAL=2 Slice:P Poc:80 I:2 P:2420 SKIP:1178 size=6552 bytes
[libx264 @ 0x1d4f1a0] frame= 41 QP=19.99 NAL=2 Slice:P Poc:82 I:274 P:2019 SKIP:1307 size=7398 bytes
[libx264 @ 0x1d4f1a0] frame= 42 QP=19.77 NAL=2 Slice:P Poc:84 I:545 P:1946 SKIP:1109 size=7933 bytes
[libx264 @ 0x1d4f1a0] frame= 43 QP=19.52 NAL=2 Slice:P Poc:86 I:523 P:1969 SKIP:1108 size=7596 bytes
[libx264 @ 0x1d4f1a0] frame= 44 QP=19.25 NAL=2 Slice:P Poc:88 I:649 P:1303 SKIP:1648 size=6070 bytes
[libx264 @ 0x1d4f1a0] frame= 45 QP=18.80 NAL=2 Slice:P Poc:90 I:949 P:1115 SKIP:1536 size=6608 bytes
[libx264 @ 0x1d4f1a0] frame= 46 QP=18.51 NAL=2 Slice:P Poc:92 I:915 P:1141 SKIP:1544 size=6499 bytes
[libx264 @ 0x1d4f1a0] frame= 47 QP=18.38 NAL=2 Slice:P Poc:94 I:882 P:1071 SKIP:1647 size=6326 bytes
[libx264 @ 0x1d4f1a0] frame= 48 QP=15.38 NAL=3 Slice:I Poc:0 I:3600 P:0 SKIP:0 size=15254 bytes
[libx264 @ 0x1d4f1a0] frame= 49 QP=18.47 NAL=2 Slice:P Poc:2 I:870 P:1178 SKIP:1552 size=9327 bytes
[libx264 @ 0x1d4f1a0] frame= 50 QP=18.35 NAL=2 Slice:P Poc:4 I:691 P:1606 SKIP:1303 size=9056 bytes
[libx264 @ 0x1d4f1a0] frame= 51 QP=18.56 NAL=2 Slice:P Poc:6 I:567 P:1697 SKIP:1336 size=9923 bytes
[libx264 @ 0x1d4f1a0] frame= 52 QP=18.72 NAL=2 Slice:P Poc:8 I:500 P:1725 SKIP:1375 size=10632 bytes
[libx264 @ 0x1d4f1a0] frame= 53 QP=18.46 NAL=2 Slice:P Poc:10 I:537 P:1789 SKIP:1274 size=9973 bytes
[libx264 @ 0x1d4f1a0] frame= 54 QP=18.55 NAL=2 Slice:P Poc:12 I:478 P:1916 SKIP:1206 size=10196 bytes
[libx264 @ 0x1d4f1a0] frame= 55 QP=18.68 NAL=2 Slice:P Poc:14 I:446 P:2027 SKIP:1127 size=10172 bytes
[libx264 @ 0x1d4f1a0] frame= 56 QP=19.00 NAL=2 Slice:P Poc:16 I:284 P:2138 SKIP:1178 size=9705 bytes
[libx264 @ 0x1d4f1a0] frame= 57 QP=19.10 NAL=2 Slice:P Poc:18 I:244 P:2116 SKIP:1240 size=9518 bytes
[libx264 @ 0x1d4f1a0] frame= 58 QP=19.39 NAL=2 Slice:P Poc:20 I:239 P:2231 SKIP:1130 size=8953 bytes
[libx264 @ 0x1d4f1a0] frame= 59 QP=19.16 NAL=2 Slice:P Poc:22 I:178 P:2379 SKIP:1043 size=9059 bytes
[libx264 @ 0x1d4f1a0] frame= 60 QP=19.28 NAL=2 Slice:P Poc:24 I:58 P:2329 SKIP:1213 size=8257 bytes
[libx264 @ 0x1d4f1a0] frame= 61 QP=19.21 NAL=2 Slice:P Poc:26 I:34 P:2231 SKIP:1335 size=6689 bytes
[libx264 @ 0x1d4f1a0] frame= 62 QP=19.55 NAL=2 Slice:P Poc:28 I:14 P:2219 SKIP:1367 size=6164 bytes
[libx264 @ 0x1d4f1a0] frame= 63 QP=20.04 NAL=2 Slice:P Poc:30 I:8 P:1836 SKIP:1756 size=4318 bytes
[mp4 @ 0x1d4c880] Starting second pass: moving the moov atom to the beginning of the file
[mp4 @ 0x1d4c880] Opening 'A066C002_170619NU_CANON.mp4' for reading
[file @ 0xa01a460] Setting default whitelist 'file,crypto'
[AVIOContext @ 0x6b95260] Statistics: 509968 bytes read, 0 seeks
frame= 64 fps= 48 q=-1.0 Lsize= 500kB time=00:00:02.52 bitrate=1625.5kbits/s speed=1.88x
video:497kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.417128%
Input file #0 (A066C002_170619NU_CANON.mov):
