<div dir="ltr">It's the same.<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Nov 8, 2013 at 9:58 AM, Pratik Bhoir <span dir="ltr"><<a href="mailto:pbhoir@blue-efficience.com" target="_blank">pbhoir@blue-efficience.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Evan, <div><br></div><div>Thank you for your reply.</div><div><br></div><div>Can you please clarify if you are using the same key frame extraction algorithm in pHash Pro? or this issue is fixed in Pro version?</div>
<div><br></div><div>Thank you,</div><div>Pratik</div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Nov 8, 2013 at 6:38 PM, Evan Klinger <span dir="ltr"><<a href="mailto:eklinger@phash.org" target="_blank">eklinger@phash.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi Pratik,<br><br></div>Unfortunately this is likely due to the key frame extraction algorithm used in pHash GPL for the video hash. We do not have a fix for it at this time.<br>
<br></div>Thank you<br>
Evan<br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Wed, Oct 30, 2013 at 9:53 AM, Pratik Bhoir <span dir="ltr"><<a href="mailto:pbhoir@blue-efficience.com" target="_blank">pbhoir@blue-efficience.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div>Hello pHash team,</div><div><br></div><div>My company is searching for a video fingerprint technology to automate more our processes.</div>
<div>Currently we are testing pHash open source for video hashing and depending on the results we might be interested in buying pHash Pro licence.</div>
<div><br></div><div>We came across what looks like to be an issue that pHash is not calculating enough hash (only one hash value, irrespective of length of the video) values for</div><div>mpeg1 and mpeg2 codecs.</div><div>
<br></div><div>Brief description of the issue: </div><div><br></div><div>System : Ubuntu 12.04 LTS</div><div>phash 0.9.6 (configured only with --enable-shared option)</div><div>CImg 1.4.9 (installed directly from Ubuntu repository)</div>
<div>ffmpeg 2.1 (configured only with --enable-shared option)</div><div><br></div><div>I have also tried all available versions of ffmpeg with the same result. </div><div><br></div><div>Though I edited one file before testing video hash,</div>
<div>1. cimgffmpeg.cpp : I edited this file because initially I was getting segfault while executing test_video. </div><div> I edited the function long GetNumberVideoFrames(const char *file) and float fps(const char *filename), in both functions I assigned AVformatContext *pFormatCtx = NULL; as mentioned in one of the support archive and it worked. URL: <a href="http://lists.phash.org/htdig.cgi/phash-support-phash.org/2013-January/000140.html" target="_blank">http://lists.phash.org/htdig.cgi/phash-support-phash.org/2013-January/000140.html</a></div>
<div><br></div><div><br></div><div>Using the examples provided in pHash package, all the video coding formats that I have tested are working well except mpeg1 and mpeg2.</div><div>I have tried different videos with various lengths(5min, 20min and 45 min) but result is always one hash value for mpeg1 and mpeg2.</div>
<div><br></div><div>Can you please look upon this issue and tell me where is the problem?</div><div><br></div><div>Thank you for your time and help,</div><div><br></div><div>- Pratik </div></div>
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