4 ms·

Aren't all formats available on yt lossy transcodes?

by brnt 5y ago

Retr0id 5y ago
Usually, but there's no use in adding an extra layer of transcoding (I've never seen yt offer mp3 directly)
- alternatetwo 5y ago
  It did once, over 10 years ago (in 2008 or so, with the whole fmt=18 arguments etc), if your total video bitrate was below 320 kbps, it left the audio untouched ... I wonder if those videos from back then are still around and if yes, still have untouched audio. Found one: https://www.youtube.com/watch?v=AavrI7RLU0g https://www.youtube.com/watch?v=AavrI7RLU0g Of course now it only has 96kbps aac, but it did have untouched mp3 audio back then. And another update, I downloaded it back in 2013, where it still had 160kbps mp3 audio! Note after formatting: As you can see from the video FPS, the trick was to keep the video bitrate as low as possible, by using a still image (or pad it with black + silence at the end). I'm not sure anymore if you had to also already use the same video codec as youtube did back then, i.e., if the video stayed untouched too. I never managed to upload a video like this, so I don't exactly know. MediaInfo output: General Complete name : Luke Warner and Mat Lock - Deep Psychosis (Daniel Kandi's Cure mix) (HQ).flv Format : Flash Video File size : 12.7 MiB Duration : 7 min 34 s Overall bit rate mode : Variable Overall bit rate : 234 kb/s httphostheader : r13---sn-4g57knek.c.youtube.com Video Format : Sorenson Spark Codec ID : 2 Duration : 7 min 34 s Bit rate : 69.5 kb/s Width : 480 pixels Height : 360 pixels Display aspect ratio : 4:3 Frame rate mode : Constant Frame rate : 1.044 FPS Bit depth : 8 bits Bits/(Pixel\*Frame) : 0.385 Stream size : 3.76 MiB (30%) Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo / MS Stereo Codec ID : 2 Codec ID/Hint : MP3 Duration : 7 min 34 s Bit rate mode : Variable Bit rate : 160 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Compression mode : Lossy Delay relative to video : -131 ms Stream size : 8.68 MiB (68%) Writing library : LAME3.97

Aren't all formats available on yt lossy transcodes?

by brnt 5y ago

Aren't all formats available on yt lossy transcodes?

Retr0id 5y ago

Usually, but there's no use in adding an extra layer of transcoding (I've never seen yt offer mp3 directly)

alternatetwo 5y ago
It did once, over 10 years ago (in 2008 or so, with the whole fmt=18 arguments etc), if your total video bitrate was below 320 kbps, it left the audio untouched ... I wonder if those videos from back then are still around and if yes, still have untouched audio. Found one: https://www.youtube.com/watch?v=AavrI7RLU0g https://www.youtube.com/watch?v=AavrI7RLU0g Of course now it only has 96kbps aac, but it did have untouched mp3 audio back then. And another update, I downloaded it back in 2013, where it still had 160kbps mp3 audio! Note after formatting: As you can see from the video FPS, the trick was to keep the video bitrate as low as possible, by using a still image (or pad it with black + silence at the end). I'm not sure anymore if you had to also already use the same video codec as youtube did back then, i.e., if the video stayed untouched too. I never managed to upload a video like this, so I don't exactly know. MediaInfo output: General Complete name : Luke Warner and Mat Lock - Deep Psychosis (Daniel Kandi's Cure mix) (HQ).flv Format : Flash Video File size : 12.7 MiB Duration : 7 min 34 s Overall bit rate mode : Variable Overall bit rate : 234 kb/s httphostheader : r13---sn-4g57knek.c.youtube.com Video Format : Sorenson Spark Codec ID : 2 Duration : 7 min 34 s Bit rate : 69.5 kb/s Width : 480 pixels Height : 360 pixels Display aspect ratio : 4:3 Frame rate mode : Constant Frame rate : 1.044 FPS Bit depth : 8 bits Bits/(Pixel\*Frame) : 0.385 Stream size : 3.76 MiB (30%) Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Format settings : Joint stereo / MS Stereo Codec ID : 2 Codec ID/Hint : MP3 Duration : 7 min 34 s Bit rate mode : Variable Bit rate : 160 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Compression mode : Lossy Delay relative to video : -131 ms Stream size : 8.68 MiB (68%) Writing library : LAME3.97