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Old 21st July 2019, 04:51   #1  |  Link
TCmullet
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DirectShowSource could not open as...

Attached is a short (less than 1 sec) MP4 clip that i cannot open in DirectShowSource. MediaInfo does show it as AVC video and AAC audio. Could perhaps someone here kindly suggest a way to open it, please? It HAS to be opened by DirectShowSource, as DSS has features I need to properly process it. (Of course the real file is much larger, but this attached sample is enough to demonstrate the error.)

It plays fine in SMPlayer, VLC player, and Windows Media Player.

Edit: I should have included in the title that this is a VFR file and the reason for which I need to use DirectShowSource instead of my usual DGSource.
Attached Files
File Type: zip 2018-09-21.1900.wv.MS-v-FL.1sec-sample.zip (296.5 KB, 11 views)

Last edited by TCmullet; 21st July 2019 at 14:52.
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Old 21st July 2019, 10:26   #2  |  Link
FranceBB
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I would strongly suggest you to use a better indexer, like FFMpegSource2, LWLibavVideoSource, LSMASH or DGAVCDecode.
DirectShowSource uses your internal codec installed in the OS to decode the video and it's thought to be not as frame accurate as other indexers; for this reason I consider it to be ok-ish for quick and dirt view, but you should use better alternatives when they are available.
That said, if you really wanna use DirectShowSource to open pretty much any source, make sure you have the LAV Filters (Decoders) installed.
If you want, you can install the K-Lite Codec Pack which installs pretty much any codec you need (including the LAV Filters / Decoders).

Cheers,
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Old 21st July 2019, 12:16   #3  |  Link
tebasuna51
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I can confirm than:

Quote:
A=LSMASHAudioSource("C:\tmp\2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4")
V=LSMASHVideoSource("C:\tmp\2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4") # MOV,MP4,3GP
or
A=DirectShowSource("C:\tmp\aud_graph.grf", video=False) # audio only (LAV Audio Decoder, video renderer removed)
V=DirectShowSource("C:\tmp\vid_graph.grf", audio=False) # video only (LAV Video Decoder, audio renderer removed)
AudioDub(V, A)
works without problem.
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Last edited by tebasuna51; 21st July 2019 at 12:18. Reason: typo
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Old 21st July 2019, 14:14   #4  |  Link
TCmullet
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Quote:
Originally Posted by FranceBB View Post
I would strongly suggest you to use a better indexer, like FFMpegSource2, LWLibavVideoSource, LSMASH or DGAVCDecode.
DirectShowSource uses your internal codec installed in the OS to decode the video and it's thought to be not as frame accurate as other indexers; for this reason I consider it to be ok-ish for quick and dirt view, but you should use better alternatives when they are available.
That said, if you really wanna use DirectShowSource to open pretty much any source, make sure you have the LAV Filters (Decoders) installed.
If you want, you can install the K-Lite Codec Pack which installs pretty much any codec you need (including the LAV Filters / Decoders).

Cheers,
Frank.
I specifically have to use DSS because it's a darn VFR video. And I've learned that it can have certain extra clauses so as to read:
DirectShowSource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fps=59.94, convertfps=true)

"...uses your internal codec installed in the OS to decode the video and it's thought to be not as frame accurate as other indexers..." It is certainly extremely frame accurate when the several video players play the file (assuming directshow is what the players are using). So when I see the players playing it right, and DSS has the convertfps feature (which i've SEEN to solve the VFR problem before), it makes sense to use DSS this time.

I've had K-lite installed in past systems, but I'm not crazy about it. I can't remember why, but vaguely recall it may have messed up a system. I DO have ffdshow with "audio decoder configuration". It has AAC set to "libavcodec". (vs "disabled" or "libfaad2") Does this tell us anything?

