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• ffmpeg says : "option framerate not found"

  16 juillet 2013, par Jason

  Good afternoon.

  I've been trying to use ffmpeg to split a .mpeg into a sequence of .jpeg images. Please note that this is the inverse problem of the one specified here, but the problem I'm facing is not the same as the problem the author of that thread is facing.

  Specifically, I have tried all the following mpeg codecs available in my ffmpeg installation :

  DEV D  ffv1            FFmpeg video codec #1
  
  DEVSD  ffvhuff         Huffyuv FFmpeg variant
  
  DEVSDT mpeg1video      MPEG-1 video
  
  D V DT mpeg1video_vdpau MPEG-1 video (VDPAU acceleration)
  
  D V D  mpeg2_crystalhd MPEG-2 Video (CrystalHD acceleration)
  
  DEVSDT mpeg2video      MPEG-2 video
  
  DEVSDT mpeg4           MPEG-4 part 2
  
  D V D  mpeg4_crystalhd MPEG-4 Part 2 (CrystalHD acceleration)
  
  D V DT mpeg4_vdpau     MPEG-4 part 2 (VDPAU)
  
  D VSDT mpegvideo       MPEG-1 video
  
  D V DT mpegvideo_vdpau MPEG-1/2 video (VDPAU acceleration)
  
  D VSDT mpegvideo_xvmc  MPEG-1/2 video XvMC (X-Video Motion Compensation)
  
  DEVSD  msmpeg4         MPEG-4 part 2 Microsoft variant version 3
  
  D V D  msmpeg4_crystalhd MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)
  
  D VSD  msmpeg4v1       MPEG-4 part 2 Microsoft variant version 1
  
  DEVSD  msmpeg4v2       MPEG-4 part 2 Microsoft variant version 2

  I've tried supplying ffmpeg with all different codecs to try to split an input .mpeg video file with 2548 frames into 2548 .jpegs, by using the -vcodec option :

  ffmpeg -r 2548 -i frames.mpeg frames_%06d.jpg -vcodec $codec

  where $codec is any codec among the ones listed above, e.g. ffv1, mpeg4, etc. However, all my efforts result in the following error :

  [NULL @ 0x1948f20] Value 4707126720094797824.000000 for parameter 'probesize' out of range
  
  [NULL @ 0x1948f20] Value 4707126720094797824.000000 for parameter 'analyzeduration' out of range
  
  [NULL @ 0x1948f20] Value 4697254411347427328.000000 for parameter 'indexmem' out of range
  
  [NULL @ 0x1948f20] Value 4703785510416416768.000000 for parameter 'rtbufsize' out of range
  
  [NULL @ 0x1948f20] Value -4616189618054758400.000000 for parameter 'fpsprobesize' out of range
  
  [NULL @ 0x1948f20] Value 4607182418800017408.000000 for parameter 'f_err_detect' out of     range
  
  [NULL @ 0x1948f20] Value 4607182418800017408.000000 for parameter 'err_detect' out of range
  
  Option framerate not found.  

  Which is weird, because I've actually specified the frame rate parameter through the -r switch. I googled a bit and it appears that this error was mentioned approximately a year and a half ago on the ffmpeg bug tracker but that information makes little sense to me because it's relevant to the devs. Curiously, if I interchange the position of the parameters and put -r after -i or even after -vcodec, the error message changes to :

  [NULL @ 0x24abf20] Value 4707126720094797824.000000 for parameter 'probesize' out of range
  
  [NULL @ 0x24abf20] Value 4707126720094797824.000000 for parameter 'analyzeduration' out of range
  
  [NULL @ 0x24abf20] Value 4697254411347427328.000000 for parameter 'indexmem' out of range
  
  [NULL @ 0x24abf20] Value 4703785510416416768.000000 for parameter 'rtbufsize' out of range
  
  [NULL @ 0x24abf20] Value -4616189618054758400.000000 for parameter 'fpsprobesize' out of  range
  
  [NULL @ 0x24abf20] Value 4607182418800017408.000000 for parameter 'f_err_detect' out of  range
  
  [NULL @ 0x24abf20] Value 4607182418800017408.000000 for parameter 'err_detect' out of range
  
  [NULL @ 0x24b23c0] Value 4686111960511545344.000000 for parameter 'b' out of range
  
  [NULL @ 0x24b23c0] Value 4683532506232782848.000000 for parameter 'ab' out of range
  
  [NULL @ 0x24b23c0] Value 4705844345939427328.000000 for parameter 'bt' out of range
  
  [NULL @ 0x24b23c0] Value 4617315517961601024.000000 for parameter 'me_method' out of range
  
  [NULL @ 0x24b23c0] Value 4622945017495814144.000000 for parameter 'g' out of range
  
  [NULL @ 0x24b23c0] Value 4611686018427387904.000000 for parameter 'qmin' out of range
  
  [NULL @ 0x24b23c0] Value 4629418941960159232.000000 for parameter 'qmax' out of range
  
