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  • Converting Real Media with ffmpeg

    7 août 2013, par Eric Arenson

    I have a number of old crusty Real Media files I need to convert and was hoping to write a script to batch process them. I'm able to do a Real Media -> AVI conversion with FFMpegX, but when I try to replicate the conversion with ffmpeg, it always errors out with something like :

    [avi @ 0x10084fa00] Too large number of skipped frames 117425 > 60000

    It may have something to do with the funky format of these Real Media files :

    Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc

    Does anyone have any tips on either how to find out what FFMpegX is doing to make the conversion work, or a better way to go about using ffmpeg to do this ?

    EDIT

    Including the ffmpeg command (thank you to @Mondain for teaching me about the stream mapping !) and output :

    Command :

    ffmpeg -i cc121307pm.rm -map 0:8 -map 0:7 -c:v libx264 -c:a libfaac -b:a 32k test.avi

    Output :

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Aug  7 2013 12:29:30 with gcc 4.2.1 (GCC) (Apple Inc. build 5664)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=/usr/bin/gcc-4.2 --host-cflags='-Os -w -pipe -march=core2 -msse4.1 -mmacosx-version-min=10.6' --host-ldflags=-L/usr/local/lib --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[rm @ 0x10180f200] Unsupported stream type 00000265
    
[rm @ 0x10180f200] Unsupported stream type 00000652
    
[rm @ 0x10180f200] max_analyze_duration 5000000 reached at 5004000 microseconds
    
Input #0, rm, from 'input.rm':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    title           : 
    
    author          : 
    
    copyright       : ?2007
    
    comment         : 
    
  Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
[libx264 @ 0x101889c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
    
[libx264 @ 0x101889c00] profile High, level 1.3
    
Output #0, avi, to 'test.avi':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    INAM            : 
    
    author          : 
    
    ICOP            : ?2007
    
    ICMT            : 
    
    ISFT            : Lavf54.63.104
    
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 320x240, q=-1--1, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 22050 Hz, mono, s16, 32 kb/s
    
Stream mapping:
    
  Stream #0:8 -> #0:0 (rv20 -> libx264)
    
  Stream #0:7 -> #0:1 (cook -> libfaac)
    
Press [q] to stop, [?] for help
    
[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
Truncating packet of size 775215378 to 283607526
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 686581284 to 279055389
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 845942319 to 279042877
    
[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
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[rm @ 0x10180f200] Impossibly sized packet
    
input.rm: Input/output error
    
frame=    0 fps=0.0 q=0.0 Lsize=      10kB time=00:00:00.00 bitrate=N/A    
    
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  • Need help on ffmpeg batch script

    14 août 2013, par Olung

    Trying to make a ffmpeg batch scripts that makes proress 422 proxy files from raw .mov files thats located in many subfolders. So far i got this :

    #!/bin/bash
    

    
echo "drop source folder: "
    
read source
    

    
echo "drop destination folder: "
    
read des
    

    
find "$source" -name '*.mov' -exec sh -c 'ffmpeg -i "$0" -vcodec prores -profile:v 0 -an "$des/${0%%.mov}.mov"' {} \;
    
exit;

    But it doesn't output to the destination folder, only the source folder and ask for an overwrite - not what I want.

    I guess it's a simple parameter error that maybe some of you can spot out ?

    All help is kindly appreciated !

  • Getting either incorrect output resolution or FPS from ffmpeg

    5 novembre 2011, par Adam

    I am capturing an RTSP stream from a security camera, and transcoding it for (live streaming) to iphone, using OSX as the encoding platform.
    I have it working correctly, and Im tuning it.
    However, it seems that it is not outputting the requested resolution. This is my script

    /Applications/SecurityCamera/openRTSP -v -c -t rtsp://10.0.1.118/ch1-s1 | \
    
    /Applications/SecurityCamera/ffmpeg \
    
    -r 10 -i - \
    
    -y -an -ab 64000 -f mpegts -vcodec copy -s 960x640 \
    
    -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 \
    
    -subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16  -keyint_min 25 \
    
    -sc_threshold 40 -i_qfactor 0.71 -bt 400k -maxrate 524288 -bufsize 524288 \
    
    -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 \
    
    -aspect 960:640 -r 10 -g 10 -async 2 -\
    
    |/Applications/SecurityCamera/mediastreamsegmenter -b http://localhost:8080/\
    
      -f /Library/WebServer/Documents/ -i stream.m3u8 -t 10 -s 4 -D

    This is the status report :