Is THIS what I need?
https://www.fosshub.com/LAV-Filters.html

Last edited by TCmullet; 21st July 2019 at 14:26.
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Old 21st July 2019, 14:16   #5  |  Link
TCmullet
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Quote:
Originally Posted by tebasuna51 View Post
I can confirm than:



works without problem.
I suppose I could obtain GraphEdit and learn to use it. However, does it have a "convertfps" feature? (This is the reason I felt I needed to use DSS as DSS has that feature.)
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Old 21st July 2019, 14:49   #6  |  Link
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And besides... If SMplayer, VLC, and WMP can ALL play these VFR files in perfect sync anywhere throughout the file, shouldn't we be able to access whatever system resources THEY are accessing and use them for the same purpose, albeit in Avisynth rather than a media player?
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Old 21st July 2019, 14:52   #7  |  Link
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ffms can convert vfr to cfr as well:
E.g.
Code:
DirectShowSource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fps=59.94, convertfps=true)
is similar to
Code:
a=ffaudiosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4")
v=ffvideosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fpsnum=60000, fpsden=1001)
AudioDub(v, a)

Last edited by sneaker_ger; 21st July 2019 at 17:14.
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Old 21st July 2019, 14:53   #8  |  Link
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Quote:
Originally Posted by TCmullet View Post
And besides... If SMplayer, VLC, and WMP can ALL play these VFR files in perfect sync anywhere throughout the file, shouldn't we be able to access whatever system resources THEY are accessing and use them for the same purpose, albeit in Avisynth rather than a media player?
The problem is that we are mapping variable framerates into a "system" that's purely designed for constant framerates (AviSynth/AVI). Either you convert to CFR or you "copy" the timestamps outside of AviSynth from source to target file.
http://avisynth.nl/index.php/VFR
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Old 21st July 2019, 16:57   #9  |  Link
TCmullet
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Quote:
Originally Posted by sneaker_ger View Post
ffms can convert vfr to cfr as well:
E.g.
Code:
DirectShowSource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fps=59.94, convertfps=true)
is similar to
Code:
a=ffaudiosource("DirectShowSource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4")
v=ffvideosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fpsnum=60000, fpsden=1001)
AudioDub(v, a)
Does that code work with my sample file? Are you implying that DSS won't blow up IF it's fed directly to ffaudiosource, even though it DOES blow when fed directly to Avisynth?
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Old 21st July 2019, 16:59   #10  |  Link
TCmullet
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Quote:
Originally Posted by sneaker_ger View Post
The problem is that we are mapping variable framerates into a "system" that's purely designed for constant framerates (AviSynth/AVI). Either you convert to CFR or you "copy" the timestamps outside of AviSynth from source to target file.
http://avisynth.nl/index.php/VFR
Yes. I realize that. But it seems to me that if VLC, etc. can properly sync the VFR audio and video, then we should be able to as well, THEN apply frame duplication-decimation as needed for our CFR environment.

Edit: I got to realizing later that my question here is partly irrelevant. I was driving to work thinking about this; the matter of PTSes guiding a player. It dawned on me that the players are playing the frames at a variable rate!! I was assuming it dups-and-decimates like WE WANT to do, but as a mere player, there's no reason why it would have to do that. It can simply play the video and audio chunks at whatever timestamp the files says to EVEN if it is variable! So I apologize for this digression.

Last edited by TCmullet; 22nd July 2019 at 04:21.
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Old 21st July 2019, 17:14   #11  |  Link
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Quote:
Originally Posted by TCmullet View Post
Does that code work with my sample file? Are you implying that DSS won't blow up IF it's fed directly to ffaudiosource, even though it DOES blow when fed directly to Avisynth?
Sorry, I made a copy&paste-mistake. It would blow up. Corrected now.
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Old 21st July 2019, 21:03   #12  |  Link
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Quote:
Originally Posted by TCmullet View Post
I specifically have to use DSS because it's a darn VFR video.
Like sneaker_ger say you the same can be done with FFMS2 or LSMASH.

