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-rw-r--r--lib/private/Preview/Movie.php31
-rw-r--r--lib/private/Preview/ProviderV2.php7
2 files changed, 29 insertions, 9 deletions
diff --git a/lib/private/Preview/Movie.php b/lib/private/Preview/Movie.php
index e7fc7745996..b139758596c 100644
--- a/lib/private/Preview/Movie.php
+++ b/lib/private/Preview/Movie.php
@@ -50,17 +50,34 @@ class Movie extends ProviderV2 {
public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
// TODO: use proc_open() and stream the source file ?
- $absPath = $this->getLocalFile($file, 5242880); // only use the first 5MB
+ $result = null;
+ if ($this->useTempFile($file)) {
+ // try downloading 5 MB first as it's likely that the first frames are present there
+ // in some cases this doesn't work for example when the moov atom is at the
+ // end of the file, so if it fails we fall back to getting the full file
+ $sizeAttempts = [5242880, null];
+ } else {
+ // size is irrelevant, only attempt once
+ $sizeAttempts = [null];
+ }
- $result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
- if ($result === null) {
- $result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
+ foreach ($sizeAttempts as $size) {
+ $absPath = $this->getLocalFile($file, $size);
+
+ $result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
if ($result === null) {
- $result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
+ $result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
+ if ($result === null) {
+ $result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
+ }
}
- }
- $this->cleanTmpFiles();
+ $this->cleanTmpFiles();
+
+ if ($result !== null) {
+ break;
+ }
+ }
return $result;
}
diff --git a/lib/private/Preview/ProviderV2.php b/lib/private/Preview/ProviderV2.php
index e7cabd10337..1b5bee0e5cc 100644
--- a/lib/private/Preview/ProviderV2.php
+++ b/lib/private/Preview/ProviderV2.php
@@ -70,6 +70,10 @@ abstract class ProviderV2 implements IProviderV2 {
*/
abstract public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage;
+ protected function useTempFile(File $file) {
+ return $file->isEncrypted() || !$file->getStorage()->isLocal();
+ }
+
/**
* Get a path to either the local file or temporary file
*
@@ -78,8 +82,7 @@ abstract class ProviderV2 implements IProviderV2 {
* @return string
*/
protected function getLocalFile(File $file, int $maxSize = null): string {
- $useTempFile = $file->isEncrypted() || !$file->getStorage()->isLocal();
- if ($useTempFile) {
+ if ($this->useTempFile($file)) {
$absPath = \OC::$server->getTempManager()->getTemporaryFile();
$content = $file->fopen('r');