diff --git a/src/error.rs b/src/error.rs
index b36bba1..273aad5 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -90,8 +90,8 @@ pub(crate) enum UploadError {
     #[error("Provided token did not match expected token")]
     InvalidToken,
 
-    #[error("Unsupported image format")]
-    UnsupportedFormat,
+    #[error("Process endpoint was called with invalid extension")]
+    UnsupportedProcessExtension,
 
     #[error("Gif uploads are not enabled")]
     SilentVideoDisabled,
@@ -168,11 +168,11 @@ impl ResponseError for Error {
                 | UploadError::Limit(_)
                 | UploadError::NoFiles
                 | UploadError::Upload(_)
-                | UploadError::UnsupportedFormat
                 | UploadError::Store(crate::store::StoreError::Repo(
                     crate::repo::RepoError::AlreadyClaimed,
                 ))
                 | UploadError::Repo(crate::repo::RepoError::AlreadyClaimed)
+                | UploadError::UnsupportedProcessExtension
                 | UploadError::SilentVideoDisabled,
             ) => StatusCode::BAD_REQUEST,
             Some(UploadError::MissingAlias) => StatusCode::NOT_FOUND,
diff --git a/src/ffmpeg.rs b/src/ffmpeg.rs
index d10f64b..a878220 100644
--- a/src/ffmpeg.rs
+++ b/src/ffmpeg.rs
@@ -4,7 +4,7 @@ mod tests;
 use crate::{
     config::{AudioCodec, ImageFormat, MediaConfiguration, VideoCodec},
     error::{Error, UploadError},
-    magick::{Details, ValidInputType},
+    magick::{Details, ParseDetailsError, ValidInputType},
     process::Process,
     store::{Store, StoreError},
 };
@@ -498,7 +498,8 @@ fn parse_details(output: DetailsOutput) -> Result<Option<Details>, Error> {
                 stream.height,
                 stream.nb_read_frames.as_deref(),
                 *v,
-            );
+            )
+            .map_err(Error::from);
         }
     }
 
@@ -510,9 +511,13 @@ fn parse_details_inner(
     height: usize,
     frames: Option<&str>,
     format: VideoFormat,
-) -> Result<Option<Details>, Error> {
+) -> Result<Option<Details>, ParseDetailsError> {
     let frames = frames
-        .map(|frames| frames.parse().map_err(|_| UploadError::UnsupportedFormat))
+        .map(|frames| {
+            frames
+                .parse()
+                .map_err(|_| ParseDetailsError::ParseFrames(String::from(frames)))
+        })
         .transpose()?
         .unwrap_or(1);
 
diff --git a/src/lib.rs b/src/lib.rs
index ee031b8..46b567c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -562,7 +562,7 @@ fn prepare_process(
 
     let format = ext
         .parse::<ImageFormat>()
-        .map_err(|_| UploadError::UnsupportedFormat)?;
+        .map_err(|_| UploadError::UnsupportedProcessExtension)?;
 
     let ext = format.to_string();
 
diff --git a/src/magick.rs b/src/magick.rs
index b153a9b..8485bff 100644
--- a/src/magick.rs
+++ b/src/magick.rs
@@ -272,6 +272,9 @@ pub(crate) enum ParseDetailsError {
 
     #[error("Format is unsupported: {0}")]
     Unsupported(String),
+
+    #[error("Could not parse frame count from {0}")]
+    ParseFrames(String),
 }
 
 fn parse_details(details_output: Vec<DetailsOutput>) -> Result<Details, Error> {
@@ -297,7 +300,7 @@ fn parse_details(details_output: Vec<DetailsOutput>) -> Result<Details, Error> {
 
     if !details_output
         .iter()
-        .all(|details| &details.image.format == format)
+        .all(|details| details.image.format == format)
     {
         return Err(ParseDetailsError::MixedFormats.into());
     }