BTW to recode VFR video I extract the timecodes/timestamps of video, recode the video without add/delete new video frames (without ConvertFPS) and after restore the timecodes when mux.
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Old 22nd July 2019, 20:00   #13  |  Link
TCmullet
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Quote:
Originally Posted by sneaker_ger View Post
ffms can convert vfr to cfr as well:
E.g.
Code:
DirectShowSource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fps=59.94, convertfps=true)
is similar to
Code:
a=ffaudiosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4")
v=ffvideosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fpsnum=60000, fpsden=1001)
AudioDub(v, a)
Good news, this works. Bad news, when I substitute the full 1.5 GB file from which I had cut the sample (using AviDemux), I now get an error: FFaudiosource: no audio track found

In both cases, the .ffindex file was built. Any ideas as to what's happening??

Edit: I created some more sample files, each starts from the beginning of the original file:
1min
10min
15min
20min
1 min and 10 min work fine. But 15 min and 20 min have the error.

When I create a file that is the last 5 minutes of the 15 min. file, the error occurs. Makes me think something is funky in the file that Avidemux (and all players) forgive, but ffaudiosource does not.

I created a file that starts at 15 min. in and goes to the end of the program. Total minutes is 55 min. And it WORKS. Sooo.... what glitch could be in a file that would cause ffaudiosource to say "no audio track found"?
...
I used Avidemux to save audio to PCM and use wavsource(). Yes, a data corruption exists at 11:22. I'm able to manually get around it in Avisynth. But I still wonder why the "no audio track found" message, when there IS one, but simply has a bad spot.

Last edited by TCmullet; 22nd July 2019 at 20:57. Reason: Further info
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Old 22nd July 2019, 22:58   #14  |  Link
StainlessS
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Wanna try this.

GetSeq.avsi
Code:
# GetSeq.avsi

Function GetSeq(String vFn,String "aFn",Val "fpsNum",Val "fpsDen") {
/*
    Req:- RT_Stats, FFMS, LSmash.

    Specify FrameRate using fpsnum (Numerator) and fpsden (Denominator)    # *** INGNORED if AVI ***
        num only,  eg fpsnum=25.0,               FrameRate = 25.0  FPS
        num & den, eg fpsnum=24000 fpsden=1001,  FrameRate = 23.976 FPS (Both should be type Int).
        neither specified                        FrameRate = UnDefined, ie whatever source filter thinks it is.
        ALWAYS:- use named args if using fpsnum/fpsden, argument order may change.
*/
    Function IsISOFileName(String s)  {s=RT_GetFileExtension(s) Return(s==".mov"||s==".mp4"||s==".m4v"||s==".3gp"||s==".3g2"||s==".mj2"||s==".dvb"||s==".dcf"||s==".m21")}
    Function IsRiffFileName(String s) {s=RT_GetFileExtension(s) Return(s==".avi"||s==".wav")}
    myName="GetSeq: "                                           aFn = Default(aFn,"")           aFn = (aFn=="") ? vFn : aFn
    Assert(vFn!="",RT_String("%svFn Cannot be ''",myName))      vFn = vFn.RT_GetFullPathName    IsRiffV = vFn.IsRiffFileName    IsIsoV = vFn.IsISOFileName
    Assert(aFn!="",RT_String("%saFn Cannot be ''",myName))      aFn = aFn.RT_GetFullPathName    IsRiffA = aFn.IsRiffFileName    IsIsoA = aFn.IsISOFileName
    c=0 a=0
    def = fpsnum.Defined ? (fpsden.Defined ?1:0) : (!fpsden.Defined) ? 2 : -1    # 0=NumOnlyDef, 1=BothDef, 2=NoneDef, -1=DenOnlyError
    Assert(0<=def,myName+"Cannot specify framerate using fpsden only")
    #              Rate=num            :  Rate=num/den             : Rate=Undefined
    num=(def==0) ? Round(fpsnum * 1000): (def==1) ?    Int(fpsnum) : RT_Undefined
    den=(def==0) ?                1000 : (def==1) ?    fpsden      : RT_Undefined
    #
    Try { # 1st Try specialized AVI
        c = (IsRiffV)                            ? vFn.AviSource                                                                                                     : NOP
        (c.IsClip)                               ? RT_DebugF("AviSource opened Video\n  '%s'",vFn,name=myName)                                                       : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }
    Try {
        a = (c.IsClip && c.HasAudio && aFn==vFn) ? c : (IsRiffA) ? aFn.WavSource                                                                                     : NOP
        (a.IsClip && a.HasAudio)                 ? RT_DebugF("%s opened Audio\n  '%s'",(c.IsClip && c.HasAudio && aFn==vFn)?"AviSource":"WavSource",aFn,name=myName) : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }

