Re: [Flashcoders] Estimate FLV file size?
To be picky about nomenclature -- Amongst those in the know, b is bit and B is byte -- so 10 Mbps is 10 megabits per second but 12 MB is twelve megabytes. It's also totally acceptable (and advocated by at least one proposed standard) to use the word bit fully (e.g., 512 kbit/s). In practical use, I've only ever seen kbps/Mbps refer to bitrates, regardless of capitalization. When rates are used with bytes, I always see a slash instead of the p -- that is, I have a 6 Mbps (megabit per second) connection, so I usually download files at around 800 kB/s (kilobytes per second). Of course, people aren't generally as precise as they should be, so even if you know the various standards out there, you've got to keep the context of the number in mind to make sure it makes sense. :) On 12/23/07, Micky Hulse [EMAIL PROTECTED] wrote: Latcho wrote: 512 Kbits / 8 bitsperbyte = streaming 64 KBytes per sec = 3840 KBytes per minute = (3840 / 1024) 3.75 MBytes Wow, thanks for that. ;) Interesting stuff. I finally had a chance to compress a vid (using settings I mentioned in first post) and the file size was compressed to about 13mb (note to self, mb = megabytes) :D Playing with the numbers now though... the formula above is good to know. Thanks Latcho and Marc! Cheers, Micky -- Wishlist: http://tinyurl.com/22xonb Switch: http://browsehappy.com/ BCC?: http://snipurl.com/w6f8 My: http://del.icio.us/mhulse ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders -- Cory Petosky : Developer : PUNY 1618 Central Ave NE Suite 130 Minneapolis, MN 55413 Office: 612.216.3924 Mobile: 240.422.9652 Fax: 612.605.9216 http://www.punyentertainment.com ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
Cory Petosky wrote: To be picky about nomenclature -- ...snip... the number in mind to make sure it makes sense. :) Wow, great additional info! Thanks Cory. :) Kinda reminds me of the width always comes first for measurements. Thank you for the detailed info. I am definitely bookmarking this thread. Have a great new year! Cheers. Micky -- Wishlist: http://tinyurl.com/22xonb Switch: http://browsehappy.com/ BCC?: http://snipurl.com/w6f8 My: http://del.icio.us/mhulse ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
512 Kbits / 8 bitsperbyte = streaming 64 KBytes per sec = 3840 KBytes per minute = (3840 / 1024) 3.75 MBytes Marc Hoffman wrote: Wouldn't it be kbps x total running time in seconds? So if it's 512 kbps for 100 seconds then it's 512 x 100 = 51,200 kb. Marc At 10:34 AM 12/22/2007, you wrote: Hi all, Just wondering if there is a good way to estimate flash video file sizes? For example, lets say I have 2:30 of RAW DV footage that I want to convert to: * Video Codec: On2 VP6 * Encoding: 2-Pass VBR * Resolution: 480x360 pixels * Frame Rate: 30 fps * Video Data Rate: 464 kbps * Audio Data Rate: 48 kbps * Total Data Rate: 512 kbps * Keyframe: Every 6 seconds Is there a mathematical way to calculate/approximate file size based on (above) settings? My rough estimate: 9.5 to 13.5 megabytes Sound right to you? Unfortunately, I do not have access to the/any video at the moment... I would prefer to just test some real video, rather than bothering all of you folks. :( Tips on how I could roughly estimate file size would be great! Or, does my guestimation sound close? Thanks! Cheers, Micky ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
Latcho wrote: 512 Kbits / 8 bitsperbyte = streaming 64 KBytes per sec = 3840 KBytes per minute = (3840 / 1024) 3.75 MBytes Wow, thanks for that. ;) Interesting stuff. I finally had a chance to compress a vid (using settings I mentioned in first post) and the file size was compressed to about 13mb (note to self, mb = megabytes) :D Playing with the numbers now though... the formula above is good to know. Thanks Latcho and Marc! Cheers, Micky -- Wishlist: http://tinyurl.com/22xonb Switch: http://browsehappy.com/ BCC?: http://snipurl.com/w6f8 My: http://del.icio.us/mhulse ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
[Flashcoders] Estimate FLV file size?
Hi all, Just wondering if there is a good way to estimate flash video file sizes? For example, lets say I have 2:30 of RAW DV footage that I want to convert to: * Video Codec: On2 VP6 * Encoding: 2-Pass VBR * Resolution: 480x360 pixels * Frame Rate: 30 fps * Video Data Rate: 464 kbps * Audio Data Rate: 48 kbps * Total Data Rate: 512 kbps * Keyframe: Every 6 seconds Is there a mathematical way to calculate/approximate file size based on (above) settings? My rough estimate: 9.5 to 13.5 megabytes Sound right to you? Unfortunately, I do not have access to the/any video at the moment... I would prefer to just test some real video, rather than bothering all of you folks. :( Tips on how I could roughly estimate file size would be great! Or, does my guestimation sound close? Thanks! Cheers, Micky ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
Wouldn't it be kbps x total running time in seconds? So if it's 512 kbps for 100 seconds then it's 512 x 100 = 51,200 kb. Marc At 10:34 AM 12/22/2007, you wrote: Hi all, Just wondering if there is a good way to estimate flash video file sizes? For example, lets say I have 2:30 of RAW DV footage that I want to convert to: * Video Codec: On2 VP6 * Encoding: 2-Pass VBR * Resolution: 480x360 pixels * Frame Rate: 30 fps * Video Data Rate: 464 kbps * Audio Data Rate: 48 kbps * Total Data Rate: 512 kbps * Keyframe: Every 6 seconds Is there a mathematical way to calculate/approximate file size based on (above) settings? My rough estimate: 9.5 to 13.5 megabytes Sound right to you? Unfortunately, I do not have access to the/any video at the moment... I would prefer to just test some real video, rather than bothering all of you folks. :( Tips on how I could roughly estimate file size would be great! Or, does my guestimation sound close? Thanks! Cheers, Micky ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
Wouldn't it be kbps x total running time in seconds? So if it's 512 kbps for 100 seconds then it's 512 x 100 = 51,200 kb. Ah, yes... that makes sense. :) This might be another silly question, but how does one know when kbps is kilobytes or kilobits? Many thanks for the help. :D Cheers, M ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
bits :) At 11:52 AM 12/22/2007, [EMAIL PROTECTED] wrote: Wouldn't it be kbps x total running time in seconds? So if it's 512 kbps for 100 seconds then it's 512 x 100 = 51,200 kb. Ah, yes... that makes sense. :) This might be another silly question, but how does one know when kbps is kilobytes or kilobits? Many thanks for the help. :D Cheers, M ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
bits :) At 11:52 AM 12/22/2007, [EMAIL PROTECTED] wrote: Wouldn't it be kbps x total running time in seconds? So if it's 512 kbps for 100 seconds then it's 512 x 100 = 51,200 kb. Ah, yes... that makes sense. :) This might be another silly question, but how does one know when kbps is kilobytes or kilobits? Many thanks for the help. :D Cheers, M ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] Estimate FLV file size?
bits :) Hehe, thanks! :) I always get my bits and bytes mixed-up... esp. when it comes to video compression settings. Thanks Marc! Have a great new year. Cheers, M ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
