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Last edited by embis2003; 1st May 2020 at 08:38.
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emm....It's the truth that the TS container took 18mb.You can check.
Code:ffmpeg -i yours.TS -c copy yours.mp4
I have downloaded the 216mb TS when embis2003 showed the m3u8 link yesterday。。。earlier than you...
I think,links
"http://22-cf-168198817351468082649c6ba82cee92.vip1-dal1.dlvr1.net/ed3c085a-8a07-11ea-ab7b-bb28a3b566a9/v3/hls/2015/10/USUV70502343/f92ea866-1b8e-45f8-adff-109f01624580/5200/usuv70502343_5200k_1920x1080_h264_5200_aac_128.m3u 8"
or "http://22-fa-168198817351468082649c6ba82cee92.vip2-ams1.dlvr1.net/35593fc2-89ef-11ea-a...0_aac_128.m3u8"
is not the right link for a higher bitrate file.
Maybe we can change words in the links to get a big file. -
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I did check. The video streams are identical. Transport streams have lots of overhead because they are designed to be picked up any where along the stream. They contain many headers that describe the video throughout the stream. (Think TV broadcast where you might start watching a channel at any time -- the TV needs to know the resolution, frame rate, etc. before it can start playing. So all that information is broadcast every few seconds.) Containers like MP4 and MKV usually have only one header (at the beginning or end) that describe the entire video.
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I have learnt the hard way.
But what I can not get my head around, which is what led me to offer this version, is why should a manifest (if that is the right word) offer mp4,mpg and ts yet different download programs only pick up one type. Or is there only one type and the download program wraps what it thinks it sees even altering the bitrate for the mpeg to suit. -
Some intresting updates regarding this.
I have purchased the real ProRes master of this video, that was retrieved straight from the label. Presumably transferred straight from the betacam tape, it is in 4:3, 480p and the original interlaced structure is intact.
Posessing this allowed me to reverse engineer the process which created the artifacts in the VEVO transcode.
IVTCing the master with tfm(pp=0).tdecimate() creates nearly identical artifacts in the same exact spots as in the VEVO rip. Leading me to believe, the artifacts I was actually seeing was simply unprocessed comb frames in the IVTC process.
On the master, resizing to 720 x 540, then cropping all the letterboxing off leaves me with a 1:85 video. Further cropping an additional 16 pixels off both sides leaves me with a 16:9 video just as the VEVO rip was. I then upscaled to 1920 x 1080. Comparing this to the VEVO rip, it is basically the same.
With this knowledge, upon reimporting the original vevo rip, I de-lanczos resized back down to the same cropped SD size. I added 16 black pixels to the left and right side to pad out the difference. I then added 77 pixels on the top and 75 pixels on the bottom to add back the letterboxing, leaving me with 750 x 540. Then, I de-bicubic resized to 720 x 480.
I applied tdecimate(cycle=25) to get back to 24. I then did ChangeFPS to get back to 29.97, then applied tfm().tdecimate() again, without pp=0 And yep, you probably could've guessed, it worked perfectly. The fields were 100% preserved. The compression did distort them to some extent, however, using clip2 with QTGMC it deinterlaced the unprocessed frames very well.
So theoretically, if you have a video like this, it is possible to de-interlace the frames if you can find out the original, interlaced size. For videos which don't have weird cropping, it would probably be a lot easier to guess the original size.
But I just thought I'd leave this here in case anyone find it useful when working with VEVO videos.
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