Input stream #0:0 (audio): 141 packets read (288000 bytes); 141 frames decoded (144000 samples);
Input stream #0:1 (audio): 47 packets read (96000 bytes);
Input stream #0:2 (audio): 141 packets read (288000 bytes); 141 frames decoded (144000 samples);
Input stream #0:3 (audio): 1 packets read (2048 bytes);
Input stream #0:4 (data): 1 packets read (4 bytes);
Input stream #0:5 (video): 64 packets read (59520416 bytes); 64 frames decoded;
Total: 395 packets (60194468 bytes) demuxed
Output file #0 (A066C002_170619NU_CANON.mp4):
Output stream #0:0 (audio): 1 frames encoded (1024 samples); 3 packets muxed (740 bytes);
Output stream #0:1 (video): 64 frames encoded; 64 packets muxed (509175 bytes);
Total: 67 packets (509915 bytes) muxed
346 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x1c71880] Statistics: 4 seeks, 7 writeouts
[libx264 @ 0x1d4f1a0] frame I:2 Avg QP:17.20 size: 32576
[libx264 @ 0x1d4f1a0] frame P:62 Avg QP:18.99 size: 7152
[libx264 @ 0x1d4f1a0] mb I I16..4: 49.2% 0.0% 50.8%
[libx264 @ 0x1d4f1a0] mb P I16..4: 3.5% 0.0% 1.0% P16..4: 45.1% 8.4% 3.5% 0.0% 0.0% skip:38.5%
[libx264 @ 0x1d4f1a0] coded y,uvDC,uvAC intra: 30.7% 30.5% 4.8% inter: 7.0% 19.1% 0.3%
[libx264 @ 0x1d4f1a0] i16 v,h,dc,p: 47% 21% 9% 23%
[libx264 @ 0x1d4f1a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 18% 18% 5% 6% 4% 5% 4% 3%
[libx264 @ 0x1d4f1a0] i8c dc,h,v,p: 72% 11% 15% 2%
[libx264 @ 0x1d4f1a0] ref P L0: 63.8% 36.2%
[libx264 @ 0x1d4f1a0] kb/s:1589.21
[AVIOContext @ 0x1c583a0] Statistics: 61656934 bytes read, 59 seeksI happen to be absolute beginner (at least in ffmpeg). What went wrong ?
Thanks ! Andres Mere
-
Dreamcast Finds
15 avril 2022, par Multimedia Mike — Sega DreamcastPursuant to my recent post about finally understanding how Sega Dreamcast GD-ROM rips are structured, I was able to prepare the contents of various demo discs in a manner that makes exploration easy via the Internet Archive. This is due to the way that IA makes it easy to browse archives such as ZIP or ISO files (anything that 7zip knows how to unpack), and also presents the audio tracks for native playback directly through the web browser.
These are some of the interesting things I have found while perusing the various Dreamcast sampler discs.
Multimedia Formats
First and foremost : Multimedia-wise, SFD and ADX files abound on all the discs. SFD files are Sofdec, a middleware format used for a lot of FMV on Dreamcast games. These were little more than MPEG video files with a non-MPEG (ADPCM instead) audio codec. VLC will usually play the video portions of these files but has trouble detecting the audio. It’s not for lack of audio codec support because it can play the ADX files just fine.
It should be noted that Dreamcast Magazine Disc 11 has an actual .mpg file (as opposed to a .sfd file) that has proper MPEG audio instead instead of ADX ADPCM.