  [NULL @ 0x24b23c0] Value 4613937818241073152.000000 for parameter 'qdiff' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'wpredp' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'bug' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'er' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'err_detect' out of range
  
  [NULL @ 0x24b23c0] Value 4613937818241073152.000000 for parameter 'ec' out of range
  
  [NULL @ 0x24b23c0] Value 4620693217682128896.000000 for parameter 'ildctcmp' out of range
  
  [NULL @ 0x24b23c0] Value 4620693217682128896.000000 for parameter 'subq' out of range
  
  [NULL @ 0x24b23c0] Value 4696837138094751744.000000 for parameter 'ibias' out of range
  
  [NULL @ 0x24b23c0] Value 4696837138094751744.000000 for parameter 'pbias' out of range
  
  [NULL @ 0x24b23c0] Value 4642507528377204736.000000 for parameter 'lmin' out of range
  
  [NULL @ 0x24b23c0] Value 4660262442142531584.000000 for parameter 'lmax' out of range
  
  [NULL @ 0x24b23c0] Value 4696130710463840256.000000 for parameter 'flags2' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'threads' out of range
  
  [NULL @ 0x24b23c0] Value 4620693217682128896.000000 for parameter 'nssew' out of range
  
  [NULL @ 0x24b23c0] Value -4586705114244317184.000000 for parameter 'profile' out of range
  
  [NULL @ 0x24b23c0] Value -4586705114244317184.000000 for parameter 'level' out of range
  
  [NULL @ 0x24b23c0] Value 4623507967449235456.000000 for parameter 'skipcmp' out of range
  
  [NULL @ 0x24b23c0] Value 4642507528377204736.000000 for parameter 'mblmin' out of range
  
  [NULL @ 0x24b23c0] Value 4660262442142531584.000000 for parameter 'mblmax' out of range
  
  [NULL @ 0x24b23c0] Value 4643211215818981376.000000 for parameter 'mepc' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'bidir_refine' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'cqp' out of range
  
  [NULL @ 0x24b23c0] Value 4627730092099895296.000000 for parameter 'keyint_min' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'refs' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'directpred' out of range
  
  [NULL @ 0x24b23c0] Value 4618441417868443648.000000 for parameter 'sc_factor' out of range
  
  [NULL @ 0x24b23c0] Value 4643211215818981376.000000 for parameter 'mv0_threshold' out of range
  
  [NULL @ 0x24b23c0] Value 4630826316843712512.000000 for parameter 'b_sensitivity' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'compression_level' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'min_prediction_order' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'max_prediction_order' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'prediction_order_method' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'min_partition_order' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'max_partition_order' out of range
  
  [NULL @ 0x24b23c0] Value 4607182418800017408.000000 for parameter 'ticks_per_frame' out of range
  
  [NULL @ 0x24b23c0] Value 4611686018427387904.000000 for parameter 'color_primaries' out of range
  
  [NULL @ 0x24b23c0] Value 4611686018427387904.000000 for parameter 'color_trc' out of range
  
  [NULL @ 0x24b23c0] Value 4611686018427387904.000000 for parameter 'colorspace' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'aq_mode' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'rc_lookahead' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'lpc_type' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'lpc_passes' out of range
  
  [NULL @ 0x24b23c0] Value 4613937818241073152.000000 for parameter 'thread_type' out of range
  
  [NULL @ 0x24b23c0] Value -4616189618054758400.000000 for parameter 'request_sample_fmt' out of range
  
  frames.mpeg: could not find codec parameters

  I'm at a loss as to what to do with this problem, and am looking for some assistance.

  Kind regards,

  Jason

• Add a maintainer for the delogo filter

  2 juillet 2013, par Jean Delvare

  Add a maintainer for the delogo filter
  I volunteer to maintain the delogo filter for at least the year to
  
  come.
  Signed-off-by : Jean Delvare <khali@linux-fr.org>
  
  patch/commit split by commiter
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] MAINTAINERS

• Neutral net or neutered

  4 juin 2013, par Mans — Law and liberty

  In recent weeks, a number of high-profile events, in the UK and elsewhere, have been quickly seized upon to promote a variety of schemes for monitoring or filtering Internet access. These proposals, despite their good intentions of protecting children or fighting terrorism, pose a serious threat to fundamental liberties. Although at a glance the ideas may seem like a reasonable price to pay for the prevention of some truly hideous crimes, there is more than first meets the eye. Internet regulation in any form whatsoever is the thin end of a wedge at whose other end we find severely restricted freedom of expression of the kind usually associated with oppressive dictatorships. Where the Internet was once a novelty, it now forms an integrated part of modern society ; regulating the Internet means regulating our lives.

  Terrorism

  Following the brutal murder of British soldier Lee Rigby in Woolwich, attempts were made in the UK to revive the controversial Communications Data Bill, also dubbed the snooper’s charter. The bill would give police and security services unfettered access to details (excluding content) of all digital communication in the UK without needing so much as a warrant.