    # Next try specialized ISO LSMash
    Try {
        IsOpenV=(c.IsClip && c.HasVideo)
        c = (IsIsoV)                       ? LSMASHVideoSource(vFn,fpsnum=num,fpsden=den)                          : c
        (IsIsoV)                           ? RT_DebugF("LSMASHVideoSource opened Video\n  '%s'",vFn,name=myName)   : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }
    Try {
        IsOpenA=(a.IsClip && a.HasAudio)
        a = (IsIsoA)                       ? LSMASHAudioSource(aFn)                                                : a
        (IsIsoA)                           ? RT_DebugF("LSMASHAudioSource opened Audio\n  '%s'",aFn,name=myName)   : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }

     # Next try FFMS2
    Try {
        IsOpenV=(c.IsClip && c.HasVideo)
        (!IsOpenV)    ? FFIndex(vFn)                                                    : NOP
        c=(!IsOpenV)  ? FFVideoSource(vFn,fpsnum=num,fpsden=den)                        : c
        (!IsOpenV)    ? RT_DebugF("FFVideoSource opened Video\n  '%s'",vFn,name=myName) : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }
    Try {
        IsOpenA=(a.IsClip && a.HasAudio)
        a=(!IsOpenA)  ? FFAudioSource(aFn)                                              : a
        (!IsOpenA)    ? RT_DebugF("FFAudioSource opened Audio\n  '%s'",aFn,name=myName) : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }

    # Next try LSmash non ISO Video
    Try {
        IsOpenV=(c.IsClip && c.HasVideo)
        c = (!IsOpenV && !IsIsoV)          ? LWLibavVideoSource(vFn,fpsnum=num,fpsden=den)                         : c
        (!IsOpenV && !IsIsoV)              ? RT_DebugF("LWLibavVideoSource opened Video\n  '%s'",vFn,name=myName)  : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }
    Try {
        IsOpenA=(a.IsClip && a.HasAudio)
        a = (!IsOpenA && !IsIsoA)      ? LWLibavAudioSource(aFn)                                                   : a
        (!IsOpenA && !IsIsoA)          ? RT_DebugF("LWLibavAudioSource opened Audio\n  '%s'",aFn,name=myName)      : NOP
    } catch (msg) { RT_DebugF("Catch: %s",msg,name=myName) }

    Assert(c.IsClip, RT_String("%s failed open on\n  '%s'",myName,vFn))
    (!c.HasAudio && a.IsClip && a.HasAudio) ? AudioDubEx(c,a)                                                      : c
    (!HasAudio) ? RT_DebugF("Audio failed Open on\n  '%s",aFn,name=myName)                                         : NOP
    return Last
}
EDIT: Oops, cockup with the names fpsnum/num fpsden/den. Fixed.

GetSeq_Test.avs
Code:
######
#GetSeq_Test.avs
######

#FN="10Bit_Standard8_Scan_16FPS.avi"     # This 10 bit dont load with Avisource(), [leastwise not on my system, codec v210, and no audio]
#FN="ALTEST2.mp4"
#FN="heima_720p_500.mp4"
FN="tears_of_steel_1080pwebm.webm"

FN=RT_GetFullPathName(FN)