The only other multimedia format I know of that was used in any Dreamcast games was 4XM, used on Alone In The Dark : The New Nightmare. I wrote a simple C tool a long time to recover these files from a disc image I extracted myself. Rather than interpreting the ISO-9660 filesystem, the tool just crawled through the binary blob searching for ‘4XMV’ file signatures and using length data within the files for extraction.
Also, there are plentiful PVR files (in reference to the PowerVR2 GPU hardware that the DC uses) which ‘file’ dutifully identifies as “Sega PVR image”. There are probably tools to view them. It doesn’t appear to be a complicated format.
Scripting
I was fascinated to see Lua files on at least one of the discs. It turns out that MDK 2 leverages the language, as several other games do. But it was still interesting to see the .lua files show up in the Dreamcast version as well.That Windows CE Logo
Every Sega Dreamcast is famously emblazoned with a logo mentioning Microsoft Windows CE :
It has confused many folks. It also confused me until this exploratory exercise. Many would wonder if the Dreamcast booted up into some Windows CE OS environment that then ran the game, but that certainly wasn’t it. Indeed, Dreamcast was one of the last consoles that really didn’t have any kind of hypervisor operating system managing everything.
I found a file called rt2dc.exe on one sampler disc. At first, I suspected that this was a development utility for Windows to convert some “RT” graphical format into a format more suitable for the Dreamcast. Then, ‘file’ told me that it was actually a Windows EXE but compiled for the Hitachi SH-4 CPU (the brain inside the DC). Does the conversion utility run on the Dreamcast itself ? Then I analyzed the strings inside the binary and saw references to train stations. That’s when it started to click for me that this was the binary executable for the demo version of Railroad Tycoon 2 : Gold Edition, hence “rt2dc.exe”. Still, this provides some insight about whether Dreamcast “runs” Windows. This binary was built against a series of Windows CE libraries. The symbols also imply DirectX compatibility.
Here is a page with more info about the WinCE/DirectX variant for the Sega Dreamcast. It seems that this was useful for closing the gap between PC and DC ports of games (i.e., being able to re-use more code between the 2 platforms). I guess this was part of what made Dreamcast a dry run for the DirectXbox (later Xbox).
Here is a list of all the Dreamcast games that are known to use Windows CE.
Suddenly, I am curious if tools such as IDA Pro or Ghidra can possibly open up Windows CE binaries that contain SH-4 code. Not that I’m particularly interested in reverse engineering any algorithms locked up in Dreamcast land.
Tomb Raider Easter Egg
The volume 6 sampler disc has a demo of Tomb Raider : The Last Revelation. While inspecting the strings, I found an Easter egg. I was far from the first person to discover it, though, as seen on this The Cutting Room Floor wiki page (look under “Developer Message”). It looks like I am the first person to notice it on the Dreamcast version. It shows up at offset 0xE3978 in the Dreamcast (demo version) binary, if anyone with permissions wants to update the page.Web Browser
Then there’s the Web Browser for Sega Dreamcast. It seemed to be included on a lot of these sampler discs. But only mentioning the web browser undersells it– the thing also bundled an email client and an IRC client. It’s important to remember that the Dreamcast also had a keyboard peripheral.I need to check the timeline for when the web browser first became available vs. when the MIL-CD hack became known. My thinking is that there is no way that the web browser program didn’t have some security issues– buffer overflows and the like. It seems like this would have been a good method of breaking the security of the system.
Ironically, I suddenly can think of a reason why one might want to use advanced reverse engineering tools on Dreamcast binaries, something I struggled with just a few paragraphs ago.
Odds ‘n Ends
It’s always fun to find plain text files among video game assets and speculating on the precise meaning… while also marveling how long people have been struggling to correctly spell “length”.Internationalization via plain text files.
Another game (Slave Zero) saw fit to zip its assets. Maybe this was to save space in order to fit everything on the magazine sampler disc. Quizzically, this didn’t really save an appreciable amount of space.
Finally, all the discs have an audio track 2 that advises that the disc must be played in a Dreamcast console. Not unusual. However, volume 4 also has a Japanese lady saying the same thing on track 4. This is odd because track 4 is one of the GD area audio tracks and is not accessible with normal CD hardware. Further, she identifies the disc as a “Windows CE disc”.
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