Re: [FFmpeg-user] Decimate question
On 12/30/2020 12:46 PM, Paul B Mahol wrote: On Wed, Dec 30, 2020 at 6:44 PM Mark Filipak (ffmpeg) wrote: On 12/30/2020 03:35 AM, Paul B Mahol wrote: On Wed, Dec 30, 2020 at 6:08 AM Mark Filipak (ffmpeg) < markfili...@bog.us> wrote: Decimate will drop a repeated frame in each sequence of 5 (=default) frames. I assume the dropped frame can be any 1 of the 5. Is there a way to discover which of the 5 frames it dropped? -v debug May I make a feature request? Could it be added as ... is it called side data? I haven't used side data yet so I'm not quite sure what it is and how it's used. The frame # would need to be readable by follow-on logic inside expressions. This is for processing videos that have previously been telecined, a frame dropped, and a frame repeated, in various sequences. The sequence of the video destruction is not important. What's important is the phase of the decimation within the modulo-5 in the video that remains. In 4 of the 5 cases (phases), it's actually possible to almost completely recover the original video (prior to the wrecking). 4 out of 5 cases involve the loss of just 1 field in 10. The 5th case involves the total loss of a whole frame and is not recoverable (but since that case would have an amazing amount of judder, it's unlikely to be found in the wild). However, I have found other cases of this video species in the wild. Sorry, but you make nonsense entries, very often and as expected. I have the evidence. I have made short captures of the f'ked up videos and how to fix them. Before decimation, there's 5 cases (one of which is unrecoverable). After decimation, the 4 remaining cases can't be differentiated. If I knew which frame# decimation had removed, then I could differentiate between them and apply the best recovery of each of the 4 video species. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Decimate question
On Wed, Dec 30, 2020 at 6:44 PM Mark Filipak (ffmpeg) wrote: > On 12/30/2020 03:35 AM, Paul B Mahol wrote: > > On Wed, Dec 30, 2020 at 6:08 AM Mark Filipak (ffmpeg) < > markfili...@bog.us> > > wrote: > > > >> Decimate will drop a repeated frame in each sequence of 5 (=default) > >> frames. I assume the dropped > >> frame can be any 1 of the 5. Is there a way to discover which of the 5 > >> frames it dropped? > >> > > > > -v debug > > May I make a feature request? Could it be added as ... is it called side > data? > > I haven't used side data yet so I'm not quite sure what it is and how it's > used. > > The frame # would need to be readable by follow-on logic inside > expressions. > > This is for processing videos that have previously been telecined, a frame > dropped, and a frame > repeated, in various sequences. The sequence of the video destruction is > not important. What's > important is the phase of the decimation within the modulo-5 in the video > that remains. In 4 of the > 5 cases (phases), it's actually possible to almost completely recover the > original video (prior to > the wrecking). 4 out of 5 cases involve the loss of just 1 field in 10. > The 5th case involves the > total loss of a whole frame and is not recoverable (but since that case > would have an amazing amount > of judder, it's unlikely to be found in the wild). However, I have found > other cases of this video > species in the wild. > Sorry, but you make nonsense entries, very often and as expected. > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Decimate question
On 12/30/2020 03:35 AM, Paul B Mahol wrote: On Wed, Dec 30, 2020 at 6:08 AM Mark Filipak (ffmpeg) wrote: Decimate will drop a repeated frame in each sequence of 5 (=default) frames. I assume the dropped frame can be any 1 of the 5. Is there a way to discover which of the 5 frames it dropped? -v debug May I make a feature request? Could it be added as ... is it called side data? I haven't used side data yet so I'm not quite sure what it is and how it's used. The frame # would need to be readable by follow-on logic inside expressions. This is for processing videos that have previously been telecined, a frame dropped, and a frame repeated, in various sequences. The sequence of the video destruction is not important. What's important is the phase of the decimation within the modulo-5 in the video that remains. In 4 of the 5 cases (phases), it's actually possible to almost completely recover the original video (prior to the wrecking). 4 out of 5 cases involve the loss of just 1 field in 10. The 5th case involves the total loss of a whole frame and is not recoverable (but since that case would have an amazing amount of judder, it's unlikely to be found in the wild). However, I have found other cases of this video species in the wild. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Decimate question
On Wed, Dec 30, 2020 at 6:08 AM Mark Filipak (ffmpeg) wrote: > Decimate will drop a repeated frame in each sequence of 5 (=default) > frames. I assume the dropped > frame can be any 1 of the 5. Is there a way to discover which of the 5 > frames it dropped? > -v debug > > Thanks for your attention. Be happy, be healthy, be safe. > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] Decimate question
Decimate will drop a repeated frame in each sequence of 5 (=default) frames. I assume the dropped frame can be any 1 of the 5. Is there a way to discover which of the 5 frames it dropped? Thanks for your attention. Be happy, be healthy, be safe. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
