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Preload and Interleaving
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tjax
Newbie
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11. February 2005 @ 03:44 |
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Hello,
Is there a tool that diplays the preload and interleave values for a given AVI file? I have an XVID/AC3 AVI and for some reason I want to find out how the streams were interleaved.
Thanks.
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tjax
Newbie
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11. February 2005 @ 07:12 |
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I just discovered that the preload is displayed by VirtualDub in the "AVI Information" window.
The Interleaving seems to be reported by GSpot. However, after saving some AVIs from VirtualDubMod with different settings for the AC3 audio interleaving (256 ms, 512 ms), I noticed that GSpot reported the same thing each time: 1 audio frame (32 ms). I compared the files and they seem to be quite different, so I guess VirtualDubMod really interleaves the streams based on my settings, and it is GSpot that reports an incorrect value.
So, is there another tool that can analyze an AVI and display the correct interleaving?
This message has been edited since posting. Last time this message was edited on 11. February 2005 @ 07:15
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The_OGS
Senior Member
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14. February 2005 @ 19:32 |
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I didn't know GSpot would report that.
Interleave for AVI with VBR MP3 audio should be every 1 frame.
With CBR or AC3 audio, interleave can be extended to every 10 frames, resulting in a slightly smaller filesize.
I can quickly re-interleave a file and, depending on the filesize, based on these rule o' thumb settings, I can estimate interleave fairly accurately.
Playback from harddisk, with CBR MP3 or AC3 audio, is 'best-case' scenario and will not require tight interleave.
Playback from Optical drive with VBR audio is 'worst-case' scenario, and good playback performance will then require every-frame interleave :-)
Regards
ABit AB9 Pro
Intel Core 2 Duo E6420 @ 2.4GHz
2GB OCZ PC2-6400 Platinum XTC R2
ATI Radeon X1900XT 512MB
Enermax Liberty 620W
320GB/16MB WD, 150GB/16MB Raptor
Plextor PX-755SA DVD (SATA)
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The_OGS
Senior Member
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14. February 2005 @ 19:33 |
Link to this message
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I didn't know GSpot would report that.
Interleave for AVI with VBR MP3 audio should be every 1 frame.
With CBR or AC3 audio, interleave can be extended to every 10 frames, resulting in a slightly smaller filesize.
I can quickly re-interleave a file and, depending on the filesize, based on these rule o' thumb settings, I can estimate interleave fairly accurately.
Playback from harddisk, with CBR MP3 or AC3 audio, is 'best-case' scenario and will not require tight interleave.
Playback from Optical drive with VBR audio is 'worst-case' scenario, and good playback performance will then require every-frame interleave :-)
Regards
ABit AB9 Pro
Intel Core 2 Duo E6420 @ 2.4GHz
2GB OCZ PC2-6400 Platinum XTC R2
ATI Radeon X1900XT 512MB
Enermax Liberty 620W
320GB/16MB WD, 150GB/16MB Raptor
Plextor PX-755SA DVD (SATA)
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The_OGS
Senior Member
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14. February 2005 @ 19:33 |
Link to this message
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I didn't know GSpot would report that.
Interleave for AVI with VBR MP3 audio should be every 1 frame.
With CBR or AC3 audio, interleave can be extended to every 10 frames, resulting in a slightly smaller filesize.
I can quickly re-interleave a file and, depending on the filesize, based on these rule o' thumb settings, I can estimate interleave fairly accurately.
Playback from harddisk, with CBR MP3 or AC3 audio, is 'best-case' scenario and will not require tight interleave.
Playback from Optical drive with VBR audio is 'worst-case' scenario, and good playback performance will then require every-frame interleave :-)
Regards
ABit AB9 Pro
Intel Core 2 Duo E6420 @ 2.4GHz
2GB OCZ PC2-6400 Platinum XTC R2
ATI Radeon X1900XT 512MB
Enermax Liberty 620W
320GB/16MB WD, 150GB/16MB Raptor
Plextor PX-755SA DVD (SATA)
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Advertisement
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The_OGS
Senior Member
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14. February 2005 @ 19:33 |
Link to this message
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I didn't know GSpot would report that.
Interleave for AVI with VBR MP3 audio should be every 1 frame.
With CBR or AC3 audio, interleave can be extended to every 10 frames, resulting in a slightly smaller filesize.
I can quickly re-interleave a file and, depending on the filesize, based on these rule o' thumb settings, I can estimate interleave fairly accurately.
Playback from harddisk, with CBR MP3 or AC3 audio, is 'best-case' scenario and will not require tight interleave.
Playback from Optical drive with VBR audio is 'worst-case' scenario, and good playback performance will then require every-frame interleave :-)
Regards
ABit AB9 Pro
Intel Core 2 Duo E6420 @ 2.4GHz
2GB OCZ PC2-6400 Platinum XTC R2
ATI Radeon X1900XT 512MB
Enermax Liberty 620W
320GB/16MB WD, 150GB/16MB Raptor
Plextor PX-755SA DVD (SATA)
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