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Toodarday's questions

Martin Hope
Toodarday
Asked: 2020-05-19 12:57:19 +0800 CST
  • 0

我最近将 Ubuntu 20.04 安装到 USB 上，并注意到我无法在“从 USB 启动”选项中看到它。我相信这是由于使用 ext4 文件系统安装它。我的笔记本电脑 Aspire 3 a315 似乎不支持它。

问题 2：预计 5 年内最常见的文件系统是什么？

所以我的第二个问题是关于未来的证明。预计未来 5 年内最常用于笔记本电脑的格式。NTFS 是一个不错的选择吗？我不是在询问性能，我只需要它可以使用以及笔记本电脑仍将使用的最可能格式是什么。

filesystem live-usb ext4
Martin Hope
Toodarday
Asked: 2019-05-22 06:51:37 +0800 CST
  • 4

现在我正在使用以下命令来获取视频持续时间的输出

ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 -sexagesimal 'video file.mp4'

结果是0:33:29.410000

我需要将此结果更改为以下内容

  • 额外的 0 必须在前面 0:33:29.410000
  • 秒数必须向上或向下舍入。最终输出应该是00:33:29
command-line video
Martin Hope
Toodarday
Asked: 2019-04-13 11:27:47 +0800 CST
  • 2

我正在使用当前的 ffmpeg 命令来转换多个视频并创建一个水印，该水印是每 120 秒播放时间从右到左到右的滚动文本。

find /home/video/ -type f -execdir ffmpeg -i '{}' -filter:v "drawtext=fontfile=/root/FreeSans.ttf:text='QWERTY':[email protected]:fontsize=26:y=h-line_h-30:x=w/20*mod(t\,120),scale=854:480" -pix_fmt yuv420p -c:v libx264 -preset slow -b:v 1000k -minrate 500k -maxrate 2000k -bufsize 2000k -c:a aac -ar 44100 -b:a 128k -movflags +faststart '/home/video/new/{}.mp4' \;

我想修改水印，使它看起来像这样

在此处输入图像描述

我希望上面显示的文本每 120 秒淡出一次并持续 15 秒。是粗体格式和相同的颜色（黑色）。

“qwerty qwerty qwerty qwerty”新行
“qwerty qwerty qwerty qwerty”

我目前使用的当前命令的另一个问题是不同的视频帧。例如，如果视频只有 800x600，则文字会非常大。如果视频为 1920x1080，则文字会非常小。我希望根据帧速率调整文本大小。就屏幕尺寸而言，它应该看起来像上面那样。

ffmpeg
Martin Hope
Toodarday
Asked: 2019-03-29 10:07:49 +0800 CST
  • 1

由于 msdos-partition-table-imposed 错误，我遇到了与在麻烦创建 3TB ext4 分区上发帖的人相同的问题

我得到的新的 6TB 驱动器仅由 Microsoft 发行 2TB，因此我启动到 gparted 的“设备->创建分区表并从列表中选择“gpt”。然后我重新启动到 Windows 和 G: 驱动器不再安装。我删除了 disk0 并在 Windows 磁盘管理中重新创建了它，但是正如您在下面的屏幕截图中看到的那样，磁盘大小仅为 5589GB。应该更多吗？

在执行此操作之前，我确实使用了大约 300GB 的数据，我想恢复这些数据，但 Windows 和 gparted 都无法检测到超过 5589GB 的数据。

在此处输入图像描述

partitioning gparted
Martin Hope
Toodarday
Asked: 2019-03-22 09:42:20 +0800 CST
  • 9

我的文件夹中有数百个视频，我想为其制作 gif。每个视频长度不同，但所有视频都超过 30 秒。我想在视频过程中从视频中获取 10 个 3 秒的 gif 图像。例如，如果视频长度为 25 分钟，则应每 2.5 分钟（150 秒）拍摄3 秒的录制gif。

完成的 gif 文件还必须与视频同名，但以 .gif 结尾，所有视频都是 .mp4

GIF 应该是 560x340

用一个命令来做到这一点会很好。

ffmpeg mp4 gif
Martin Hope
Toodarday
Asked: 2016-10-18 09:42:53 +0800 CST
  • 1

我已经在机器上安装了 Proxmox。我需要扩展/dev/mapper/pve-data未使用的空间/dev/sdb5

我怎样才能做到这一点？

fdisk -l

Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sda: 223.6 GiB, 240057409536 bytes, 468862128 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xfbd89a5c

Device     Boot    Start       End   Sectors  Size Id Type
/dev/sda1  *        4096  40962047  40957952 19.5G 83 Linux
/dev/sda2       40962048  43057151   2095104 1023M 82 Linux swap / Solaris
/dev/sda3       43057152 468854783 425797632  203G  f W95 Ext'd (LBA)
/dev/sda5       43059200 468854783 425795584  203G 8e Linux LVM

Disk /dev/sdb: 223.6 GiB, 240057409536 bytes, 468862128 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xafd793e2

Device     Boot    Start       End   Sectors  Size Id Type
/dev/sdb1           4096  40962047  40957952 19.5G fd Linux raid autodetect
/dev/sdb2       40962048  43057151   2095104 1023M 82 Linux swap / Solaris
/dev/sdb3       43057152 468854783 425797632  203G  f W95 Ext'd (LBA)
/dev/sdb5       43059200 468854783 425795584  203G fd Linux raid autodetect

Disk /dev/mapper/pve-data: 199 GiB, 213708177408 bytes, 417398784 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
partitioning