Getseq(FN,fpsnum=33000,fpsden=1001)     # Test 33000/1001
Info
EDIT: DebugView output
Code:
00000040    22:24:39.471    InitExternalPlugins:
00000041    22:24:39.471    InitExternalPlugins: Auto load plugins script ENTRY
00000042    22:24:39.471    InitExternalPlugins:
00000043    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo:
00000044    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: VersionString      = 'AviSynth+ 0.1 (r2900, MT, i386)'
00000045    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Avisynth Bitness   = 32
00000046    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: ProcessName        = 'C:\Program Files (x86)\DAUM\PotPlayer\PotPlayerMini.exe'
00000047    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: OSVersionString    = 'Windows 7 (x64) Service Pack 1.0 (Build 7601)'
00000048    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: OSVersionNumber    = 6.100000
00000049    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: CPUName            = 'Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz / Yorkfield (Core 2 Quad) 6M'
00000050    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Cores              = 04:04 (Phy:Log)
00000051    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: CPU Extensions     = 'MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1'
00000052    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Total Memory       = 12221MB
00000053    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Avail Memory       = 9890MB'
00000054    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Screen Res         = 1920x1080
00000055    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Screen BitPerPixel = 32
00000056    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo: Time               = 'Monday 22 July 2019 22:24:39[GMT Daylight Time]'
00000057    22:24:39.471    InitExternalPlugins:ShowAvsInitInfo:
00000058    22:24:39.471    InitExternalPlugins:AvsInit_Load_CPP_Plugin: DGDecode.DLL                     LOADED   OK
00000059    22:24:39.471    InitExternalPlugins:AvsInit_Load_C_Plugin:   ffms2.dll                        LOADED   OK
00000060    22:24:39.487    InitExternalPlugins:AvsInit_Import_Avsi:     ffms2.avsi                       IMPORTED OK
00000061    22:24:39.487    InitExternalPlugins:AvsInit_Load_CPP_Plugin: LSMASHSource.dll                 LOADED   OK
00000062    22:24:39.830    GetSeq: FFVideoSource opened Video
00000063    22:24:39.830    GetSeq:   'D:\GetSeq_Test\tears_of_steel_1080pwebm.webm'
00000064    22:24:40.017    GetSeq: FFAudioSource opened Audio
00000065    22:24:40.017    GetSeq:   'D:\GetSeq_Test\tears_of_steel_1080pwebm.webm'
And for another audio-less 10 bit file
Code:
00000127    22:28:31.526    GetSeq: Catch: AVISource: couldn't locate a decompressor for fourcc v210
00000128    22:28:31.526    GetSeq: (D:\GetSeq_Test\GetSeq_Test.avs, line 26)
00000129    22:28:31.604    GetSeq: FFVideoSource opened Video
00000130    22:28:31.604    GetSeq:   'D:\GetSeq_Test\10Bit_Standard8_Scan_16FPS.avi'
00000131    22:28:31.604    GetSeq: Catch: FFAudioSource: No audio track found
00000132    22:28:31.604    GetSeq: (D:\GetSeq_Test\GetSeq_Test.avs, line 55)
00000133    22:28:31.619    GetSeq: Catch: LWLibavAudioSource: failed to get the audio track.
00000134    22:28:31.619    GetSeq: (D:\GetSeq_Test\GetSeq_Test.avs, line 67)
00000135    22:28:31.619    GetSeq: Audio failed Open on
00000136    22:28:31.619    GetSeq:   'D:\GetSeq_Test\10Bit_Standard8_Scan_16FPS.avi
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Old 18th November 2019, 19:08   #15  |  Link
TCmullet
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I've been using DGSource for most of my files, which are from my capture device (Hauppauge) and are CFR. I have a skeleton set up to use that in most cases. But cases where there is VFR (variable frame rate) video, I use this:

Code:
a=ffaudiosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4")
v=ffvideosource("2018-09-21.1900.wv.MS-v-FL.1sec-sample.mp4", fpsnum=60000, fpsden=1001)
AudioDub(v, a)
I had a theory... Why do I need to use DGSource even for CFR videos? I have to separate the video from the audio (saving to .wav), whereas ffaudiosource can get it directly from the video (.mp4 or .TS) as per the above example. The conversion to CFR is harmlessly redundant.

I ran a serious test on one file, running it both ways. The scripts were virtually identical. Sound sync was slightly different but nothing I couldn't tweak for each script. I run the output from VirtualDub out to a file with MagicYUV codec. The test results are SHOCKING! My normal DGSource and .wav took 48 minutes. The one with ffvideosource took only 20 minutes! WHY LESS THAN HALF??? It's true that .wav takes more space and more I/O time than audio that stays compressed (and read via ffaudiosource). Perhaps I ought to test using the audio converted to .wav then open IT with wavsource(), for a fair comparison of ffvideosource to DGSource. But still, I am shocked by the current results and am inclined to shift all my processing to ffvideosource() Why is ffvideosource over TWICE the speed. of DGSource?

