簡単に言うと：ffmpegを再インストールしてみましたsudo apt install ffmpeg：：
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
ffmpeg : Depends: libavcodec58 (= 7:4.1.6-1~deb10u1)
Depends: libavdevice58 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libavfilter7 (= 7:4.1.6-1~deb10u1)
[...]
E: Unable to correct problems, you have held broken packages.`
欠落している依存関係を解決するには？
完全な質問：
これを実行すると、ffmpeg -i "./input.mp4" -vcodec libvpx-vp9 -acodec libvorbis -b:v 9M "./output.webm"結果のビットレートは9MBではなく、はるかに小さくなります。しかし、使用したい入力ビデオのビットレートは正確に9 MB以上です。
なぜこれが起こるのだろうか。を使用する以外に、この問題を解決するのに役立つ方法はありません-crf。これにより、試行錯誤によって出力ファイルのビットレートを入力ファイルのビットレートと一致させることができます。この問題は、次の質問に関連している場合とない場合があります。これについて別の質問をする必要があるかもしれません。
上記の問題のためにffmpegを再インストールしてみました。 ffmpegがインストールされているようです。Basil GelloのKodiリポジトリ（メインのDebianリポジトリのKodiバージョンは非常に古くなっています。）最初はリポジトリを削除し、受信したリポジトリを実行してsudo apt-get update && sudo apt-get --reinstall install ffmpegffmpegを再インストールしてみました。Reinstallation of ffmpeg is not possible, it cannot be downloaded.だからリポジトリを再度追加し、次を実行しましたsudo apt-get --reinstall install ffmpeg/buster-backports。出力は次のとおりです。
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'ffmpeg'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavcodec58' because of 'ffmpeg'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavutil56' because of 'libavcodec58'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libswresample3' because of 'libavcodec58'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavdevice58' because of 'ffmpeg'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavfilter7' because of 'libavdevice58'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavformat58' because of 'libavfilter7'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libpostproc55' because of 'libavfilter7'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libswscale5' because of 'libavfilter7'
Selected version '7:4.3.1-6~bpo10+1' (kodi-nightly-debian-repo:1.0/stable-backports [amd64]) for 'libavresample4' because of 'ffmpeg'
The following packages were automatically installed and are no longer required:
i965-va-driver:i386 intel-media-va-driver:i386 libgomp1:i386 libigdgmm5:i386 libsoxr0:i386 libva-drm2:i386 libva-x11-2:i386 libva2:i386
libvdpau-va-gl1:i386 libvdpau1:i386 mesa-va-drivers:i386 mesa-vdpau-drivers:i386 ocl-icd-libopencl1:i386 va-driver-all:i386 vdpau-driver-all:i386
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
libavcodec58 libavdevice58 libavfilter7 libavformat58 libavresample4 libavutil56 libpostproc55 libswresample3 libswscale5
Suggested packages:
ffmpeg-doc
The following packages will be REMOVED:
libavcodec-dev libavfilter-dev libavformat-dev libavresample-dev libavutil-dev libavutil56:i386 libpostproc-dev libswresample-dev libswresample3:i386
libswscale-dev
The following packages will be upgraded:
ffmpeg libavcodec58 libavdevice58 libavfilter7 libavformat58 libavresample4 libavutil56 libpostproc55 libswresample3 libswscale5
10 upgraded, 0 newly installed, 10 to remove and 0 not upgraded.
Need to get 9,752 kB of archives.
After this operation, 39.0 MB disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 ffmpeg amd64 7:4.3.1-6~bpo10+1 [1,584 kB]
Get:2 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavdevice58 amd64 7:4.3.1-6~bpo10+1 [114 kB]
Get:3 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavfilter7 amd64 7:4.3.1-6~bpo10+1 [1,281 kB]
Get:4 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libswscale5 amd64 7:4.3.1-6~bpo10+1 [195 kB]
Get:5 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavformat58 amd64 7:4.3.1-6~bpo10+1 [1,037 kB]
Get:6 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavcodec58 amd64 7:4.3.1-6~bpo10+1 [4,942 kB]
Get:7 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libswresample3 amd64 7:4.3.1-6~bpo10+1 [95.0 kB]
Get:8 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libpostproc55 amd64 7:4.3.1-6~bpo10+1 [91.0 kB]
Get:9 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavresample4 amd64 7:4.3.1-6~bpo10+1 [92.0 kB]
Get:10 https://basilgello.github.io/kodi-nightly-debian-repo buster-backports/main amd64 libavutil56 amd64 7:4.3.1-6~bpo10+1 [320 kB]
Fetched 9,752 kB in 8s (1,242 kB/s)
Reading changelogs... Done
apt-listchanges: Do you want to continue? [Y/n] y
apt-listchanges: Mailing root: apt-listchanges: changelogs for hostname(Reading database ... 427402 files and directories currently installed.)