    Input #0, h264, from 'pipe:':
    

    
  Duration: N/A, bitrate: N/A
    
  Stream #0.0: Video: h264, yuv420p, 1600x1200, 10 fps, 10 tbr, 1200k tbn, 20 tbc
    
  [mpegts @ 0x10100c200] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts
    
  Output #0, mpegts, to 'pipe:':
    
  Metadata:
    
    encoder         : Lavf52.93.0
    
    Stream #0.0: Video: libx264, yuv420p, 1600x1200 [PAR 1:1 DAR 4:3], q=2-31, 90k tbn, 10 tbc
    
Stream mapping:
    
  Stream #0.0 -> #0.0

    You can see that its working, but it is outputting 1600x1200 for some reason. (possibly -vcodec copy copies all codec parameters, not just the codec type ?)

    If I change the -vcodec copy to -vcodec libx264 then I get the correct status report (stating 960x640, correct), but the streaming switches to 2 FPS (why ? Im forcing both input and output !) and it halts after 54 frames (see output below)

    Seems stream 0 codec frame rate differs from container frame rate: 20.00 (20/1) -> 10.00 (20/2)
    
Input #0, h264, from 'pipe:':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0.0: Video: h264, yuv420p, 1600x1200, 10 fps, 10 tbr, 1200k tbn, 20 tbc
    
[buffer @ 0x100d02420] w:1600 h:1200 pixfmt:yuv420p
    
[scale @ 0x100d026f0] w:1600 h:1200 fmt:yuv420p -> w:960 h:640 fmt:yuv420p flags:0x4
    
[libx264 @ 0x10100d400] using SAR=1/1
    
[libx264 @ 0x10100d400] frame MB size (60x40) > level limit (1620)
    
[libx264 @ 0x10100d400] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowCTZ SlowAtom
    
[libx264 @ 0x10100d400] profile Constrained Baseline, level 3.0
    
[mpegts @ 0x10100c200] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts
    
Output #0, mpegts, to 'pipe:':
    
  Metadata:
    
    encoder         : Lavf52.93.0
    
    Stream #0.0: Video: libx264, yuv420p, 960x640 [PAR 1:1 DAR 3:2], q=10-51, 200 kb/s, 90k tbn, 10 tbc
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
read pmap fffps=  3 q=37.0 size=      37kB time=0.10 bitrate=3008.0kbits/s    bits/s    
    
video pid set at 100
    
found sequence start
    
  next segment value 1026000
    
written bytes 376 skipped 0
    
frame=   54 fps=  2 q=-1.0 Lsize=     160kB time=5.40 bitrate= 242.0kbits/s    
    
video:141kB audio:0kB global headers:0kB muxing overhead 12.872737%
    
frame I:6     Avg QP:34.68  size: 23524
    
[libx264 @ 0x10100d400] frame P:48    Avg QP:41.53  size:    75
    
[libx264 @ 0x10100d400] mb I  I16..4: 63.9%  0.0% 36.1%
    
[libx264 @ 0x10100d400] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.8%  0.1%  0.0%  0.0%  0.0%    skip:99.0%
    
[libx264 @ 0x10100d400] final ratefactor: 38.54
    
[libx264 @ 0x10100d400] coded y,uvDC,uvAC intra: 57.7% 22.3% 2.0% inter: 0.0% 0.1% 0.0%
    
[libx264 @ 0x10100d400] i16 v,h,dc,p: 23% 35% 27% 15%
    
[libx264 @ 0x10100d400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 32% 16%  4%  3%  3%  7%  4%  8%
    
[libx264 @ 0x10100d400] i8c dc,h,v,p: 83% 11%  5%  0%
    
[libx264 @ 0x10100d400] kb/s:214.43

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