Update: I did one more run with ffvideosource. This time the audio came via .wav and wavsource(). Perhaps some of the savings was ffaudiosource getting audio directly from the compact aac within my TS file. Actually it wasn't. This run took only 22 minutes, very close to the 20 minute run! SO... why is ffvideosource so much faster than DGSource? I experienced the scrubbing problem of ffvideosource, which is understandable. I suspect DGSource is more sophisticated allowing the fully frame independent scrubbing. But if my editing needs are few, then scrubbing is not a problem as long as ffvideosource is accurate. The thing that made me question the need for DGSource was that ffvideosource is building it's OWN index, parallel to the one I manually create via DGIndexNV. So ffvideo SHOULD be just as frame-accurate, right? So my main question remains... why is ffvideosource so much faster? TIA to all.

Last edited by TCmullet; 19th November 2019 at 17:41. Reason: Clarify that this is asking about ffvideosource() vs DGSource()
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Old 19th November 2019, 21:48   #16  |  Link
MeteorRain
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Regarding dgsource speed. It uses your graphics card video decoder to decode, while ff is likely to use your CPU to decode.
If there's an obvious difference on speed, it would be a performance difference between your graphics card video decoder and your CPU.

What's your graphics card, and what's your CPU?
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Old 26th November 2019, 13:58   #17  |  Link
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Originally Posted by MeteorRain View Post
Regarding dgsource speed. It uses your graphics card video decoder to decode, while ff is likely to use your CPU to decode.
If there's an obvious difference on speed, it would be a performance difference between your graphics card video decoder and your CPU.

What's your graphics card, and what's your CPU?
Graphics? Terrible. So bad by today's standards that I'm embarrassed to say. (And I'd have to dig around/figure out what I have.) CPU? Moderately good (but old). A Xeon 4-core, 8-thread workstation. Thank you for solving the mystery. I was starting to wonder if that might be the solution. Actually, I had a clue from a different thread where I was talking about DGSource not being able to decode H.265, and Don himself refuted me. And through that discussion, my archaic graphics adapter got flushed into embarrassing view. (To me, it was slick. Bought it from a used PC rebuilder--biggest I had had--same guy that sold me the Xeon. And this was only 3 years ago. But the world went by too fast for me.)
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Old 26th November 2019, 16:09   #18  |  Link
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And of course, the CPU utilization is running only 22%, as ff is not multithreading and therefore it's using only one real core out of my 4 real cores. But it's still faster than with my DGSource environment.

One special plus with DGSource is that when I was ransomware attacked 2 years ago and the system was chock full of "gigaquads" of video files waiting for me to work on, I discovered months later that both DGSource and Mpeg2Source would SKIP OVER the corrupted (encrypted) header to find that other than the 1st few seconds, the rest of the video and audio was INTACT! Gee, was I thrilled to discover THAT! I don't have $6000 to pay an evil extortioner.
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Old 26th November 2019, 16:29   #19  |  Link
Groucho2004
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Originally Posted by TCmullet View Post
And of course, the CPU utilization is running only 22%, as ff is not multithreading and therefore it's using only one real core out of my 4 real cores.
FFVideoSource is multi-threaded.
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Old 26th November 2019, 19:40   #20  |  Link
videoh
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Originally Posted by TCmullet View Post
One special plus with DGSource is that when I was ransomware attacked 2 years ago and the system was chock full of "gigaquads" of video files waiting for me to work on, I discovered months later that both DGSource and Mpeg2Source would SKIP OVER the corrupted (encrypted) header to find that other than the 1st few seconds, the rest of the video and audio was INTACT! Gee, was I thrilled to discover THAT! I don't have $6000 to pay an evil extortioner.
Great to hear! Did the other source filters have a problem with those files?
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