  The powers afforded by the snooper’s charter would, the argument goes, enable police to prevent crimes such as the one witnessed in Woolwich. True or not, the proposal would, if implemented, also bring about infrastructure for snooping on anyone at any time for any purpose. Once available, the temptation may become strong to extend, little by little, the legal use of these abilities to cover ever more everyday activities, all in the name of crime prevention, of course.

  In the emotional aftermath of a gruesome act, anything with the promise of preventing it happening again may seem like a good idea. At times like these it is important, more than ever, to remain rational and carefully consider all the potential consequences of legislation, not only the intended ones.

  Hate speech

  Hand in hand with terrorism goes hate speech, preachings designed to inspire violence against people of some singled-out nation, race, or other group. Naturally, hate speech is often to be found on the Internet, where it can reach large audiences while the author remains relatively protected. Naturally, we would prefer for it not to exist.

  To fulfil the utopian desire of a clean Internet, some advocate mandatory filtering by Internet service providers and search engines to remove this unwanted content. Exactly how such censoring might be implemented is however rarely dwelt upon, much less the consequences inadvertent blocking of innocent material might have.

  Pornography

  Another common target of calls for filtering is pornography. While few object to the blocking of child pornography, at least in principle, the debate runs hotter when it comes to the legal variety. Pornography, it is claimed, promotes violence towards women and is immoral or generally offensive. As such it ought to be blocked in the name of the greater good.

  The conviction last week of paedophile Mark Bridger for the abduction and murder of five-year-old April Jones renewed the debate about filtering of pornography in the UK ; his laptop was found to contain child pornography. John Carr of the UK government’s Council on Child Internet Safety went so far as suggesting a default blocking of all pornography, access being granted to an Internet user only once he or she had registered with some unspecified entity. Registering people wishing only to access perfectly legal material is not something we do in a democracy.

  The reality is that Google and other major search engines already remove illegal images from search results and report them to the appropriate authorities. In the UK, the Internet Watch Foundation, a non-government organisation, maintains a blacklist of what it deems ‘potentially criminal’ content, and many Internet service providers block access based on this list.

  While well-intentioned, the IWF and its blacklist should raise some concerns. Firstly, a vigilante organisation operating in secret and with no government oversight acting as the nation’s morality police has serious implications for freedom of speech. Secondly, the blocks imposed are sometimes more far-reaching than intended. In one incident, an attempt to block the cover image of the Scorpions album Virgin Killer hosted by Wikipedia (in itself a dubious decision) rendered the entire related article inaccessible as well as interfered with editing.

  Net neutrality

  Content filtering, or more precisely the lack thereof, is central to the concept of net neutrality. Usually discussed in the context of Internet service providers, this is the principle that the user should have equal, unfiltered access to all content. As a consequence, ISPs should not be held responsible for the content they deliver. Compare this to how the postal system works.

  The current debate shows that the principle of net neutrality is important not only at the ISP level, but should also include providers of essential services on the Internet. This means search engines should not be responsible for or be required to filter results, email hosts should not be required to scan users’ messages, and so on. No mandatory censoring can be effective without infringing the essential liberties of freedom of speech and press.

  Social networks operate in a less well-defined space. They are clearly not part of the essential Internet infrastructure, and they require that users sign up and agree to their terms and conditions. Because of this, they can include restrictions that would be unacceptable for the Internet as a whole. At the same time, social networks are growing in importance as means of communication between people, and as such they have a moral obligation to act fairly and apply their rules in a transparent manner.

  Facebook was recently under fire, accused of not taking sufficient measures to curb ‘hate speech,’ particularly against women. Eventually they pledged to review their policies and methods, and reducing the proliferation of such content will surely make the web a better place. Nevertheless, one must ask how Facebook (or another social network) might react to similar pressure from, say, a religious group demanding removal of ‘blasphemous’ content. What about demands from a foreign government ? Only yesterday, the Turkish prime minister Erdogan branded Twitter ‘a plague’ in a TV interview.

  Rather than impose upon Internet companies the burden of law enforcement, we should provide them the latitude to set their own policies as well as the legal confidence to stand firm in the face of unreasonable demands. The usual market forces will promote those acting responsibly.

  Further reading

  • Tory-Labour pact could save data bill, says Lord Howard
  • Internet companies warn May over ‘snooper’s charter’
  • Snooper’s charter ‘should be replaced by strengthening of existing powers’
  • Exclusive : ‘Snooper’s charter’ would not have prevented Woolwich attack, says MI5
  • Search engines urged to block more online porn sites
  • Why technology must be the solution to child abuse material online
  • Google must take more action to police explicit content, says Vince Cable
  • Facebook bows to campaign groups over ‘hate speech’
  • Facebook sexism campaign attracts thousands online
  • Türkischer Ministerpräsident : Twitter ist eine Plage
  • Valls : « La traque sur Internet doit être une priorité pour nous »
  • La Cnil, futur juge d’Internet
  • “National security matter” : Third agency caught unilaterally blocking web sites