Removing libavfilter-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libavformat-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libavcodec-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libavresample-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libswscale-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libswresample-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libswresample3:i386 (7:4.3.1-5.1~bpo10+1) ...
Removing libavutil56:i386 (7:4.3.1-5.1~bpo10+1) ...
Removing libpostproc-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
Removing libavutil-dev:amd64 (7:4.3.1-5.1~bpo10+1) ...
(Reading database ... 427211 files and directories currently installed.)
Preparing to unpack .../0-ffmpeg_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking ffmpeg (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../1-libavdevice58_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavdevice58:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../2-libavfilter7_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavfilter7:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../3-libswscale5_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libswscale5:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../4-libavformat58_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavformat58:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../5-libavcodec58_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavcodec58:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../6-libswresample3_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libswresample3:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../7-libpostproc55_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libpostproc55:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../8-libavresample4_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavresample4:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Preparing to unpack .../9-libavutil56_7%3a4.3.1-6~bpo10+1_amd64.deb ...
Unpacking libavutil56:amd64 (7:4.3.1-6~bpo10+1) over (7:4.3.1-5.1~bpo10+1) ...
Setting up libavutil56:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libpostproc55:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libswscale5:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libswresample3:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libavresample4:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libavcodec58:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libavformat58:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libavfilter7:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up libavdevice58:amd64 (7:4.3.1-6~bpo10+1) ...
Setting up ffmpeg (7:4.3.1-6~bpo10+1) ...
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for libc-bin (2.28-10) ...
[ Rootkit Hunter version 1.4.6 ]
File updated: searched for 181 files, found 146
Scanning processes...
Scanning candidates...
Scanning processor microcode...
Scanning linux images...
Running kernel seems to be up-to-date.
The processor microcode seems to be up-to-date.
No services need to be restarted.
No containers need to be restarted.
User sessions running outdated binaries: [...]
これで、常に出力は次sudo apt install ffmpegのようになります。
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
ffmpeg : Depends: libavcodec58 (= 7:4.1.6-1~deb10u1)
Depends: libavdevice58 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libavfilter7 (= 7:4.1.6-1~deb10u1)
Depends: libavformat58 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libavresample4 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libavutil56 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libpostproc55 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libswresample3 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
Depends: libswscale5 (= 7:4.1.6-1~deb10u1) but 7:4.3.1-6~bpo10+1 is to be installed
E: Unable to correct problems, you have held broken packages.
欠落している依存関係を解決するには？これを再インストールすることはできず、他の多くのコアパッケージがそれに依存しています。
私も走ってみました。sudo apt-get clean ; sudo apt-get update ; sudo apt-get check ; sudo apt-get purge ffmpeg* -y ; sudo apt-get autoremove -y ; sudo apt-get -f satisfy ffmpeg -y これ問題は解決されませんでした。
私はKDEを使ってDebian 10を実行しています。助けてくれてありがとう。
ベストアンサー1
libavdevice58バージョン7：4.3.1-6〜bpo10 + 1をインストールするように求められたようです。これはffmpeglibavdevice58バージョン7：4.1.6-1からdeb10u1に依存するDebianのバニラと競合します。コマンドラインでバージョンを指定することで、以前のバージョンを明示的に要求できます。
sudo apt install ffmpeg libavdevice58=7:4.1.6-1~deb10u1
エンコード結果については2番目の質問をする必要があります。 〜のように観光ガイド一緒に働くいくつかのパラメータがあることを指摘してください。命令は実際にエンコーダを固定ビットレートモードではなく平均ビットレートモードに設定する。ソースデータが十分に簡単に圧縮できる場合、エンコーダは常に目標ビットレート未満を維持することを選択できます。